llvm-6502/test/Analysis/BasicAA/2009-10-13-GEP-BaseNoAlias.ll
Dan Gohman 32d1fe52e2 Delete unneeded ssp attributes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11 21:08:46 +00:00

31 lines
629 B
LLVM

; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output |& grep {NoAlias:.*%P,.*@Z}
; If GEP base doesn't alias Z, then GEP doesn't alias Z.
; rdar://7282591
@Y = common global i32 0
@Z = common global i32 0
define void @foo(i32 %cond) nounwind {
entry:
%a = alloca i32
%tmp = icmp ne i32 %cond, 0
br i1 %tmp, label %bb, label %bb1
bb:
%b = getelementptr i32* %a, i32 0
br label %bb2
bb1:
br label %bb2
bb2:
%P = phi i32* [ %b, %bb ], [ @Y, %bb1 ]
%tmp1 = load i32* @Z, align 4
store i32 123, i32* %P, align 4
%tmp2 = load i32* @Z, align 4
br label %return
return:
ret void
}