Index: test/Transforms/SimplifyCFG/X86/disable-lookup-table.ll
===================================================================
--- test/Transforms/SimplifyCFG/X86/disable-lookup-table.ll
+++ test/Transforms/SimplifyCFG/X86/disable-lookup-table.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -simplifycfg -switch-to-lookup -S -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
 ; RUN: opt < %s -passes='simplify-cfg<switch-to-lookup>' -S -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
 
@@ -8,12 +9,32 @@
 ; CHECK-NOT: @switch.table.foo = private unnamed_addr constant [4 x i32] [i32 55, i32 123, i32 0, i32 -1]
 
 define i32 @foo(i32 %c) "no-jump-tables"="true" {
+; CHECK-LABEL: @foo(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[C:%.*]], label [[SW_DEFAULT:%.*]] [
+; CHECK-NEXT:    i32 42, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 43, label [[SW_BB1:%.*]]
+; CHECK-NEXT:    i32 44, label [[SW_BB2:%.*]]
+; CHECK-NEXT:    i32 45, label [[SW_BB3:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       sw.bb1:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb2:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb3:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = phi i32 [ 15, [[SW_DEFAULT]] ], [ -1, [[SW_BB3]] ], [ 0, [[SW_BB2]] ], [ 123, [[SW_BB1]] ], [ 55, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    ret i32 [[RETVAL_0]]
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 42, label %return
-    i32 43, label %sw.bb1
-    i32 44, label %sw.bb2
-    i32 45, label %sw.bb3
+  i32 42, label %return
+  i32 43, label %sw.bb1
+  i32 44, label %sw.bb2
+  i32 45, label %sw.bb3
   ]
 
 sw.bb1: br label %return
@@ -27,12 +48,24 @@
 
 
 define i32 @bar(i32 %c) {
+; CHECK-LABEL: @bar(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[C:%.*]], 42
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* @switch.table.bar, i32 0, i32 [[SWITCH_TABLEIDX]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i32 15
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 42, label %return
-    i32 43, label %sw.bb1
-    i32 44, label %sw.bb2
-    i32 45, label %sw.bb3
+  i32 42, label %return
+  i32 43, label %sw.bb1
+  i32 44, label %sw.bb2
+  i32 45, label %sw.bb3
   ]
 
 sw.bb1: br label %return
Index: test/Transforms/SimplifyCFG/X86/lit.local.cfg
===================================================================
--- test/Transforms/SimplifyCFG/X86/lit.local.cfg
+++ test/Transforms/SimplifyCFG/X86/lit.local.cfg
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 if not 'X86' in config.root.targets:
     config.unsupported = True
 
Index: test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll
===================================================================
--- test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll
+++ test/Transforms/SimplifyCFG/X86/speculate-cttz-ctlz.ll
@@ -1,14 +1,31 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S -simplifycfg -mtriple=x86_64-unknown-unknown -mattr=+bmi < %s | FileCheck %s --check-prefix=ALL --check-prefix=BMI
 ; RUN: opt -S -simplifycfg -mtriple=x86_64-unknown-unknown -mattr=+lzcnt < %s | FileCheck %s --check-prefix=ALL --check-prefix=LZCNT
 ; RUN: opt -S -simplifycfg -mtriple=x86_64-unknown-unknown < %s | FileCheck %s --check-prefix=ALL --check-prefix=GENERIC
 
 
 define i64 @test1(i64 %A) {
-; ALL-LABEL: @test1(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %A, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true)
-; ALL-NEXT: select i1 [[COND]], i64 64, i64 [[CTLZ]]
-; ALL: ret
+; BMI-LABEL: @test1(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[A]], i1 true)
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
+; BMI-NEXT:    ret i64 [[COND]]
+;
+; LZCNT-LABEL: @test1(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[A]], i1 true)
+; LZCNT-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
+; LZCNT-NEXT:    ret i64 [[SPEC_SELECT]]
+;
+; GENERIC-LABEL: @test1(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[A]], i1 true)
+; GENERIC-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
+; GENERIC-NEXT:    ret i64 [[COND]]
+;
 entry:
   %tobool = icmp eq i64 %A, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -23,11 +40,27 @@
 }
 
 define i32 @test2(i32 %A) {
-; ALL-LABEL: @test2(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %A, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.ctlz.i32(i32 %A, i1 true)
-; ALL-NEXT: select i1 [[COND]], i32 32, i32 [[CTLZ]]
-; ALL: ret
+; BMI-LABEL: @test2(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[A]], i1 true)
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]]
+; BMI-NEXT:    ret i32 [[COND]]
+;
+; LZCNT-LABEL: @test2(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[A]], i1 true)
+; LZCNT-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]]
+; LZCNT-NEXT:    ret i32 [[SPEC_SELECT]]
+;
+; GENERIC-LABEL: @test2(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[A]], i1 true)
+; GENERIC-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]]
+; GENERIC-NEXT:    ret i32 [[COND]]
+;
 entry:
   %tobool = icmp eq i32 %A, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -43,11 +76,27 @@
 
 
 define signext i16 @test3(i16 signext %A) {
-; ALL-LABEL: @test3(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i16 %A, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i16 @llvm.ctlz.i16(i16 %A, i1 true)
-; ALL-NEXT: select i1 [[COND]], i16 16, i16 [[CTLZ]]
-; ALL: ret
+; BMI-LABEL: @test3(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i16 [[A:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i16 @llvm.ctlz.i16(i16 [[A]], i1 true)
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 16, i16 [[TMP0]]
+; BMI-NEXT:    ret i16 [[COND]]
+;
+; LZCNT-LABEL: @test3(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i16 [[A:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i16 @llvm.ctlz.i16(i16 [[A]], i1 true)
+; LZCNT-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i16 16, i16 [[TMP0]]
+; LZCNT-NEXT:    ret i16 [[SPEC_SELECT]]
+;
+; GENERIC-LABEL: @test3(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i16 [[A:%.*]], 0
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i16 @llvm.ctlz.i16(i16 [[A]], i1 true)
+; GENERIC-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 16, i16 [[TMP0]]
+; GENERIC-NEXT:    ret i16 [[COND]]
+;
 entry:
   %tobool = icmp eq i16 %A, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -63,11 +112,27 @@
 
 
 define i64 @test1b(i64 %A) {
-; ALL-LABEL: @test1b(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %A, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.cttz.i64(i64 %A, i1 true)
-; ALL-NEXT: select i1 [[COND]], i64 64, i64 [[CTTZ]]
-; ALL: ret
+; BMI-LABEL: @test1b(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[A]], i1 true)
+; BMI-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
+; BMI-NEXT:    ret i64 [[SPEC_SELECT]]
+;
+; LZCNT-LABEL: @test1b(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[A]], i1 true)
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
+; LZCNT-NEXT:    ret i64 [[COND]]
+;
+; GENERIC-LABEL: @test1b(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[A:%.*]], 0
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[A]], i1 true)
+; GENERIC-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i64 64, i64 [[TMP0]]
+; GENERIC-NEXT:    ret i64 [[COND]]
+;
 entry:
   %tobool = icmp eq i64 %A, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -83,11 +148,27 @@
 
 
 define i32 @test2b(i32 %A) {
-; ALL-LABEL: @test2b(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %A, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.cttz.i32(i32 %A, i1 true)
-; ALL-NEXT: select i1 [[COND]], i32 32, i32 [[CTTZ]]
-; ALL: ret
+; BMI-LABEL: @test2b(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[A]], i1 true)
+; BMI-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]]
+; BMI-NEXT:    ret i32 [[SPEC_SELECT]]
+;
+; LZCNT-LABEL: @test2b(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[A]], i1 true)
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]]
+; LZCNT-NEXT:    ret i32 [[COND]]
+;
+; GENERIC-LABEL: @test2b(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[A]], i1 true)
+; GENERIC-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]]
+; GENERIC-NEXT:    ret i32 [[COND]]
+;
 entry:
   %tobool = icmp eq i32 %A, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -103,11 +184,27 @@
 
 
 define signext i16 @test3b(i16 signext %A) {
-; ALL-LABEL: @test3b(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i16 %A, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i16 @llvm.cttz.i16(i16 %A, i1 true)
-; ALL-NEXT: select i1 [[COND]], i16 16, i16 [[CTTZ]]
-; ALL: ret
+; BMI-LABEL: @test3b(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i16 [[A:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i16 @llvm.cttz.i16(i16 [[A]], i1 true)
+; BMI-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i16 16, i16 [[TMP0]]
+; BMI-NEXT:    ret i16 [[SPEC_SELECT]]
+;
+; LZCNT-LABEL: @test3b(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i16 [[A:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i16 @llvm.cttz.i16(i16 [[A]], i1 true)
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 16, i16 [[TMP0]]
+; LZCNT-NEXT:    ret i16 [[COND]]
+;
+; GENERIC-LABEL: @test3b(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i16 [[A:%.*]], 0
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i16 @llvm.cttz.i16(i16 [[A]], i1 true)
+; GENERIC-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 16, i16 [[TMP0]]
+; GENERIC-NEXT:    ret i16 [[COND]]
+;
 entry:
   %tobool = icmp eq i16 %A, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -126,14 +223,38 @@
 ; for the target.
 
 define i64 @test1e(i32 %x) {
-; ALL-LABEL: @test1e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %x, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.cttz.i32(i32 %x, i1 true)
-; ALL: [[ZEXT:%[A-Za-z0-9]+]] = zext i32 [[CTTZ]] to i64
-; BMI-NEXT: select i1 [[COND]], i64 32, i64 [[ZEXT]]
-; LZCNT-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test1e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X]], i1 true)
+; BMI-NEXT:    [[PHITMP2:%.*]] = zext i32 [[TMP0]] to i64
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i64 32, i64 [[PHITMP2]]
+; BMI-NEXT:    ret i64 [[COND]]
+;
+; LZCNT-LABEL: @test1e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; LZCNT-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; LZCNT:       cond.true:
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X]], i1 true)
+; LZCNT-NEXT:    [[PHITMP2:%.*]] = zext i32 [[TMP0]] to i64
+; LZCNT-NEXT:    br label [[COND_END]]
+; LZCNT:       cond.end:
+; LZCNT-NEXT:    [[COND:%.*]] = phi i64 [ [[PHITMP2]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; LZCNT-NEXT:    ret i64 [[COND]]
+;
+; GENERIC-LABEL: @test1e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X]], i1 true)
+; GENERIC-NEXT:    [[PHITMP2:%.*]] = zext i32 [[TMP0]] to i64
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i64 [ [[PHITMP2]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i64 [[COND]]
+;
 entry:
   %tobool = icmp eq i32 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -149,14 +270,38 @@
 }
 
 define i32 @test2e(i64 %x) {
-; ALL-LABEL: @test2e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %x, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.cttz.i64(i64 %x, i1 true)
-; ALL: [[TRUNC:%[A-Za-z0-9]+]] = trunc i64 [[CTTZ]] to i32
-; BMI-NEXT: select i1 [[COND]], i32 64, i32 [[TRUNC]]
-; LZCNT-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test2e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[X]], i1 true)
+; BMI-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i32
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i32 64, i32 [[CAST]]
+; BMI-NEXT:    ret i32 [[COND]]
+;
+; LZCNT-LABEL: @test2e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; LZCNT-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; LZCNT:       cond.true:
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[X]], i1 true)
+; LZCNT-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i32
+; LZCNT-NEXT:    br label [[COND_END]]
+; LZCNT:       cond.end:
+; LZCNT-NEXT:    [[COND:%.*]] = phi i32 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; LZCNT-NEXT:    ret i32 [[COND]]
+;
+; GENERIC-LABEL: @test2e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[X]], i1 true)
+; GENERIC-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i32
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i32 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i32 [[COND]]
+;
 entry:
   %tobool = icmp eq i64 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -172,14 +317,38 @@
 }
 
 define i64 @test3e(i32 %x) {
-; ALL-LABEL: @test3e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %x, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.ctlz.i32(i32 %x, i1 true)
-; ALL: [[ZEXT:%[A-Za-z0-9]+]] = zext i32 [[CTLZ]] to i64
-; LZCNT-NEXT: select i1 [[COND]], i64 32, i64 [[ZEXT]]
-; BMI-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test3e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; BMI-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; BMI:       cond.true:
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X]], i1 true)
+; BMI-NEXT:    [[PHITMP2:%.*]] = zext i32 [[TMP0]] to i64
+; BMI-NEXT:    br label [[COND_END]]
+; BMI:       cond.end:
+; BMI-NEXT:    [[COND:%.*]] = phi i64 [ [[PHITMP2]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; BMI-NEXT:    ret i64 [[COND]]
+;
+; LZCNT-LABEL: @test3e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X]], i1 true)
+; LZCNT-NEXT:    [[PHITMP2:%.*]] = zext i32 [[TMP0]] to i64
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i64 32, i64 [[PHITMP2]]
+; LZCNT-NEXT:    ret i64 [[COND]]
+;
+; GENERIC-LABEL: @test3e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X]], i1 true)
+; GENERIC-NEXT:    [[PHITMP2:%.*]] = zext i32 [[TMP0]] to i64
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i64 [ [[PHITMP2]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i64 [[COND]]
+;
 entry:
   %tobool = icmp eq i32 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -195,14 +364,38 @@
 }
 
 define i32 @test4e(i64 %x) {
-; ALL-LABEL: @test4e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %x, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.ctlz.i64(i64 %x, i1 true)
-; ALL: [[TRUNC:%[A-Za-z0-9]+]] = trunc i64 [[CTLZ]] to i32
-; LZCNT-NEXT: select i1 [[COND]], i32 64, i32 [[TRUNC]]
-; BMI-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test4e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; BMI-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; BMI:       cond.true:
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[X]], i1 true)
+; BMI-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i32
+; BMI-NEXT:    br label [[COND_END]]
+; BMI:       cond.end:
+; BMI-NEXT:    [[COND:%.*]] = phi i32 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; BMI-NEXT:    ret i32 [[COND]]
+;
+; LZCNT-LABEL: @test4e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[X]], i1 true)
+; LZCNT-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i32
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i32 64, i32 [[CAST]]
+; LZCNT-NEXT:    ret i32 [[COND]]
+;
+; GENERIC-LABEL: @test4e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[X]], i1 true)
+; GENERIC-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i32
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i32 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i32 [[COND]]
+;
 entry:
   %tobool = icmp eq i64 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -218,14 +411,38 @@
 }
 
 define i16 @test5e(i64 %x) {
-; ALL-LABEL: @test5e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %x, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.ctlz.i64(i64 %x, i1 true)
-; ALL: [[TRUNC:%[A-Za-z0-9]+]] = trunc i64 [[CTLZ]] to i16
-; LZCNT-NEXT: select i1 [[COND]], i16 64, i16 [[TRUNC]]
-; BMI-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test5e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; BMI-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; BMI:       cond.true:
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[X]], i1 true)
+; BMI-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i16
+; BMI-NEXT:    br label [[COND_END]]
+; BMI:       cond.end:
+; BMI-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; BMI-NEXT:    ret i16 [[COND]]
+;
+; LZCNT-LABEL: @test5e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[X]], i1 true)
+; LZCNT-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i16
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 64, i16 [[CAST]]
+; LZCNT-NEXT:    ret i16 [[COND]]
+;
+; GENERIC-LABEL: @test5e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.ctlz.i64(i64 [[X]], i1 true)
+; GENERIC-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i16
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i16 [[COND]]
+;
 entry:
   %tobool = icmp eq i64 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -241,14 +458,38 @@
 }
 
 define i16 @test6e(i32 %x) {
-; ALL-LABEL: @test6e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %x, 0
-; ALL: [[CTLZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.ctlz.i32(i32 %x, i1 true)
-; ALL: [[TRUNC:%[A-Za-z0-9]+]] = trunc i32 [[CTLZ]] to i16
-; LZCNT-NEXT: select i1 [[COND]], i16 32, i16 [[TRUNC]]
-; BMI-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test6e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; BMI-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; BMI:       cond.true:
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X]], i1 true)
+; BMI-NEXT:    [[CAST:%.*]] = trunc i32 [[TMP0]] to i16
+; BMI-NEXT:    br label [[COND_END]]
+; BMI:       cond.end:
+; BMI-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; BMI-NEXT:    ret i16 [[COND]]
+;
+; LZCNT-LABEL: @test6e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X]], i1 true)
+; LZCNT-NEXT:    [[CAST:%.*]] = trunc i32 [[TMP0]] to i16
+; LZCNT-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 32, i16 [[CAST]]
+; LZCNT-NEXT:    ret i16 [[COND]]
+;
+; GENERIC-LABEL: @test6e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X]], i1 true)
+; GENERIC-NEXT:    [[CAST:%.*]] = trunc i32 [[TMP0]] to i16
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i16 [[COND]]
+;
 entry:
   %tobool = icmp eq i32 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -264,14 +505,38 @@
 }
 
 define i16 @test7e(i64 %x) {
-; ALL-LABEL: @test7e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i64 %x, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.cttz.i64(i64 %x, i1 true)
-; ALL: [[TRUNC:%[A-Za-z0-9]+]] = trunc i64 [[CTTZ]] to i16
-; BMI-NEXT: select i1 [[COND]], i16 64, i16 [[TRUNC]]
-; LZCNT-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test7e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[X]], i1 true)
+; BMI-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i16
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 64, i16 [[CAST]]
+; BMI-NEXT:    ret i16 [[COND]]
+;
+; LZCNT-LABEL: @test7e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; LZCNT-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; LZCNT:       cond.true:
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[X]], i1 true)
+; LZCNT-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i16
+; LZCNT-NEXT:    br label [[COND_END]]
+; LZCNT:       cond.end:
+; LZCNT-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; LZCNT-NEXT:    ret i16 [[COND]]
+;
+; GENERIC-LABEL: @test7e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i64 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.cttz.i64(i64 [[X]], i1 true)
+; GENERIC-NEXT:    [[CAST:%.*]] = trunc i64 [[TMP0]] to i16
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 64, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i16 [[COND]]
+;
 entry:
   %tobool = icmp eq i64 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
@@ -287,14 +552,38 @@
 }
 
 define i16 @test8e(i32 %x) {
-; ALL-LABEL: @test8e(
-; ALL: [[COND:%[A-Za-z0-9]+]] = icmp eq i32 %x, 0
-; ALL: [[CTTZ:%[A-Za-z0-9]+]] = tail call i32 @llvm.cttz.i32(i32 %x, i1 true)
-; ALL: [[TRUNC:%[A-Za-z0-9]+]] = trunc i32 [[CTTZ]] to i16
-; BMI-NEXT: select i1 [[COND]], i16 32, i16 [[TRUNC]]
-; LZCNT-NOT: select
-; GENERIC-NOT: select
-; ALL: ret
+; BMI-LABEL: @test8e(
+; BMI-NEXT:  entry:
+; BMI-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; BMI-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X]], i1 true)
+; BMI-NEXT:    [[CAST:%.*]] = trunc i32 [[TMP0]] to i16
+; BMI-NEXT:    [[COND:%.*]] = select i1 [[TOBOOL]], i16 32, i16 [[CAST]]
+; BMI-NEXT:    ret i16 [[COND]]
+;
+; LZCNT-LABEL: @test8e(
+; LZCNT-NEXT:  entry:
+; LZCNT-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; LZCNT-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; LZCNT:       cond.true:
+; LZCNT-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X]], i1 true)
+; LZCNT-NEXT:    [[CAST:%.*]] = trunc i32 [[TMP0]] to i16
+; LZCNT-NEXT:    br label [[COND_END]]
+; LZCNT:       cond.end:
+; LZCNT-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; LZCNT-NEXT:    ret i16 [[COND]]
+;
+; GENERIC-LABEL: @test8e(
+; GENERIC-NEXT:  entry:
+; GENERIC-NEXT:    [[TOBOOL:%.*]] = icmp eq i32 [[X:%.*]], 0
+; GENERIC-NEXT:    br i1 [[TOBOOL]], label [[COND_END:%.*]], label [[COND_TRUE:%.*]]
+; GENERIC:       cond.true:
+; GENERIC-NEXT:    [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X]], i1 true)
+; GENERIC-NEXT:    [[CAST:%.*]] = trunc i32 [[TMP0]] to i16
+; GENERIC-NEXT:    br label [[COND_END]]
+; GENERIC:       cond.end:
+; GENERIC-NEXT:    [[COND:%.*]] = phi i16 [ [[CAST]], [[COND_TRUE]] ], [ 32, [[ENTRY:%.*]] ]
+; GENERIC-NEXT:    ret i16 [[COND]]
+;
 entry:
   %tobool = icmp eq i32 %x, 0
   br i1 %tobool, label %cond.end, label %cond.true
Index: test/Transforms/SimplifyCFG/X86/switch-covered-bug.ll
===================================================================
--- test/Transforms/SimplifyCFG/X86/switch-covered-bug.ll
+++ test/Transforms/SimplifyCFG/X86/switch-covered-bug.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S -simplifycfg -switch-to-lookup < %s -mtriple=x86_64-apple-darwin12.0.0 | FileCheck %s
 ; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' < %s -mtriple=x86_64-apple-darwin12.0.0 | FileCheck %s
 
@@ -16,14 +17,23 @@
 ; CHECK-NEXT: add i64
 ; CHECK-NEXT: ret i64
 define i64 @test(i3 %arg) {
+; CHECK-LABEL: @test(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i3 [[ARG:%.*]], -4
+; CHECK-NEXT:    [[SWITCH_TABLEIDX_ZEXT:%.*]] = zext i3 [[SWITCH_TABLEIDX]] to i4
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [8 x i64], [8 x i64]* @switch.table.test, i32 0, i4 [[SWITCH_TABLEIDX_ZEXT]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i64, i64* [[SWITCH_GEP]]
+; CHECK-NEXT:    [[V3:%.*]] = add i64 [[SWITCH_LOAD]], 0
+; CHECK-NEXT:    ret i64 [[V3]]
+;
 entry:
   switch i3 %arg, label %Default [
-    i3 -2, label %Label6
-    i3 1, label %Label1
-    i3 2, label %Label2
-    i3 3, label %Label3
-    i3 -4, label %Label4
-    i3 -3, label %Label5
+  i3 -2, label %Label6
+  i3 1, label %Label1
+  i3 2, label %Label2
+  i3 3, label %Label3
+  i3 -4, label %Label4
+  i3 -3, label %Label5
   ]
 
 Default:
Index: test/Transforms/SimplifyCFG/X86/switch-table-bug.ll
===================================================================
--- test/Transforms/SimplifyCFG/X86/switch-table-bug.ll
+++ test/Transforms/SimplifyCFG/X86/switch-table-bug.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S -simplifycfg -switch-to-lookup < %s -mtriple=x86_64-apple-darwin12.0.0 | FileCheck %s
 ; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' < %s -mtriple=x86_64-apple-darwin12.0.0 | FileCheck %s
 
@@ -14,12 +15,20 @@
 ; CHECK-NEXT: load i64, i64* %switch.gep
 ; CHECK-NEXT: ret i64 %switch.load
 define i64 @_TFO6reduce1E5toRawfS0_FT_Si(i2) {
+; CHECK-LABEL: @_TFO6reduce1E5toRawfS0_FT_Si(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i2 [[TMP0:%.*]], -2
+; CHECK-NEXT:    [[SWITCH_TABLEIDX_ZEXT:%.*]] = zext i2 [[SWITCH_TABLEIDX]] to i3
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x i64], [4 x i64]* @switch.table._TFO6reduce1E5toRawfS0_FT_Si, i32 0, i3 [[SWITCH_TABLEIDX_ZEXT]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i64, i64* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i64 [[SWITCH_LOAD]]
+;
 entry:
   switch i2 %0, label %1 [
-    i2 0, label %2
-    i2 1, label %3
-    i2 -2, label %4
-    i2 -1, label %5
+  i2 0, label %2
+  i2 1, label %3
+  i2 -2, label %4
+  i2 -1, label %5
   ]
 
