45 lines
1.1 KiB
LLVM
45 lines
1.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -gvn -S | FileCheck %s
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declare void @llvm.assume(i1)
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declare void @use(i1)
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define void @assume_arg(i1 %x) {
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; CHECK-LABEL: @assume_arg(
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; CHECK-NEXT: call void @llvm.assume(i1 [[X:%.*]])
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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;
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call void @llvm.assume(i1 %x)
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call void @use(i1 %x)
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ret void
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}
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define void @assume_not_arg(i1 %x) {
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; CHECK-LABEL: @assume_not_arg(
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; CHECK-NEXT: [[XOR:%.*]] = xor i1 [[X:%.*]], true
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; CHECK-NEXT: call void @llvm.assume(i1 [[XOR]])
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: ret void
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;
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%xor = xor i1 %x, true
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call void @llvm.assume(i1 %xor)
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call void @use(i1 %x)
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ret void
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}
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define void @pr47496(i8 %x) {
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; CHECK-LABEL: @pr47496(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[X:%.*]], 0
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; CHECK-NEXT: [[XOR:%.*]] = xor i1 [[CMP]], true
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; CHECK-NEXT: call void @llvm.assume(i1 [[XOR]])
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: ret void
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;
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%cmp = icmp slt i8 %x, 0
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%xor = xor i1 %cmp, true
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call void @llvm.assume(i1 %xor)
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call void @use(i1 %cmp)
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ret void
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}
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