[NFC][IRCE] Regenerate test checks

llvm/test/Transforms/IRCE/pre_post_loops.ll

+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes=irce -S < %s 2>&1 | FileCheck %s
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
 
 ; CHECK: irce: in function test_01: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_02: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 
 ; Iterate from 0 to SINT_MAX, check that the post-loop is generated.
 define void @test_01(ptr %arr, ptr %a_len_ptr) {
-
-; CHECK:       test_01(
-; CHECK:       entry:
-; CHECK-NEXT:    %exit.mainloop.at = load i32, ptr %a_len_ptr
+; CHECK-LABEL: define void @test_01
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0:![0-9]+]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
 ; CHECK:       loop:
-; CHECK-NEXT:    %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:    %idx.next = add i32 %idx, 1
-; CHECK-NEXT:    %abc = icmp slt i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:    br i1 true, label %in.bounds,
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp slt i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
 ; CHECK:       in.bounds:
-; CHECK-NEXT:    %addr = getelementptr i32, ptr %arr, i32 %idx
-; CHECK-NEXT:    store i32 0, ptr %addr
-; CHECK-NEXT:    %next = icmp slt i32 %idx.next, 2147483647
-; CHECK-NEXT:    [[COND:%[^ ]+]] = icmp slt i32 %idx.next, %exit.mainloop.at
-; CHECK-NEXT:    br i1 [[COND]], label %loop, label %main.exit.selector
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp slt i32 [[IDX_NEXT]], 2147483647
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp slt i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp slt i32 [[IDX_NEXT_LCSSA]], 2147483647
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
 ; CHECK:       main.pseudo.exit:
-; CHECK-NEXT:    %idx.copy = phi i32 [ 0, %entry ], [ %idx.next.lcssa, %main.exit.selector ]
-; CHECK-NEXT:    %indvar.end = phi i32 [ 0, %entry ], [ %idx.next.lcssa, %main.exit.selector ]
-; CHECK-NEXT:    br label %postloop
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
 ; CHECK:       postloop:
-; CHECK-NEXT:    br label %loop.postloop
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
 ; CHECK:       loop.postloop:
-; CHECK-NEXT:    %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:    %idx.next.postloop = add i32 %idx.postloop, 1
-; CHECK-NEXT:    %abc.postloop = icmp slt i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:    br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp slt i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
 ; CHECK:       in.bounds.postloop:
-; CHECK-NEXT:    %addr.postloop = getelementptr i32, ptr %arr, i32 %idx.postloop
-; CHECK-NEXT:    store i32 0, ptr %addr.postloop
-; CHECK-NEXT:    %next.postloop = icmp slt i32 %idx.next.postloop, 2147483647
-; CHECK-NEXT:    br i1 %next.postloop, label %loop.postloop, label %exit.loopexit
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp slt i32 [[IDX_NEXT_POSTLOOP]], 2147483647
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP1:![0-9]+]], !irce.loop.clone [[META6:![0-9]+]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Iterate from SINT_MAX to 0, check that the pre-loop is generated.
 define void @test_02(ptr %arr, ptr %a_len_ptr) {
-
-; CHECK:      test_02(
-; CHECK:      entry:
-; CHECK-NEXT:   %len = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:    br i1 true, label %loop.preloop.preheader
-; CHECK:      mainloop:
-; CHECK-NEXT:   br label %loop
-; CHECK:      loop:
-; CHECK-NEXT:   %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
-; CHECK-NEXT:   %idx.next = add i32 %idx, -1
-; CHECK-NEXT:   %abc = icmp slt i32 %idx, %len
-; CHECK-NEXT:   br i1 true, label %in.bounds
-; CHECK:      in.bounds:
-; CHECK-NEXT:   %addr = getelementptr i32, ptr %arr, i32 %idx
-; CHECK-NEXT:   store i32 0, ptr %addr
-; CHECK-NEXT:   %next = icmp sgt i32 %idx.next, -1
-; CHECK-NEXT:   br i1 %next, label %loop, label %exit.loopexit
-; CHECK:      loop.preloop:
-; CHECK-NEXT:   %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ 2147483647, %loop.preloop.preheader ]
-; CHECK-NEXT:   %idx.next.preloop = add i32 %idx.preloop, -1
-; CHECK-NEXT:   %abc.preloop = icmp slt i32 %idx.preloop, %len
-; CHECK-NEXT:   br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
-; CHECK:      in.bounds.preloop:
-; CHECK-NEXT:   %addr.preloop = getelementptr i32, ptr %arr, i32 %idx.preloop
-; CHECK-NEXT:   store i32 0, ptr %addr.preloop
-; CHECK-NEXT:   %next.preloop = icmp sgt i32 %idx.next.preloop, -1
-; CHECK-NEXT:   [[COND:%[^ ]+]] = icmp sgt i32 %idx.next.preloop, -1
-; CHECK-NEXT:   br i1 [[COND]], label %loop.preloop, label %preloop.exit.selector
+; CHECK-LABEL: define void @test_02
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    br i1 true, label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preloop.preheader:
+; CHECK-NEXT:    br label [[LOOP_PRELOOP:%.*]]
+; CHECK:       mainloop:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp slt i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp sgt i32 [[IDX_NEXT]], -1
+; CHECK-NEXT:    br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       loop.preloop:
+; CHECK-NEXT:    [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ 2147483647, [[LOOP_PRELOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP]] = add i32 [[IDX_PRELOOP]], -1
+; CHECK-NEXT:    [[ABC_PRELOOP:%.*]] = icmp slt i32 [[IDX_PRELOOP]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.preloop:
+; CHECK-NEXT:    [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_PRELOOP]], align 4
+; CHECK-NEXT:    [[NEXT_PRELOOP:%.*]] = icmp sgt i32 [[IDX_NEXT_PRELOOP]], -1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp sgt i32 [[IDX_NEXT_PRELOOP]], -1
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP7:![0-9]+]], !irce.loop.clone [[META6]]
+; CHECK:       preloop.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ]
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt i32 [[IDX_NEXT_PRELOOP_LCSSA]], -1
+; CHECK-NEXT:    br i1 [[TMP1]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       preloop.pseudo.exit:
+; CHECK-NEXT:    [[IDX_PRELOOP_COPY]] = phi i32 [ 2147483647, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 2147483647, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[MAINLOOP]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 2147483647, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, -1

 out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 !0 = !{i32 0, i32 50}
+;.
+; CHECK: [[RNG0]] = !{i32 0, i32 50}
+; CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[META2:![0-9]+]], [[META3:![0-9]+]], [[META4:![0-9]+]], [[META5:![0-9]+]]}
+; CHECK: [[META2]] = !{!"llvm.loop.unroll.disable"}
+; CHECK: [[META3]] = !{!"llvm.loop.vectorize.enable", i1 false}
+; CHECK: [[META4]] = !{!"llvm.loop.licm_versioning.disable"}
+; CHECK: [[META5]] = !{!"llvm.loop.distribute.enable", i1 false}
+; CHECK: [[META6]] = !{}
+; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META2]], [[META3]], [[META4]], [[META5]]}
+;.

llvm/test/Transforms/IRCE/range_intersect_miscompile.ll

+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes=irce -S < %s 2>&1 | FileCheck %s
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
 
 ; CHECK-LABEL: irce: in function test_01: constrained Loop at depth 1 containing:
 ; CHECK-LABEL: irce: in function test_02: constrained Loop at depth 1 containing:
 ; CHECK-LABEL: irce: in function test_03: constrained Loop at depth 1 containing:
 ; CHECK-LABEL: irce: in function test_04: constrained Loop at depth 1 containing:
 ; CHECK-LABEL: irce: in function test_05: constrained Loop at depth 1 containing:
 
