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7a90a95ac2
Following https://reviews.llvm.org/D82607. Reviewed By: ychen Differential Revision: https://reviews.llvm.org/D82683
17 lines
470 B
LLVM
17 lines
470 B
LLVM
; RUN: opt < %s -basic-aa -gvn -instcombine -S | FileCheck %s
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define i32 @test() {
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; CHECK: ret i32 0
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%A = alloca i32 ; <i32*> [#uses=3]
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call void @foo( i32* %A )
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%X = load i32, i32* %A ; <i32> [#uses=1]
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tail call void @bar( )
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%Y = load i32, i32* %A ; <i32> [#uses=1]
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%Z = sub i32 %X, %Y ; <i32> [#uses=1]
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ret i32 %Z
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}
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declare void @foo(i32*)
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declare void @bar()
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