21 lines
727 B
LLVM
21 lines
727 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S -passes=gvn < %s | FileCheck %s
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; Make sure nsw/nuw flags are dropped.
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define i32 @pr82884(i32 %x) {
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; CHECK-LABEL: define i32 @pr82884(
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; CHECK-SAME: i32 [[X:%.*]]) {
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; CHECK-NEXT: [[MUL:%.*]] = mul i32 [[X]], [[X]]
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; CHECK-NEXT: call void @use(i32 [[MUL]])
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; CHECK-NEXT: [[MUL2:%.*]] = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 [[X]], i32 [[X]])
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; CHECK-NEXT: ret i32 [[MUL]]
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;
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%mul = mul nsw nuw i32 %x, %x
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call void @use(i32 %mul)
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%mul2 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %x, i32 %x)
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%ret = extractvalue { i32, i1 } %mul2, 0
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ret i32 %ret
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}
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declare void @use(i32)
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