35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
; This testcase ensures that CFL AA handles assignment cycles correctly
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; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; CHECK-LABEL: Function: test_cycle
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; CHECK: NoAlias: i64* %a, i64** %b
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; CHECK: NoAlias: i64* %a, i64*** %c
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; CHECK: NoAlias: i64** %b, i64*** %c
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; CHECK: NoAlias: i64* %a, i64**** %d
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; CHECK: NoAlias: i64** %b, i64**** %d
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; CHECK: NoAlias: i64*** %c, i64**** %d
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; CHECK: NoAlias: i64* %a, i64* %e
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; CHECK: NoAlias: i64* %e, i64** %b
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; CHECK: NoAlias: i64* %e, i64*** %c
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; CHECK: MayAlias: i64* %a, i64* %f
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; CHECK: NoAlias: i64* %f, i64** %b
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; CHECK: NoAlias: i64* %f, i64*** %c
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; CHECK: MayAlias: i64* %f, i64**** %d
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; CHECK: MayAlias: i64* %e, i64* %f
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define void @test_cycle() {
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%a = alloca i64, align 8
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%b = alloca i64*, align 8
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%c = alloca i64**, align 8
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%d = alloca i64***, align 8
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store i64* %a, i64** %b
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store i64** %b, i64*** %c
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store i64*** %c, i64**** %d
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%e = bitcast i64**** %d to i64*
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store i64* %e, i64** %b
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%f = load i64*, i64** %b
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ret void
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}
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