 ; <label>:1                                       ; preds = %entry
Index: test/Transforms/SimplifyCFG/X86/switch_to_lookup_table.ll
===================================================================
--- test/Transforms/SimplifyCFG/X86/switch_to_lookup_table.ll
+++ test/Transforms/SimplifyCFG/X86/switch_to_lookup_table.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -simplifycfg -switch-to-lookup=true -keep-loops=false -S -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
 ; RUN: opt < %s -passes='simplify-cfg<no-keep-loops;switch-to-lookup>' -S -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
@@ -33,15 +34,27 @@
 ; so we return early, directly from the lookup bb.
 
 define i32 @f(i32 %c) {
+; CHECK-LABEL: @f(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[C:%.*]], 42
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 7
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [7 x i32], [7 x i32]* @switch.table.f, i32 0, i32 [[SWITCH_TABLEIDX]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i32 15
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 42, label %return
-    i32 43, label %sw.bb1
-    i32 44, label %sw.bb2
-    i32 45, label %sw.bb3
-    i32 46, label %sw.bb4
-    i32 47, label %sw.bb5
-    i32 48, label %sw.bb6
+  i32 42, label %return
+  i32 43, label %sw.bb1
+  i32 44, label %sw.bb2
+  i32 45, label %sw.bb3
+  i32 46, label %sw.bb4
+  i32 47, label %sw.bb5
+  i32 48, label %sw.bb6
   ]
 
 sw.bb1: br label %return
@@ -55,33 +68,34 @@
   %retval.0 = phi i32 [ 15, %sw.default ], [ 1, %sw.bb6 ], [ 62, %sw.bb5 ], [ 27, %sw.bb4 ], [ -1, %sw.bb3 ], [ 0, %sw.bb2 ], [ 123, %sw.bb1 ], [ 55, %entry ]
   ret i32 %retval.0
 
-; CHECK-LABEL: @f(
-; CHECK: entry:
-; CHECK-NEXT: %switch.tableidx = sub i32 %c, 42
-; CHECK-NEXT: %0 = icmp ult i32 %switch.tableidx, 7
-; CHECK-NEXT: br i1 %0, label %switch.lookup, label %return
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.gep = getelementptr inbounds [7 x i32], [7 x i32]* @switch.table.f, i32 0, i32 %switch.tableidx
-; CHECK-NEXT: %switch.load = load i32, i32* %switch.gep
-; CHECK-NEXT: ret i32 %switch.load
-; CHECK: return:
-; CHECK-NEXT: ret i32 15
 }
 
 ; Same thing, but with i8's
 
 define i8 @char(i32 %c) {
+; CHECK-LABEL: @char(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[C:%.*]], 42
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 9
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [9 x i8], [9 x i8]* @switch.table.char, i32 0, i32 [[SWITCH_TABLEIDX]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i8, i8* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i8 [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i8 15
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 42, label %return
-    i32 43, label %sw.bb1
-    i32 44, label %sw.bb2
-    i32 45, label %sw.bb3
-    i32 46, label %sw.bb4
-    i32 47, label %sw.bb5
-    i32 48, label %sw.bb6
-    i32 49, label %sw.bb7
-    i32 50, label %sw.bb8
+  i32 42, label %return
+  i32 43, label %sw.bb1
+  i32 44, label %sw.bb2
+  i32 45, label %sw.bb3
+  i32 46, label %sw.bb4
+  i32 47, label %sw.bb5
+  i32 48, label %sw.bb6
+  i32 49, label %sw.bb7
+  i32 50, label %sw.bb8
   ]
 
 sw.bb1: br label %return
@@ -97,29 +111,35 @@
   %retval.0 = phi i8 [ 15, %sw.default ], [ 84, %sw.bb8 ], [ 33, %sw.bb7 ], [ 1, %sw.bb6 ], [ 62, %sw.bb5 ], [ 27, %sw.bb4 ], [ -1, %sw.bb3 ], [ 0, %sw.bb2 ], [ 123, %sw.bb1 ], [ 55, %entry ]
   ret i8 %retval.0
 
-; CHECK-LABEL: @char(
-; CHECK: entry:
-; CHECK-NEXT: %switch.tableidx = sub i32 %c, 42
-; CHECK-NEXT: %0 = icmp ult i32 %switch.tableidx, 9
-; CHECK-NEXT: br i1 %0, label %switch.lookup, label %return
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.gep = getelementptr inbounds [9 x i8], [9 x i8]* @switch.table.char, i32 0, i32 %switch.tableidx
-; CHECK-NEXT: %switch.load = load i8, i8* %switch.gep
-; CHECK-NEXT: ret i8 %switch.load
-; CHECK: return:
-; CHECK-NEXT: ret i8 15
 }
 
 ; A switch used to initialize two variables, an i8 and a float.
 
 declare void @dummy(i8 signext, float)
 define void @h(i32 %x) {
+; CHECK-LABEL: @h(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[SW_EPILOG:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_SHIFTAMT:%.*]] = mul i32 [[X]], 8
+; CHECK-NEXT:    [[SWITCH_DOWNSHIFT:%.*]] = lshr i32 89655594, [[SWITCH_SHIFTAMT]]
+; CHECK-NEXT:    [[SWITCH_MASKED:%.*]] = trunc i32 [[SWITCH_DOWNSHIFT]] to i8
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x float], [4 x float]* @switch.table.h, i32 0, i32 [[X]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load float, float* [[SWITCH_GEP]]
+; CHECK-NEXT:    br label [[SW_EPILOG]]
+; CHECK:       sw.epilog:
+; CHECK-NEXT:    [[A_0:%.*]] = phi i8 [ [[SWITCH_MASKED]], [[SWITCH_LOOKUP]] ], [ 7, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    [[B_0:%.*]] = phi float [ [[SWITCH_LOAD]], [[SWITCH_LOOKUP]] ], [ 0x4023FAE140000000, [[ENTRY]] ]
+; CHECK-NEXT:    call void @dummy(i8 signext [[A_0]], float [[B_0]])
+; CHECK-NEXT:    ret void
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.epilog
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %sw.epilog
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 
 sw.bb1: br label %sw.epilog
@@ -133,22 +153,6 @@
   call void @dummy(i8 signext %a.0, float %b.0)
   ret void
 
-; CHECK-LABEL: @h(
-; CHECK: entry:
-; CHECK-NEXT: %0 = icmp ult i32 %x, 4
-; CHECK-NEXT: br i1 %0, label %switch.lookup, label %sw.epilog
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.shiftamt = mul i32 %x, 8
-; CHECK-NEXT: %switch.downshift = lshr i32 89655594, %switch.shiftamt
-; CHECK-NEXT: %switch.masked = trunc i32 %switch.downshift to i8
-; CHECK-NEXT: %switch.gep = getelementptr inbounds [4 x float], [4 x float]* @switch.table.h, i32 0, i32 %x
-; CHECK-NEXT: %switch.load = load float, float* %switch.gep
-; CHECK-NEXT: br label %sw.epilog
-; CHECK: sw.epilog:
-; CHECK-NEXT: %a.0 = phi i8 [ %switch.masked, %switch.lookup ], [ 7, %entry ]
-; CHECK-NEXT: %b.0 = phi float [ %switch.load, %switch.lookup ], [ 0x4023FAE140000000, %entry ]
-; CHECK-NEXT: call void @dummy(i8 signext %a.0, float %b.0)
-; CHECK-NEXT: ret void
 }
 
 
@@ -161,12 +165,23 @@
 @.str4 = private unnamed_addr constant [6 x i8] c"error\00", align 1
 
 define i8* @foostring(i32 %x)  {
+; CHECK-LABEL: @foostring(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x i8*], [4 x i8*]* @switch.table.foostring, i32 0, i32 [[X]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i8*, i8** [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i8* [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str4, i64 0, i64 0)
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %return
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %return
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 
 sw.bb1: br label %return
@@ -176,32 +191,35 @@
 
 return:
   %retval.0 = phi i8* [ getelementptr inbounds ([6 x i8], [6 x i8]* @.str4, i64 0, i64 0), %sw.default ],
-                      [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str3, i64 0, i64 0), %sw.bb3 ],
-                      [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str2, i64 0, i64 0), %sw.bb2 ],
-                      [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str1, i64 0, i64 0), %sw.bb1 ],
-                      [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), %entry ]
+  [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str3, i64 0, i64 0), %sw.bb3 ],
+  [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str2, i64 0, i64 0), %sw.bb2 ],
+  [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str1, i64 0, i64 0), %sw.bb1 ],
+  [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), %entry ]
   ret i8* %retval.0
 
-; CHECK-LABEL: @foostring(
-; CHECK: entry:
-; CHECK-NEXT: %0 = icmp ult i32 %x, 4
-; CHECK-NEXT: br i1 %0, label %switch.lookup, label %return
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.gep = getelementptr inbounds [4 x i8*], [4 x i8*]* @switch.table.foostring, i32 0, i32 %x
-; CHECK-NEXT: %switch.load = load i8*, i8** %switch.gep
-; CHECK-NEXT: ret i8* %switch.load
 }
 
 ; Switch used to initialize two values. The first value is returned, the second
 ; value is not used. This used to make the transformation generate illegal code.
 
 define i32 @earlyreturncrash(i32 %x)  {
+; CHECK-LABEL: @earlyreturncrash(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[SW_EPILOG:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* @switch.table.earlyreturncrash, i32 0, i32 [[X]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+; CHECK:       sw.epilog:
+; CHECK-NEXT:    ret i32 7
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.epilog
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %sw.epilog
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 
 sw.bb1: br label %sw.epilog
@@ -214,13 +232,6 @@
   %b.0 = phi i32 [ 10, %sw.default ], [ 5, %sw.bb3 ], [ 1, %sw.bb2 ], [ 4, %sw.bb1 ], [ 3, %entry ]
   ret i32 %a.0
 
-; CHECK-LABEL: @earlyreturncrash(
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.gep = getelementptr inbounds [4 x i32], [4 x i32]* @switch.table.earlyreturncrash, i32 0, i32 %x
-; CHECK-NEXT: %switch.load = load i32, i32* %switch.gep
-; CHECK-NEXT: ret i32 %switch.load
-; CHECK: sw.epilog:
-; CHECK-NEXT: ret i32 7
 }
 
 
@@ -229,21 +240,40 @@
 ; can be packed into a bitmap.
 
 define i32 @crud(i8 zeroext %c)  {
+; CHECK-LABEL: @crud(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[C:%.*]], 33
+; CHECK-NEXT:    br i1 [[CMP]], label [[LOR_END:%.*]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i8 [[C]], 34
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i8 [[SWITCH_TABLEIDX]], 59
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[LOR_END]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_CAST:%.*]] = zext i8 [[SWITCH_TABLEIDX]] to i59
+; CHECK-NEXT:    [[SWITCH_SHIFTAMT:%.*]] = mul i59 [[SWITCH_CAST]], 1
+; CHECK-NEXT:    [[SWITCH_DOWNSHIFT:%.*]] = lshr i59 -288230375765830623, [[SWITCH_SHIFTAMT]]
+; CHECK-NEXT:    [[SWITCH_MASKED:%.*]] = trunc i59 [[SWITCH_DOWNSHIFT]] to i1
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP1:%.*]] = phi i1 [ true, [[ENTRY:%.*]] ], [ [[SWITCH_MASKED]], [[SWITCH_LOOKUP]] ], [ false, [[SWITCH_EARLY_TEST]] ]
+; CHECK-NEXT:    [[LOR_EXT:%.*]] = zext i1 [[TMP1]] to i32
+; CHECK-NEXT:    ret i32 [[LOR_EXT]]
+;
 entry:
   %cmp = icmp ult i8 %c, 33
   br i1 %cmp, label %lor.end, label %switch.early.test
 
 switch.early.test:
   switch i8 %c, label %lor.rhs [
-    i8 92, label %lor.end
-    i8 62, label %lor.end
-    i8 60, label %lor.end
-    i8 59, label %lor.end
-    i8 58, label %lor.end
-    i8 46, label %lor.end
-    i8 44, label %lor.end
-    i8 34, label %lor.end
-    i8 39, label %switch.edge
+  i8 92, label %lor.end
+  i8 62, label %lor.end
+  i8 60, label %lor.end
+  i8 59, label %lor.end
+  i8 58, label %lor.end
+  i8 46, label %lor.end
+  i8 44, label %lor.end
+  i8 34, label %lor.end
+  i8 39, label %switch.edge
   ]
 
 switch.edge: br label %lor.end
@@ -251,49 +281,49 @@
 
 lor.end:
   %0 = phi i1 [ true, %switch.early.test ],
-              [ false, %lor.rhs ],
-              [ true, %entry ],
-              [ true, %switch.early.test ],
-              [ true, %switch.early.test ],
-              [ true, %switch.early.test ],
-              [ true, %switch.early.test ],
-              [ true, %switch.early.test ],
-              [ true, %switch.early.test ],
-              [ true, %switch.early.test ],
-              [ true, %switch.edge ]
+  [ false, %lor.rhs ],
+  [ true, %entry ],
+  [ true, %switch.early.test ],
+  [ true, %switch.early.test ],
+  [ true, %switch.early.test ],
+  [ true, %switch.early.test ],
+  [ true, %switch.early.test ],
+  [ true, %switch.early.test ],
+  [ true, %switch.early.test ],
+  [ true, %switch.edge ]
   %lor.ext = zext i1 %0 to i32
   ret i32 %lor.ext
 
-; CHECK-LABEL: @crud(
-; CHECK: entry:
-; CHECK-NEXT: %cmp = icmp ult i8 %c, 33
-; CHECK-NEXT: br i1 %cmp, label %lor.end, label %switch.early.test
-; CHECK: switch.early.test:
-; CHECK-NEXT: %switch.tableidx = sub i8 %c, 34
-; CHECK-NEXT: %0 = icmp ult i8 %switch.tableidx, 59
-; CHECK-NEXT: br i1 %0, label %switch.lookup, label %lor.end
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.cast = zext i8 %switch.tableidx to i59
-; CHECK-NEXT: %switch.shiftamt = mul i59 %switch.cast, 1
-; CHECK-NEXT: %switch.downshift = lshr i59 -288230375765830623, %switch.shiftamt
-; CHECK-NEXT: %switch.masked = trunc i59 %switch.downshift to i1
-; CHECK-NEXT: br label %lor.end
-; CHECK: lor.end:
-; CHECK-NEXT: %1 = phi i1 [ true, %entry ], [ %switch.masked, %switch.lookup ], [ false, %switch.early.test ]
-; CHECK-NEXT: %lor.ext = zext i1 %1 to i32
-; CHECK-NEXT: ret i32 %lor.ext
 }
 
 ; PR13946
 define i32 @overflow(i32 %type) {
+; CHECK-LABEL: @overflow(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[TYPE:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 3, label [[SW_BB3:%.*]]
+; CHECK-NEXT:    i32 -2147483645, label [[SW_BB3]]
+; CHECK-NEXT:    i32 1, label [[SW_BB1:%.*]]
+; CHECK-NEXT:    i32 2, label [[SW_BB2:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       sw.bb1:
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       sw.bb2:
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       sw.bb3:
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       if.end:
+; CHECK-NEXT:    [[DIRENT_TYPE_0:%.*]] = phi i32 [ 6, [[SW_BB3]] ], [ 5, [[SW_BB2]] ], [ 0, [[SW_BB1]] ], [ 3, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    ret i32 [[DIRENT_TYPE_0]]
+;
 entry:
   switch i32 %type, label %sw.default [
-    i32 -2147483648, label %sw.bb
-    i32 0, label %sw.bb
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 -2147483645, label %sw.bb3
-    i32 3, label %sw.bb3
+  i32 -2147483648, label %sw.bb
+  i32 0, label %sw.bb
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 -2147483645, label %sw.bb3
+  i32 3, label %sw.bb3
   ]
 
 sw.bb: br label %if.end
@@ -306,19 +336,29 @@
 if.end:
   %dirent_type.0 = phi i32 [ 3, %sw.default ], [ 6, %sw.bb3 ], [ 5, %sw.bb2 ], [ 0, %sw.bb1 ], [ 3, %sw.bb ], [ 0, %if.else ]
   ret i32 %dirent_type.0
-; CHECK-LABEL: define i32 @overflow(
-; CHECK: switch
-; CHECK: phi
 }
 
 ; PR13985
 define i1 @undef(i32 %tmp) {
+; CHECK-LABEL: @undef(
+; CHECK-NEXT:  bb:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[TMP:%.*]], 9
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[BB3:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_CAST:%.*]] = trunc i32 [[TMP]] to i9
+; CHECK-NEXT:    [[SWITCH_SHIFTAMT:%.*]] = mul i9 [[SWITCH_CAST]], 1
+; CHECK-NEXT:    [[SWITCH_DOWNSHIFT:%.*]] = lshr i9 3, [[SWITCH_SHIFTAMT]]
+; CHECK-NEXT:    [[SWITCH_MASKED:%.*]] = trunc i9 [[SWITCH_DOWNSHIFT]] to i1
+; CHECK-NEXT:    ret i1 [[SWITCH_MASKED]]
+; CHECK:       bb3:
+; CHECK-NEXT:    ret i1 undef
+;
 bb:
   switch i32 %tmp, label %bb3 [
-    i32 0, label %bb1
-    i32 1, label %bb1
-    i32 7, label %bb2
-    i32 8, label %bb2
+  i32 0, label %bb1
+  i32 1, label %bb1
+  i32 7, label %bb2
+  i32 8, label %bb2
   ]
 
 bb1: br label %bb3
@@ -327,9 +367,6 @@
 bb3:
   %tmp4 = phi i1 [ undef, %bb ], [ false, %bb2 ], [ true, %bb1 ]
   ret i1 %tmp4
-; CHECK-LABEL: define i1 @undef(
-; CHECK: %switch.cast = trunc i32 %tmp to i9
-; CHECK: %switch.downshift = lshr i9 3, %switch.shiftamt
 }
 
