mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 03:53:04 +02:00
ea13b8a791
function analyses, and use it to wire up globals-aa to the new pass manager. llvm-svn: 263211
27 lines
959 B
LLVM
27 lines
959 B
LLVM
; RUN: opt < %s -basicaa -globals-aa -gvn -instcombine -S -enable-unsafe-globalsmodref-alias-results | FileCheck %s
|
|
; RUN: opt < %s -aa-pipeline=basic-aa,globals-aa -passes="require<globals-aa>,function(gvn,instcombine)" -S -enable-unsafe-globalsmodref-alias-results | FileCheck %s
|
|
;
|
|
; Note that this test relies on an unsafe feature of GlobalsModRef. While this
|
|
; test is correct and safe, GMR's technique for handling this isn't generally.
|
|
|
|
@G = internal global i32* null ; <i32**> [#uses=3]
|
|
|
|
declare i8* @malloc(i32)
|
|
define void @test() {
|
|
%a = call i8* @malloc(i32 4)
|
|
%A = bitcast i8* %a to i32*
|
|
store i32* %A, i32** @G
|
|
ret void
|
|
}
|
|
|
|
define i32 @test1(i32* %P) {
|
|
; CHECK: ret i32 0
|
|
%g1 = load i32*, i32** @G ; <i32*> [#uses=2]
|
|
%h1 = load i32, i32* %g1 ; <i32> [#uses=1]
|
|
store i32 123, i32* %P
|
|
%g2 = load i32*, i32** @G ; <i32*> [#uses=0]
|
|
%h2 = load i32, i32* %g1 ; <i32> [#uses=1]
|
|
%X = sub i32 %h1, %h2 ; <i32> [#uses=1]
|
|
ret i32 %X
|
|
}
|