34 lines
698 B
LLVM
34 lines
698 B
LLVM
; RUN: opt < %s -basic-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; If GEP base doesn't alias Z, then GEP doesn't alias Z.
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; rdar://7282591
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@Y = common global i32 0
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@Z = common global i32 0
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; CHECK: Function: foo
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; CHECK: NoAlias: i32* %P, i32* @Z
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define void @foo(i32 %cond) nounwind {
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entry:
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%a = alloca i32
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%tmp = icmp ne i32 %cond, 0
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br i1 %tmp, label %bb, label %bb1
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bb:
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%b = getelementptr i32, i32* %a, i32 0
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br label %bb2
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bb1:
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br label %bb2
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bb2:
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%P = phi i32* [ %b, %bb ], [ @Y, %bb1 ]
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%tmp1 = load i32, i32* @Z, align 4
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store i32 123, i32* %P, align 4
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%tmp2 = load i32, i32* @Z, align 4
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br label %return
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return:
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ret void
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}
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