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Differential D24480 Diff 71070 test/Transforms/InstCombine/icmp-div-constant.ll

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test/Transforms/InstCombine/icmp-div-constant.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s ; RUN: opt < %s -instcombine -S | FileCheck %s
; PR30281 - https://llvm.org/bugs/show_bug.cgi?id=30281 ; PR30281 - https://llvm.org/bugs/show_bug.cgi?id=30281
; All of these tests contain foldable division-by-constant instructions, but we ; All of these tests contain foldable division-by-constant instructions, but we
; can't assert that those folds have occurred before we process the later icmp. ; can't assert that those folds have occurred before we process the later icmp.
define i32 @icmp_div(i16 %a, i16 %c) { define i32 @icmp_div(i16 %a, i16 %c) {
; CHECK-LABEL: @icmp_div( ; CHECK-LABEL: @icmp_div(
; CHECK-NEXT: entry: ; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i16 %a, 0 ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i16 %a, 0
; CHECK-NEXT: br i1 [[TOBOOL]], label %then, label %exit ; CHECK-NEXT: br i1 [[TOBOOL]], label %then, label %exit
; CHECK: then: ; CHECK: then:
; CHECK-NEXT: [[NOT_CMP:%.*]] = icmp eq i16 %c, 0 ; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i16 %c, 0
; CHECK-NEXT: [[PHITMP1:%.*]] = sext i1 [[NOT_CMP]] to i32 ; CHECK-NEXT: [[PHITMP1:%.*]] = sext i1 [[TMP0]] to i32
; CHECK-NEXT: br label %exit ; CHECK-NEXT: br label %exit
; CHECK: exit: ; CHECK: exit:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHITMP1]], %then ] ; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHITMP1]], %then ]
; CHECK-NEXT: ret i32 [[PHI]] ; CHECK-NEXT: ret i32 [[PHI]]
; ;
entry: entry:
%tobool = icmp eq i16 %a, 0 %tobool = icmp eq i16 %a, 0
br i1 %tobool, label %then, label %exit br i1 %tobool, label %then, label %exit
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} }
define i32 @icmp_div3(i16 %a, i16 %c) { define i32 @icmp_div3(i16 %a, i16 %c) {
; CHECK-LABEL: @icmp_div3( ; CHECK-LABEL: @icmp_div3(
; CHECK-NEXT: entry: ; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i16 %a, 0 ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i16 %a, 0
; CHECK-NEXT: br i1 [[TOBOOL]], label %then, label %exit ; CHECK-NEXT: br i1 [[TOBOOL]], label %then, label %exit
; CHECK: then: ; CHECK: then:
; CHECK-NEXT: [[NOT_CMP:%.*]] = icmp eq i16 %c, 0 ; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i16 %c, 0
; CHECK-NEXT: [[PHITMP1:%.*]] = sext i1 [[NOT_CMP]] to i32 ; CHECK-NEXT: [[PHITMP1:%.*]] = sext i1 [[TMP0]] to i32
; CHECK-NEXT: br label %exit ; CHECK-NEXT: br label %exit
; CHECK: exit: ; CHECK: exit:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHITMP1]], %then ] ; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHITMP1]], %then ]
; CHECK-NEXT: ret i32 [[PHI]] ; CHECK-NEXT: ret i32 [[PHI]]
; ;
entry: entry:
%tobool = icmp eq i16 %a, 0 %tobool = icmp eq i16 %a, 0
br i1 %tobool, label %then, label %exit br i1 %tobool, label %then, label %exit
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