31 lines
1.2 KiB
LLVM
31 lines
1.2 KiB
LLVM
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; RUN: opt %s -S -disable-basic-aa -cfl-steens-aa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
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;
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; Regression: we weren't properly checking constexpr selects.
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@g = extern_weak dso_local global i32, align 4
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@g2 = extern_weak dso_local global i32, align 4
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@g3 = extern_weak dso_local global i32, align 4
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; CHECK-LABEL: Function: foo
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; CHECK: NoAlias: i32* select (i1 icmp ne (i32* @g, i32* null), i32* @g2, i32* @g3), i32** %a
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; CHECK: NoAlias: i32* %b, i32** %a
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; CHECK: MayAlias: i32* %b, i32* select (i1 icmp ne (i32* @g, i32* null), i32* @g2, i32* @g3)
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; CHECK: NoAlias: i32* @g2, i32** %a
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; CHECK: MayAlias: i32* @g2, i32* select (i1 icmp ne (i32* @g, i32* null), i32* @g2, i32* @g3)
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; CHECK: MayAlias: i32* %b, i32* @g2
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; CHECK: NoAlias: i32* @g3, i32** %a
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; CHECK: MayAlias: i32* @g3, i32* select (i1 icmp ne (i32* @g, i32* null), i32* @g2, i32* @g3)
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; CHECK: MayAlias: i32* %b, i32* @g3
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; CHECK: MayAlias: i32* @g2, i32* @g3
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define void @foo() {
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entry:
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%a = alloca i32*, align 8
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store i32* select (i1 icmp ne (i32* @g, i32* null), i32* @g2, i32* @g3), i32** %a
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%b = load i32*, i32** %a
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%c = load i32, i32* %b
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%d = load i32, i32* @g2
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%e = load i32, i32* @g3
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ret void
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}
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