 ; Also handle large switches that would be rejected by
@@ -337,6 +374,21 @@
 ; CHECK: large
 ; CHECK-NOT: switch i32
 define i32 @large(i32 %x) {
+; CHECK-LABEL: @large(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[X:%.*]], 0
+; CHECK-NEXT:    [[MUL:%.*]] = mul i32 [[X]], -10
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[CMP]], i32 [[MUL]], i32 [[X]]
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[SPEC_SELECT]], 1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 199
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [199 x i32], [199 x i32]* @switch.table.large, i32 0, i32 [[SWITCH_TABLEIDX]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i32 0
+;
 entry:
   %cmp = icmp slt i32 %x, 0
   br i1 %cmp, label %if.then, label %if.end
@@ -348,205 +400,205 @@
 if.end:
   %x.addr.0 = phi i32 [ %mul, %if.then ], [ %x, %entry ]
   switch i32 %x.addr.0, label %return [
-    i32 199, label %sw.bb203
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
-    i32 4, label %sw.bb4
-    i32 5, label %sw.bb5
-    i32 6, label %sw.bb6
-    i32 7, label %sw.bb7
-    i32 8, label %sw.bb8
-    i32 9, label %sw.bb9
-    i32 10, label %sw.bb10
-    i32 11, label %sw.bb11
-    i32 12, label %sw.bb12
-    i32 13, label %sw.bb13
-    i32 14, label %sw.bb14
-    i32 15, label %sw.bb15
-    i32 16, label %sw.bb16
-    i32 17, label %sw.bb17
-    i32 18, label %sw.bb18
-    i32 19, label %sw.bb19
-    i32 20, label %sw.bb20
-    i32 21, label %sw.bb21
-    i32 22, label %sw.bb22
-    i32 23, label %sw.bb23
-    i32 24, label %sw.bb24
-    i32 25, label %sw.bb25
-    i32 26, label %sw.bb26
-    i32 27, label %sw.bb27
-    i32 28, label %sw.bb28
-    i32 29, label %sw.bb29
-    i32 30, label %sw.bb30
-    i32 31, label %sw.bb31
-    i32 32, label %sw.bb32
-    i32 33, label %sw.bb33
-    i32 34, label %sw.bb34
-    i32 35, label %sw.bb35
-    i32 36, label %sw.bb37
-    i32 37, label %sw.bb38
-    i32 38, label %sw.bb39
-    i32 39, label %sw.bb40
-    i32 40, label %sw.bb41
-    i32 41, label %sw.bb42
-    i32 42, label %sw.bb43
-    i32 43, label %sw.bb44
-    i32 44, label %sw.bb45
-    i32 45, label %sw.bb47
-    i32 46, label %sw.bb48
-    i32 47, label %sw.bb49
-    i32 48, label %sw.bb50
-    i32 49, label %sw.bb51
-    i32 50, label %sw.bb52
-    i32 51, label %sw.bb53
-    i32 52, label %sw.bb54
-    i32 53, label %sw.bb55
-    i32 54, label %sw.bb56
-    i32 55, label %sw.bb58
-    i32 56, label %sw.bb59
-    i32 57, label %sw.bb60
-    i32 58, label %sw.bb61
-    i32 59, label %sw.bb62
-    i32 60, label %sw.bb63
-    i32 61, label %sw.bb64
-    i32 62, label %sw.bb65
-    i32 63, label %sw.bb66
-    i32 64, label %sw.bb67
-    i32 65, label %sw.bb68
-    i32 66, label %sw.bb69
-    i32 67, label %sw.bb70
-    i32 68, label %sw.bb71
-    i32 69, label %sw.bb72
-    i32 70, label %sw.bb73
-    i32 71, label %sw.bb74
-    i32 72, label %sw.bb76
-    i32 73, label %sw.bb77
-    i32 74, label %sw.bb78
-    i32 75, label %sw.bb79
-    i32 76, label %sw.bb80
-    i32 77, label %sw.bb81
-    i32 78, label %sw.bb82
-    i32 79, label %sw.bb83
-    i32 80, label %sw.bb84
-    i32 81, label %sw.bb85
-    i32 82, label %sw.bb86
-    i32 83, label %sw.bb87
-    i32 84, label %sw.bb88
-    i32 85, label %sw.bb89
-    i32 86, label %sw.bb90
-    i32 87, label %sw.bb91
-    i32 88, label %sw.bb92
-    i32 89, label %sw.bb93
-    i32 90, label %sw.bb94
-    i32 91, label %sw.bb95
-    i32 92, label %sw.bb96
-    i32 93, label %sw.bb97
-    i32 94, label %sw.bb98
-    i32 95, label %sw.bb99
-    i32 96, label %sw.bb100
-    i32 97, label %sw.bb101
-    i32 98, label %sw.bb102
-    i32 99, label %sw.bb103
-    i32 100, label %sw.bb104
-    i32 101, label %sw.bb105
-    i32 102, label %sw.bb106
-    i32 103, label %sw.bb107
-    i32 104, label %sw.bb108
-    i32 105, label %sw.bb109
-    i32 106, label %sw.bb110
-    i32 107, label %sw.bb111
-    i32 108, label %sw.bb112
-    i32 109, label %sw.bb113
-    i32 110, label %sw.bb114
-    i32 111, label %sw.bb115
-    i32 112, label %sw.bb116
-    i32 113, label %sw.bb117
-    i32 114, label %sw.bb118
-    i32 115, label %sw.bb119
-    i32 116, label %sw.bb120
-    i32 117, label %sw.bb121
-    i32 118, label %sw.bb122
-    i32 119, label %sw.bb123
-    i32 120, label %sw.bb124
-    i32 121, label %sw.bb125
-    i32 122, label %sw.bb126
-    i32 123, label %sw.bb127
-    i32 124, label %sw.bb128
-    i32 125, label %sw.bb129
-    i32 126, label %sw.bb130
-    i32 127, label %sw.bb131
-    i32 128, label %sw.bb132
-    i32 129, label %sw.bb133
-    i32 130, label %sw.bb134
-    i32 131, label %sw.bb135
-    i32 132, label %sw.bb136
-    i32 133, label %sw.bb137
-    i32 134, label %sw.bb138
-    i32 135, label %sw.bb139
-    i32 136, label %sw.bb140
-    i32 137, label %sw.bb141
-    i32 138, label %sw.bb142
-    i32 139, label %sw.bb143
-    i32 140, label %sw.bb144
-    i32 141, label %sw.bb145
-    i32 142, label %sw.bb146
-    i32 143, label %sw.bb147
-    i32 144, label %sw.bb148
-    i32 145, label %sw.bb149
-    i32 146, label %sw.bb150
-    i32 147, label %sw.bb151
-    i32 148, label %sw.bb152
-    i32 149, label %sw.bb153
-    i32 150, label %sw.bb154
-    i32 151, label %sw.bb155
-    i32 152, label %sw.bb156
-    i32 153, label %sw.bb157
-    i32 154, label %sw.bb158
-    i32 155, label %sw.bb159
-    i32 156, label %sw.bb160
-    i32 157, label %sw.bb161
-    i32 158, label %sw.bb162
-    i32 159, label %sw.bb163
-    i32 160, label %sw.bb164
-    i32 161, label %sw.bb165
-    i32 162, label %sw.bb166
-    i32 163, label %sw.bb167
-    i32 164, label %sw.bb168
-    i32 165, label %sw.bb169
-    i32 166, label %sw.bb170
-    i32 167, label %sw.bb171
-    i32 168, label %sw.bb172
-    i32 169, label %sw.bb173
-    i32 170, label %sw.bb174
-    i32 171, label %sw.bb175
-    i32 172, label %sw.bb176
-    i32 173, label %sw.bb177
-    i32 174, label %sw.bb178
-    i32 175, label %sw.bb179
-    i32 176, label %sw.bb180
-    i32 177, label %sw.bb181
-    i32 178, label %sw.bb182
-    i32 179, label %sw.bb183
-    i32 180, label %sw.bb184
-    i32 181, label %sw.bb185
-    i32 182, label %sw.bb186
-    i32 183, label %sw.bb187
-    i32 184, label %sw.bb188
-    i32 185, label %sw.bb189
-    i32 186, label %sw.bb190
-    i32 187, label %sw.bb191
-    i32 188, label %sw.bb192
-    i32 189, label %sw.bb193
-    i32 190, label %sw.bb194
-    i32 191, label %sw.bb195
-    i32 192, label %sw.bb196
-    i32 193, label %sw.bb197
-    i32 194, label %sw.bb198
-    i32 195, label %sw.bb199
-    i32 196, label %sw.bb200
-    i32 197, label %sw.bb201
-    i32 198, label %sw.bb202
+  i32 199, label %sw.bb203
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
+  i32 4, label %sw.bb4
+  i32 5, label %sw.bb5
+  i32 6, label %sw.bb6
+  i32 7, label %sw.bb7
+  i32 8, label %sw.bb8
+  i32 9, label %sw.bb9
+  i32 10, label %sw.bb10
+  i32 11, label %sw.bb11
+  i32 12, label %sw.bb12
+  i32 13, label %sw.bb13
+  i32 14, label %sw.bb14
+  i32 15, label %sw.bb15
+  i32 16, label %sw.bb16
+  i32 17, label %sw.bb17
+  i32 18, label %sw.bb18
+  i32 19, label %sw.bb19
+  i32 20, label %sw.bb20
+  i32 21, label %sw.bb21
+  i32 22, label %sw.bb22
+  i32 23, label %sw.bb23
+  i32 24, label %sw.bb24
+  i32 25, label %sw.bb25
+  i32 26, label %sw.bb26
+  i32 27, label %sw.bb27
+  i32 28, label %sw.bb28
+  i32 29, label %sw.bb29
+  i32 30, label %sw.bb30
+  i32 31, label %sw.bb31
+  i32 32, label %sw.bb32
+  i32 33, label %sw.bb33
+  i32 34, label %sw.bb34
+  i32 35, label %sw.bb35
+  i32 36, label %sw.bb37
+  i32 37, label %sw.bb38
+  i32 38, label %sw.bb39
+  i32 39, label %sw.bb40
+  i32 40, label %sw.bb41
+  i32 41, label %sw.bb42
+  i32 42, label %sw.bb43
+  i32 43, label %sw.bb44
+  i32 44, label %sw.bb45
+  i32 45, label %sw.bb47
+  i32 46, label %sw.bb48
+  i32 47, label %sw.bb49
+  i32 48, label %sw.bb50
+  i32 49, label %sw.bb51
+  i32 50, label %sw.bb52
+  i32 51, label %sw.bb53
+  i32 52, label %sw.bb54
+  i32 53, label %sw.bb55
+  i32 54, label %sw.bb56
+  i32 55, label %sw.bb58
+  i32 56, label %sw.bb59
+  i32 57, label %sw.bb60
+  i32 58, label %sw.bb61
+  i32 59, label %sw.bb62
+  i32 60, label %sw.bb63
+  i32 61, label %sw.bb64
+  i32 62, label %sw.bb65
+  i32 63, label %sw.bb66
+  i32 64, label %sw.bb67
+  i32 65, label %sw.bb68
+  i32 66, label %sw.bb69
+  i32 67, label %sw.bb70
+  i32 68, label %sw.bb71
+  i32 69, label %sw.bb72
+  i32 70, label %sw.bb73
+  i32 71, label %sw.bb74
+  i32 72, label %sw.bb76
+  i32 73, label %sw.bb77
+  i32 74, label %sw.bb78
+  i32 75, label %sw.bb79
+  i32 76, label %sw.bb80
+  i32 77, label %sw.bb81
+  i32 78, label %sw.bb82
+  i32 79, label %sw.bb83
+  i32 80, label %sw.bb84
+  i32 81, label %sw.bb85
+  i32 82, label %sw.bb86
+  i32 83, label %sw.bb87
+  i32 84, label %sw.bb88
+  i32 85, label %sw.bb89
+  i32 86, label %sw.bb90
+  i32 87, label %sw.bb91
+  i32 88, label %sw.bb92
+  i32 89, label %sw.bb93
+  i32 90, label %sw.bb94
+  i32 91, label %sw.bb95
+  i32 92, label %sw.bb96
+  i32 93, label %sw.bb97
+  i32 94, label %sw.bb98
+  i32 95, label %sw.bb99
+  i32 96, label %sw.bb100
+  i32 97, label %sw.bb101
+  i32 98, label %sw.bb102
+  i32 99, label %sw.bb103
+  i32 100, label %sw.bb104
+  i32 101, label %sw.bb105
+  i32 102, label %sw.bb106
+  i32 103, label %sw.bb107
+  i32 104, label %sw.bb108
+  i32 105, label %sw.bb109
+  i32 106, label %sw.bb110
+  i32 107, label %sw.bb111
+  i32 108, label %sw.bb112
+  i32 109, label %sw.bb113
+  i32 110, label %sw.bb114
+  i32 111, label %sw.bb115
+  i32 112, label %sw.bb116
+  i32 113, label %sw.bb117
+  i32 114, label %sw.bb118
+  i32 115, label %sw.bb119
+  i32 116, label %sw.bb120
+  i32 117, label %sw.bb121
+  i32 118, label %sw.bb122
+  i32 119, label %sw.bb123
+  i32 120, label %sw.bb124
+  i32 121, label %sw.bb125
+  i32 122, label %sw.bb126
+  i32 123, label %sw.bb127
+  i32 124, label %sw.bb128
+  i32 125, label %sw.bb129
+  i32 126, label %sw.bb130
+  i32 127, label %sw.bb131
+  i32 128, label %sw.bb132
+  i32 129, label %sw.bb133
+  i32 130, label %sw.bb134
+  i32 131, label %sw.bb135
+  i32 132, label %sw.bb136
+  i32 133, label %sw.bb137
+  i32 134, label %sw.bb138
+  i32 135, label %sw.bb139
+  i32 136, label %sw.bb140
+  i32 137, label %sw.bb141
+  i32 138, label %sw.bb142
+  i32 139, label %sw.bb143
+  i32 140, label %sw.bb144
+  i32 141, label %sw.bb145
+  i32 142, label %sw.bb146
+  i32 143, label %sw.bb147
+  i32 144, label %sw.bb148
+  i32 145, label %sw.bb149
+  i32 146, label %sw.bb150
+  i32 147, label %sw.bb151
+  i32 148, label %sw.bb152
+  i32 149, label %sw.bb153
+  i32 150, label %sw.bb154
+  i32 151, label %sw.bb155
+  i32 152, label %sw.bb156
+  i32 153, label %sw.bb157
+  i32 154, label %sw.bb158
+  i32 155, label %sw.bb159
+  i32 156, label %sw.bb160
+  i32 157, label %sw.bb161
+  i32 158, label %sw.bb162
+  i32 159, label %sw.bb163
+  i32 160, label %sw.bb164
+  i32 161, label %sw.bb165
+  i32 162, label %sw.bb166
+  i32 163, label %sw.bb167
+  i32 164, label %sw.bb168
+  i32 165, label %sw.bb169
+  i32 166, label %sw.bb170
+  i32 167, label %sw.bb171
+  i32 168, label %sw.bb172
+  i32 169, label %sw.bb173
+  i32 170, label %sw.bb174
+  i32 171, label %sw.bb175
+  i32 172, label %sw.bb176
+  i32 173, label %sw.bb177
+  i32 174, label %sw.bb178
+  i32 175, label %sw.bb179
+  i32 176, label %sw.bb180
+  i32 177, label %sw.bb181
+  i32 178, label %sw.bb182
+  i32 179, label %sw.bb183
+  i32 180, label %sw.bb184
+  i32 181, label %sw.bb185
+  i32 182, label %sw.bb186
+  i32 183, label %sw.bb187
+  i32 184, label %sw.bb188
+  i32 185, label %sw.bb189
+  i32 186, label %sw.bb190
+  i32 187, label %sw.bb191
+  i32 188, label %sw.bb192
+  i32 189, label %sw.bb193
+  i32 190, label %sw.bb194
+  i32 191, label %sw.bb195
+  i32 192, label %sw.bb196
+  i32 193, label %sw.bb197
+  i32 194, label %sw.bb198
+  i32 195, label %sw.bb199
+  i32 196, label %sw.bb200
+  i32 197, label %sw.bb201
+  i32 198, label %sw.bb202
   ]
 
 sw.bb1: br label %return
@@ -755,15 +807,27 @@
 }
 
 define i32 @cprop(i32 %x, i32 %y) {
+; CHECK-LABEL: @cprop(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[X:%.*]], 1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 7
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [7 x i32], [7 x i32]* @switch.table.cprop, i32 0, i32 [[SWITCH_TABLEIDX]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i32 123
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 1, label %return
-    i32 2, label %sw.bb1
-    i32 3, label %sw.bb2
-    i32 4, label %sw.bb2
-    i32 5, label %sw.bb2
-    i32 6, label %sw.bb3
-    i32 7, label %sw.bb3
+  i32 1, label %return
+  i32 2, label %sw.bb1
+  i32 3, label %sw.bb2
+  i32 4, label %sw.bb2
+  i32 5, label %sw.bb2
+  i32 6, label %sw.bb3
+  i32 7, label %sw.bb3
   ]
 
 sw.bb1: br label %return
@@ -790,23 +854,31 @@
   %retval.0 = phi i32 [ 123, %sw.default ], [ %select, %sw.bb3 ], [ %sub, %sw.bb2 ], [ 42, %sw.bb1 ], [ 5, %entry ]
   ret i32 %retval.0
 
-; CHECK-LABEL: @cprop(
-; CHECK: switch.lookup:
-; CHECK: %switch.gep = getelementptr inbounds [7 x i32], [7 x i32]* @switch.table.cprop, i32 0, i32 %switch.tableidx
 }
 
 define i32 @unreachable_case(i32 %x)  {
+; CHECK-LABEL: @unreachable_case(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 9
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [9 x i32], [9 x i32]* @switch.table.unreachable_case, i32 0, i32 [[X]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i32 2
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.bb
-    i32 1, label %sw.bb
-    i32 2, label %sw.bb
-    i32 3, label %sw.bb1
-    i32 4, label %sw.bb2
-    i32 5, label %sw.bb3
-    i32 6, label %sw.bb3
-    i32 7, label %sw.bb3
-    i32 8, label %sw.bb3
+  i32 0, label %sw.bb
+  i32 1, label %sw.bb
+  i32 2, label %sw.bb
+  i32 3, label %sw.bb1
+  i32 4, label %sw.bb2
+  i32 5, label %sw.bb3
+  i32 6, label %sw.bb3
+  i32 7, label %sw.bb3
+  i32 8, label %sw.bb3
   ]
 
 sw.bb: br label %return
@@ -819,18 +891,21 @@
   %retval.0 = phi i32 [ 1, %sw.bb3 ], [ -1, %sw.bb2 ], [ 0, %sw.bb ], [ 2, %sw.default ]
   ret i32 %retval.0
 
-; CHECK-LABEL: @unreachable_case(
-; CHECK: switch.lookup:
-; CHECK: getelementptr inbounds [9 x i32], [9 x i32]* @switch.table.unreachable_case, i32 0, i32 %x
 }
 
 define i32 @unreachable_default(i32 %x)  {
+; CHECK-LABEL: @unreachable_default(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* @switch.table.unreachable_default, i32 0, i32 [[X:%.*]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+;
 entry:
   switch i32 %x, label %default [
-    i32 0, label %bb0
-    i32 1, label %bb1
-    i32 2, label %bb2
-    i32 3, label %bb3
+  i32 0, label %bb0
+  i32 1, label %bb1
+  i32 2, label %bb2
+  i32 3, label %bb3
   ]
 
 bb0: br label %return
@@ -843,24 +918,40 @@
   %retval = phi i32 [ 42, %bb0 ], [ 52, %bb1 ], [ 1, %bb2 ], [ 2, %bb3 ]
   ret i32 %retval
 
-; CHECK-LABEL: @unreachable_default(
-; CHECK: entry:
-; CHECK-NOT: icmp
-; CHECK-NOT: br 1i
-; CHECK-NEXT: %switch.gep = getelementptr inbounds [4 x i32], [4 x i32]* @switch.table.unreachable_default, i32 0, i32 %x
-; CHECK-NEXT: %switch.load = load i32, i32* %switch.gep
-; CHECK-NEXT: ret i32 %switch.load
 }
 
 ; Don't create a table with illegal type
 define i96 @illegaltype(i32 %c) {
+; CHECK-LABEL: @illegaltype(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[C:%.*]], label [[SW_DEFAULT:%.*]] [
+; CHECK-NEXT:    i32 42, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 43, label [[SW_BB1:%.*]]
+; CHECK-NEXT:    i32 44, label [[SW_BB2:%.*]]
+; CHECK-NEXT:    i32 45, label [[SW_BB3:%.*]]
+; CHECK-NEXT:    i32 46, label [[SW_BB4:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       sw.bb1:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb2:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb3:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb4:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = phi i96 [ 15, [[SW_DEFAULT]] ], [ 27, [[SW_BB4]] ], [ -1, [[SW_BB3]] ], [ 0, [[SW_BB2]] ], [ 123, [[SW_BB1]] ], [ 55, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    ret i96 [[RETVAL_0]]
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 42, label %return
-    i32 43, label %sw.bb1
-    i32 44, label %sw.bb2
-    i32 45, label %sw.bb3
-    i32 46, label %sw.bb4
+  i32 42, label %return
+  i32 43, label %sw.bb1
+  i32 44, label %sw.bb2
+  i32 45, label %sw.bb3
+  i32 46, label %sw.bb4
   ]
 
 sw.bb1: br label %return
@@ -872,75 +963,106 @@
   %retval.0 = phi i96 [ 15, %sw.default ], [ 27, %sw.bb4 ], [ -1, %sw.bb3 ], [ 0, %sw.bb2 ], [ 123, %sw.bb1 ], [ 55, %entry ]
   ret i96 %retval.0
 
-; CHECK-LABEL: @illegaltype(
-; CHECK-NOT: @switch.table
-; CHECK: switch i32 %c
 }
 
 ; If we can build a lookup table without any holes, we don't need a default result.
 declare void @exit(i32)
 define i32 @nodefaultnoholes(i32 %c) {
+; CHECK-LABEL: @nodefaultnoholes(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[C:%.*]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[SW_DEFAULT:%.*]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    call void @exit(i32 1)
+; CHECK-NEXT:    unreachable
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [4 x i32], [4 x i32]* @switch.table.nodefaultnoholes, i32 0, i32 [[C]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 0, label %return
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %return
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 
 sw.bb1: br label %return
 sw.bb2: br label %return
 sw.bb3: br label %return
 sw.default: call void @exit(i32 1)
-            unreachable
+  unreachable
 return:
   %x = phi i32 [ -1, %sw.bb3 ], [ 0, %sw.bb2 ], [ 123, %sw.bb1 ], [ 55, %entry ]
   ret i32 %x
 
-; CHECK-LABEL: @nodefaultnoholes(
-; CHECK: @switch.table
-; CHECK-NOT: switch i32
 }
 
 ; This lookup table will have holes, so we need to test for the holes.
 define i32 @nodefaultwithholes(i32 %c) {
+; CHECK-LABEL: @nodefaultwithholes(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[C:%.*]], 6
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_HOLE_CHECK:%.*]], label [[SW_DEFAULT:%.*]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    call void @exit(i32 1)
+; CHECK-NEXT:    unreachable
+; CHECK:       switch.hole_check:
+; CHECK-NEXT:    [[SWITCH_MASKINDEX:%.*]] = trunc i32 [[C]] to i8
+; CHECK-NEXT:    [[SWITCH_SHIFTED:%.*]] = lshr i8 47, [[SWITCH_MASKINDEX]]
+; CHECK-NEXT:    [[SWITCH_LOBIT:%.*]] = trunc i8 [[SWITCH_SHIFTED]] to i1
+; CHECK-NEXT:    br i1 [[SWITCH_LOBIT]], label [[SWITCH_LOOKUP:%.*]], label [[SW_DEFAULT]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [6 x i32], [6 x i32]* @switch.table.nodefaultwithholes, i32 0, i32 [[C]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 0, label %return
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
-    i32 5, label %sw.bb3
+  i32 0, label %return
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
+  i32 5, label %sw.bb3
   ]
 
 sw.bb1: br label %return
 sw.bb2: br label %return
 sw.bb3: br label %return
 sw.default: call void @exit(i32 1)
-            unreachable
+  unreachable
 return:
   %x = phi i32 [ -1, %sw.bb3 ], [ 0, %sw.bb2 ], [ 123, %sw.bb1 ], [ 55, %entry ]
   ret i32 %x
 
-; CHECK-LABEL: @nodefaultwithholes(
-; CHECK: entry:
-; CHECK: br i1 %{{.*}}, label %switch.hole_check, label %sw.default
-; CHECK: switch.hole_check:
-; CHECK-NEXT: %switch.maskindex = trunc i32 %c to i8
-; CHECK-NEXT: %switch.shifted = lshr i8 47, %switch.maskindex
 ; The mask is binary 101111.
-; CHECK-NEXT: %switch.lobit = trunc i8 %switch.shifted to i1
-; CHECK-NEXT: br i1 %switch.lobit, label %switch.lookup, label %sw.default
-; CHECK-NOT: switch i32
 }
 
 ; We don't build lookup tables with holes for switches with less than four cases.
 define i32 @threecasesholes(i32 %c) {
+; CHECK-LABEL: @threecasesholes(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[C:%.*]], label [[SW_DEFAULT:%.*]] [
+; CHECK-NEXT:    i32 0, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 1, label [[SW_BB1:%.*]]
+; CHECK-NEXT:    i32 3, label [[SW_BB2:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       sw.bb1:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb2:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[X:%.*]] = phi i32 [ [[C]], [[SW_DEFAULT]] ], [ 5, [[SW_BB2]] ], [ 7, [[SW_BB1]] ], [ 9, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    ret i32 [[X]]
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 0, label %return
-    i32 1, label %sw.bb1
-    i32 3, label %sw.bb2
+  i32 0, label %return
+  i32 1, label %sw.bb1
+  i32 3, label %sw.bb2
   ]
 sw.bb1: br label %return
 sw.bb2: br label %return
@@ -948,19 +1070,16 @@
 return:
   %x = phi i32 [ %c, %sw.default ], [ 5, %sw.bb2 ], [ 7, %sw.bb1 ], [ 9, %entry ]
   ret i32 %x
-; CHECK-LABEL: @threecasesholes(
-; CHECK: switch i32
-; CHECK-NOT: @switch.table
 }
 
 ; We build lookup tables for switches with three or more cases.
 define i32 @threecases(i32 %c) {
 ; CHECK-LABEL: @threecases(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 %c, 3
-; CHECK-NEXT:    br i1 [[TMP0]], label %switch.lookup, label %return
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[C:%.*]], 3
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
 ; CHECK:       switch.lookup:
-; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* @switch.table.threecases, i32 0, i32 %c
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* @switch.table.threecases, i32 0, i32 [[C]]
 ; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
 ; CHECK-NEXT:    ret i32 [[SWITCH_LOAD]]
 ; CHECK:       return:
@@ -987,9 +1106,9 @@
 define i32 @twocases(i32 %c) {
 ; CHECK-LABEL: @twocases(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[SWITCH_SELECTCMP:%.*]] = icmp eq i32 %c, 1
-; CHECK-NEXT:    [[SWITCH_SELECT:%.*]] = select i1 [[SWITCH_SELECTCMP:%.*]], i32 7, i32 3
-; CHECK-NEXT:    [[SWITCH_SELECTCMP1:%.*]] = icmp eq i32 %c, 0
+; CHECK-NEXT:    [[SWITCH_SELECTCMP:%.*]] = icmp eq i32 [[C:%.*]], 1
+; CHECK-NEXT:    [[SWITCH_SELECT:%.*]] = select i1 [[SWITCH_SELECTCMP]], i32 7, i32 3
+; CHECK-NEXT:    [[SWITCH_SELECTCMP1:%.*]] = icmp eq i32 [[C]], 0
 ; CHECK-NEXT:    [[SWITCH_SELECT2:%.*]] = select i1 [[SWITCH_SELECTCMP1]], i32 9, i32 [[SWITCH_SELECT]]
 ; CHECK-NEXT:    ret i32 [[SWITCH_SELECT2]]
 ;
@@ -1013,11 +1132,28 @@
 @tls_c = thread_local global i32 0
 @tls_d = thread_local global i32 0
 define i32* @tls(i32 %x) {
+; CHECK-LABEL: @tls(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[X:%.*]], label [[SW_DEFAULT:%.*]] [
+; CHECK-NEXT:    i32 0, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 1, label [[SW_BB1:%.*]]
+; CHECK-NEXT:    i32 2, label [[SW_BB2:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       sw.bb1:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb2:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = phi i32* [ @tls_d, [[SW_DEFAULT]] ], [ @tls_c, [[SW_BB2]] ], [ @tls_b, [[SW_BB1]] ], [ @tls_a, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    ret i32* [[RETVAL_0]]
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %return
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
+  i32 0, label %return
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
   ]
 sw.bb1:
   br label %return
@@ -1028,9 +1164,6 @@
 return:
   %retval.0 = phi i32* [ @tls_d, %sw.default ], [ @tls_c, %sw.bb2 ], [ @tls_b, %sw.bb1 ], [ @tls_a, %entry ]
   ret i32* %retval.0
-; CHECK-LABEL: @tls(
-; CHECK: switch i32
-; CHECK-NOT: @switch.table
 }
 
 ; Don't build tables for switches with dllimport variables.
@@ -1039,11 +1172,28 @@
 @dllimport_c = external dllimport global [3x i32]
 @dllimport_d = external dllimport global [3x i32]
 define i32* @dllimport(i32 %x) {
+; CHECK-LABEL: @dllimport(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[X:%.*]], label [[SW_DEFAULT:%.*]] [
+; CHECK-NEXT:    i32 0, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 1, label [[SW_BB1:%.*]]
+; CHECK-NEXT:    i32 2, label [[SW_BB2:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       sw.bb1:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.bb2:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       sw.default:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = phi i32* [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_d, i32 0, i32 0), [[SW_DEFAULT]] ], [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_c, i32 0, i32 0), [[SW_BB2]] ], [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_b, i32 0, i32 0), [[SW_BB1]] ], [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_a, i32 0, i32 0), [[ENTRY:%.*]] ]
+; CHECK-NEXT:    ret i32* [[RETVAL_0]]
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %return
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
+  i32 0, label %return
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
   ]
 sw.bb1:
   br label %return
@@ -1053,23 +1203,33 @@
   br label %return
 return:
   %retval.0 = phi i32* [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_d, i32 0, i32 0), %sw.default ],
-                       [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_c, i32 0, i32 0), %sw.bb2 ],
-                       [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_b, i32 0, i32 0), %sw.bb1 ],
-                       [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_a, i32 0, i32 0), %entry ]
+  [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_c, i32 0, i32 0), %sw.bb2 ],
+  [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_b, i32 0, i32 0), %sw.bb1 ],
+  [ getelementptr inbounds ([3 x i32], [3 x i32]* @dllimport_a, i32 0, i32 0), %entry ]
   ret i32* %retval.0
-; CHECK-LABEL: @dllimport(
-; CHECK: switch i32
-; CHECK-NOT: @switch.table
 }
 
