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view test/Analysis/BasicAA/2003-09-19-LocalArgument.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 95c75e76d11b
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
}