test/Analysis/BasicAA/2003-09-19-LocalArgument.ll


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

; 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* %P
	store i32 0, i32* %X
	%V2 = load i32* %P
	%Diff = sub i32 %V1, %V2
	ret i32 %Diff
}