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22 lines
515 B
LLVM
22 lines
515 B
LLVM
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; RUN: opt < %s -S -early-cse | FileCheck %s
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; CHECK: @test1
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define void @test1(i8 %V, i32 *%P) {
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%A = bitcast i64 42 to double ;; dead
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%B = add i32 4, 19 ;; constant folds
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store i32 %B, i32* %P
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; CHECK-NEXT: store i32 23, i32* %P
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%C = zext i8 %V to i32
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%D = zext i8 %V to i32 ;; CSE
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volatile store i32 %C, i32* %P
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volatile store i32 %D, i32* %P
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; CHECK-NEXT: %C = zext i8 %V to i32
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; CHECK-NEXT: volatile store i32 %C
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; CHECK-NEXT: volatile store i32 %C
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ret void
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}
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