 ; This test used to demonstrate a miscompile: the outer loop's IV iterates in
 ; range of [2, 400) and the range check is done against value 331. Due to a bug
 ; in range intersection IRCE manages to eliminate the range check without
 ; inserting a postloop, which is incorrect. We treat the range of this test as
 ; an unsigned range and are able to intersect ranges correctly and insert a
 ; postloop.
 
 define void @test_01() {
-
-; CHECK-LABEL: test_01
-; CHECK-NOT:     preloop
-; CHECK:         range_check_block:                                ; preds = %inner_loop
-; CHECK-NEXT:      %range_check = icmp slt i32 %iv, 331
-; CHECK-NEXT:      br i1 true, label %loop_latch
-; CHECK:         loop_latch:
-; CHECK-NEXT:      %iv_next = add i32 %iv, 1
-; CHECK-NEXT:      %loop_cond = icmp ult i32 %iv_next, 400
-; CHECK-NEXT:      [[COND:%[^ ]+]] = icmp ult i32 %iv_next, 331
-; CHECK-NEXT:      br i1 [[COND]], label %loop_header, label %main.exit.selector
-; CHECK:         main.exit.selector:                               ; preds = %loop_latch
-; CHECK-NEXT:      %iv_next.lcssa = phi i32 [ %iv_next, %loop_latch ]
-; CHECK-NEXT:      %iv.lcssa = phi i32 [ %iv, %loop_latch ]
-; CHECK-NEXT:      [[MES_COND:%[^ ]+]] = icmp ult i32 %iv_next.lcssa, 400
-; CHECK-NEXT:      br i1 [[MES_COND]], label %main.pseudo.exit, label %exit
-; CHECK:         loop_latch.postloop:                              ; preds = %range_check_block.postloop
-; CHECK-NEXT:      %iv_next.postloop = add i32 %iv.postloop, 1
-; CHECK-NEXT:      %loop_cond.postloop = icmp ult i32 %iv_next.postloop, 400
-; CHECK-NEXT:      br i1 %loop_cond.postloop, label %loop_header.postloop, label %exit.loopexit
+; CHECK-LABEL: define void @test_01() {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 true, label [[LOOP_HEADER_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop_header.preheader:
+; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
+; CHECK:       loop_header:
+; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 2, [[LOOP_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    [[IV_PREV:%.*]] = phi i32 [ [[IV]], [[LOOP_LATCH]] ], [ 1, [[LOOP_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[IV_PREV]], -1
+; CHECK-NEXT:    br i1 true, label [[LOOP_HEADER_SPLIT_US:%.*]], label [[EXIT_LOOPEXIT1:%.*]]
+; CHECK:       loop_header.split.us:
+; CHECK-NEXT:    br label [[INNER_LOOP:%.*]]
+; CHECK:       inner_loop:
+; CHECK-NEXT:    [[INNER_IV:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER_LOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i32 [[INNER_IV]], 1
+; CHECK-NEXT:    [[INNER_COND:%.*]] = icmp ult i32 [[INNER_IV_NEXT]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND]], label [[INNER_LOOP]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit.loopexit1:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       range_check_block:
+; CHECK-NEXT:    [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV]], 331
+; CHECK-NEXT:    br i1 true, label [[LOOP_LATCH]], label [[DEOPT_LOOPEXIT2:%.*]]
+; CHECK:       loop_latch:
+; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[IV_NEXT]], 400
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 [[IV_NEXT]], 331
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_HEADER]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IV_NEXT_LCSSA:%.*]] = phi i32 [ [[IV_NEXT]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[IV_LCSSA:%.*]] = phi i32 [ [[IV]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IV_NEXT_LCSSA]], 400
+; CHECK-NEXT:    br i1 [[TMP1]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ 2, [[ENTRY:%.*]] ], [ [[IV_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[IV_PREV_COPY:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ [[IV_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 2, [[ENTRY]] ], [ [[IV_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       deopt.loopexit:
+; CHECK-NEXT:    br label [[DEOPT:%.*]]
+; CHECK:       deopt.loopexit2:
+; CHECK-NEXT:    br label [[DEOPT]]
+; CHECK:       deopt:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_HEADER_POSTLOOP:%.*]]
+; CHECK:       loop_header.postloop:
+; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[IV_COPY]], [[POSTLOOP]] ], [ [[IV_NEXT_POSTLOOP:%.*]], [[LOOP_LATCH_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IV_PREV_POSTLOOP:%.*]] = phi i32 [ [[IV_PREV_COPY]], [[POSTLOOP]] ], [ [[IV_POSTLOOP]], [[LOOP_LATCH_POSTLOOP]] ]
+; CHECK-NEXT:    [[TMP2_POSTLOOP:%.*]] = icmp sgt i32 [[IV_PREV_POSTLOOP]], -1
+; CHECK-NEXT:    br i1 [[TMP2_POSTLOOP]], label [[LOOP_HEADER_SPLIT_US_POSTLOOP:%.*]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       loop_header.split.us.postloop:
+; CHECK-NEXT:    br label [[INNER_LOOP_POSTLOOP:%.*]]
+; CHECK:       inner_loop.postloop:
+; CHECK-NEXT:    [[INNER_IV_POSTLOOP:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US_POSTLOOP]] ], [ [[INNER_IV_NEXT_POSTLOOP:%.*]], [[INNER_LOOP_POSTLOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT_POSTLOOP]] = add nuw nsw i32 [[INNER_IV_POSTLOOP]], 1
+; CHECK-NEXT:    [[INNER_COND_POSTLOOP:%.*]] = icmp ult i32 [[INNER_IV_NEXT_POSTLOOP]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND_POSTLOOP]], label [[INNER_LOOP_POSTLOOP]], label [[RANGE_CHECK_BLOCK_POSTLOOP:%.*]]
+; CHECK:       range_check_block.postloop:
+; CHECK-NEXT:    [[RANGE_CHECK_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], 331
+; CHECK-NEXT:    br i1 [[RANGE_CHECK_POSTLOOP]], label [[LOOP_LATCH_POSTLOOP]], label [[DEOPT_LOOPEXIT:%.*]]
+; CHECK:       loop_latch.postloop:
+; CHECK-NEXT:    [[IV_NEXT_POSTLOOP]] = add i32 [[IV_POSTLOOP]], 1
+; CHECK-NEXT:    [[LOOP_COND_POSTLOOP:%.*]] = icmp ult i32 [[IV_NEXT_POSTLOOP]], 400
+; CHECK-NEXT:    br i1 [[LOOP_COND_POSTLOOP]], label [[LOOP_HEADER_POSTLOOP]], label [[EXIT_LOOPEXIT]], !llvm.loop [[LOOP0:![0-9]+]], !irce.loop.clone [[META5:![0-9]+]]
+;
 
 entry:
   br label %loop_header
 
 loop_header:                            ; preds = %loop_latch, %entry
   %iv = phi i32 [ 2, %entry ], [ %iv_next, %loop_latch ]
   %iv.prev = phi i32 [ 1, %entry ], [ %iv, %loop_latch ]
   %tmp2 = icmp sgt i32 %iv.prev, -1

 deopt:                                          ; preds = %range_check_block
   ret void
 }
 
 ; Similar to test_01, but here the range check is done against 450. No postloop
 ; is required.
 