 ; We can use linear mapping.
 define i8 @linearmap1(i32 %c) {
+; CHECK-LABEL: @linearmap1(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[C:%.*]], 10
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_IDX_CAST:%.*]] = trunc i32 [[SWITCH_TABLEIDX]] to i8
+; CHECK-NEXT:    [[SWITCH_IDX_MULT:%.*]] = mul i8 [[SWITCH_IDX_CAST]], -5
+; CHECK-NEXT:    [[SWITCH_OFFSET:%.*]] = add i8 [[SWITCH_IDX_MULT]], 18
+; CHECK-NEXT:    ret i8 [[SWITCH_OFFSET]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i8 3
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 10, label %return
-    i32 11, label %sw.bb1
-    i32 12, label %sw.bb2
-    i32 13, label %sw.bb3
+  i32 10, label %return
+  i32 11, label %sw.bb1
+  i32 12, label %sw.bb2
+  i32 13, label %sw.bb3
   ]
 sw.bb1: br label %return
 sw.bb2: br label %return
@@ -1078,24 +1238,28 @@
 return:
   %x = phi i8 [ 3, %sw.default ], [ 3, %sw.bb3 ], [ 8, %sw.bb2 ], [ 13, %sw.bb1 ], [ 18, %entry ]
   ret i8 %x
-; CHECK-LABEL: @linearmap1(
-; CHECK: entry:
-; CHECK-NEXT: %switch.tableidx = sub i32 %c, 10
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.idx.cast = trunc i32 %switch.tableidx to i8
-; CHECK-NEXT: %switch.idx.mult = mul i8 %switch.idx.cast, -5
-; CHECK-NEXT: %switch.offset = add i8 %switch.idx.mult, 18
-; CHECK-NEXT: ret i8 %switch.offset
 }
 
 ; Linear mapping in a different configuration.
 define i32 @linearmap2(i8 %c) {
+; CHECK-LABEL: @linearmap2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i8 [[C:%.*]], -13
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i8 [[SWITCH_TABLEIDX]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_IDX_CAST:%.*]] = zext i8 [[SWITCH_TABLEIDX]] to i32
+; CHECK-NEXT:    [[SWITCH_OFFSET:%.*]] = add i32 [[SWITCH_IDX_CAST]], 18
+; CHECK-NEXT:    ret i32 [[SWITCH_OFFSET]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i32 3
+;
 entry:
   switch i8 %c, label %sw.default [
-    i8 -10, label %return
-    i8 -11, label %sw.bb1
-    i8 -12, label %sw.bb2
-    i8 -13, label %sw.bb3
+  i8 -10, label %return
+  i8 -11, label %sw.bb1
+  i8 -12, label %sw.bb2
+  i8 -13, label %sw.bb3
   ]
 sw.bb1: br label %return
 sw.bb2: br label %return
@@ -1104,23 +1268,28 @@
 return:
   %x = phi i32 [ 3, %sw.default ], [ 18, %sw.bb3 ], [ 19, %sw.bb2 ], [ 20, %sw.bb1 ], [ 21, %entry ]
   ret i32 %x
-; CHECK-LABEL: @linearmap2(
-; CHECK: entry:
-; CHECK-NEXT: %switch.tableidx = sub i8 %c, -13
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.idx.cast = zext i8 %switch.tableidx to i32
-; CHECK-NEXT: %switch.offset = add i32 %switch.idx.cast, 18
-; CHECK-NEXT: ret i32 %switch.offset
 }
 
 ; Linear mapping with overflows.
 define i8 @linearmap3(i32 %c) {
+; CHECK-LABEL: @linearmap3(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[C:%.*]], 10
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_IDX_CAST:%.*]] = trunc i32 [[SWITCH_TABLEIDX]] to i8
+; CHECK-NEXT:    [[SWITCH_IDX_MULT:%.*]] = mul i8 [[SWITCH_IDX_CAST]], 100
+; CHECK-NEXT:    ret i8 [[SWITCH_IDX_MULT]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i8 3
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 10, label %return
-    i32 11, label %sw.bb1
-    i32 12, label %sw.bb2
-    i32 13, label %sw.bb3
+  i32 10, label %return
+  i32 11, label %sw.bb1
+  i32 12, label %sw.bb2
+  i32 13, label %sw.bb3
   ]
 sw.bb1: br label %return
 sw.bb2: br label %return
@@ -1129,23 +1298,27 @@
 return:
   %x = phi i8 [ 3, %sw.default ], [ 44, %sw.bb3 ], [ -56, %sw.bb2 ], [ 100, %sw.bb1 ], [ 0, %entry ]
   ret i8 %x
-; CHECK-LABEL: @linearmap3(
-; CHECK: entry:
-; CHECK-NEXT: %switch.tableidx = sub i32 %c, 10
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.idx.cast = trunc i32 %switch.tableidx to i8
-; CHECK-NEXT: %switch.idx.mult = mul i8 %switch.idx.cast, 100
-; CHECK-NEXT: ret i8 %switch.idx.mult
 }
 
 ; Linear mapping with with multiplier 1 and offset 0.
 define i8 @linearmap4(i32 %c) {
+; CHECK-LABEL: @linearmap4(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i32 [[C:%.*]], -2
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[SWITCH_TABLEIDX]], 4
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_IDX_CAST:%.*]] = trunc i32 [[SWITCH_TABLEIDX]] to i8
+; CHECK-NEXT:    ret i8 [[SWITCH_IDX_CAST]]
+; CHECK:       return:
+; CHECK-NEXT:    ret i8 3
+;
 entry:
   switch i32 %c, label %sw.default [
-    i32 -2, label %return
-    i32 -1, label %sw.bb1
-    i32 0, label %sw.bb2
-    i32 1, label %sw.bb3
+  i32 -2, label %return
+  i32 -1, label %sw.bb1
+  i32 0, label %sw.bb2
+  i32 1, label %sw.bb3
   ]
 sw.bb1: br label %return
 sw.bb2: br label %return
@@ -1154,22 +1327,26 @@
 return:
   %x = phi i8 [ 3, %sw.default ], [ 3, %sw.bb3 ], [ 2, %sw.bb2 ], [ 1, %sw.bb1 ], [ 0, %entry ]
   ret i8 %x
-; CHECK-LABEL: @linearmap4(
-; CHECK: entry:
-; CHECK-NEXT: %switch.tableidx = sub i32 %c, -2
-; CHECK: switch.lookup:
-; CHECK-NEXT: %switch.idx.cast = trunc i32 %switch.tableidx to i8
-; CHECK-NEXT: ret i8 %switch.idx.cast
 }
 
 ; Reuse the inverted table range compare.
 define i32 @reuse_cmp1(i32 %x) {
+; CHECK-LABEL: @reuse_cmp1(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    [[INVERTED_CMP:%.*]] = xor i1 [[TMP0]], true
+; CHECK-NEXT:    [[SWITCH_OFFSET:%.*]] = add i32 [[X]], 10
+; CHECK-NEXT:    [[R_0:%.*]] = select i1 [[TMP0]], i32 [[SWITCH_OFFSET]], i32 0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[R_0]], 0
+; CHECK-NEXT:    [[DOTR_0:%.*]] = select i1 [[INVERTED_CMP]], i32 100, i32 [[R_0]]
+; CHECK-NEXT:    ret i32 [[DOTR_0]]
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.bb
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %sw.bb
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 sw.bb: br label %sw.epilog
 sw.bb1: br label %sw.epilog
@@ -1185,22 +1362,24 @@
 return:
   %retval.0 = phi i32 [ 100, %if.then ], [ %r.0, %if.end ]
   ret i32 %retval.0
-; CHECK-LABEL: @reuse_cmp1(
-; CHECK: entry:
-; CHECK-NEXT: [[C:%.+]] = icmp ult i32 %x, 4
-; CHECK-NEXT: %inverted.cmp = xor i1 [[C]], true
-; CHECK:      [[R:%.+]] = select i1 %inverted.cmp, i32 100, i32 {{.*}}
-; CHECK-NEXT: ret i32 [[R]]
 }
 
 ; Reuse the table range compare.
 define i32 @reuse_cmp2(i32 %x) {
+; CHECK-LABEL: @reuse_cmp2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    [[X_:%.*]] = select i1 [[TMP0]], i32 [[X]], i32 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[X_]], 4
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = select i1 [[TMP0]], i32 [[X_]], i32 100
+; CHECK-NEXT:    ret i32 [[RETVAL_0]]
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.bb
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %sw.bb
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 sw.bb: br label %sw.epilog
 sw.bb1: br label %sw.epilog
@@ -1216,24 +1395,26 @@
 return:
   %retval.0 = phi i32 [ %r.0, %if.then ], [ 100, %if.end ]
   ret i32 %retval.0
-; CHECK-LABEL: @reuse_cmp2(
-; CHECK: entry:
-; CHECK-NEXT: %0 = icmp ult i32 %x, 4
-; CHECK-NEXT: %x. = select i1 %0, i32 %x, i32 4
-; CHECK-NEXT: [[C:%.+]] = icmp ne i32 %x., 4
-; CHECK:      [[R:%.+]] = select i1 %0, i32 {{.*}}, i32 100
-; CHECK-NEXT: ret i32 [[R]]
 }
 
 ; Cannot reuse the table range compare, because the default value is the same
 ; as one of the case values.
 define i32 @no_reuse_cmp(i32 %x) {
+; CHECK-LABEL: @no_reuse_cmp(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    [[SWITCH_OFFSET:%.*]] = add i32 [[X]], 10
+; CHECK-NEXT:    [[R_0:%.*]] = select i1 [[TMP0]], i32 [[SWITCH_OFFSET]], i32 12
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[R_0]], 0
+; CHECK-NEXT:    [[R_0_:%.*]] = select i1 [[CMP]], i32 [[R_0]], i32 100
+; CHECK-NEXT:    ret i32 [[R_0_]]
+;
 entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.bb
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %sw.bb
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 sw.bb: br label %sw.epilog
 sw.bb1: br label %sw.epilog
@@ -1249,25 +1430,35 @@
 return:
   %retval.0 = phi i32 [ %r.0, %if.then ], [ 100, %if.end ]
   ret i32 %retval.0
-; CHECK-LABEL: @no_reuse_cmp(
-; CHECK:  [[S:%.+]] = select
-; CHECK-NEXT:  %cmp = icmp ne i32 [[S]], 0
-; CHECK-NEXT:  [[R:%.+]] = select i1 %cmp, i32 [[S]], i32 100
-; CHECK-NEXT:  ret i32 [[R]]
 }
 
 ; Cannot reuse the table range compare, because the phi at the switch merge
 ; point is not dominated by the switch.
 define i32 @no_reuse_cmp2(i32 %x, i32 %y) {
+; CHECK-LABEL: @no_reuse_cmp2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EC:%.*]] = icmp ne i32 [[Y:%.*]], 0
+; CHECK-NEXT:    br i1 [[EC]], label [[SWITCH_ENTRY:%.*]], label [[SW_EPILOG:%.*]]
+; CHECK:       switch.entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[X:%.*]], 4
+; CHECK-NEXT:    [[SWITCH_OFFSET:%.*]] = add i32 [[X]], 10
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[TMP0]], i32 [[SWITCH_OFFSET]], i32 0
+; CHECK-NEXT:    br label [[SW_EPILOG]]
+; CHECK:       sw.epilog:
+; CHECK-NEXT:    [[R_0:%.*]] = phi i32 [ 100, [[ENTRY:%.*]] ], [ [[SPEC_SELECT]], [[SWITCH_ENTRY]] ]
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[R_0]], 0
+; CHECK-NEXT:    [[DOTR_0:%.*]] = select i1 [[CMP]], i32 100, i32 [[R_0]]
+; CHECK-NEXT:    ret i32 [[DOTR_0]]
+;
 entry:
   %ec = icmp ne i32 %y, 0
   br i1 %ec, label %switch.entry, label %sw.epilog
 switch.entry:
   switch i32 %x, label %sw.default [
-    i32 0, label %sw.bb
-    i32 1, label %sw.bb1
-    i32 2, label %sw.bb2
-    i32 3, label %sw.bb3
+  i32 0, label %sw.bb
+  i32 1, label %sw.bb1
+  i32 2, label %sw.bb2
+  i32 3, label %sw.bb3
   ]
 sw.bb: br label %sw.epilog
 sw.bb1: br label %sw.epilog
@@ -1283,28 +1474,49 @@
 return:
   %retval.0 = phi i32 [ 100, %if.then ], [ %r.0, %if.end ]
   ret i32 %retval.0
-; CHECK-LABEL: @no_reuse_cmp2(
-; CHECK:  %r.0 = phi
-; CHECK-NEXT:  %cmp = icmp eq i32 %r.0, 0
-; CHECK-NEXT:  [[R:%.+]] = select i1 %cmp
-; CHECK-NEXT:  ret i32 [[R]]
 }
 
 define void @pr20210(i8 %x, i1 %y) {
 ; %z has uses outside of its BB or the phi it feeds into,
 ; so doing a table lookup and jumping directly to while.cond would
 ; cause %z to cease dominating all its uses.
-
+; CHECK-LABEL: @pr20210(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[Y:%.*]], label [[SW:%.*]], label [[INTERMEDIATE:%.*]]
+; CHECK:       sw:
+; CHECK-NEXT:    switch i8 [[X:%.*]], label [[END:%.*]] [
+; CHECK-NEXT:    i8 7, label [[INTERMEDIATE]]
+; CHECK-NEXT:    i8 3, label [[INTERMEDIATE]]
+; CHECK-NEXT:    i8 2, label [[INTERMEDIATE]]
+; CHECK-NEXT:    i8 1, label [[INTERMEDIATE]]
+; CHECK-NEXT:    i8 0, label [[INTERMEDIATE]]
+; CHECK-NEXT:    ]
+; CHECK:       intermediate:
+; CHECK-NEXT:    [[Z:%.*]] = zext i8 [[X]] to i32
+; CHECK-NEXT:    br label [[WHILE_COND:%.*]]
+; CHECK:       while.cond:
+; CHECK-NEXT:    [[I:%.*]] = phi i32 [ [[Z]], [[INTERMEDIATE]] ], [ [[J:%.*]], [[WHILE_BODY:%.*]] ]
+; CHECK-NEXT:    [[B:%.*]] = icmp ne i32 [[I]], 7
+; CHECK-NEXT:    br i1 [[B]], label [[WHILE_BODY]], label [[WHILE_END:%.*]]
+; CHECK:       while.body:
+; CHECK-NEXT:    [[J]] = add i32 [[I]], 1
+; CHECK-NEXT:    br label [[WHILE_COND]]
+; CHECK:       while.end:
+; CHECK-NEXT:    call void @exit(i32 [[Z]])
+; CHECK-NEXT:    unreachable
+; CHECK:       end:
+; CHECK-NEXT:    ret void
+;
 entry:
   br i1 %y, label %sw, label %intermediate
 
 sw:
   switch i8 %x, label %end [
-    i8 7, label %intermediate
-    i8 3, label %intermediate
-    i8 2, label %intermediate
-    i8 1, label %intermediate
-    i8 0, label %intermediate
+  i8 7, label %intermediate
+  i8 3, label %intermediate
+  i8 2, label %intermediate
+  i8 1, label %intermediate
+  i8 0, label %intermediate
   ]
 
 intermediate:
@@ -1326,8 +1538,6 @@
 
 end:
   ret void
-; CHECK-LABEL: @pr20210
-; CHECK: switch i8 %x
 }
 
 ; Make sure we do not crash due to trying to generate an unguarded
@@ -1335,12 +1545,28 @@
 ; values) and simultaneously trying to generate a branch to deal with
 ; the fact that we have holes in the range.
 define i32 @covered_switch_with_bit_tests(i3) {
+; CHECK-LABEL: @covered_switch_with_bit_tests(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i3 [[TMP0:%.*]], -4
+; CHECK-NEXT:    [[SWITCH_MASKINDEX:%.*]] = zext i3 [[SWITCH_TABLEIDX]] to i8
+; CHECK-NEXT:    [[SWITCH_SHIFTED:%.*]] = lshr i8 -61, [[SWITCH_MASKINDEX]]
+; CHECK-NEXT:    [[SWITCH_LOBIT:%.*]] = trunc i8 [[SWITCH_SHIFTED]] to i1
+; CHECK-NEXT:    br i1 [[SWITCH_LOBIT]], label [[SWITCH_LOOKUP:%.*]], label [[L6:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX_ZEXT:%.*]] = zext i3 [[SWITCH_TABLEIDX]] to i4
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [8 x i32], [8 x i32]* @switch.table.covered_switch_with_bit_tests, i32 0, i4 [[SWITCH_TABLEIDX_ZEXT]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i32, i32* [[SWITCH_GEP]]
+; CHECK-NEXT:    br label [[L6]]
+; CHECK:       l6:
+; CHECK-NEXT:    [[R:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[SWITCH_LOAD]], [[SWITCH_LOOKUP]] ]
+; CHECK-NEXT:    ret i32 [[R]]
+;
 entry:
   switch i3 %0, label %l6 [
-    i3 -3, label %l5
-    i3 -4, label %l5
-    i3 3, label %l1
-    i3 2, label %l1
+  i3 -3, label %l5
+  i3 -4, label %l5
+  i3 3, label %l1
+  i3 2, label %l1
   ]
 
 l1: br label %l2
@@ -1354,9 +1580,6 @@
 l6:
   %r = phi i32 [ %x, %l2 ], [ 0, %entry ]
   ret i32 %r
-; CHECK-LABEL: @covered_switch_with_bit_tests
-; CHECK: entry
-; CHECK-NEXT: switch
 }
 
 ; Speculation depth must be limited to avoid a zero-cost instruction cycle.
@@ -1366,6 +1589,12 @@
 ; CHECK-NEXT:  br label %cleanup4
 
 define i32 @PR26308(i1 %B, i64 %load) {
+; CHECK-LABEL: @PR26308(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[CLEANUP4:%.*]]
+; CHECK:       cleanup4:
+; CHECK-NEXT:    br label [[CLEANUP4]]
+;
 entry:
   br label %while.body
 
@@ -1393,9 +1622,32 @@
 declare void @throw(i1)
 
 define void @wineh_test(i64 %val) personality i32 (...)* @__CxxFrameHandler3 {
+; CHECK-LABEL: @wineh_test(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    invoke void @throw(i1 false)
+; CHECK-NEXT:    to label [[UNREACHABLE:%.*]] unwind label [[CLEANUP1:%.*]]
+; CHECK:       unreachable:
+; CHECK-NEXT:    unreachable
+; CHECK:       cleanup1:
+; CHECK-NEXT:    [[CLEANUPPAD1:%.*]] = cleanuppad within none []
+; CHECK-NEXT:    switch i64 [[VAL:%.*]], label [[CLEANUPDONE2:%.*]] [
+; CHECK-NEXT:    i64 0, label [[CLEANUPDONE1:%.*]]
+; CHECK-NEXT:    i64 1, label [[CLEANUPDONE1]]
+; CHECK-NEXT:    i64 6, label [[CLEANUPDONE1]]
+; CHECK-NEXT:    ]
+; CHECK:       cleanupdone1:
+; CHECK-NEXT:    cleanupret from [[CLEANUPPAD1]] unwind label [[CLEANUP2:%.*]]
+; CHECK:       cleanupdone2:
+; CHECK-NEXT:    cleanupret from [[CLEANUPPAD1]] unwind label [[CLEANUP2]]
+; CHECK:       cleanup2:
+; CHECK-NEXT:    [[PHI:%.*]] = phi i1 [ true, [[CLEANUPDONE1]] ], [ false, [[CLEANUPDONE2]] ]
+; CHECK-NEXT:    [[CLEANUPPAD2:%.*]] = cleanuppad within none []
+; CHECK-NEXT:    call void @throw(i1 [[PHI]]) [ "funclet"(token [[CLEANUPPAD2]]) ]
+; CHECK-NEXT:    unreachable
+;
 entry:
   invoke void @throw(i1 false)
-          to label %unreachable unwind label %cleanup1
+  to label %unreachable unwind label %cleanup1
 
 unreachable:
   unreachable
@@ -1403,9 +1655,9 @@
 cleanup1:
   %cleanuppad1 = cleanuppad within none []
   switch i64 %val, label %cleanupdone2 [
-    i64 0, label %cleanupdone1
-    i64 1, label %cleanupdone1
-    i64 6, label %cleanupdone1
+  i64 0, label %cleanupdone1
+  i64 1, label %cleanupdone1
+  i64 6, label %cleanupdone1
   ]
 
 cleanupdone1:
Index: test/Transforms/SimplifyCFG/switch-dead-default.ll
===================================================================
--- test/Transforms/SimplifyCFG/switch-dead-default.ll
+++ test/Transforms/SimplifyCFG/switch-dead-default.ll
@@ -1,11 +1,20 @@
-; RUN: opt %s -S -simplifycfg | FileCheck %s
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt %s -S -simplifycfg -O3 | FileCheck %s
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 declare void @foo(i32)
 
 define void @test(i1 %a) {
-; CHECK-LABEL: @test
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
+; CHECK-LABEL: @test(
+; CHECK-NEXT:    br i1 [[A:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
+; CHECK:       true:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       false:
+; CHECK-NEXT:    tail call void @foo(i32 3)
+; CHECK-NEXT:    ret void
+;
   switch i1 %a, label %default [i1 1, label %true
-                                i1 0, label %false]
+  i1 0, label %false]
 true:
   call void @foo(i32 1)
   ret void
@@ -15,14 +24,35 @@
 default:
   call void @foo(i32 2)
   ret void
-}  
+}
 
 define void @test2(i2 %a) {
-; CHECK-LABEL: @test2
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    switch i2 [[A:%.*]], label [[DEFAULT1:%.*]] [
+; CHECK-NEXT:    i2 0, label [[CASE0:%.*]]
+; CHECK-NEXT:    i2 1, label [[CASE1:%.*]]
+; CHECK-NEXT:    i2 -2, label [[CASE2:%.*]]
+; CHECK-NEXT:    i2 -1, label [[CASE3:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       case0:
+; CHECK-NEXT:    tail call void @foo(i32 0)
+; CHECK-NEXT:    ret void
+; CHECK:       case1:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       case2:
+; CHECK-NEXT:    tail call void @foo(i32 2)
+; CHECK-NEXT:    ret void
+; CHECK:       case3:
+; CHECK-NEXT:    tail call void @foo(i32 3)
+; CHECK-NEXT:    ret void
+; CHECK:       default1:
+; CHECK-NEXT:    unreachable
+;
   switch i2 %a, label %default [i2 0, label %case0
-                                i2 1, label %case1
-                                i2 2, label %case2
-                                i2 3, label %case3]
+  i2 1, label %case1
+  i2 2, label %case2
+  i2 3, label %case3]
 case0:
   call void @foo(i32 0)
   ret void
@@ -36,19 +66,35 @@
   call void @foo(i32 3)
   ret void
 default:
-; CHECK-LABEL: default1:
-; CHECK-NEXT: unreachable
   call void @foo(i32 4)
   ret void
-}  
+}
 
