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view test/Analysis/BasicAA/2003-09-19-LocalArgument.ll @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children
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; In this test, a local alloca cannot alias an incoming argument.

; RUN: opt < %s -basicaa -gvn -instcombine -S | FileCheck %s

; CHECK:      define i32 @test
; CHECK-NEXT: ret i32 0

define i32 @test(i32* %P) {
	%X = alloca i32
	%V1 = load i32, i32* %P
	store i32 0, i32* %X
	%V2 = load i32, i32* %P
	%Diff = sub i32 %V1, %V2
	ret i32 %Diff
}