 define void @test_02() {
-
-; CHECK-LABEL: test_02
-; CHECK-NOT:     preloop
-; CHECK-NOT:     postloop
-; CHECK:         range_check_block:                                ; preds = %inner_loop
-; CHECK-NEXT:      %range_check = icmp slt i32 %iv, 450
-; CHECK-NEXT:      br i1 true, label %loop_latch
-; CHECK:         loop_latch:                                       ; preds = %range_check_block
-; CHECK-NEXT:      %iv_next = add i32 %iv, 1
-; CHECK-NEXT:      %loop_cond = icmp ult i32 %iv_next, 400
-; CHECK-NEXT:      br i1 %loop_cond, label %loop_header, label %exit
+; CHECK-LABEL: define void @test_02() {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
+; CHECK:       loop_header:
+; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 2, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
+; CHECK-NEXT:    [[IV_PREV:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ [[IV]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[IV_PREV]], -1
+; CHECK-NEXT:    br i1 true, label [[LOOP_HEADER_SPLIT_US:%.*]], label [[EXIT:%.*]]
+; CHECK:       loop_header.split.us:
+; CHECK-NEXT:    br label [[INNER_LOOP:%.*]]
+; CHECK:       inner_loop:
+; CHECK-NEXT:    [[INNER_IV:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER_LOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i32 [[INNER_IV]], 1
+; CHECK-NEXT:    [[INNER_COND:%.*]] = icmp ult i32 [[INNER_IV_NEXT]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND]], label [[INNER_LOOP]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       range_check_block:
+; CHECK-NEXT:    [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV]], 450
+; CHECK-NEXT:    br i1 true, label [[LOOP_LATCH]], label [[DEOPT:%.*]]
+; CHECK:       loop_latch:
+; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[IV_NEXT]], 400
+; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[LOOP_HEADER]], label [[EXIT]]
+; CHECK:       deopt:
+; CHECK-NEXT:    ret void
+;
 
 entry:
   br label %loop_header
 
 loop_header:                            ; preds = %loop_latch, %entry
   %iv = phi i32 [ 2, %entry ], [ %iv_next, %loop_latch ]
   %iv.prev = phi i32 [ 1, %entry ], [ %iv, %loop_latch ]
   %tmp2 = icmp sgt i32 %iv.prev, -1

 deopt:                                          ; preds = %range_check_block
   ret void
 }
 
 ; Range check is made against 0, so the safe iteration range is empty. IRCE
 ; should not apply to the inner loop. The condition %tmp2 can be eliminated.
 
 define void @test_03() {
-
-; CHECK-LABEL: test_03
-; CHECK-NOT:   preloop
-; CHECK-NOT:   postloop
-; CHECK:         %tmp2 = icmp sgt i32 %iv.prev, -1
-; CHECK-NEXT:    br i1 true, label %loop_header.split.us, label %exit
+; CHECK-LABEL: define void @test_03() {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
+; CHECK:       loop_header:
+; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 2, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
+; CHECK-NEXT:    [[IV_PREV:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ [[IV]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[IV_PREV]], -1
+; CHECK-NEXT:    br i1 true, label [[LOOP_HEADER_SPLIT_US:%.*]], label [[EXIT:%.*]]
+; CHECK:       loop_header.split.us:
+; CHECK-NEXT:    br label [[INNER_LOOP:%.*]]
+; CHECK:       inner_loop:
+; CHECK-NEXT:    [[INNER_IV:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER_LOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i32 [[INNER_IV]], 1
+; CHECK-NEXT:    [[INNER_COND:%.*]] = icmp ult i32 [[INNER_IV_NEXT]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND]], label [[INNER_LOOP]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
 ; CHECK:       range_check_block:
-; CHECK-NEXT:    %range_check = icmp slt i32 %iv, 0
-; CHECK-NEXT:    br i1 %range_check, label %loop_latch, label %deopt
+; CHECK-NEXT:    [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV]], 0
+; CHECK-NEXT:    br i1 [[RANGE_CHECK]], label [[LOOP_LATCH]], label [[DEOPT:%.*]]
+; CHECK:       loop_latch:
+; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[IV_NEXT]], 400
+; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[LOOP_HEADER]], label [[EXIT]]
+; CHECK:       deopt:
+; CHECK-NEXT:    ret void
+;
 
 entry:
   br label %loop_header
 
 loop_header:                            ; preds = %loop_latch, %entry
   %iv = phi i32 [ 2, %entry ], [ %iv_next, %loop_latch ]
   %iv.prev = phi i32 [ 1, %entry ], [ %iv, %loop_latch ]
   %tmp2 = icmp sgt i32 %iv.prev, -1

 deopt:                                          ; preds = %range_check_block
   ret void
 }
 
 ; We can also properly eliminate range check against %n which is not always
 ; known positive.
 