 ; This one is a negative test - we know the value of the default,
 ; but that's about it
 define void @test3(i2 %a) {
-; CHECK-LABEL: @test3
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    switch i2 [[A:%.*]], label [[DEFAULT:%.*]] [
+; CHECK-NEXT:    i2 0, label [[CASE0:%.*]]
+; CHECK-NEXT:    i2 1, label [[CASE1:%.*]]
+; CHECK-NEXT:    i2 -2, label [[CASE2:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       case0:
+; CHECK-NEXT:    tail call void @foo(i32 0)
+; CHECK-NEXT:    ret void
+; CHECK:       case1:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       case2:
+; CHECK-NEXT:    tail call void @foo(i32 2)
+; CHECK-NEXT:    ret void
+; CHECK:       default:
+; CHECK-NEXT:    tail call void @foo(i32 0)
+; CHECK-NEXT:    ret void
+;
   switch i2 %a, label %default [i2 0, label %case0
-                                i2 1, label %case1
-                                i2 2, label %case2]
+  i2 1, label %case1
+  i2 2, label %case2]
 
 case0:
   call void @foo(i32 0)
@@ -60,18 +106,30 @@
   call void @foo(i32 2)
   ret void
 default:
-; CHECK-LABEL: default:
-; CHECK-NEXT: call void @foo
   call void @foo(i32 0)
   ret void
-}  
+}
 
 ; Negative test - check for possible overflow when computing
 ; number of possible cases.
 define void @test4(i128 %a) {
-; CHECK-LABEL: @test4
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:    switch i128 [[A:%.*]], label [[DEFAULT:%.*]] [
+; CHECK-NEXT:    i128 0, label [[CASE0:%.*]]
+; CHECK-NEXT:    i128 1, label [[CASE1:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       case0:
+; CHECK-NEXT:    tail call void @foo(i32 0)
+; CHECK-NEXT:    ret void
+; CHECK:       case1:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       default:
+; CHECK-NEXT:    tail call void @foo(i32 0)
+; CHECK-NEXT:    ret void
+;
   switch i128 %a, label %default [i128 0, label %case0
-                                  i128 1, label %case1]
+  i128 1, label %case1]
 
 case0:
   call void @foo(i32 0)
@@ -80,20 +138,28 @@
   call void @foo(i32 1)
   ret void
 default:
-; CHECK-LABEL: default:
-; CHECK-NEXT: call void @foo
   call void @foo(i32 0)
   ret void
-}  
+}
 
 ; All but one bit known zero
 define void @test5(i8 %a) {
-; CHECK-LABEL: @test5
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
-  %cmp = icmp ult i8 %a, 2 
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 2
+; CHECK-NEXT:    tail call void @llvm.assume(i1 [[CMP]])
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp eq i8 [[A]], 1
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[TRUE:%.*]], label [[FALSE:%.*]]
+; CHECK:       true:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       false:
+; CHECK-NEXT:    tail call void @foo(i32 3)
+; CHECK-NEXT:    ret void
+;
+  %cmp = icmp ult i8 %a, 2
   call void @llvm.assume(i1 %cmp)
   switch i8 %a, label %default [i8 1, label %true
-                                i8 0, label %false]
+  i8 0, label %false]
 true:
   call void @foo(i32 1)
   ret void
@@ -103,18 +169,27 @@
 default:
   call void @foo(i32 2)
   ret void
-} 
+}
 
 ;; All but one bit known one
 define void @test6(i8 %a) {
-; CHECK-LABEL: @test6
-; CHECK: @llvm.assume
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
+; CHECK-LABEL: @test6(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i8 [[A:%.*]], -3
+; CHECK-NEXT:    tail call void @llvm.assume(i1 [[CMP]])
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp eq i8 [[A]], -1
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[TRUE:%.*]], label [[FALSE:%.*]]
+; CHECK:       true:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       false:
+; CHECK-NEXT:    tail call void @foo(i32 3)
+; CHECK-NEXT:    ret void
+;
   %and = and i8 %a, 254
-  %cmp = icmp eq i8 %and, 254 
+  %cmp = icmp eq i8 %and, 254
   call void @llvm.assume(i1 %cmp)
   switch i8 %a, label %default [i8 255, label %true
-                                i8 254, label %false]
+  i8 254, label %false]
 true:
   call void @foo(i32 1)
   ret void
@@ -129,15 +204,24 @@
 ; Check that we can eliminate both dead cases and dead defaults
 ; within a single run of simplify-cfg
 define void @test7(i8 %a) {
-; CHECK-LABEL: @test7
-; CHECK: @llvm.assume
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
+; CHECK-LABEL: @test7(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i8 [[A:%.*]], -3
+; CHECK-NEXT:    tail call void @llvm.assume(i1 [[CMP]])
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp eq i8 [[A]], -1
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[TRUE:%.*]], label [[FALSE:%.*]]
+; CHECK:       true:
+; CHECK-NEXT:    tail call void @foo(i32 1)
+; CHECK-NEXT:    ret void
+; CHECK:       false:
+; CHECK-NEXT:    tail call void @foo(i32 3)
+; CHECK-NEXT:    ret void
+;
   %and = and i8 %a, 254
-  %cmp = icmp eq i8 %and, 254 
+  %cmp = icmp eq i8 %and, 254
   call void @llvm.assume(i1 %cmp)
   switch i8 %a, label %default [i8 255, label %true
-                                i8 254, label %false
-                                i8 0, label %also_dead]
+  i8 254, label %false
+  i8 0, label %also_dead]
 true:
   call void @foo(i32 1)
   ret void
@@ -154,17 +238,18 @@
 
 ;; All but one bit known undef
 ;; Note: This is currently testing an optimization which doesn't trigger. The
-;; case this is protecting against is that a bit could be assumed both zero 
+;; case this is protecting against is that a bit could be assumed both zero
 ;; *or* one given we know it's undef.  ValueTracking doesn't do this today,
 ;; but it doesn't hurt to confirm.
 define void @test8(i8 %a) {
 ; CHECK-LABEL: @test8(
-; CHECK: switch i8
+; CHECK-NEXT:    unreachable
+;
   %and = and i8 %a, 254
   %cmp = icmp eq i8 %and, undef
   call void @llvm.assume(i1 %cmp)
   switch i8 %a, label %default [i8 255, label %true
-                                i8 254, label %false]
+  i8 254, label %false]
 true:
   call void @foo(i32 1)
   ret void
Index: test/Transforms/SimplifyCFG/switch-genfori8.ll
===================================================================
--- /dev/null
+++ test/Transforms/SimplifyCFG/switch-genfori8.ll
@@ -0,0 +1,149 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' < %s | FileCheck %s
+; Using a Zig driver https://gist.github.com/shawnl/8137f62f7dbcfd539f6cf1925387cd38
+;after-patch, covered lookup table: 509.8MiB/sec
+;lookup table, not covered, only valid digits to prime the branch predictor: 437.8MiB/sec
+;lookup table, not covered, random bytes: 242.0MiB/sec
+;before-patch, no lookup table: 205.4MiB/sec
+
+; ModuleID = 'chartodigit.c'
+source_filename = "chartodigit.c"
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+; Function Attrs: norecurse nounwind readnone uwtable
+define dso_local zeroext i8 @char_to_digit(i8 zeroext) local_unnamed_addr #0 {
+; CHECK-LABEL: @char_to_digit(
+; CHECK-NEXT:    switch i8 [[TMP0:%.*]], label [[TMP17:%.*]] [
+; CHECK-NEXT:    i8 48, label [[TMP18:%.*]]
+; CHECK-NEXT:    i8 49, label [[TMP2:%.*]]
+; CHECK-NEXT:    i8 50, label [[TMP3:%.*]]
+; CHECK-NEXT:    i8 51, label [[TMP4:%.*]]
+; CHECK-NEXT:    i8 52, label [[TMP5:%.*]]
+; CHECK-NEXT:    i8 53, label [[TMP6:%.*]]
+; CHECK-NEXT:    i8 54, label [[TMP7:%.*]]
+; CHECK-NEXT:    i8 55, label [[TMP8:%.*]]
+; CHECK-NEXT:    i8 56, label [[TMP9:%.*]]
+; CHECK-NEXT:    i8 57, label [[TMP10:%.*]]
+; CHECK-NEXT:    i8 97, label [[TMP11:%.*]]
+; CHECK-NEXT:    i8 98, label [[TMP12:%.*]]
+; CHECK-NEXT:    i8 99, label [[TMP13:%.*]]
+; CHECK-NEXT:    i8 100, label [[TMP14:%.*]]
+; CHECK-NEXT:    i8 101, label [[TMP15:%.*]]
+; CHECK-NEXT:    i8 102, label [[TMP16:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       2:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       3:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       4:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       5:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       6:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       7:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       8:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       9:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       10:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       11:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       12:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       13:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       14:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       15:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       16:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       17:
+; CHECK-NEXT:    br label [[TMP18]]
+; CHECK:       18:
+; CHECK-NEXT:    [[TMP19:%.*]] = phi i8 [ -1, [[TMP17]] ], [ 15, [[TMP16]] ], [ 14, [[TMP15]] ], [ 13, [[TMP14]] ], [ 12, [[TMP13]] ], [ 11, [[TMP12]] ], [ 10, [[TMP11]] ], [ 9, [[TMP10]] ], [ 8, [[TMP9]] ], [ 7, [[TMP8]] ], [ 6, [[TMP7]] ], [ 5, [[TMP6]] ], [ 4, [[TMP5]] ], [ 3, [[TMP4]] ], [ 2, [[TMP3]] ], [ 1, [[TMP2]] ], [ 0, [[TMP1:%.*]] ]
+; CHECK-NEXT:    ret i8 [[TMP19]]
+;
+  switch i8 %0, label %17 [
+  i8 48, label %18
+  i8 49, label %2
+  i8 50, label %3
+  i8 51, label %4
+  i8 52, label %5
+  i8 53, label %6
+  i8 54, label %7
+  i8 55, label %8
+  i8 56, label %9
+  i8 57, label %10
+  i8 97, label %11
+  i8 98, label %12
+  i8 99, label %13
+  i8 100, label %14
+  i8 101, label %15
+  i8 102, label %16
+  ]
+
+; <label>:2:                                      ; preds = %1
+  br label %18
+
+; <label>:3:                                      ; preds = %1
+  br label %18
+
+; <label>:4:                                      ; preds = %1
+  br label %18
+
+; <label>:5:                                      ; preds = %1
+  br label %18
+
+; <label>:6:                                      ; preds = %1
+  br label %18
+
+; <label>:7:                                      ; preds = %1
+  br label %18
+
+; <label>:8:                                      ; preds = %1
+  br label %18
+
+; <label>:9:                                      ; preds = %1
+  br label %18
+
+; <label>:10:                                     ; preds = %1
+  br label %18
+
+; <label>:11:                                     ; preds = %1
+  br label %18
+
+; <label>:12:                                     ; preds = %1
+  br label %18
+
+; <label>:13:                                     ; preds = %1
+  br label %18
+
+; <label>:14:                                     ; preds = %1
+  br label %18
+
+; <label>:15:                                     ; preds = %1
+  br label %18
+
+; <label>:16:                                     ; preds = %1
+  br label %18
+
+; <label>:17:                                     ; preds = %1
+  br label %18
+
+; <label>:18:                                     ; preds = %1, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5, %4, %3, %2
+  %19 = phi i8 [ -1, %17 ], [ 15, %16 ], [ 14, %15 ], [ 13, %14 ], [ 12, %13 ], [ 11, %12 ], [ 10, %11 ], [ 9, %10 ], [ 8, %9 ], [ 7, %8 ], [ 6, %7 ], [ 5, %6 ], [ 4, %5 ], [ 3, %4 ], [ 2, %3 ], [ 1, %2 ], [ 0, %1 ]
+  ret i8 %19
+}
+
+attributes #0 = { norecurse nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 8.0.0-3 (tags/RELEASE_800/final)"}
Index: test/Transforms/SimplifyCFG/switch-masked-bits.ll
===================================================================
--- test/Transforms/SimplifyCFG/switch-masked-bits.ll
+++ test/Transforms/SimplifyCFG/switch-masked-bits.ll
@@ -4,10 +4,10 @@
 define i32 @test1(i32 %x) nounwind {
 ; CHECK-LABEL: @test1(
 ; CHECK-NEXT:  a:
-; CHECK-NEXT:    [[I:%.*]] = shl i32 %x, 1
+; CHECK-NEXT:    [[I:%.*]] = shl i32 [[X:%.*]], 1
 ; CHECK-NEXT:    [[COND:%.*]] = icmp eq i32 [[I]], 24
-; CHECK-NEXT:    [[DOT:%.*]] = select i1 [[COND]], i32 5, i32 0
-; CHECK-NEXT:    ret i32 [[DOT]]
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[COND]], i32 5, i32 0
+; CHECK-NEXT:    ret i32 [[SPEC_SELECT]]
 ;
   %i = shl i32 %x, 1
   switch i32 %i, label %a [
@@ -48,12 +48,19 @@
 
 define i1 @repeated_signbits(i8 %condition) {
 ; CHECK-LABEL: @repeated_signbits(
-; CHECK:         switch i32
-; CHECK-DAG:     i32 -128, label %a
-; CHECK-DAG:     i32 -1, label %a
-; CHECK-DAG:     i32  0, label %a
-; CHECK-DAG:     i32  127, label %a
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SEXT:%.*]] = sext i8 [[CONDITION:%.*]] to i32
+; CHECK-NEXT:    switch i32 [[SEXT]], label [[DEFAULT:%.*]] [
+; CHECK-NEXT:    i32 0, label [[A:%.*]]
+; CHECK-NEXT:    i32 127, label [[A]]
+; CHECK-NEXT:    i32 -128, label [[A]]
+; CHECK-NEXT:    i32 -1, label [[A]]
 ; CHECK-NEXT:    ]
+; CHECK:       a:
+; CHECK-NEXT:    [[MERGE:%.*]] = phi i1 [ true, [[ENTRY:%.*]] ], [ true, [[ENTRY]] ], [ true, [[ENTRY]] ], [ true, [[ENTRY]] ], [ false, [[DEFAULT]] ]
+; CHECK-NEXT:    ret i1 [[MERGE]]
+; CHECK:       default:
+; CHECK-NEXT:    br label [[A]]
 ;
 entry:
   %sext = sext i8 %condition to i32
Index: test/Transforms/SimplifyCFG/switch-on-const-select.ll
===================================================================
--- test/Transforms/SimplifyCFG/switch-on-const-select.ll
+++ test/Transforms/SimplifyCFG/switch-on-const-select.ll
@@ -1,136 +1,154 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -simplifycfg -S | FileCheck -enable-var-scope %s
 
 ; Test basic folding to a conditional branch.
 define i32 @foo(i64 %x, i64 %y) nounwind {
 ; CHECK-LABEL: @foo(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EQ:%.*]] = icmp eq i64 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    br i1 [[EQ]], label [[B:%.*]], label [[SWITCH:%.*]]
+; CHECK:       switch:
+; CHECK-NEXT:    [[LT:%.*]] = icmp slt i64 [[X]], [[Y]]
+; CHECK-NEXT:    br i1 [[LT]], label [[A:%.*]], label [[B]]
+; CHECK:       a:
+; CHECK-NEXT:    tail call void @bees.a() #0
+; CHECK-NEXT:    ret i32 1
+; CHECK:       b:
+; CHECK-NEXT:    [[RETVAL:%.*]] = phi i32 [ 0, [[SWITCH]] ], [ 2, [[ENTRY:%.*]] ]
+; CHECK-NEXT:    tail call void @bees.b() #0
+; CHECK-NEXT:    ret i32 [[RETVAL]]
+;
 entry:
-    %eq = icmp eq i64 %x, %y
-    br i1 %eq, label %b, label %switch
+  %eq = icmp eq i64 %x, %y
+  br i1 %eq, label %b, label %switch
 switch:
-    %lt = icmp slt i64 %x, %y
-; CHECK: br i1 %lt, label %a, label %b
-    %qux = select i1 %lt, i32 0, i32 2
-    switch i32 %qux, label %bees [
-        i32 0, label %a
-        i32 1, label %b
-        i32 2, label %b
-    ]
+  %lt = icmp slt i64 %x, %y
+  %qux = select i1 %lt, i32 0, i32 2
+  switch i32 %qux, label %bees [
+  i32 0, label %a
+  i32 1, label %b
+  i32 2, label %b
+  ]
 a:
-    tail call void @bees.a() nounwind
-    ret i32 1
-; CHECK: b:
-; CHECK-NEXT: %retval = phi i32 [ 0, %switch ], [ 2, %entry ]
+  tail call void @bees.a() nounwind
+  ret i32 1
 b:
-    %retval = phi i32 [0, %switch], [0, %switch], [2, %entry]
-    tail call void @bees.b() nounwind
-    ret i32 %retval
-; CHECK-NOT: bees:
+  %retval = phi i32 [0, %switch], [0, %switch], [2, %entry]
+  tail call void @bees.b() nounwind
+  ret i32 %retval
 bees:
-    tail call void @llvm.trap() nounwind
-    unreachable
+  tail call void @llvm.trap() nounwind
+  unreachable
 }
 
 ; Test basic folding to an unconditional branch.
 define i32 @bar(i64 %x, i64 %y) nounwind {
 ; CHECK-LABEL: @bar(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    tail call void @bees.a() #0
+; CHECK-NEXT:    ret i32 0
+;
 entry:
-; CHECK-NEXT: entry:
-; CHECK-NEXT: tail call void @bees.a() [[$NUW:#[0-9]+]]
-; CHECK-NEXT: ret i32 0
-    %lt = icmp slt i64 %x, %y
-    %qux = select i1 %lt, i32 0, i32 2
-    switch i32 %qux, label %bees [
-        i32 0, label %a
-        i32 1, label %b
-        i32 2, label %a
-    ]
+  %lt = icmp slt i64 %x, %y
+  %qux = select i1 %lt, i32 0, i32 2
+  switch i32 %qux, label %bees [
+  i32 0, label %a
+  i32 1, label %b
+  i32 2, label %a
+  ]
 a:
-    %retval = phi i32 [0, %entry], [0, %entry], [1, %b]
-    tail call void @bees.a() nounwind
-    ret i32 0
+  %retval = phi i32 [0, %entry], [0, %entry], [1, %b]
+  tail call void @bees.a() nounwind
+  ret i32 0
 b:
-    tail call void @bees.b() nounwind
-    br label %a
+  tail call void @bees.b() nounwind
+  br label %a
 bees:
-    tail call void @llvm.trap() nounwind
-    unreachable
+  tail call void @llvm.trap() nounwind
+  unreachable
 }
 
 ; Test the edge case where both values from the select are the default case.
 define void @bazz(i64 %x, i64 %y) nounwind {
 ; CHECK-LABEL: @bazz(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    tail call void @bees.b() #0
+; CHECK-NEXT:    ret void
+;
 entry:
-; CHECK-NEXT: entry:
-; CHECK-NEXT: tail call void @bees.b() [[$NUW]]
-; CHECK-NEXT: ret void
-    %lt = icmp slt i64 %x, %y
-    %qux = select i1 %lt, i32 10, i32 12
-    switch i32 %qux, label %b [
-        i32 0, label %a
-        i32 1, label %bees
-        i32 2, label %bees
-    ]
+  %lt = icmp slt i64 %x, %y
+  %qux = select i1 %lt, i32 10, i32 12
+  switch i32 %qux, label %b [
+  i32 0, label %a
+  i32 1, label %bees
+  i32 2, label %bees
+  ]
 a:
-    tail call void @bees.a() nounwind
-    ret void
+  tail call void @bees.a() nounwind
+  ret void
 b:
-    tail call void @bees.b() nounwind
-    ret void
+  tail call void @bees.b() nounwind
+  ret void
 bees:
-    tail call void @llvm.trap()
-    unreachable
+  tail call void @llvm.trap()
+  unreachable
 }
 
 ; Test the edge case where both values from the select are equal.
 define void @quux(i64 %x, i64 %y) nounwind {
 ; CHECK-LABEL: @quux(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    tail call void @bees.a() #0
+; CHECK-NEXT:    ret void
+;
 entry:
-; CHECK-NEXT: entry:
-; CHECK-NEXT: tail call void @bees.a() [[$NUW]]
-; CHECK-NEXT: ret void
-    %lt = icmp slt i64 %x, %y
-    %qux = select i1 %lt, i32 0, i32 0
-    switch i32 %qux, label %b [
-        i32 0, label %a
-        i32 1, label %bees
-        i32 2, label %bees
-    ]
+  %lt = icmp slt i64 %x, %y
+  %qux = select i1 %lt, i32 0, i32 0
+  switch i32 %qux, label %b [
+  i32 0, label %a
+  i32 1, label %bees
+  i32 2, label %bees
+  ]
 a:
-    tail call void @bees.a() nounwind
-    ret void
+  tail call void @bees.a() nounwind
+  ret void
 b:
-    tail call void @bees.b() nounwind
-    ret void
+  tail call void @bees.b() nounwind
+  ret void
 bees:
-    tail call void @llvm.trap()
-    unreachable
+  tail call void @llvm.trap()
+  unreachable
 }
 
