forked from OSchip/llvm-project
46 lines
1.3 KiB
LLVM
46 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
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define void @pr46638(i1 %c, i32 %x) {
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; CHECK-LABEL: @pr46638(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], 0
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; CHECK-NEXT: call void @llvm.assume(i1 [[CMP1]])
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; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE2_CRITEDGE:%.*]], label [[FALSE1:%.*]]
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; CHECK: false1:
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; CHECK-NEXT: call void @dummy(i32 1)
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[X]], 0
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; CHECK-NEXT: [[EXT:%.*]] = zext i1 [[CMP2]] to i32
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; CHECK-NEXT: call void @dummy(i32 [[EXT]])
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; CHECK-NEXT: ret void
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; CHECK: true2.critedge:
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; CHECK-NEXT: [[CMP2_C:%.*]] = icmp sgt i32 [[X]], 0
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; CHECK-NEXT: [[EXT_C:%.*]] = zext i1 [[CMP2_C]] to i32
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; CHECK-NEXT: call void @dummy(i32 [[EXT_C]])
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; CHECK-NEXT: call void @dummy(i32 2)
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; CHECK-NEXT: ret void
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;
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%cmp1 = icmp slt i32 %x, 0
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call void @llvm.assume(i1 %cmp1)
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br i1 %c, label %true1, label %false1
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true1:
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%cmp2 = icmp sgt i32 %x, 0
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%ext = zext i1 %cmp2 to i32
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call void @dummy(i32 %ext)
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br i1 %c, label %true2, label %false2
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false1:
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call void @dummy(i32 1)
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br label %true1
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true2:
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call void @dummy(i32 2)
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ret void
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false2:
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ret void
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}
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declare void @dummy(i32)
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declare void @llvm.assume(i1)
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