 define void @test_04(ptr %p) {
-
-; CHECK-LABEL: test_04
-; CHECK:       entry
-; CHECK-NOT:   preloop
-; CHECK:         %tmp2 = icmp sgt i32 %iv.prev, -1
-; CHECK-NEXT:    br i1 true, label %loop_header.split.us, label %exit
+; CHECK-LABEL: define void @test_04
+; CHECK-SAME: (ptr [[P:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[N:%.*]] = load i32, ptr [[P]], align 4
+; CHECK-NEXT:    [[SMIN:%.*]] = call i32 @llvm.smin.i32(i32 [[N]], i32 0)
+; CHECK-NEXT:    [[TMP0:%.*]] = sub i32 [[N]], [[SMIN]]
+; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[SMIN]], i32 -1)
+; CHECK-NEXT:    [[TMP1:%.*]] = add nsw i32 [[SMAX]], 1
+; CHECK-NEXT:    [[TMP2:%.*]] = mul i32 [[TMP0]], [[TMP1]]
+; CHECK-NEXT:    [[UMIN:%.*]] = call i32 @llvm.umin.i32(i32 [[TMP2]], i32 400)
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.umax.i32(i32 [[UMIN]], i32 2)
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp ult i32 2, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP3]], label [[LOOP_HEADER_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop_header.preheader:
+; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
+; CHECK:       loop_header:
+; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 2, [[LOOP_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    [[IV_PREV:%.*]] = phi i32 [ [[IV]], [[LOOP_LATCH]] ], [ 1, [[LOOP_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[IV_PREV]], -1
+; CHECK-NEXT:    br i1 true, label [[LOOP_HEADER_SPLIT_US:%.*]], label [[EXIT_LOOPEXIT1:%.*]]
+; CHECK:       loop_header.split.us:
+; CHECK-NEXT:    br label [[INNER_LOOP:%.*]]
+; CHECK:       inner_loop:
+; CHECK-NEXT:    [[INNER_IV:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER_LOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i32 [[INNER_IV]], 1
+; CHECK-NEXT:    [[INNER_COND:%.*]] = icmp ult i32 [[INNER_IV_NEXT]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND]], label [[INNER_LOOP]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit.loopexit1:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
 ; CHECK:       range_check_block:
-; CHECK-NEXT:    %range_check = icmp slt i32 %iv, %n
-; CHECK-NEXT:    br i1 true, label %loop_latch, label %deopt
+; CHECK-NEXT:    [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV]], [[N]]
+; CHECK-NEXT:    br i1 true, label [[LOOP_LATCH]], label [[DEOPT_LOOPEXIT2:%.*]]
+; CHECK:       loop_latch:
+; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[IV_NEXT]], 400
+; CHECK-NEXT:    [[TMP4:%.*]] = icmp ult i32 [[IV_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP4]], label [[LOOP_HEADER]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IV_NEXT_LCSSA:%.*]] = phi i32 [ [[IV_NEXT]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[IV_LCSSA:%.*]] = phi i32 [ [[IV]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[TMP5:%.*]] = icmp ult i32 [[IV_NEXT_LCSSA]], 400
+; CHECK-NEXT:    br i1 [[TMP5]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ 2, [[ENTRY:%.*]] ], [ [[IV_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[IV_PREV_COPY:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ [[IV_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 2, [[ENTRY]] ], [ [[IV_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       deopt.loopexit:
+; CHECK-NEXT:    br label [[DEOPT:%.*]]
+; CHECK:       deopt.loopexit2:
+; CHECK-NEXT:    br label [[DEOPT]]
+; CHECK:       deopt:
+; CHECK-NEXT:    ret void
 ; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_HEADER_POSTLOOP:%.*]]
+; CHECK:       loop_header.postloop:
+; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[IV_COPY]], [[POSTLOOP]] ], [ [[IV_NEXT_POSTLOOP:%.*]], [[LOOP_LATCH_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IV_PREV_POSTLOOP:%.*]] = phi i32 [ [[IV_PREV_COPY]], [[POSTLOOP]] ], [ [[IV_POSTLOOP]], [[LOOP_LATCH_POSTLOOP]] ]
+; CHECK-NEXT:    [[TMP2_POSTLOOP:%.*]] = icmp sgt i32 [[IV_PREV_POSTLOOP]], -1
+; CHECK-NEXT:    br i1 [[TMP2_POSTLOOP]], label [[LOOP_HEADER_SPLIT_US_POSTLOOP:%.*]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       loop_header.split.us.postloop:
+; CHECK-NEXT:    br label [[INNER_LOOP_POSTLOOP:%.*]]
+; CHECK:       inner_loop.postloop:
+; CHECK-NEXT:    [[INNER_IV_POSTLOOP:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US_POSTLOOP]] ], [ [[INNER_IV_NEXT_POSTLOOP:%.*]], [[INNER_LOOP_POSTLOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT_POSTLOOP]] = add nuw nsw i32 [[INNER_IV_POSTLOOP]], 1
+; CHECK-NEXT:    [[INNER_COND_POSTLOOP:%.*]] = icmp ult i32 [[INNER_IV_NEXT_POSTLOOP]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND_POSTLOOP]], label [[INNER_LOOP_POSTLOOP]], label [[RANGE_CHECK_BLOCK_POSTLOOP:%.*]]
+; CHECK:       range_check_block.postloop:
+; CHECK-NEXT:    [[RANGE_CHECK_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], [[N]]
+; CHECK-NEXT:    br i1 [[RANGE_CHECK_POSTLOOP]], label [[LOOP_LATCH_POSTLOOP]], label [[DEOPT_LOOPEXIT:%.*]]
+; CHECK:       loop_latch.postloop:
+; CHECK-NEXT:    [[IV_NEXT_POSTLOOP]] = add i32 [[IV_POSTLOOP]], 1
+; CHECK-NEXT:    [[LOOP_COND_POSTLOOP:%.*]] = icmp ult i32 [[IV_NEXT_POSTLOOP]], 400
+; CHECK-NEXT:    br i1 [[LOOP_COND_POSTLOOP]], label [[LOOP_HEADER_POSTLOOP]], label [[EXIT_LOOPEXIT]], !llvm.loop [[LOOP6:![0-9]+]], !irce.loop.clone [[META5]]
+;
 
 entry:
   %n = load i32, ptr %p
   br label %loop_header
 
 loop_header:                            ; preds = %loop_latch, %entry
   %iv = phi i32 [ 2, %entry ], [ %iv_next, %loop_latch ]
   %iv.prev = phi i32 [ 1, %entry ], [ %iv, %loop_latch ]

 deopt:                                          ; preds = %range_check_block
   ret void
 }
 
 ; Same as test_04, but range guarantees that %n is positive. So we can safely
 ; intersect ranges (with insertion of postloop).
 