 ; A final test, for phi node munging.
 define i32 @xyzzy(i64 %x, i64 %y) {
 ; CHECK-LABEL: @xyzzy(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EQ:%.*]] = icmp eq i64 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    [[LT:%.*]] = icmp slt i64 [[X]], [[Y]]
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[LT]], i32 -1, i32 1
+; CHECK-NEXT:    [[VAL:%.*]] = select i1 [[EQ]], i32 0, i32 [[SPEC_SELECT]]
+; CHECK-NEXT:    ret i32 [[VAL]]
+;
 entry:
-    %eq = icmp eq i64 %x, %y
-    br i1 %eq, label %r, label %cont
+  %eq = icmp eq i64 %x, %y
+  br i1 %eq, label %r, label %cont
 cont:
-; CHECK: %lt = icmp slt i64 %x, %y
-    %lt = icmp slt i64 %x, %y
-; CHECK-NEXT: select i1 %lt, i32 -1, i32 1
-    %qux = select i1 %lt, i32 0, i32 2
-    switch i32 %qux, label %bees [
-        i32 0, label %a
-        i32 1, label %r
-        i32 2, label %r
-    ]
+  %lt = icmp slt i64 %x, %y
+  %qux = select i1 %lt, i32 0, i32 2
+  switch i32 %qux, label %bees [
+  i32 0, label %a
+  i32 1, label %r
+  i32 2, label %r
+  ]
 r:
-    %val = phi i32 [0, %entry], [1, %cont], [1, %cont]
-    ret i32 %val
+  %val = phi i32 [0, %entry], [1, %cont], [1, %cont]
+  ret i32 %val
 a:
-    ret i32 -1
-; CHECK-NOT: bees:
+  ret i32 -1
 bees:
-    tail call void @llvm.trap()
-    unreachable
+  tail call void @llvm.trap()
+  unreachable
 }
 
 declare void @llvm.trap() nounwind noreturn
Index: test/Transforms/SimplifyCFG/switch-range-to-icmp.ll
===================================================================
--- test/Transforms/SimplifyCFG/switch-range-to-icmp.ll
+++ test/Transforms/SimplifyCFG/switch-range-to-icmp.ll
@@ -1,18 +1,27 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt %s -simplifycfg -S | FileCheck %s
 
 declare i32 @f(i32)
 
 define i32 @basic(i32 %x) {
-; CHECK-LABEL: @basic
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %default
+; CHECK-LABEL: @basic(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[X_OFF:%.*]] = add i32 [[X:%.*]], -5
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[A:%.*]], label [[DEFAULT:%.*]]
+; CHECK:       default:
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @f(i32 0)
+; CHECK-NEXT:    ret i32 [[TMP0]]
+; CHECK:       a:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @f(i32 1)
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
 
 entry:
   switch i32 %x, label %default [
-    i32 5, label %a
-    i32 6, label %a
-    i32 7, label %a
+  i32 5, label %a
+  i32 6, label %a
+  i32 7, label %a
   ]
 default:
   %0 = call i32 @f(i32 0)
@@ -24,20 +33,28 @@
 
 
 define i32 @unreachable(i32 %x) {
-; CHECK-LABEL: @unreachable
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %b
+; CHECK-LABEL: @unreachable(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[X_OFF:%.*]] = add i32 [[X:%.*]], -5
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[A:%.*]], label [[B:%.*]]
+; CHECK:       a:
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @f(i32 0)
+; CHECK-NEXT:    ret i32 [[TMP0]]
+; CHECK:       b:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @f(i32 1)
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
 
 entry:
   switch i32 %x, label %unreachable [
-    i32 5, label %a
-    i32 6, label %a
-    i32 7, label %a
-    i32 10, label %b
-    i32 20, label %b
-    i32 30, label %b
-    i32 40, label %b
+  i32 5, label %a
+  i32 6, label %a
+  i32 7, label %a
+  i32 10, label %b
+  i32 20, label %b
+  i32 30, label %b
+  i32 40, label %b
   ]
 unreachable:
   unreachable
@@ -51,20 +68,28 @@
 
 
 define i32 @unreachable2(i32 %x) {
-; CHECK-LABEL: @unreachable2
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %b
+; CHECK-LABEL: @unreachable2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[X_OFF:%.*]] = add i32 [[X:%.*]], -5
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[A:%.*]], label [[B:%.*]]
+; CHECK:       a:
+; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @f(i32 0)
+; CHECK-NEXT:    ret i32 [[TMP0]]
+; CHECK:       b:
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @f(i32 1)
+; CHECK-NEXT:    ret i32 [[TMP1]]
+;
 
 entry:
   ; Note: folding the most popular case destination into the default
   ; would prevent switch-to-icmp here.
   switch i32 %x, label %unreachable [
-    i32 5, label %a
-    i32 6, label %a
-    i32 7, label %a
-    i32 10, label %b
-    i32 20, label %b
+  i32 5, label %a
+  i32 6, label %a
+  i32 7, label %a
+  i32 10, label %b
+  i32 20, label %b
   ]
 unreachable:
   unreachable
Index: test/Transforms/SimplifyCFG/switch-simplify-range.ll
===================================================================
--- /dev/null
+++ test/Transforms/SimplifyCFG/switch-simplify-range.ll
@@ -0,0 +1,199 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -passes='simplify-cfg<switch-to-lookup>' < %s | FileCheck %s
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+attributes #0 = { "no-jump-tables"="false" }
+
+define i64 @switch_common_right_bits(i8 %a) #0  {
+; CHECK-LABEL: @switch_common_right_bits(
+; CHECK-NEXT:  Entry:
+; CHECK-NEXT:    switch i8 [[A:%.*]], label [[SWITCHELSE:%.*]] [
+; CHECK-NEXT:    i8 123, label [[SWITCHPRONG:%.*]]
+; CHECK-NEXT:    i8 125, label [[SWITCHPRONG1:%.*]]
+; CHECK-NEXT:    i8 127, label [[SWITCHPRONG2:%.*]]
+; CHECK-NEXT:    i8 -127, label [[SWITCHPRONG3:%.*]]
+; CHECK-NEXT:    i8 -125, label [[SWITCHPRONG4:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       SwitchElse:
+; CHECK-NEXT:    [[MERGE:%.*]] = phi i64 [ 10, [[ENTRY:%.*]] ], [ 6, [[SWITCHPRONG]] ], [ 3, [[SWITCHPRONG1]] ], [ 4, [[SWITCHPRONG2]] ], [ 2, [[SWITCHPRONG3]] ], [ 1, [[SWITCHPRONG4]] ]
+; CHECK-NEXT:    ret i64 [[MERGE]]
+; CHECK:       SwitchProng:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng1:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng2:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng3:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng4:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+;
+Entry:
+  switch i8 %a, label %SwitchElse [
+  i8 123, label %SwitchProng
+  i8 125, label %SwitchProng1
+  i8 127, label %SwitchProng2
+  i8 129, label %SwitchProng3
+  i8 131, label %SwitchProng4
+  ]
+SwitchElse:                                       ; preds = %Entry
+  ret i64 10
+SwitchProng:                                      ; preds = %Entry
+  ret i64 6
+SwitchProng1:                                     ; preds = %Entry
+  ret i64 3
+SwitchProng2:                                     ; preds = %Entry
+  ret i64 4
+SwitchProng3:                                     ; preds = %Entry
+  ret i64 2
+SwitchProng4:                                     ; preds = %Entry
+  ret i64 1
+}
+
+define i64 @switch_clz1(i16 %a) optsize #0  {
+; CHECK-LABEL: @switch_clz1(
+; CHECK-NEXT:  Entry:
+; CHECK-NEXT:    switch i16 [[A:%.*]], label [[SWITCHELSE:%.*]] [
+; CHECK-NEXT:    i16 2, label [[SWITCHPRONG:%.*]]
+; CHECK-NEXT:    i16 4, label [[SWITCHPRONG1:%.*]]
+; CHECK-NEXT:    i16 8, label [[SWITCHPRONG2:%.*]]
+; CHECK-NEXT:    i16 1, label [[SWITCHPRONG3:%.*]]
+; CHECK-NEXT:    i16 64, label [[SWITCHPRONG6:%.*]]
+; CHECK-NEXT:    i16 128, label [[SWITCHPRONG7:%.*]]
+; CHECK-NEXT:    i16 16, label [[SWITCHPRONG5:%.*]]
+; CHECK-NEXT:    i16 32, label [[SWITCHPRONG4:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       SwitchElse:
+; CHECK-NEXT:    [[MERGE:%.*]] = phi i64 [ 10, [[ENTRY:%.*]] ], [ 6, [[SWITCHPRONG]] ], [ 3, [[SWITCHPRONG1]] ], [ 35, [[SWITCHPRONG2]] ], [ 31, [[SWITCHPRONG3]] ], [ 53, [[SWITCHPRONG4]] ], [ 51, [[SWITCHPRONG5]] ], [ 41, [[SWITCHPRONG6]] ], [ 34, [[SWITCHPRONG7]] ]
+; CHECK-NEXT:    ret i64 [[MERGE]]
+; CHECK:       SwitchProng:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng1:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng2:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng3:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng4:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng5:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng6:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+; CHECK:       SwitchProng7:
+; CHECK-NEXT:    br label [[SWITCHELSE]]
+;
+Entry:
+  switch i16 %a, label %SwitchElse [
+  i16 2, label %SwitchProng
+  i16 4, label %SwitchProng1
+  i16 8, label %SwitchProng2
+  i16 1, label %SwitchProng3
+  i16 64, label %SwitchProng6
+  i16 128, label %SwitchProng7
+  i16 16, label %SwitchProng5
+  i16 32, label %SwitchProng4
+  ]
+SwitchElse:                                       ; preds = %Entry
+  ret i64 10
+SwitchProng:                                      ; preds = %Entry
+  ret i64 6
+SwitchProng1:                                     ; preds = %Entry
+  ret i64 3
+SwitchProng2:                                     ; preds = %Entry
+  ret i64 35
+SwitchProng3:                                     ; preds = %Entry
+  ret i64 31
+SwitchProng4:                                     ; preds = %Entry
+  ret i64 53
+SwitchProng5:                                     ; preds = %Entry
+  ret i64 51
+SwitchProng6:                                     ; preds = %Entry
+  ret i64 41
+SwitchProng7:                                     ; preds = %Entry
+  ret i64 34
+}
+
+define i64 @switch_clz2(i8 %a) optsize #0  {
+; CHECK-LABEL: @switch_clz2(
+; CHECK-NEXT:  Entry:
+; CHECK-NEXT:    switch i8 [[A:%.*]], label [[SWITCHELSE:%.*]] [
+; CHECK-NEXT:    i8 -128, label [[SWITCHPRONG2:%.*]]
+; CHECK-NEXT:    i8 64, label [[SWITCHPRONG3:%.*]]
+; CHECK-NEXT:    i8 32, label [[SWITCHPRONG6:%.*]]
+; CHECK-NEXT:    i8 1, label [[SWITCHPRONG7:%.*]]
+; CHECK-NEXT:    i8 0, label [[SWITCHPRONG5:%.*]]
+; CHECK-NEXT:    ]
+; CHECK:       SwitchProng2:
+; CHECK-NEXT:    [[MERGE:%.*]] = phi i64 [ 35, [[ENTRY:%.*]] ], [ 31, [[SWITCHPRONG3]] ], [ 41, [[SWITCHPRONG6]] ], [ 40, [[SWITCHPRONG5]] ], [ 43, [[SWITCHPRONG7]] ], [ 12, [[SWITCHELSE]] ]
+; CHECK-NEXT:    ret i64 [[MERGE]]
+; CHECK:       SwitchProng3:
+; CHECK-NEXT:    br label [[SWITCHPRONG2]]
+; CHECK:       SwitchProng6:
+; CHECK-NEXT:    br label [[SWITCHPRONG2]]
+; CHECK:       SwitchProng5:
+; CHECK-NEXT:    br label [[SWITCHPRONG2]]
+; CHECK:       SwitchProng7:
+; CHECK-NEXT:    br label [[SWITCHPRONG2]]
+; CHECK:       SwitchElse:
+; CHECK-NEXT:    br label [[SWITCHPRONG2]]
+;
+Entry:
+  switch i8 %a, label %SwitchElse [
+  i8 128, label %SwitchProng2
+  i8 64, label %SwitchProng3
+  i8 32, label %SwitchProng6
+  i8 1, label %SwitchProng7
+  i8 0, label %SwitchProng5
+  ]
+SwitchProng2:                                     ; preds = %Entry
+  ret i64 35
+SwitchProng3:                                     ; preds = %Entry
+  ret i64 31
+SwitchProng6:                                     ; preds = %Entry
+  ret i64 41
+SwitchProng5:                                     ; preds = %Entry
+  ret i64 40
+SwitchProng7:                                     ; preds = %Entry
+  ret i64 43
+SwitchElse:                                     ; preds = %Entry
+  ret i64 12
+}
+
+;Must check that the default was filled in at index 0 as happened here:
+;@switch.table.switch_not_normalized_to_start_at_zero = private unnamed_addr constant [6 x i16] [i16 10, i16 7, i16 3, i16 1, i16 6, i16 8], align 2
+define i16 @switch_not_normalized_to_start_at_zero(i8 %a) #0  {
+; CHECK-LABEL: @switch_not_normalized_to_start_at_zero(
+; CHECK-NEXT:  Entry:
+; CHECK-NEXT:    [[SWITCH_TABLEIDX:%.*]] = sub i8 [[A:%.*]], 1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i8 [[SWITCH_TABLEIDX]], 5
+; CHECK-NEXT:    br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[SWITCHELSE:%.*]]
+; CHECK:       switch.lookup:
+; CHECK-NEXT:    [[SWITCH_GEP:%.*]] = getelementptr inbounds [5 x i16], [5 x i16]* @switch.table.switch_not_normalized_to_start_at_zero, i32 0, i8 [[SWITCH_TABLEIDX]]
+; CHECK-NEXT:    [[SWITCH_LOAD:%.*]] = load i16, i16* [[SWITCH_GEP]]
+; CHECK-NEXT:    ret i16 [[SWITCH_LOAD]]
+; CHECK:       SwitchElse:
+; CHECK-NEXT:    ret i16 10
+;
+Entry:
+  switch i8 %a, label %SwitchElse [
+  i8 4, label %SwitchProng
+  i8 2, label %SwitchProng1
+  i8 1, label %SwitchProng2
+  i8 3, label %SwitchProng3
+  i8 5, label %SwitchProng4
+  ]
+SwitchElse:                                       ; preds = %Entry
+  ret i16 10
+SwitchProng:                                      ; preds = %Entry
+  ret i16 6
+SwitchProng1:                                     ; preds = %Entry
+  ret i16 3
+SwitchProng2:                                     ; preds = %Entry
+  ret i16 7
+SwitchProng3:                                     ; preds = %Entry
+  ret i16 1
+SwitchProng4:                                     ; preds = %Entry
+  ret i16 8
+}
Index: test/Transforms/SimplifyCFG/switch_create-custom-dl.ll
===================================================================
--- test/Transforms/SimplifyCFG/switch_create-custom-dl.ll
+++ test/Transforms/SimplifyCFG/switch_create-custom-dl.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S -simplifycfg < %s | FileCheck %s
 target datalayout="p:40:64:64:32"
 
@@ -6,35 +7,54 @@
 declare void @foo2()
 
 define void @test1(i32 %V) {
-        %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
-        %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
-        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    switch i32 [[V:%.*]], label [[F:%.*]] [
+; CHECK-NEXT:    i32 17, label [[T:%.*]]
+; CHECK-NEXT:    i32 4, label [[T]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
+  %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
+  %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test1(
-; CHECK:  switch i32 %V, label %F [
-; CHECK:    i32 17, label %T
-; CHECK:    i32 4, label %T
-; CHECK:  ]
+  call void @foo2( )
+  ret void
 }
 
 define void @test1_ptr(i32* %V) {
-        %C1 = icmp eq i32* %V, inttoptr (i32 4 to i32*)
-        %C2 = icmp eq i32* %V, inttoptr (i32 17 to i32*)
-        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; CHECK-LABEL: @test1_ptr(
+; CHECK-NEXT:    [[MAGICPTR:%.*]] = ptrtoint i32* [[V:%.*]] to i32
+; CHECK-NEXT:    switch i32 [[MAGICPTR]], label [[F:%.*]] [
+; CHECK-NEXT:    i32 17, label [[T:%.*]]
+; CHECK-NEXT:    i32 4, label [[T]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp eq i32* %V, inttoptr (i32 4 to i32*)
+  %C2 = icmp eq i32* %V, inttoptr (i32 17 to i32*)
+  %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test1_ptr(
+  call void @foo2( )
+  ret void
 ; DL:  %magicptr = ptrtoint i32* %V to i32
 ; DL:  switch i32 %magicptr, label %F [
 ; DL:    i32 17, label %T
@@ -43,17 +63,29 @@
 }
 
 define void @test1_ptr_as1(i32 addrspace(1)* %V) {
-        %C1 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 4 to i32 addrspace(1)*)
-        %C2 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 17 to i32 addrspace(1)*)
-        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; CHECK-LABEL: @test1_ptr_as1(
+; CHECK-NEXT:    [[MAGICPTR:%.*]] = ptrtoint i32 addrspace(1)* [[V:%.*]] to i32
+; CHECK-NEXT:    switch i32 [[MAGICPTR]], label [[F:%.*]] [
+; CHECK-NEXT:    i32 17, label [[T:%.*]]
+; CHECK-NEXT:    i32 4, label [[T]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 4 to i32 addrspace(1)*)
+  %C2 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 17 to i32 addrspace(1)*)
+  %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test1_ptr_as1(
+  call void @foo2( )
+  ret void
 ; DL:  %magicptr = ptrtoint i32 addrspace(1)* %V to i16
 ; DL:  switch i16 %magicptr, label %F [
 ; DL:    i16 17, label %T
@@ -62,46 +94,74 @@
 }
 
 define void @test2(i32 %V) {
-        %C1 = icmp ne i32 %V, 4         ; <i1> [#uses=1]
-        %C2 = icmp ne i32 %V, 17                ; <i1> [#uses=1]
-        %CN = and i1 %C1, %C2           ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    switch i32 [[V:%.*]], label [[T:%.*]] [
+; CHECK-NEXT:    i32 17, label [[F:%.*]]
+; CHECK-NEXT:    i32 4, label [[F]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp ne i32 %V, 4         ; <i1> [#uses=1]
+  %C2 = icmp ne i32 %V, 17                ; <i1> [#uses=1]
+  %CN = and i1 %C1, %C2           ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test2(
-; CHECK:  switch i32 %V, label %T [
-; CHECK:    i32 17, label %F
-; CHECK:    i32 4, label %F
-; CHECK:  ]
+  call void @foo2( )
+  ret void
 }
 
 define void @test3(i32 %V) {
-        %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
-        br i1 %C1, label %T, label %N
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    switch i32 [[V:%.*]], label [[F:%.*]] [
+; CHECK-NEXT:    i32 4, label [[T:%.*]]
+; CHECK-NEXT:    i32 17, label [[T]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
+  br i1 %C1, label %T, label %N
 N:              ; preds = %0
-        %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
-        br i1 %C2, label %T, label %F
+  %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
+  br i1 %C2, label %T, label %F
 T:              ; preds = %N, %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %N
-        call void @foo2( )
-        ret void
+  call void @foo2( )
+  ret void
 
-; CHECK-LABEL: @test3(
-; CHECK: switch i32 %V, label %F [
-; CHECK:     i32 4, label %T
-; CHECK:     i32 17, label %T
-; CHECK:   ]
 }
 
 
 
 define i32 @test4(i8 zeroext %c) nounwind ssp noredzone {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[LOR_RHS:%.*]] [
+; CHECK-NEXT:    i8 62, label [[LOR_END:%.*]]
+; CHECK-NEXT:    i8 34, label [[LOR_END]]
+; CHECK-NEXT:    i8 92, label [[LOR_END]]
+; CHECK-NEXT:    ]
+; CHECK:       lor.rhs:
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ true, [[ENTRY:%.*]] ], [ false, [[LOR_RHS]] ], [ true, [[ENTRY]] ], [ true, [[ENTRY]] ]
+; CHECK-NEXT:    [[LOR_EXT:%.*]] = zext i1 [[TMP0]] to i32
+; CHECK-NEXT:    ret i32 [[LOR_EXT]]
+;
 entry:
   %cmp = icmp eq i8 %c, 62
   br i1 %cmp, label %lor.end, label %lor.lhs.false
@@ -119,20 +179,28 @@
   %lor.ext = zext i1 %0 to i32
   ret i32 %lor.ext
 
-; CHECK-LABEL: @test4(
-; CHECK:  switch i8 %c, label %lor.rhs [
-; CHECK:    i8 62, label %lor.end
-; CHECK:    i8 34, label %lor.end
-; CHECK:    i8 92, label %lor.end
-; CHECK:  ]
 }
 
 define i32 @test5(i8 zeroext %c) nounwind ssp noredzone {
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[LOR_RHS:%.*]] [
+; CHECK-NEXT:    i8 62, label [[LOR_END:%.*]]
+; CHECK-NEXT:    i8 34, label [[LOR_END]]
+; CHECK-NEXT:    i8 92, label [[LOR_END]]
+; CHECK-NEXT:    ]
+; CHECK:       lor.rhs:
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ true, [[ENTRY:%.*]] ], [ false, [[LOR_RHS]] ], [ true, [[ENTRY]] ], [ true, [[ENTRY]] ]
+; CHECK-NEXT:    [[LOR_EXT:%.*]] = zext i1 [[TMP0]] to i32
+; CHECK-NEXT:    ret i32 [[LOR_EXT]]
+;
 entry:
   switch i8 %c, label %lor.rhs [
-    i8 62, label %lor.end
-    i8 34, label %lor.end
-    i8 92, label %lor.end
+  i8 62, label %lor.end
+  i8 34, label %lor.end
+  i8 92, label %lor.end
   ]
 
 lor.rhs:                                          ; preds = %entry
@@ -143,48 +211,63 @@
   %0 = phi i1 [ true, %entry ], [ %V, %lor.rhs ], [ true, %entry ], [ true, %entry ]
   %lor.ext = zext i1 %0 to i32
   ret i32 %lor.ext
-; CHECK-LABEL: @test5(
-; CHECK:  switch i8 %c, label %lor.rhs [
-; CHECK:    i8 62, label %lor.end
-; CHECK:    i8 34, label %lor.end
-; CHECK:    i8 92, label %lor.end
-; CHECK:  ]
 }
 
 
 define i1 @test6({ i32, i32 }* %I) {
+; CHECK-LABEL: @test6(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP_1_I:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[I:%.*]], i64 0, i32 1
+; CHECK-NEXT:    [[TMP_2_I:%.*]] = load i32, i32* [[TMP_1_I]]
+; CHECK-NEXT:    [[TMP_2_I_OFF:%.*]] = add i32 [[TMP_2_I]], -14
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[TMP_2_I_OFF]], 6
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[SWITCH]], i1 true, i1 false
+; CHECK-NEXT:    ret i1 [[SPEC_SELECT]]
+;
 entry:
-        %tmp.1.i = getelementptr { i32, i32 }, { i32, i32 }* %I, i64 0, i32 1         ; <i32*> [#uses=1]
-        %tmp.2.i = load i32, i32* %tmp.1.i           ; <i32> [#uses=6]
-        %tmp.2 = icmp eq i32 %tmp.2.i, 14               ; <i1> [#uses=1]
-        br i1 %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
+  %tmp.1.i = getelementptr { i32, i32 }, { i32, i32 }* %I, i64 0, i32 1         ; <i32*> [#uses=1]
+  %tmp.2.i = load i32, i32* %tmp.1.i           ; <i32> [#uses=6]
+  %tmp.2 = icmp eq i32 %tmp.2.i, 14               ; <i1> [#uses=1]
+  br i1 %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
 shortcirc_next.0:               ; preds = %entry
-        %tmp.6 = icmp eq i32 %tmp.2.i, 15               ; <i1> [#uses=1]
-        br i1 %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
+  %tmp.6 = icmp eq i32 %tmp.2.i, 15               ; <i1> [#uses=1]
+  br i1 %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
 shortcirc_next.1:               ; preds = %shortcirc_next.0
-        %tmp.11 = icmp eq i32 %tmp.2.i, 16              ; <i1> [#uses=1]
-        br i1 %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
+  %tmp.11 = icmp eq i32 %tmp.2.i, 16              ; <i1> [#uses=1]
+  br i1 %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
 shortcirc_next.2:               ; preds = %shortcirc_next.1
-        %tmp.16 = icmp eq i32 %tmp.2.i, 17              ; <i1> [#uses=1]
-        br i1 %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
+  %tmp.16 = icmp eq i32 %tmp.2.i, 17              ; <i1> [#uses=1]
+  br i1 %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
 shortcirc_next.3:               ; preds = %shortcirc_next.2
-        %tmp.21 = icmp eq i32 %tmp.2.i, 18              ; <i1> [#uses=1]
-        br i1 %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
+  %tmp.21 = icmp eq i32 %tmp.2.i, 18              ; <i1> [#uses=1]
+  br i1 %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
 shortcirc_next.4:               ; preds = %shortcirc_next.3
-        %tmp.26 = icmp eq i32 %tmp.2.i, 19              ; <i1> [#uses=1]
-        br label %UnifiedReturnBlock
+  %tmp.26 = icmp eq i32 %tmp.2.i, 19              ; <i1> [#uses=1]
+  br label %UnifiedReturnBlock
 shortcirc_done.4:               ; preds = %shortcirc_next.3, %shortcirc_next.2, %shortcirc_next.1, %shortcirc_next.0, %entry
-        br label %UnifiedReturnBlock
+  br label %UnifiedReturnBlock
 UnifiedReturnBlock:             ; preds = %shortcirc_done.4, %shortcirc_next.4
-        %UnifiedRetVal = phi i1 [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ]             ; <i1> [#uses=1]
-        ret i1 %UnifiedRetVal
+  %UnifiedRetVal = phi i1 [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ]             ; <i1> [#uses=1]
+  ret i1 %UnifiedRetVal
 
-; CHECK-LABEL: @test6(
-; CHECK: %tmp.2.i.off = add i32 %tmp.2.i, -14
-; CHECK: %switch = icmp ult i32 %tmp.2.i.off, 6
 }
 
 define void @test7(i8 zeroext %c, i32 %x) nounwind ssp noredzone {
+; CHECK-LABEL: @test7(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 32
+; CHECK-NEXT:    br i1 [[CMP]], label [[IF_THEN:%.*]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i8 99, label [[IF_THEN]]
+; CHECK-NEXT:    i8 97, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    tail call void @foo1() #2
+; CHECK-NEXT:    ret void
+; CHECK:       if.end:
+; CHECK-NEXT:    ret void
+;
 entry:
   %cmp = icmp ult i32 %x, 32
   %cmp4 = icmp eq i8 %c, 97
@@ -200,17 +283,27 @@
 if.end:                                           ; preds = %entry
   ret void
 
