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llvm-mirror/test/Analysis/GlobalsModRef/modreftest.ll
Amaury Sechet 2856f73ed4 Revert "GlobalsAA: Take advantage of ArgMemOnly, InaccessibleMemOnly and InaccessibleMemOrArgMemOnly attributes"
Summary:
This reverts commit 5a9e526f29cf8510ab5c3d566fbdcf47ac24e1e9.

As per discussion in D15665

This also add a test case so that regression introduced by that diff are not reintroduced.

Reviewers: vaivaswatha, jmolloy, hfinkel, reames

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D15919

llvm-svn: 256932
2016-01-06 13:23:52 +00:00

19 lines
406 B
LLVM

; RUN: opt < %s -basicaa -globals-aa -gvn -S | FileCheck %s
@X = internal global i32 4 ; <i32*> [#uses=2]
define i32 @test(i32* %P) {
; CHECK: @test
; CHECK-NEXT: store i32 12, i32* @X
; CHECK-NEXT: call void @doesnotmodX()
; CHECK-NEXT: ret i32 12
store i32 12, i32* @X
call void @doesnotmodX( )
%V = load i32, i32* @X ; <i32> [#uses=1]
ret i32 %V
}
define void @doesnotmodX() {
ret void
}