 define void @test_05(ptr %p) {
-
-; CHECK-LABEL: test_05
-; CHECK-NOT:     preloop
-; CHECK:         entry:
-; CHECK-NEXT:      %n = load i32, ptr %p, align 4, !range !
-; CHECK-NEXT:      %exit.mainloop.at = call i32 @llvm.umax.i32(i32 %n, i32 2)
-; CHECK-NEXT:      [[CMP_2:%[^ ]+]] = icmp ult i32 2, %exit.mainloop.at
-; CHECK-NEXT:      br i1 [[CMP_2]], label %loop_header.preheader, label %main.pseudo.exit
-; CHECK:         range_check_block:                                ; preds = %inner_loop
-; CHECK-NEXT:      %range_check = icmp slt i32 %iv, %n
-; CHECK-NEXT:      br i1 true, label %loop_latch, label %deopt.loopexit2
-; CHECK:         loop_latch:                                       ; preds = %range_check_block
-; CHECK-NEXT:      %iv_next = add i32 %iv, 1
-; CHECK-NEXT:      %loop_cond = icmp ult i32 %iv_next, 400
-; CHECK-NEXT:      [[COND:%[^ ]+]] = icmp ult i32 %iv_next, %exit.mainloop.at
-; CHECK-NEXT:      br i1 [[COND]], label %loop_header, label %main.exit.selector
-; CHECK:         main.exit.selector:                               ; preds = %loop_latch
-; CHECK-NEXT:      %iv_next.lcssa = phi i32 [ %iv_next, %loop_latch ]
-; CHECK-NEXT:      %iv.lcssa = phi i32 [ %iv, %loop_latch ]
-; CHECK-NEXT:      [[MES_COND:%[^ ]+]] = icmp ult i32 %iv_next.lcssa, 400
-; CHECK-NEXT:      br i1 [[MES_COND]], label %main.pseudo.exit, label %exit
-; CHECK:         loop_latch.postloop:                              ; preds = %range_check_block.postloop
-; CHECK-NEXT:      %iv_next.postloop = add i32 %iv.postloop, 1
-; CHECK-NEXT:      %loop_cond.postloop = icmp ult i32 %iv_next.postloop, 400
-; CHECK-NEXT:      br i1 %loop_cond.postloop, label %loop_header.postloop, label %exit.loopexit
+; CHECK-LABEL: define void @test_05
+; CHECK-SAME: (ptr [[P:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[N:%.*]] = load i32, ptr [[P]], align 4, !range [[RNG7:![0-9]+]]
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.umax.i32(i32 [[N]], i32 2)
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 2, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_HEADER_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop_header.preheader:
+; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
+; CHECK:       loop_header:
+; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 2, [[LOOP_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    [[IV_PREV:%.*]] = phi i32 [ [[IV]], [[LOOP_LATCH]] ], [ 1, [[LOOP_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[IV_PREV]], -1
+; CHECK-NEXT:    br i1 true, label [[LOOP_HEADER_SPLIT_US:%.*]], label [[EXIT_LOOPEXIT1:%.*]]
+; CHECK:       loop_header.split.us:
+; CHECK-NEXT:    br label [[INNER_LOOP:%.*]]
+; CHECK:       inner_loop:
+; CHECK-NEXT:    [[INNER_IV:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER_LOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i32 [[INNER_IV]], 1
+; CHECK-NEXT:    [[INNER_COND:%.*]] = icmp ult i32 [[INNER_IV_NEXT]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND]], label [[INNER_LOOP]], label [[RANGE_CHECK_BLOCK:%.*]]
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit.loopexit1:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       range_check_block:
+; CHECK-NEXT:    [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV]], [[N]]
+; CHECK-NEXT:    br i1 true, label [[LOOP_LATCH]], label [[DEOPT_LOOPEXIT2:%.*]]
+; CHECK:       loop_latch:
+; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[IV_NEXT]], 400
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IV_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP_HEADER]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IV_NEXT_LCSSA:%.*]] = phi i32 [ [[IV_NEXT]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[IV_LCSSA:%.*]] = phi i32 [ [[IV]], [[LOOP_LATCH]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ult i32 [[IV_NEXT_LCSSA]], 400
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ 2, [[ENTRY:%.*]] ], [ [[IV_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[IV_PREV_COPY:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ [[IV_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 2, [[ENTRY]] ], [ [[IV_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       deopt.loopexit:
+; CHECK-NEXT:    br label [[DEOPT:%.*]]
+; CHECK:       deopt.loopexit2:
+; CHECK-NEXT:    br label [[DEOPT]]
+; CHECK:       deopt:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_HEADER_POSTLOOP:%.*]]
+; CHECK:       loop_header.postloop:
+; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[IV_COPY]], [[POSTLOOP]] ], [ [[IV_NEXT_POSTLOOP:%.*]], [[LOOP_LATCH_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IV_PREV_POSTLOOP:%.*]] = phi i32 [ [[IV_PREV_COPY]], [[POSTLOOP]] ], [ [[IV_POSTLOOP]], [[LOOP_LATCH_POSTLOOP]] ]
+; CHECK-NEXT:    [[TMP2_POSTLOOP:%.*]] = icmp sgt i32 [[IV_PREV_POSTLOOP]], -1
+; CHECK-NEXT:    br i1 [[TMP2_POSTLOOP]], label [[LOOP_HEADER_SPLIT_US_POSTLOOP:%.*]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       loop_header.split.us.postloop:
+; CHECK-NEXT:    br label [[INNER_LOOP_POSTLOOP:%.*]]
+; CHECK:       inner_loop.postloop:
+; CHECK-NEXT:    [[INNER_IV_POSTLOOP:%.*]] = phi i32 [ 1, [[LOOP_HEADER_SPLIT_US_POSTLOOP]] ], [ [[INNER_IV_NEXT_POSTLOOP:%.*]], [[INNER_LOOP_POSTLOOP]] ]
+; CHECK-NEXT:    [[INNER_IV_NEXT_POSTLOOP]] = add nuw nsw i32 [[INNER_IV_POSTLOOP]], 1
+; CHECK-NEXT:    [[INNER_COND_POSTLOOP:%.*]] = icmp ult i32 [[INNER_IV_NEXT_POSTLOOP]], 31
+; CHECK-NEXT:    br i1 [[INNER_COND_POSTLOOP]], label [[INNER_LOOP_POSTLOOP]], label [[RANGE_CHECK_BLOCK_POSTLOOP:%.*]]
+; CHECK:       range_check_block.postloop:
+; CHECK-NEXT:    [[RANGE_CHECK_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], [[N]]
+; CHECK-NEXT:    br i1 [[RANGE_CHECK_POSTLOOP]], label [[LOOP_LATCH_POSTLOOP]], label [[DEOPT_LOOPEXIT:%.*]]
+; CHECK:       loop_latch.postloop:
+; CHECK-NEXT:    [[IV_NEXT_POSTLOOP]] = add i32 [[IV_POSTLOOP]], 1
+; CHECK-NEXT:    [[LOOP_COND_POSTLOOP:%.*]] = icmp ult i32 [[IV_NEXT_POSTLOOP]], 400
+; CHECK-NEXT:    br i1 [[LOOP_COND_POSTLOOP]], label [[LOOP_HEADER_POSTLOOP]], label [[EXIT_LOOPEXIT]], !llvm.loop [[LOOP8:![0-9]+]], !irce.loop.clone [[META5]]
+;
 
 entry:
   %n = load i32, ptr %p, !range !0
   br label %loop_header
 
 loop_header:                            ; preds = %loop_latch, %entry
   %iv = phi i32 [ 2, %entry ], [ %iv_next, %loop_latch ]
   %iv.prev = phi i32 [ 1, %entry ], [ %iv, %loop_latch ]
loop_latch:                                         ; preds = %range_check_block
   %loop_cond = icmp ult i32 %iv_next, 400
   br i1 %loop_cond, label %loop_header, label %exit
 
 deopt:                                          ; preds = %range_check_block
   ret void
 }
 
 !0 = !{i32 0, i32 50}
+;.
+; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]], [[META3:![0-9]+]], [[META4:![0-9]+]]}
+; CHECK: [[META1]] = !{!"llvm.loop.unroll.disable"}
+; CHECK: [[META2]] = !{!"llvm.loop.vectorize.enable", i1 false}
+; CHECK: [[META3]] = !{!"llvm.loop.licm_versioning.disable"}
+; CHECK: [[META4]] = !{!"llvm.loop.distribute.enable", i1 false}
+; CHECK: [[META5]] = !{}
+; CHECK: [[LOOP6]] = distinct !{[[LOOP6]], [[META1]], [[META2]], [[META3]], [[META4]]}
+; CHECK: [[RNG7]] = !{i32 0, i32 50}
+; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META1]], [[META2]], [[META3]], [[META4]]}
+;.

llvm/test/Transforms/IRCE/unsigned_comparisons_ugt.ll

+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes=irce -S < %s 2>&1 | FileCheck %s
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
 