-; CHECK-LABEL: @test7(
-; CHECK:   %cmp = icmp ult i32 %x, 32
-; CHECK:   br i1 %cmp, label %if.then, label %switch.early.test
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %if.end [
-; CHECK:     i8 99, label %if.then
-; CHECK:     i8 97, label %if.then
-; CHECK:   ]
 }
 
 define i32 @test8(i8 zeroext %c, i32 %x, i1 %C) nounwind ssp noredzone {
+; CHECK-LABEL: @test8(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[C:%.*]], label [[N:%.*]], label [[IF_THEN:%.*]]
+; CHECK:       N:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 32
+; CHECK-NEXT:    br i1 [[CMP]], label [[IF_THEN]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i8 99, label [[IF_THEN]]
+; CHECK-NEXT:    i8 97, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    [[A:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ 42, [[SWITCH_EARLY_TEST]] ], [ 42, [[N]] ], [ 42, [[SWITCH_EARLY_TEST]] ]
+; CHECK-NEXT:    tail call void @foo1() #2
+; CHECK-NEXT:    ret i32 [[A]]
+; CHECK:       if.end:
+; CHECK-NEXT:    ret i32 0
+;
 entry:
   br i1 %C, label %N, label %if.then
 N:
@@ -229,17 +322,33 @@
 if.end:                                           ; preds = %entry
   ret i32 0
 
-; CHECK-LABEL: @test8(
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %if.end [
-; CHECK:     i8 99, label %if.then
-; CHECK:     i8 97, label %if.then
-; CHECK:   ]
-; CHECK:   %A = phi i32 [ 0, %entry ], [ 42, %switch.early.test ], [ 42, %N ], [ 42, %switch.early.test ]
 }
 
 ;; This is "Example 7" from http://blog.regehr.org/archives/320
 define i32 @test9(i8 zeroext %c) nounwind ssp noredzone {
+; CHECK-LABEL: @test9(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[C:%.*]], 33
+; CHECK-NEXT:    br i1 [[CMP]], label [[LOR_END:%.*]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i8 [[C]], label [[LOR_RHS:%.*]] [
+; CHECK-NEXT:    i8 92, label [[LOR_END]]
+; CHECK-NEXT:    i8 62, label [[LOR_END]]
+; CHECK-NEXT:    i8 60, label [[LOR_END]]
+; CHECK-NEXT:    i8 59, label [[LOR_END]]
+; CHECK-NEXT:    i8 58, label [[LOR_END]]
+; CHECK-NEXT:    i8 46, label [[LOR_END]]
+; CHECK-NEXT:    i8 44, label [[LOR_END]]
+; CHECK-NEXT:    i8 34, label [[LOR_END]]
+; CHECK-NEXT:    i8 39, label [[LOR_END]]
+; CHECK-NEXT:    ]
+; CHECK:       lor.rhs:
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ true, [[SWITCH_EARLY_TEST]] ], [ false, [[LOR_RHS]] ], [ true, [[ENTRY:%.*]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ]
+; CHECK-NEXT:    [[CONV46:%.*]] = zext i1 [[TMP0]] to i32
+; CHECK-NEXT:    ret i32 [[CONV46]]
+;
 entry:
   %cmp = icmp ult i8 %c, 33
   br i1 %cmp, label %lor.end, label %lor.lhs.false
@@ -285,25 +394,23 @@
   %conv46 = zext i1 %0 to i32
   ret i32 %conv46
 
-; CHECK-LABEL: @test9(
-; CHECK:   %cmp = icmp ult i8 %c, 33
-; CHECK:   br i1 %cmp, label %lor.end, label %switch.early.test
-
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %lor.rhs [
-; CHECK:     i8 92, label %lor.end
-; CHECK:     i8 62, label %lor.end
-; CHECK:     i8 60, label %lor.end
-; CHECK:     i8 59, label %lor.end
-; CHECK:     i8 58, label %lor.end
-; CHECK:     i8 46, label %lor.end
-; CHECK:     i8 44, label %lor.end
-; CHECK:     i8 34, label %lor.end
-; CHECK:     i8 39, label %lor.end
-; CHECK:   ]
+
 }
 
 define i32 @test10(i32 %mode, i1 %Cond) {
+; CHECK-LABEL: @test10(
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[SWITCH_EARLY_TEST:%.*]], label [[F:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i32 [[MODE:%.*]], label [[T:%.*]] [
+; CHECK-NEXT:    i32 51, label [[F]]
+; CHECK-NEXT:    i32 0, label [[F]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    [[MERGE:%.*]] = phi i32 [ 123, [[SWITCH_EARLY_TEST]] ], [ 324, [[F]] ]
+; CHECK-NEXT:    ret i32 [[MERGE]]
+; CHECK:       F:
+; CHECK-NEXT:    br label [[T]]
+;
   %A = icmp ne i32 %mode, 0
   %B = icmp ne i32 %mode, 51
   %C = and i1 %A, %B
@@ -314,17 +421,27 @@
 F:
   ret i32 324
 
-; CHECK-LABEL: @test10(
-; CHECK:  br i1 %Cond, label %switch.early.test, label %F
-; CHECK:switch.early.test:
-; CHECK:  switch i32 %mode, label %T [
-; CHECK:    i32 51, label %F
-; CHECK:    i32 0, label %F
-; CHECK:  ]
 }
 
 ; PR8780
 define i32 @test11(i32 %bar) nounwind {
+; CHECK-LABEL: @test11(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[BAR:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 55, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 53, label [[RETURN]]
+; CHECK-NEXT:    i32 35, label [[RETURN]]
+; CHECK-NEXT:    i32 24, label [[RETURN]]
+; CHECK-NEXT:    i32 23, label [[RETURN]]
+; CHECK-NEXT:    i32 12, label [[RETURN]]
+; CHECK-NEXT:    i32 4, label [[RETURN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.end:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = phi i32 [ 0, [[IF_END]] ], [ 1, [[ENTRY:%.*]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ]
+; CHECK-NEXT:    ret i32 [[RETVAL_0]]
+;
 entry:
   %cmp = icmp eq i32 %bar, 4
   %cmp2 = icmp eq i32 %bar, 35
@@ -353,19 +470,21 @@
   %retval.0 = phi i32 [ 1, %if.then ], [ 0, %if.end ]
   ret i32 %retval.0
 
-; CHECK-LABEL: @test11(
-; CHECK: switch i32 %bar, label %if.end [
-; CHECK:   i32 55, label %return
-; CHECK:   i32 53, label %return
-; CHECK:   i32 35, label %return
-; CHECK:   i32 24, label %return
-; CHECK:   i32 23, label %return
-; CHECK:   i32 12, label %return
-; CHECK:   i32 4, label %return
-; CHECK: ]
 }
 
 define void @test12() nounwind {
+; CHECK-LABEL: @test12(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A_OLD:%.*]] = icmp eq i32 undef, undef
+; CHECK-NEXT:    br i1 [[A_OLD]], label [[BB55_US_US:%.*]], label [[MALFORMED:%.*]]
+; CHECK:       bb55.us.us:
+; CHECK-NEXT:    [[B:%.*]] = icmp ugt i32 undef, undef
+; CHECK-NEXT:    [[A:%.*]] = icmp eq i32 undef, undef
+; CHECK-NEXT:    [[OR_COND:%.*]] = or i1 [[B]], [[A]]
+; CHECK-NEXT:    br i1 [[OR_COND]], label [[BB55_US_US]], label [[MALFORMED]]
+; CHECK:       malformed:
+; CHECK-NEXT:    ret void
+;
 entry:
   br label %bb49.us.us
 
@@ -382,12 +501,26 @@
 
 malformed:
   ret void
-; CHECK-LABEL: @test12(
 
 }
 
 ; test13 - handle switch formation with ult.
 define void @test13(i32 %x) nounwind ssp noredzone {
+; CHECK-LABEL: @test13(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[X:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 6, label [[IF_THEN:%.*]]
+; CHECK-NEXT:    i32 4, label [[IF_THEN]]
+; CHECK-NEXT:    i32 3, label [[IF_THEN]]
+; CHECK-NEXT:    i32 1, label [[IF_THEN]]
+; CHECK-NEXT:    i32 0, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    call void @foo1() #3
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       if.end:
+; CHECK-NEXT:    ret void
+;
 entry:
   %cmp = icmp ult i32 %x, 2
   br i1 %cmp, label %if.then, label %lor.lhs.false3
@@ -410,18 +543,26 @@
 
 if.end:                                           ; preds = %if.then, %lor.lhs.false9
   ret void
-; CHECK-LABEL: @test13(
-; CHECK:  switch i32 %x, label %if.end [
-; CHECK:     i32 6, label %if.then
-; CHECK:     i32 4, label %if.then
-; CHECK:     i32 3, label %if.then
-; CHECK:     i32 1, label %if.then
-; CHECK:     i32 0, label %if.then
-; CHECK:   ]
 }
 
 ; test14 - handle switch formation with ult.
 define void @test14(i32 %x) nounwind ssp noredzone {
+; CHECK-LABEL: @test14(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[X:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 6, label [[IF_THEN:%.*]]
+; CHECK-NEXT:    i32 4, label [[IF_THEN]]
+; CHECK-NEXT:    i32 3, label [[IF_THEN]]
+; CHECK-NEXT:    i32 2, label [[IF_THEN]]
+; CHECK-NEXT:    i32 1, label [[IF_THEN]]
+; CHECK-NEXT:    i32 0, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    call void @foo1() #3
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       if.end:
+; CHECK-NEXT:    ret void
+;
 entry:
   %cmp = icmp ugt i32 %x, 2
   br i1 %cmp, label %lor.lhs.false3, label %if.then
@@ -444,18 +585,15 @@
 
 if.end:                                           ; preds = %if.then, %lor.lhs.false9
   ret void
-; CHECK-LABEL: @test14(
-; CHECK:  switch i32 %x, label %if.end [
-; CHECK:     i32 6, label %if.then
-; CHECK:     i32 4, label %if.then
-; CHECK:     i32 3, label %if.then
-; CHECK:     i32 1, label %if.then
-; CHECK:     i32 0, label %if.then
-; CHECK:   ]
 }
 
 ; Don't crash on ginormous ranges.
 define void @test15(i128 %x) nounwind {
+; CHECK-LABEL: @test15(
+; CHECK-NEXT:  if.end:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i128 [[X:%.*]], 2
+; CHECK-NEXT:    ret void
+;
   %cmp = icmp ugt i128 %x, 2
   br i1 %cmp, label %if.end, label %lor.false
 
@@ -470,18 +608,19 @@
 if.end:
   ret void
 
-; CHECK-LABEL: @test15(
-; CHECK-NOT: switch
-; CHECK: ret void
 }
 
 ; PR8675
 ; rdar://5134905
 define zeroext i1 @test16(i32 %x) nounwind {
-entry:
 ; CHECK-LABEL: @test16(
-; CHECK: %x.off = add i32 %x, -1
-; CHECK: %switch = icmp ult i32 %x.off, 3
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[X_OFF:%.*]] = add i32 [[X:%.*]], -1
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[SWITCH]], i1 true, i1 false
+; CHECK-NEXT:    ret i1 [[SPEC_SELECT]]
+;
+entry:
   %cmp.i = icmp eq i32 %x, 1
   br i1 %cmp.i, label %lor.end, label %lor.lhs.false
 
@@ -500,6 +639,17 @@
 
 ; Check that we don't turn an icmp into a switch where it's not useful.
 define void @test17(i32 %x, i32 %y) {
+; CHECK-LABEL: @test17(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 3
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[Y:%.*]], 2
+; CHECK-NEXT:    [[OR_COND775:%.*]] = or i1 [[CMP]], [[SWITCH]]
+; CHECK-NEXT:    br i1 [[OR_COND775]], label [[LOR_LHS_FALSE8:%.*]], label [[RETURN:%.*]]
+; CHECK:       lor.lhs.false8:
+; CHECK-NEXT:    tail call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
   %cmp = icmp ult i32 %x, 3
   %switch = icmp ult i32 %y, 2
   %or.cond775 = or i1 %cmp, %switch
@@ -512,13 +662,20 @@
 return:
   ret void
 
-; CHECK-LABEL: @test17(
-; CHECK-NOT: switch.early.test
-; CHECK-NOT: switch i32
-; CHECK: ret void
 }
 
 define void @test18(i32 %arg) {
+; CHECK-LABEL: @test18(
+; CHECK-NEXT:  bb:
+; CHECK-NEXT:    [[ARG_OFF:%.*]] = add i32 [[ARG:%.*]], -8
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[ARG_OFF]], 11
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[BB19:%.*]], label [[BB20:%.*]]
+; CHECK:       bb19:
+; CHECK-NEXT:    tail call void @foo1()
+; CHECK-NEXT:    br label [[BB20]]
+; CHECK:       bb20:
+; CHECK-NEXT:    ret void
+;
 bb:
   %tmp = and i32 %arg, -2
   %tmp1 = icmp eq i32 %tmp, 8
@@ -550,12 +707,23 @@
 bb20:                                             ; preds = %bb19, %bb8
   ret void
 
-; CHECK-LABEL: @test18(
-; CHECK: %arg.off = add i32 %arg, -8
-; CHECK: icmp ult i32 %arg.off, 11
 }
 
 define void @PR26323(i1 %tobool23, i32 %tmp3) {
+; CHECK-LABEL: @PR26323(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TOBOOL5:%.*]] = icmp ne i32 [[TMP3:%.*]], 0
+; CHECK-NEXT:    [[NEG14:%.*]] = and i32 [[TMP3]], -2
+; CHECK-NEXT:    [[CMP17:%.*]] = icmp ne i32 [[NEG14]], -1
+; CHECK-NEXT:    [[OR_COND:%.*]] = and i1 [[TOBOOL5]], [[TOBOOL23:%.*]]
+; CHECK-NEXT:    [[OR_COND1:%.*]] = and i1 [[CMP17]], [[OR_COND]]
+; CHECK-NEXT:    br i1 [[OR_COND1]], label [[IF_END29:%.*]], label [[IF_THEN27:%.*]]
+; CHECK:       if.then27:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    unreachable
+; CHECK:       if.end29:
+; CHECK-NEXT:    ret void
+;
 entry:
   %tobool5 = icmp ne i32 %tmp3, 0
   %neg14 = and i32 %tmp3, -2
@@ -587,6 +755,18 @@
 ; CHECK: i32 13, label %if
 ; CHECK: i32 12, label %if
 define void @test19(i32 %arg) {
+; CHECK-LABEL: @test19(
+; CHECK-NEXT:    switch i32 [[ARG:%.*]], label [[ELSE:%.*]] [
+; CHECK-NEXT:    i32 32, label [[IF:%.*]]
+; CHECK-NEXT:    i32 13, label [[IF]]
+; CHECK-NEXT:    i32 12, label [[IF]]
+; CHECK-NEXT:    ]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = and i32 %arg, -2
   %cmp1 = icmp eq i32 %and, 12
   %cmp2 = icmp eq i32 %arg, 32
@@ -606,6 +786,18 @@
 ; CHECK-NOT: switch
 ; CHECK: ret void
 define void @test20(i32 %arg) {
+; CHECK-LABEL: @test20(
+; CHECK-NEXT:    [[AND:%.*]] = and i32 [[ARG:%.*]], -2
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq i32 [[AND]], 13
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp eq i32 [[ARG]], 32
+; CHECK-NEXT:    [[PRED:%.*]] = or i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[PRED]], label [[IF:%.*]], label [[ELSE:%.*]]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = and i32 %arg, -2
   %cmp1 = icmp eq i32 %and, 13
   %cmp2 = icmp eq i32 %arg, 32
@@ -626,6 +818,18 @@
 ; CHECK: i32 13, label %else
 ; CHECK: i32 12, label %else
 define void @test21(i32 %arg) {
+; CHECK-LABEL: @test21(
+; CHECK-NEXT:    switch i32 [[ARG:%.*]], label [[IF:%.*]] [
+; CHECK-NEXT:    i32 32, label [[ELSE:%.*]]
+; CHECK-NEXT:    i32 13, label [[ELSE]]
+; CHECK-NEXT:    i32 12, label [[ELSE]]
+; CHECK-NEXT:    ]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = or i32 %arg, 1
   %cmp1 = icmp ne i32 %and, 13
   %cmp2 = icmp ne i32 %arg, 32
@@ -645,6 +849,18 @@
 ; CHECK-NOT: switch
 ; CHECK: ret void
 define void @test22(i32 %arg) {
+; CHECK-LABEL: @test22(
+; CHECK-NEXT:    [[AND:%.*]] = or i32 [[ARG:%.*]], 1
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp ne i32 [[AND]], 12
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp ne i32 [[ARG]], 32
+; CHECK-NEXT:    [[PRED:%.*]] = and i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[PRED]], label [[IF:%.*]], label [[ELSE:%.*]]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = or i32 %arg, 1
   %cmp1 = icmp ne i32 %and, 12
   %cmp2 = icmp ne i32 %arg, 32
@@ -657,4 +873,4 @@
 
 else:
   ret void
-}
\ No newline at end of file
+}
Index: test/Transforms/SimplifyCFG/switch_create.ll
===================================================================
--- test/Transforms/SimplifyCFG/switch_create.ll
+++ test/Transforms/SimplifyCFG/switch_create.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S -simplifycfg < %s | FileCheck %s
 ; RUN: opt -S -data-layout="p:32:32-p1:16:16" -simplifycfg < %s | FileCheck -check-prefix=CHECK -check-prefix=DL %s
 
@@ -6,102 +7,151 @@
 declare void @foo2()
 
 define void @test1(i32 %V) {
-        %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
-        %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
-        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    switch i32 [[V:%.*]], label [[F:%.*]] [
+; CHECK-NEXT:    i32 17, label [[T:%.*]]
+; CHECK-NEXT:    i32 4, label [[T]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
+  %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
+  %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test1(
-; CHECK:  switch i32 %V, label %F [
-; CHECK:    i32 17, label %T
-; CHECK:    i32 4, label %T
-; CHECK:  ]
+  call void @foo2( )
+  ret void
 }
 
 define void @test1_ptr(i32* %V) {
-        %C1 = icmp eq i32* %V, inttoptr (i32 4 to i32*)
-        %C2 = icmp eq i32* %V, inttoptr (i32 17 to i32*)
-        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; DL-LABEL: @test1_ptr(
+; DL-NEXT:    [[MAGICPTR:%.*]] = ptrtoint i32* [[V:%.*]] to i32
+; DL-NEXT:    switch i32 [[MAGICPTR]], label [[F:%.*]] [
+; DL-NEXT:    i32 17, label [[T:%.*]]
+; DL-NEXT:    i32 4, label [[T]]
+; DL-NEXT:    ]
+; DL:       T:
+; DL-NEXT:    call void @foo1()
+; DL-NEXT:    ret void
+; DL:       F:
+; DL-NEXT:    call void @foo2()
+; DL-NEXT:    ret void
+;
+  %C1 = icmp eq i32* %V, inttoptr (i32 4 to i32*)
+  %C2 = icmp eq i32* %V, inttoptr (i32 17 to i32*)
+  %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test1_ptr(
-; DL:  %magicptr = ptrtoint i32* %V to i32
-; DL:  switch i32 %magicptr, label %F [
-; DL:    i32 17, label %T
-; DL:    i32 4, label %T
-; DL:  ]
+  call void @foo2( )
+  ret void
 }
 
 define void @test1_ptr_as1(i32 addrspace(1)* %V) {
-        %C1 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 4 to i32 addrspace(1)*)
-        %C2 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 17 to i32 addrspace(1)*)
-        %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; DL-LABEL: @test1_ptr_as1(
+; DL-NEXT:    [[MAGICPTR:%.*]] = ptrtoint i32 addrspace(1)* [[V:%.*]] to i16
+; DL-NEXT:    switch i16 [[MAGICPTR]], label [[F:%.*]] [
+; DL-NEXT:    i16 17, label [[T:%.*]]
+; DL-NEXT:    i16 4, label [[T]]
+; DL-NEXT:    ]
+; DL:       T:
+; DL-NEXT:    call void @foo1()
+; DL-NEXT:    ret void
+; DL:       F:
+; DL-NEXT:    call void @foo2()
+; DL-NEXT:    ret void
+;
+  %C1 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 4 to i32 addrspace(1)*)
+  %C2 = icmp eq i32 addrspace(1)* %V, inttoptr (i32 17 to i32 addrspace(1)*)
+  %CN = or i1 %C1, %C2            ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test1_ptr_as1(
-; DL:  %magicptr = ptrtoint i32 addrspace(1)* %V to i16
-; DL:  switch i16 %magicptr, label %F [
-; DL:    i16 17, label %T
-; DL:    i16 4, label %T
-; DL:  ]
+  call void @foo2( )
+  ret void
 }
 
 define void @test2(i32 %V) {
-        %C1 = icmp ne i32 %V, 4         ; <i1> [#uses=1]
-        %C2 = icmp ne i32 %V, 17                ; <i1> [#uses=1]
-        %CN = and i1 %C1, %C2           ; <i1> [#uses=1]
-        br i1 %CN, label %T, label %F
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    switch i32 [[V:%.*]], label [[T:%.*]] [
+; CHECK-NEXT:    i32 17, label [[F:%.*]]
+; CHECK-NEXT:    i32 4, label [[F]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp ne i32 %V, 4         ; <i1> [#uses=1]
+  %C2 = icmp ne i32 %V, 17                ; <i1> [#uses=1]
+  %CN = and i1 %C1, %C2           ; <i1> [#uses=1]
+  br i1 %CN, label %T, label %F
 T:              ; preds = %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %0
-        call void @foo2( )
-        ret void
-; CHECK-LABEL: @test2(
-; CHECK:  switch i32 %V, label %T [
-; CHECK:    i32 17, label %F
-; CHECK:    i32 4, label %F
-; CHECK:  ]
+  call void @foo2( )
+  ret void
 }
 
 define void @test3(i32 %V) {
-        %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
-        br i1 %C1, label %T, label %N
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:    switch i32 [[V:%.*]], label [[F:%.*]] [
+; CHECK-NEXT:    i32 4, label [[T:%.*]]
+; CHECK-NEXT:    i32 17, label [[T]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       F:
+; CHECK-NEXT:    call void @foo2()
+; CHECK-NEXT:    ret void
+;
+  %C1 = icmp eq i32 %V, 4         ; <i1> [#uses=1]
+  br i1 %C1, label %T, label %N
 N:              ; preds = %0
-        %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
-        br i1 %C2, label %T, label %F
+  %C2 = icmp eq i32 %V, 17                ; <i1> [#uses=1]
+  br i1 %C2, label %T, label %F
 T:              ; preds = %N, %0
-        call void @foo1( )
-        ret void
+  call void @foo1( )
+  ret void
 F:              ; preds = %N
-        call void @foo2( )
-        ret void
+  call void @foo2( )
+  ret void
 
-; CHECK-LABEL: @test3(
-; CHECK: switch i32 %V, label %F [
-; CHECK:     i32 4, label %T
-; CHECK:     i32 17, label %T
-; CHECK:   ]
 }
 
 
 
 define i32 @test4(i8 zeroext %c) nounwind ssp noredzone {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[LOR_RHS:%.*]] [
+; CHECK-NEXT:    i8 62, label [[LOR_END:%.*]]
+; CHECK-NEXT:    i8 34, label [[LOR_END]]
+; CHECK-NEXT:    i8 92, label [[LOR_END]]
+; CHECK-NEXT:    ]
+; CHECK:       lor.rhs:
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ true, [[ENTRY:%.*]] ], [ false, [[LOR_RHS]] ], [ true, [[ENTRY]] ], [ true, [[ENTRY]] ]
+; CHECK-NEXT:    [[LOR_EXT:%.*]] = zext i1 [[TMP0]] to i32
+; CHECK-NEXT:    ret i32 [[LOR_EXT]]
+;
 entry:
   %cmp = icmp eq i8 %c, 62
   br i1 %cmp, label %lor.end, label %lor.lhs.false
@@ -119,20 +169,28 @@
   %lor.ext = zext i1 %0 to i32
   ret i32 %lor.ext
 
