36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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define i32 @main(ptr %a, i8 %a0, i32 %conv, i8 %a1) {
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; CHECK-LABEL: define i32 @main(
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; CHECK-SAME: ptr [[A:%.*]], i8 [[A0:%.*]], i32 [[CONV:%.*]], i8 [[A1:%.*]]) {
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; CHECK-NEXT: [[A3:%.*]] = trunc i32 [[CONV]] to i8
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; CHECK-NEXT: [[OR11:%.*]] = or i8 [[A3]], [[A0]]
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; CHECK-NEXT: store i8 [[OR11]], ptr [[A]], align 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[A1]], 0
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; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
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; CHECK-NEXT: ret i32 [[CONV]]
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;
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%conv1 = sext i8 %a1 to i32
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%a2 = xor i32 %conv, 1
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%or = or i32 %conv1, %conv
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%not = xor i32 %or, -1
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%shr = lshr i32 %not, 1
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%add.neg3 = sub i32 %a2, %shr
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%conv24 = trunc i32 %add.neg3 to i8
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store i8 %conv24, ptr %a, align 1
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%sext = shl i32 %conv, 0
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%conv3 = ashr i32 %sext, 0
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%a3 = trunc i32 %conv to i8
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%conv5 = or i8 %a3, 0
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%xor6 = xor i8 %conv5, 0
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%xor816 = xor i8 %a0, 0
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%a4 = xor i8 %xor816, 0
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%or11 = or i8 %xor6, %a4
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store i8 %or11, ptr %a, align 1
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%cmp = icmp slt i8 %a1, 0
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call void @llvm.assume(i1 %cmp)
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ret i32 %conv3
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}
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declare void @llvm.assume(i1)
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