 ; CHECK: irce: in function test_01: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_02: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_03: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_04: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK-NOT: irce: in function test_05: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_06: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 
 ; UGT condition for increasing loop.
 define void @test_01(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_01(
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add nuw nsw i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_01
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0:![0-9]+]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ugt i32 [[IDX_NEXT]], 100
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    [[TMP2:%.*]] = xor i1 [[TMP1]], true
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_EXIT_SELECTOR:%.*]], label [[LOOP]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], 101
+; CHECK-NEXT:    br i1 [[TMP3]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add nuw nsw i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ugt i32 [[IDX_NEXT_POSTLOOP]], 100
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], label [[LOOP_POSTLOOP]], !llvm.loop [[LOOP1:![0-9]+]], !irce.loop.clone [[META6:![0-9]+]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; UGT condition for decreasing loop.
 define void @test_02(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_02(
-; CHECK:        entry:
-; CHECK-NEXT:     %len = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[UMIN:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %len, i32 1)
-; CHECK-NEXT:     %exit.preloop.at = add nsw i32 [[UMIN]], -1
-; CHECK-NEXT:     [[COND2:%[^ ]+]] = icmp ugt i32 100, %exit.preloop.at
-; CHECK-NEXT:     br i1 [[COND2]], label %loop.preloop.preheader, label %preloop.pseudo.exit
-; CHECK:        mainloop:
-; CHECK-NEXT:     br label %loop
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
-; CHECK-NEXT:     %idx.next = add i32 %idx, -1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %len
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.postloop:
-; CHECK:        loop.preloop:
-; CHECK-NEXT:     %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ 100, %loop.preloop.preheader ]
-; CHECK-NEXT:     %idx.next.preloop = add i32 %idx.preloop, -1
-; CHECK-NEXT:     %abc.preloop = icmp ult i32 %idx.preloop, %len
-; CHECK-NEXT:     br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_02
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[LEN]], i32 1)
+; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[UMAX]], -1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ugt i32 100, [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preloop.preheader:
+; CHECK-NEXT:    br label [[LOOP_PRELOOP:%.*]]
+; CHECK:       mainloop:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ugt i32 [[IDX_NEXT]], 0
+; CHECK-NEXT:    br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       loop.preloop:
+; CHECK-NEXT:    [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ 100, [[LOOP_PRELOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP]] = add i32 [[IDX_PRELOOP]], -1
+; CHECK-NEXT:    [[ABC_PRELOOP:%.*]] = icmp ult i32 [[IDX_PRELOOP]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.preloop:
+; CHECK-NEXT:    [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_PRELOOP]], align 4
+; CHECK-NEXT:    [[NEXT_PRELOOP:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], 0
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP7:![0-9]+]], !irce.loop.clone [[META6]]
+; CHECK:       preloop.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP_LCSSA]], 0
+; CHECK-NEXT:    br i1 [[TMP2]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       preloop.pseudo.exit:
+; CHECK-NEXT:    [[IDX_PRELOOP_COPY]] = phi i32 [ 100, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 100, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[MAINLOOP]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 100, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, -1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Check SINT_MAX + 1, test is similar to test_01.
 define void @test_03(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_03(
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add nuw nsw i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_03
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ugt i32 [[IDX_NEXT]], -2147483648
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    [[TMP2:%.*]] = xor i1 [[TMP1]], true
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_EXIT_SELECTOR:%.*]], label [[LOOP]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], -2147483647
+; CHECK-NEXT:    br i1 [[TMP3]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add nuw nsw i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ugt i32 [[IDX_NEXT_POSTLOOP]], -2147483648
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], label [[LOOP_POSTLOOP]], !llvm.loop [[LOOP8:![0-9]+]], !irce.loop.clone [[META6]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Check SINT_MAX + 1, test is similar to test_02.
 define void @test_04(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_04(
-; CHECK:        entry:
-; CHECK-NEXT:     %len = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[UMIN:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %len, i32 1)
-; CHECK-NEXT:     %exit.preloop.at = add nsw i32 [[UMIN]], -1
-; CHECK-NEXT:     [[COND2:%[^ ]+]] = icmp ugt i32 -2147483648, %exit.preloop.at
-; CHECK-NEXT:     br i1 [[COND2]], label %loop.preloop.preheader, label %preloop.pseudo.exit
-; CHECK:        mainloop:
-; CHECK-NEXT:     br label %loop
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
-; CHECK-NEXT:     %idx.next = add i32 %idx, -1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %len
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.postloop:
-; CHECK:        loop.preloop:
-; CHECK-NEXT:     %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ -2147483648, %loop.preloop.preheader ]
-; CHECK-NEXT:     %idx.next.preloop = add i32 %idx.preloop, -1
-; CHECK-NEXT:     %abc.preloop = icmp ult i32 %idx.preloop, %len
-; CHECK-NEXT:     br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_04
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[LEN]], i32 1)
+; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[UMAX]], -1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ugt i32 -2147483648, [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preloop.preheader:
+; CHECK-NEXT:    br label [[LOOP_PRELOOP:%.*]]
+; CHECK:       mainloop:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ugt i32 [[IDX_NEXT]], 0
+; CHECK-NEXT:    br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       loop.preloop:
+; CHECK-NEXT:    [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ -2147483648, [[LOOP_PRELOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP]] = add i32 [[IDX_PRELOOP]], -1
+; CHECK-NEXT:    [[ABC_PRELOOP:%.*]] = icmp ult i32 [[IDX_PRELOOP]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.preloop:
+; CHECK-NEXT:    [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_PRELOOP]], align 4
+; CHECK-NEXT:    [[NEXT_PRELOOP:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], 0
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP9:![0-9]+]], !irce.loop.clone [[META6]]
+; CHECK:       preloop.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP_LCSSA]], 0
+; CHECK-NEXT:    br i1 [[TMP2]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       preloop.pseudo.exit:
+; CHECK-NEXT:    [[IDX_PRELOOP_COPY]] = phi i32 [ -2147483648, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ -2147483648, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[MAINLOOP]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 2147483648, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, -1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Increasing loop, UINT_MAX. Negative test: we cannot add 1 to UINT_MAX.
 define void @test_05(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_05(
-; CHECK-NOT:    loop.preloop:
-; CHECK-NOT:    loop.postloop:
+; CHECK-LABEL: define void @test_05
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ugt i32 [[IDX_NEXT]], -1
+; CHECK-NEXT:    br i1 [[NEXT]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Decreasing loop, UINT_MAX. Positive test.
 define void @test_06(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_06(
-; CHECK:        mainloop:
-; CHECK-NEXT:     br label %loop
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
-; CHECK-NEXT:     %idx.next = add nuw i32 %idx, -1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %len
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.postloop:
-; CHECK:        loop.preloop:
-; CHECK-NEXT:     %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ -1, %loop.preloop.preheader ]
-; CHECK-NEXT:     %idx.next.preloop = add nuw i32 %idx.preloop, -1
-; CHECK-NEXT:     %abc.preloop = icmp ult i32 %idx.preloop, %len
-; CHECK-NEXT:     br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_06
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    br i1 true, label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preloop.preheader:
+; CHECK-NEXT:    br label [[LOOP_PRELOOP:%.*]]
+; CHECK:       mainloop:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ugt i32 [[IDX_NEXT]], 0
+; CHECK-NEXT:    br i1 [[NEXT]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       loop.preloop:
+; CHECK-NEXT:    [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ -1, [[LOOP_PRELOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP]] = add nuw i32 [[IDX_PRELOOP]], -1
+; CHECK-NEXT:    [[ABC_PRELOOP:%.*]] = icmp ult i32 [[IDX_PRELOOP]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.preloop:
+; CHECK-NEXT:    [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_PRELOOP]], align 4
+; CHECK-NEXT:    [[NEXT_PRELOOP:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], 0
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], 0
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP10:![0-9]+]], !irce.loop.clone [[META6]]
+; CHECK:       preloop.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ]
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP_LCSSA]], 0
+; CHECK-NEXT:    br i1 [[TMP1]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       preloop.pseudo.exit:
+; CHECK-NEXT:    [[IDX_PRELOOP_COPY]] = phi i32 [ -1, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ -1, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[MAINLOOP]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 4294967295, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nuw i32 %idx, -1

 out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 !0 = !{i32 0, i32 50}
+;.
+; CHECK: [[RNG0]] = !{i32 0, i32 50}
+; CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[META2:![0-9]+]], [[META3:![0-9]+]], [[META4:![0-9]+]], [[META5:![0-9]+]]}
+; CHECK: [[META2]] = !{!"llvm.loop.unroll.disable"}
+; CHECK: [[META3]] = !{!"llvm.loop.vectorize.enable", i1 false}
+; CHECK: [[META4]] = !{!"llvm.loop.licm_versioning.disable"}
+; CHECK: [[META5]] = !{!"llvm.loop.distribute.enable", i1 false}
+; CHECK: [[META6]] = !{}
+; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP10]] = distinct !{[[LOOP10]], [[META2]], [[META3]], [[META4]], [[META5]]}
+;.

llvm/test/Transforms/IRCE/unsigned_comparisons_ult.ll

+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes=irce -S < %s 2>&1 | FileCheck %s
 ; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
 
 ; CHECK: irce: in function test_01: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_02: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_03: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_04: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_05: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_06: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK-NOT: irce: in function test_07: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK: irce: in function test_08: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 ; CHECK-NOT: irce: in function test_09: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
 