-; CHECK-LABEL: @test4(
-; CHECK:  switch i8 %c, label %lor.rhs [
-; CHECK:    i8 62, label %lor.end
-; CHECK:    i8 34, label %lor.end
-; CHECK:    i8 92, label %lor.end
-; CHECK:  ]
 }
 
 define i32 @test5(i8 zeroext %c) nounwind ssp noredzone {
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[LOR_RHS:%.*]] [
+; CHECK-NEXT:    i8 62, label [[LOR_END:%.*]]
+; CHECK-NEXT:    i8 34, label [[LOR_END]]
+; CHECK-NEXT:    i8 92, label [[LOR_END]]
+; CHECK-NEXT:    ]
+; CHECK:       lor.rhs:
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ true, [[ENTRY:%.*]] ], [ false, [[LOR_RHS]] ], [ true, [[ENTRY]] ], [ true, [[ENTRY]] ]
+; CHECK-NEXT:    [[LOR_EXT:%.*]] = zext i1 [[TMP0]] to i32
+; CHECK-NEXT:    ret i32 [[LOR_EXT]]
+;
 entry:
   switch i8 %c, label %lor.rhs [
-    i8 62, label %lor.end
-    i8 34, label %lor.end
-    i8 92, label %lor.end
+  i8 62, label %lor.end
+  i8 34, label %lor.end
+  i8 92, label %lor.end
   ]
 
 lor.rhs:                                          ; preds = %entry
@@ -143,48 +201,63 @@
   %0 = phi i1 [ true, %entry ], [ %V, %lor.rhs ], [ true, %entry ], [ true, %entry ]
   %lor.ext = zext i1 %0 to i32
   ret i32 %lor.ext
-; CHECK-LABEL: @test5(
-; CHECK:  switch i8 %c, label %lor.rhs [
-; CHECK:    i8 62, label %lor.end
-; CHECK:    i8 34, label %lor.end
-; CHECK:    i8 92, label %lor.end
-; CHECK:  ]
 }
 
 
 define i1 @test6({ i32, i32 }* %I) {
+; CHECK-LABEL: @test6(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP_1_I:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[I:%.*]], i64 0, i32 1
+; CHECK-NEXT:    [[TMP_2_I:%.*]] = load i32, i32* [[TMP_1_I]]
+; CHECK-NEXT:    [[TMP_2_I_OFF:%.*]] = add i32 [[TMP_2_I]], -14
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[TMP_2_I_OFF]], 6
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[SWITCH]], i1 true, i1 false
+; CHECK-NEXT:    ret i1 [[SPEC_SELECT]]
+;
 entry:
-        %tmp.1.i = getelementptr { i32, i32 }, { i32, i32 }* %I, i64 0, i32 1         ; <i32*> [#uses=1]
-        %tmp.2.i = load i32, i32* %tmp.1.i           ; <i32> [#uses=6]
-        %tmp.2 = icmp eq i32 %tmp.2.i, 14               ; <i1> [#uses=1]
-        br i1 %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
+  %tmp.1.i = getelementptr { i32, i32 }, { i32, i32 }* %I, i64 0, i32 1         ; <i32*> [#uses=1]
+  %tmp.2.i = load i32, i32* %tmp.1.i           ; <i32> [#uses=6]
+  %tmp.2 = icmp eq i32 %tmp.2.i, 14               ; <i1> [#uses=1]
+  br i1 %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
 shortcirc_next.0:               ; preds = %entry
-        %tmp.6 = icmp eq i32 %tmp.2.i, 15               ; <i1> [#uses=1]
-        br i1 %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
+  %tmp.6 = icmp eq i32 %tmp.2.i, 15               ; <i1> [#uses=1]
+  br i1 %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
 shortcirc_next.1:               ; preds = %shortcirc_next.0
-        %tmp.11 = icmp eq i32 %tmp.2.i, 16              ; <i1> [#uses=1]
-        br i1 %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
+  %tmp.11 = icmp eq i32 %tmp.2.i, 16              ; <i1> [#uses=1]
+  br i1 %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
 shortcirc_next.2:               ; preds = %shortcirc_next.1
-        %tmp.16 = icmp eq i32 %tmp.2.i, 17              ; <i1> [#uses=1]
-        br i1 %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
+  %tmp.16 = icmp eq i32 %tmp.2.i, 17              ; <i1> [#uses=1]
+  br i1 %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
 shortcirc_next.3:               ; preds = %shortcirc_next.2
-        %tmp.21 = icmp eq i32 %tmp.2.i, 18              ; <i1> [#uses=1]
-        br i1 %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
+  %tmp.21 = icmp eq i32 %tmp.2.i, 18              ; <i1> [#uses=1]
+  br i1 %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
 shortcirc_next.4:               ; preds = %shortcirc_next.3
-        %tmp.26 = icmp eq i32 %tmp.2.i, 19              ; <i1> [#uses=1]
-        br label %UnifiedReturnBlock
+  %tmp.26 = icmp eq i32 %tmp.2.i, 19              ; <i1> [#uses=1]
+  br label %UnifiedReturnBlock
 shortcirc_done.4:               ; preds = %shortcirc_next.3, %shortcirc_next.2, %shortcirc_next.1, %shortcirc_next.0, %entry
-        br label %UnifiedReturnBlock
+  br label %UnifiedReturnBlock
 UnifiedReturnBlock:             ; preds = %shortcirc_done.4, %shortcirc_next.4
-        %UnifiedRetVal = phi i1 [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ]             ; <i1> [#uses=1]
-        ret i1 %UnifiedRetVal
+  %UnifiedRetVal = phi i1 [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ]             ; <i1> [#uses=1]
+  ret i1 %UnifiedRetVal
 
-; CHECK-LABEL: @test6(
-; CHECK: %tmp.2.i.off = add i32 %tmp.2.i, -14
-; CHECK: %switch = icmp ult i32 %tmp.2.i.off, 6
 }
 
 define void @test7(i8 zeroext %c, i32 %x) nounwind ssp noredzone {
+; CHECK-LABEL: @test7(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 32
+; CHECK-NEXT:    br i1 [[CMP]], label [[IF_THEN:%.*]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i8 99, label [[IF_THEN]]
+; CHECK-NEXT:    i8 97, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    tail call void @foo1() #2
+; CHECK-NEXT:    ret void
+; CHECK:       if.end:
+; CHECK-NEXT:    ret void
+;
 entry:
   %cmp = icmp ult i32 %x, 32
   %cmp4 = icmp eq i8 %c, 97
@@ -200,17 +273,27 @@
 if.end:                                           ; preds = %entry
   ret void
 
-; CHECK-LABEL: @test7(
-; CHECK:   %cmp = icmp ult i32 %x, 32
-; CHECK:   br i1 %cmp, label %if.then, label %switch.early.test
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %if.end [
-; CHECK:     i8 99, label %if.then
-; CHECK:     i8 97, label %if.then
-; CHECK:   ]
 }
 
 define i32 @test8(i8 zeroext %c, i32 %x, i1 %C) nounwind ssp noredzone {
+; CHECK-LABEL: @test8(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[C:%.*]], label [[N:%.*]], label [[IF_THEN:%.*]]
+; CHECK:       N:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 32
+; CHECK-NEXT:    br i1 [[CMP]], label [[IF_THEN]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i8 [[C:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i8 99, label [[IF_THEN]]
+; CHECK-NEXT:    i8 97, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    [[A:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ 42, [[SWITCH_EARLY_TEST]] ], [ 42, [[N]] ], [ 42, [[SWITCH_EARLY_TEST]] ]
+; CHECK-NEXT:    tail call void @foo1() #2
+; CHECK-NEXT:    ret i32 [[A]]
+; CHECK:       if.end:
+; CHECK-NEXT:    ret i32 0
+;
 entry:
   br i1 %C, label %N, label %if.then
 N:
@@ -229,17 +312,33 @@
 if.end:                                           ; preds = %entry
   ret i32 0
 
-; CHECK-LABEL: @test8(
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %if.end [
-; CHECK:     i8 99, label %if.then
-; CHECK:     i8 97, label %if.then
-; CHECK:   ]
-; CHECK:   %A = phi i32 [ 0, %entry ], [ 42, %switch.early.test ], [ 42, %N ], [ 42, %switch.early.test ]
 }
 
 ;; This is "Example 7" from http://blog.regehr.org/archives/320
 define i32 @test9(i8 zeroext %c) nounwind ssp noredzone {
+; CHECK-LABEL: @test9(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[C:%.*]], 33
+; CHECK-NEXT:    br i1 [[CMP]], label [[LOR_END:%.*]], label [[SWITCH_EARLY_TEST:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i8 [[C]], label [[LOR_RHS:%.*]] [
+; CHECK-NEXT:    i8 92, label [[LOR_END]]
+; CHECK-NEXT:    i8 62, label [[LOR_END]]
+; CHECK-NEXT:    i8 60, label [[LOR_END]]
+; CHECK-NEXT:    i8 59, label [[LOR_END]]
+; CHECK-NEXT:    i8 58, label [[LOR_END]]
+; CHECK-NEXT:    i8 46, label [[LOR_END]]
+; CHECK-NEXT:    i8 44, label [[LOR_END]]
+; CHECK-NEXT:    i8 34, label [[LOR_END]]
+; CHECK-NEXT:    i8 39, label [[LOR_END]]
+; CHECK-NEXT:    ]
+; CHECK:       lor.rhs:
+; CHECK-NEXT:    br label [[LOR_END]]
+; CHECK:       lor.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ true, [[SWITCH_EARLY_TEST]] ], [ false, [[LOR_RHS]] ], [ true, [[ENTRY:%.*]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ], [ true, [[SWITCH_EARLY_TEST]] ]
+; CHECK-NEXT:    [[CONV46:%.*]] = zext i1 [[TMP0]] to i32
+; CHECK-NEXT:    ret i32 [[CONV46]]
+;
 entry:
   %cmp = icmp ult i8 %c, 33
   br i1 %cmp, label %lor.end, label %lor.lhs.false
@@ -285,25 +384,23 @@
   %conv46 = zext i1 %0 to i32
   ret i32 %conv46
 
-; CHECK-LABEL: @test9(
-; CHECK:   %cmp = icmp ult i8 %c, 33
-; CHECK:   br i1 %cmp, label %lor.end, label %switch.early.test
-
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %lor.rhs [
-; CHECK:     i8 92, label %lor.end
-; CHECK:     i8 62, label %lor.end
-; CHECK:     i8 60, label %lor.end
-; CHECK:     i8 59, label %lor.end
-; CHECK:     i8 58, label %lor.end
-; CHECK:     i8 46, label %lor.end
-; CHECK:     i8 44, label %lor.end
-; CHECK:     i8 34, label %lor.end
-; CHECK:     i8 39, label %lor.end
-; CHECK:   ]
+
 }
 
 define i32 @test10(i32 %mode, i1 %Cond) {
+; CHECK-LABEL: @test10(
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[SWITCH_EARLY_TEST:%.*]], label [[F:%.*]]
+; CHECK:       switch.early.test:
+; CHECK-NEXT:    switch i32 [[MODE:%.*]], label [[T:%.*]] [
+; CHECK-NEXT:    i32 51, label [[F]]
+; CHECK-NEXT:    i32 0, label [[F]]
+; CHECK-NEXT:    ]
+; CHECK:       T:
+; CHECK-NEXT:    [[MERGE:%.*]] = phi i32 [ 123, [[SWITCH_EARLY_TEST]] ], [ 324, [[F]] ]
+; CHECK-NEXT:    ret i32 [[MERGE]]
+; CHECK:       F:
+; CHECK-NEXT:    br label [[T]]
+;
   %A = icmp ne i32 %mode, 0
   %B = icmp ne i32 %mode, 51
   %C = and i1 %A, %B
@@ -314,17 +411,27 @@
 F:
   ret i32 324
 
-; CHECK-LABEL: @test10(
-; CHECK:  br i1 %Cond, label %switch.early.test, label %F
-; CHECK:switch.early.test:
-; CHECK:  switch i32 %mode, label %T [
-; CHECK:    i32 51, label %F
-; CHECK:    i32 0, label %F
-; CHECK:  ]
 }
 
 ; PR8780
 define i32 @test11(i32 %bar) nounwind {
+; CHECK-LABEL: @test11(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[BAR:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 55, label [[RETURN:%.*]]
+; CHECK-NEXT:    i32 53, label [[RETURN]]
+; CHECK-NEXT:    i32 35, label [[RETURN]]
+; CHECK-NEXT:    i32 24, label [[RETURN]]
+; CHECK-NEXT:    i32 23, label [[RETURN]]
+; CHECK-NEXT:    i32 12, label [[RETURN]]
+; CHECK-NEXT:    i32 4, label [[RETURN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.end:
+; CHECK-NEXT:    br label [[RETURN]]
+; CHECK:       return:
+; CHECK-NEXT:    [[RETVAL_0:%.*]] = phi i32 [ 0, [[IF_END]] ], [ 1, [[ENTRY:%.*]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ], [ 1, [[ENTRY]] ]
+; CHECK-NEXT:    ret i32 [[RETVAL_0]]
+;
 entry:
   %cmp = icmp eq i32 %bar, 4
   %cmp2 = icmp eq i32 %bar, 35
@@ -353,19 +460,21 @@
   %retval.0 = phi i32 [ 1, %if.then ], [ 0, %if.end ]
   ret i32 %retval.0
 
-; CHECK-LABEL: @test11(
-; CHECK: switch i32 %bar, label %if.end [
-; CHECK:   i32 55, label %return
-; CHECK:   i32 53, label %return
-; CHECK:   i32 35, label %return
-; CHECK:   i32 24, label %return
-; CHECK:   i32 23, label %return
-; CHECK:   i32 12, label %return
-; CHECK:   i32 4, label %return
-; CHECK: ]
 }
 
 define void @test12() nounwind {
+; CHECK-LABEL: @test12(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A_OLD:%.*]] = icmp eq i32 undef, undef
+; CHECK-NEXT:    br i1 [[A_OLD]], label [[BB55_US_US:%.*]], label [[MALFORMED:%.*]]
+; CHECK:       bb55.us.us:
+; CHECK-NEXT:    [[B:%.*]] = icmp ugt i32 undef, undef
+; CHECK-NEXT:    [[A:%.*]] = icmp eq i32 undef, undef
+; CHECK-NEXT:    [[OR_COND:%.*]] = or i1 [[B]], [[A]]
+; CHECK-NEXT:    br i1 [[OR_COND]], label [[BB55_US_US]], label [[MALFORMED]]
+; CHECK:       malformed:
+; CHECK-NEXT:    ret void
+;
 entry:
   br label %bb49.us.us
 
@@ -382,12 +491,26 @@
 
 malformed:
   ret void
-; CHECK-LABEL: @test12(
 
 }
 
 ; test13 - handle switch formation with ult.
 define void @test13(i32 %x) nounwind ssp noredzone {
+; CHECK-LABEL: @test13(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[X:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 6, label [[IF_THEN:%.*]]
+; CHECK-NEXT:    i32 4, label [[IF_THEN]]
+; CHECK-NEXT:    i32 3, label [[IF_THEN]]
+; CHECK-NEXT:    i32 1, label [[IF_THEN]]
+; CHECK-NEXT:    i32 0, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    call void @foo1() #3
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       if.end:
+; CHECK-NEXT:    ret void
+;
 entry:
   %cmp = icmp ult i32 %x, 2
   br i1 %cmp, label %if.then, label %lor.lhs.false3
@@ -410,18 +533,26 @@
 
 if.end:                                           ; preds = %if.then, %lor.lhs.false9
   ret void
-; CHECK-LABEL: @test13(
-; CHECK:  switch i32 %x, label %if.end [
-; CHECK:     i32 6, label %if.then
-; CHECK:     i32 4, label %if.then
-; CHECK:     i32 3, label %if.then
-; CHECK:     i32 1, label %if.then
-; CHECK:     i32 0, label %if.then
-; CHECK:   ]
 }
 
 ; test14 - handle switch formation with ult.
 define void @test14(i32 %x) nounwind ssp noredzone {
+; CHECK-LABEL: @test14(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    switch i32 [[X:%.*]], label [[IF_END:%.*]] [
+; CHECK-NEXT:    i32 6, label [[IF_THEN:%.*]]
+; CHECK-NEXT:    i32 4, label [[IF_THEN]]
+; CHECK-NEXT:    i32 3, label [[IF_THEN]]
+; CHECK-NEXT:    i32 2, label [[IF_THEN]]
+; CHECK-NEXT:    i32 1, label [[IF_THEN]]
+; CHECK-NEXT:    i32 0, label [[IF_THEN]]
+; CHECK-NEXT:    ]
+; CHECK:       if.then:
+; CHECK-NEXT:    call void @foo1() #3
+; CHECK-NEXT:    br label [[IF_END]]
+; CHECK:       if.end:
+; CHECK-NEXT:    ret void
+;
 entry:
   %cmp = icmp ugt i32 %x, 2
   br i1 %cmp, label %lor.lhs.false3, label %if.then
@@ -444,18 +575,15 @@
 
 if.end:                                           ; preds = %if.then, %lor.lhs.false9
   ret void
-; CHECK-LABEL: @test14(
-; CHECK:  switch i32 %x, label %if.end [
-; CHECK:     i32 6, label %if.then
-; CHECK:     i32 4, label %if.then
-; CHECK:     i32 3, label %if.then
-; CHECK:     i32 1, label %if.then
-; CHECK:     i32 0, label %if.then
-; CHECK:   ]
 }
 
 ; Don't crash on ginormous ranges.
 define void @test15(i128 %x) nounwind {
+; CHECK-LABEL: @test15(
+; CHECK-NEXT:  if.end:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i128 [[X:%.*]], 2
+; CHECK-NEXT:    ret void
+;
   %cmp = icmp ugt i128 %x, 2
   br i1 %cmp, label %if.end, label %lor.false
 
@@ -470,18 +598,19 @@
 if.end:
   ret void
 
-; CHECK-LABEL: @test15(
-; CHECK-NOT: switch
-; CHECK: ret void
 }
 
 ; PR8675
 ; rdar://5134905
 define zeroext i1 @test16(i32 %x) nounwind {
-entry:
 ; CHECK-LABEL: @test16(
-; CHECK: %x.off = add i32 %x, -1
-; CHECK: %switch = icmp ult i32 %x.off, 3
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[X_OFF:%.*]] = add i32 [[X:%.*]], -1
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[X_OFF]], 3
+; CHECK-NEXT:    [[SPEC_SELECT:%.*]] = select i1 [[SWITCH]], i1 true, i1 false
+; CHECK-NEXT:    ret i1 [[SPEC_SELECT]]
+;
+entry:
   %cmp.i = icmp eq i32 %x, 1
   br i1 %cmp.i, label %lor.end, label %lor.lhs.false
 
@@ -500,6 +629,17 @@
 
 ; Check that we don't turn an icmp into a switch where it's not useful.
 define void @test17(i32 %x, i32 %y) {
+; CHECK-LABEL: @test17(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 3
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[Y:%.*]], 2
+; CHECK-NEXT:    [[OR_COND775:%.*]] = or i1 [[CMP]], [[SWITCH]]
+; CHECK-NEXT:    br i1 [[OR_COND775]], label [[LOR_LHS_FALSE8:%.*]], label [[RETURN:%.*]]
+; CHECK:       lor.lhs.false8:
+; CHECK-NEXT:    tail call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
   %cmp = icmp ult i32 %x, 3
   %switch = icmp ult i32 %y, 2
   %or.cond775 = or i1 %cmp, %switch
@@ -512,13 +652,20 @@
 return:
   ret void
 
-; CHECK-LABEL: @test17(
-; CHECK-NOT: switch.early.test
-; CHECK-NOT: switch i32
-; CHECK: ret void
 }
 
 define void @test18(i32 %arg) {
+; CHECK-LABEL: @test18(
+; CHECK-NEXT:  bb:
+; CHECK-NEXT:    [[ARG_OFF:%.*]] = add i32 [[ARG:%.*]], -8
+; CHECK-NEXT:    [[SWITCH:%.*]] = icmp ult i32 [[ARG_OFF]], 11
+; CHECK-NEXT:    br i1 [[SWITCH]], label [[BB19:%.*]], label [[BB20:%.*]]
+; CHECK:       bb19:
+; CHECK-NEXT:    tail call void @foo1()
+; CHECK-NEXT:    br label [[BB20]]
+; CHECK:       bb20:
+; CHECK-NEXT:    ret void
+;
 bb:
   %tmp = and i32 %arg, -2
   %tmp1 = icmp eq i32 %tmp, 8
@@ -550,12 +697,23 @@
 bb20:                                             ; preds = %bb19, %bb8
   ret void
 
-; CHECK-LABEL: @test18(
-; CHECK: %arg.off = add i32 %arg, -8
-; CHECK: icmp ult i32 %arg.off, 11
 }
 
 define void @PR26323(i1 %tobool23, i32 %tmp3) {
+; CHECK-LABEL: @PR26323(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TOBOOL5:%.*]] = icmp ne i32 [[TMP3:%.*]], 0
+; CHECK-NEXT:    [[NEG14:%.*]] = and i32 [[TMP3]], -2
+; CHECK-NEXT:    [[CMP17:%.*]] = icmp ne i32 [[NEG14]], -1
+; CHECK-NEXT:    [[OR_COND:%.*]] = and i1 [[TOBOOL5]], [[TOBOOL23:%.*]]
+; CHECK-NEXT:    [[OR_COND1:%.*]] = and i1 [[CMP17]], [[OR_COND]]
+; CHECK-NEXT:    br i1 [[OR_COND1]], label [[IF_END29:%.*]], label [[IF_THEN27:%.*]]
+; CHECK:       if.then27:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    unreachable
+; CHECK:       if.end29:
+; CHECK-NEXT:    ret void
+;
 entry:
   %tobool5 = icmp ne i32 %tmp3, 0
   %neg14 = and i32 %tmp3, -2
@@ -587,6 +745,18 @@
 ; CHECK: i32 13, label %if
 ; CHECK: i32 12, label %if
 define void @test19(i32 %arg) {
+; CHECK-LABEL: @test19(
+; CHECK-NEXT:    switch i32 [[ARG:%.*]], label [[ELSE:%.*]] [
+; CHECK-NEXT:    i32 32, label [[IF:%.*]]
+; CHECK-NEXT:    i32 13, label [[IF]]
+; CHECK-NEXT:    i32 12, label [[IF]]
+; CHECK-NEXT:    ]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = and i32 %arg, -2
   %cmp1 = icmp eq i32 %and, 12
   %cmp2 = icmp eq i32 %arg, 32
@@ -606,6 +776,18 @@
 ; CHECK-NOT: switch
 ; CHECK: ret void
 define void @test20(i32 %arg) {
+; CHECK-LABEL: @test20(
+; CHECK-NEXT:    [[AND:%.*]] = and i32 [[ARG:%.*]], -2
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq i32 [[AND]], 13
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp eq i32 [[ARG]], 32
+; CHECK-NEXT:    [[PRED:%.*]] = or i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[PRED]], label [[IF:%.*]], label [[ELSE:%.*]]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = and i32 %arg, -2
   %cmp1 = icmp eq i32 %and, 13
   %cmp2 = icmp eq i32 %arg, 32
@@ -626,6 +808,18 @@
 ; CHECK: i32 13, label %else
 ; CHECK: i32 12, label %else
 define void @test21(i32 %arg) {
+; CHECK-LABEL: @test21(
+; CHECK-NEXT:    switch i32 [[ARG:%.*]], label [[IF:%.*]] [
+; CHECK-NEXT:    i32 32, label [[ELSE:%.*]]
+; CHECK-NEXT:    i32 13, label [[ELSE]]
+; CHECK-NEXT:    i32 12, label [[ELSE]]
+; CHECK-NEXT:    ]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = or i32 %arg, 1
   %cmp1 = icmp ne i32 %and, 13
   %cmp2 = icmp ne i32 %arg, 32
@@ -645,6 +839,18 @@
 ; CHECK-NOT: switch
 ; CHECK: ret void
 define void @test22(i32 %arg) {
+; CHECK-LABEL: @test22(
+; CHECK-NEXT:    [[AND:%.*]] = or i32 [[ARG:%.*]], 1
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp ne i32 [[AND]], 12
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp ne i32 [[ARG]], 32
+; CHECK-NEXT:    [[PRED:%.*]] = and i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[PRED]], label [[IF:%.*]], label [[ELSE:%.*]]
+; CHECK:       if:
+; CHECK-NEXT:    call void @foo1()
+; CHECK-NEXT:    ret void
+; CHECK:       else:
+; CHECK-NEXT:    ret void
+;
   %and = or i32 %arg, 1
   %cmp1 = icmp ne i32 %and, 12
   %cmp2 = icmp ne i32 %arg, 32
@@ -657,4 +863,4 @@
 
 else:
   ret void
-}
\ No newline at end of file
+}