 ; ULT condition for increasing loop.
 define void @test_01(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK:      test_01
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add nuw nsw i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_01
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0:![0-9]+]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], 100
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], 100
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add nuw nsw i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], 100
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP1:![0-9]+]], !irce.loop.clone [[META6:![0-9]+]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; ULT condition for decreasing loops.
 define void @test_02(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_02(
-; CHECK:        entry:
-; CHECK-NEXT:     %len = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[UMIN:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %len, i32 1)
-; CHECK-NEXT:     %exit.preloop.at = add nsw i32 [[UMIN]], -1
-; CHECK-NEXT:     [[COND2:%[^ ]+]] = icmp ugt i32 100, %exit.preloop.at
-; CHECK-NEXT:     br i1 [[COND2]], label %loop.preloop.preheader, label %preloop.pseudo.exit
-; CHECK:        mainloop:
-; CHECK-NEXT:     br label %loop
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
-; CHECK-NEXT:     %idx.next = add i32 %idx, -1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %len
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.postloop:
-; CHECK:        loop.preloop:
-; CHECK-NEXT:     %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ 100, %loop.preloop.preheader ]
-; CHECK-NEXT:     %idx.next.preloop = add i32 %idx.preloop, -1
-; CHECK-NEXT:     %abc.preloop = icmp ult i32 %idx.preloop, %len
-; CHECK-NEXT:     br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_02
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[LEN]], i32 1)
+; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[UMAX]], -1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ugt i32 100, [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preloop.preheader:
+; CHECK-NEXT:    br label [[LOOP_PRELOOP:%.*]]
+; CHECK:       mainloop:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], 1
+; CHECK-NEXT:    br i1 [[NEXT]], label [[EXIT_LOOPEXIT:%.*]], label [[LOOP]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       loop.preloop:
+; CHECK-NEXT:    [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ 100, [[LOOP_PRELOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP]] = add i32 [[IDX_PRELOOP]], -1
+; CHECK-NEXT:    [[ABC_PRELOOP:%.*]] = icmp ult i32 [[IDX_PRELOOP]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.preloop:
+; CHECK-NEXT:    [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_PRELOOP]], align 4
+; CHECK-NEXT:    [[NEXT_PRELOOP:%.*]] = icmp ult i32 [[IDX_NEXT_PRELOOP]], 1
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    [[TMP2:%.*]] = xor i1 [[TMP1]], true
+; CHECK-NEXT:    br i1 [[TMP2]], label [[PRELOOP_EXIT_SELECTOR:%.*]], label [[LOOP_PRELOOP]], !llvm.loop [[LOOP7:![0-9]+]], !irce.loop.clone [[META6]]
+; CHECK:       preloop.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ]
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP_LCSSA]], 0
+; CHECK-NEXT:    br i1 [[TMP3]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       preloop.pseudo.exit:
+; CHECK-NEXT:    [[IDX_PRELOOP_COPY]] = phi i32 [ 100, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 100, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[MAINLOOP]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 100, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, -1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Check SINT_MAX.
 define void @test_03(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK:      test_03
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add nuw nsw i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_03
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], 2147483647
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], 2147483647
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add nuw nsw i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], 2147483647
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP8:![0-9]+]], !irce.loop.clone [[META6]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Check SINT_MAX + 1, test is similar to test_01.
 define void @test_04(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK:      test_04
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add nuw nsw i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_04
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], -2147483648
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], -2147483648
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add nuw nsw i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], -2147483648
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP9:![0-9]+]], !irce.loop.clone [[META6]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Check SINT_MAX + 1, test is similar to test_02.
 define void @test_05(ptr %arr, ptr %a_len_ptr) #0 {
-; CHECK: test_05(
-; CHECK:        entry:
-; CHECK-NEXT:     %len = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[UMIN:%[^ ]+]] = call i32 @llvm.umax.i32(i32 %len, i32 1)
-; CHECK-NEXT:     %exit.preloop.at = add nsw i32 [[UMIN]], -1
-; CHECK-NEXT:     [[COND2:%[^ ]+]] = icmp ugt i32 -2147483648, %exit.preloop.at
-; CHECK-NEXT:     br i1 [[COND2]], label %loop.preloop.preheader, label %preloop.pseudo.exit
-; CHECK:        mainloop:
-; CHECK-NEXT:     br label %loop
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.preloop.copy, %mainloop ], [ %idx.next, %in.bounds ]
-; CHECK-NEXT:     %idx.next = add i32 %idx, -1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %len
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.postloop:
-; CHECK:        loop.preloop:
-; CHECK-NEXT:     %idx.preloop = phi i32 [ %idx.next.preloop, %in.bounds.preloop ], [ -2147483648, %loop.preloop.preheader ]
-; CHECK-NEXT:     %idx.next.preloop = add i32 %idx.preloop, -1
-; CHECK-NEXT:     %abc.preloop = icmp ult i32 %idx.preloop, %len
-; CHECK-NEXT:     br i1 %abc.preloop, label %in.bounds.preloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_05
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[LEN]], i32 1)
+; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[UMAX]], -1
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ugt i32 -2147483648, [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preloop.preheader:
+; CHECK-NEXT:    br label [[LOOP_PRELOOP:%.*]]
+; CHECK:       mainloop:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_PRELOOP_COPY:%.*]], [[MAINLOOP:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], 1
+; CHECK-NEXT:    br i1 [[NEXT]], label [[EXIT_LOOPEXIT:%.*]], label [[LOOP]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT:%.*]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       loop.preloop:
+; CHECK-NEXT:    [[IDX_PRELOOP:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP:%.*]], [[IN_BOUNDS_PRELOOP:%.*]] ], [ -2147483648, [[LOOP_PRELOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP]] = add i32 [[IDX_PRELOOP]], -1
+; CHECK-NEXT:    [[ABC_PRELOOP:%.*]] = icmp ult i32 [[IDX_PRELOOP]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC_PRELOOP]], label [[IN_BOUNDS_PRELOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.preloop:
+; CHECK-NEXT:    [[ADDR_PRELOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_PRELOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_PRELOOP]], align 4
+; CHECK-NEXT:    [[NEXT_PRELOOP:%.*]] = icmp ult i32 [[IDX_NEXT_PRELOOP]], 1
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP]], [[EXIT_PRELOOP_AT]]
+; CHECK-NEXT:    [[TMP2:%.*]] = xor i1 [[TMP1]], true
+; CHECK-NEXT:    br i1 [[TMP2]], label [[PRELOOP_EXIT_SELECTOR:%.*]], label [[LOOP_PRELOOP]], !llvm.loop [[LOOP10:![0-9]+]], !irce.loop.clone [[META6]]
+; CHECK:       preloop.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT_PRELOOP]], [[IN_BOUNDS_PRELOOP]] ]
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp ugt i32 [[IDX_NEXT_PRELOOP_LCSSA]], 0
+; CHECK-NEXT:    br i1 [[TMP3]], label [[PRELOOP_PSEUDO_EXIT]], label [[EXIT]]
+; CHECK:       preloop.pseudo.exit:
+; CHECK-NEXT:    [[IDX_PRELOOP_COPY]] = phi i32 [ -2147483648, [[ENTRY:%.*]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ -2147483648, [[ENTRY]] ], [ [[IDX_NEXT_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[MAINLOOP]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 2147483648, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, -1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Increasing loop, UINT_MAX. Positive test.
 define void @test_06(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK:      test_06
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add nuw nsw i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add nuw nsw i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_06
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], -1
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], -1
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add nuw nsw i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], -1
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP11:![0-9]+]], !irce.loop.clone [[META6]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nsw nuw i32 %idx, 1
out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 ; Decreasing loop, UINT_MAX. Negative test: we cannot substract -1 from 0.
 define void @test_07(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK: test_07(
-; CHECK-NOT:    loop.preloop:
-; CHECK-NOT:    loop.postloop:
+; CHECK-LABEL: define void @test_07
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ -1, [[ENTRY:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add nuw i32 [[IDX]], -1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], 0
+; CHECK-NEXT:    br i1 [[NEXT]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 4294967295, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add nuw i32 %idx, -1
exit:
   ret void
 }
 
 ; Unsigned walking through signed border is allowed.
 ; Iteration space [0; UINT_MAX - 99), the fact that SINT_MAX is within this
 ; range does not prevent us from performing IRCE.
 
 define void @test_08(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK:      test_08
-; CHECK:        entry:
-; CHECK-NEXT:     %exit.mainloop.at = load i32, ptr %a_len_ptr, align 4, !range !0
-; CHECK-NEXT:     [[COND:%[^ ]+]] = icmp ult i32 0, %exit.mainloop.at
-; CHECK-NEXT:     br i1 [[COND]], label %loop.preheader, label %main.pseudo.exit
-; CHECK:        loop:
-; CHECK-NEXT:     %idx = phi i32 [ %idx.next, %in.bounds ], [ 0, %loop.preheader ]
-; CHECK-NEXT:     %idx.next = add i32 %idx, 1
-; CHECK-NEXT:     %abc = icmp ult i32 %idx, %exit.mainloop.at
-; CHECK-NEXT:     br i1 true, label %in.bounds, label %out.of.bounds.loopexit1
-; CHECK-NOT:    loop.preloop:
-; CHECK:        loop.postloop:
-; CHECK-NEXT:     %idx.postloop = phi i32 [ %idx.copy, %postloop ], [ %idx.next.postloop, %in.bounds.postloop ]
-; CHECK-NEXT:     %idx.next.postloop = add i32 %idx.postloop, 1
-; CHECK-NEXT:     %abc.postloop = icmp ult i32 %idx.postloop, %exit.mainloop.at
-; CHECK-NEXT:     br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds.loopexit
+; CHECK-LABEL: define void @test_08
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
+; CHECK:       loop.preheader:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ], [ 0, [[LOOP_PREHEADER]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 true, label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS_LOOPEXIT1:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], -100
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[IDX_NEXT]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[TMP1]], label [[LOOP]], label [[MAIN_EXIT_SELECTOR:%.*]]
+; CHECK:       main.exit.selector:
+; CHECK-NEXT:    [[IDX_NEXT_LCSSA:%.*]] = phi i32 [ [[IDX_NEXT]], [[IN_BOUNDS]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ult i32 [[IDX_NEXT_LCSSA]], -100
+; CHECK-NEXT:    br i1 [[TMP2]], label [[MAIN_PSEUDO_EXIT]], label [[EXIT:%.*]]
+; CHECK:       main.pseudo.exit:
+; CHECK-NEXT:    [[IDX_COPY:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IDX_NEXT_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
+; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
+; CHECK:       out.of.bounds.loopexit:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       out.of.bounds.loopexit1:
+; CHECK-NEXT:    br label [[OUT_OF_BOUNDS]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit.loopexit:
+; CHECK-NEXT:    br label [[EXIT]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+; CHECK:       postloop:
+; CHECK-NEXT:    br label [[LOOP_POSTLOOP:%.*]]
+; CHECK:       loop.postloop:
+; CHECK-NEXT:    [[IDX_POSTLOOP:%.*]] = phi i32 [ [[IDX_COPY]], [[POSTLOOP]] ], [ [[IDX_NEXT_POSTLOOP:%.*]], [[IN_BOUNDS_POSTLOOP:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT_POSTLOOP]] = add i32 [[IDX_POSTLOOP]], 1
+; CHECK-NEXT:    [[ABC_POSTLOOP:%.*]] = icmp ult i32 [[IDX_POSTLOOP]], [[EXIT_MAINLOOP_AT]]
+; CHECK-NEXT:    br i1 [[ABC_POSTLOOP]], label [[IN_BOUNDS_POSTLOOP]], label [[OUT_OF_BOUNDS_LOOPEXIT:%.*]]
+; CHECK:       in.bounds.postloop:
+; CHECK-NEXT:    [[ADDR_POSTLOOP:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX_POSTLOOP]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR_POSTLOOP]], align 4
+; CHECK-NEXT:    [[NEXT_POSTLOOP:%.*]] = icmp ult i32 [[IDX_NEXT_POSTLOOP]], -100
+; CHECK-NEXT:    br i1 [[NEXT_POSTLOOP]], label [[LOOP_POSTLOOP]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP12:![0-9]+]], !irce.loop.clone [[META6]]
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, 1

 exit:
   ret void
 }
 
 ; Walking through the border of unsigned range is not allowed
 ; (iteration space [-100; 100)). Negative test.
 
 define void @test_09(ptr %arr, ptr %a_len_ptr) #0 {
-
-; CHECK:      test_09
-; CHECK-NOT:  preloop
-; CHECK-NOT:  postloop
-; CHECK-NOT:  br i1 false
-; CHECK-NOT:  br i1 true
+; CHECK-LABEL: define void @test_09
+; CHECK-SAME: (ptr [[ARR:%.*]], ptr [[A_LEN_PTR:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[LEN:%.*]] = load i32, ptr [[A_LEN_PTR]], align 4, !range [[RNG0]]
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ -100, [[ENTRY:%.*]] ], [ [[IDX_NEXT:%.*]], [[IN_BOUNDS:%.*]] ]
+; CHECK-NEXT:    [[IDX_NEXT]] = add i32 [[IDX]], 1
+; CHECK-NEXT:    [[ABC:%.*]] = icmp ult i32 [[IDX]], [[LEN]]
+; CHECK-NEXT:    br i1 [[ABC]], label [[IN_BOUNDS]], label [[OUT_OF_BOUNDS:%.*]]
+; CHECK:       in.bounds:
+; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i32, ptr [[ARR]], i32 [[IDX]]
+; CHECK-NEXT:    store i32 0, ptr [[ADDR]], align 4
+; CHECK-NEXT:    [[NEXT:%.*]] = icmp ult i32 [[IDX_NEXT]], 100
+; CHECK-NEXT:    br i1 [[NEXT]], label [[LOOP]], label [[EXIT:%.*]]
+; CHECK:       out.of.bounds:
+; CHECK-NEXT:    ret void
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+;
 
 entry:
   %len = load i32, ptr %a_len_ptr, !range !0
   br label %loop
 
 loop:
   %idx = phi i32 [ -100, %entry ], [ %idx.next, %in.bounds ]
   %idx.next = add i32 %idx, 1

 out.of.bounds:
   ret void
 
 exit:
   ret void
 }
 
 !0 = !{i32 0, i32 50}
+;.
+; CHECK: [[RNG0]] = !{i32 0, i32 50}
+; CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[META2:![0-9]+]], [[META3:![0-9]+]], [[META4:![0-9]+]], [[META5:![0-9]+]]}
+; CHECK: [[META2]] = !{!"llvm.loop.unroll.disable"}
+; CHECK: [[META3]] = !{!"llvm.loop.vectorize.enable", i1 false}
+; CHECK: [[META4]] = !{!"llvm.loop.licm_versioning.disable"}
+; CHECK: [[META5]] = !{!"llvm.loop.distribute.enable", i1 false}
+; CHECK: [[META6]] = !{}
+; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP10]] = distinct !{[[LOOP10]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP11]] = distinct !{[[LOOP11]], [[META2]], [[META3]], [[META4]], [[META5]]}
+; CHECK: [[LOOP12]] = distinct !{[[LOOP12]], [[META2]], [[META3]], [[META4]], [[META5]]}
+;.