32 lines
1.0 KiB
LLVM
32 lines
1.0 KiB
LLVM
; This testcase ensures that CFL AA answers queries soundly when callee tries
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; to mutate the memory pointed to by its parameters
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; RUN: opt < %s -disable-basic-aa -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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@g = external global i32
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define void @store_arg_unknown_callee(i32** %arg1) {
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store i32* @g, i32** %arg1
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ret void
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}
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; CHECK-LABEL: Function: test_store_arg_unknown
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; CHECK: NoAlias: i32* %x, i32** %p
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; CHECK: NoAlias: i32* %a, i32** %p
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; CHECK: NoAlias: i32* %b, i32** %p
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; CHECK: MayAlias: i32* %lp, i32* %x
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; CHECK: MayAlias: i32* %a, i32* %lp
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; CHECK: NoAlias: i32* %b, i32* %lp
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; CHECK: NoAlias: i32* %lp, i32** %p
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define void @test_store_arg_unknown(i32* %x) {
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%a = alloca i32, align 4
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%b = alloca i32, align 4
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%p = alloca i32*, align 8
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store i32* %a, i32** %p
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call void @store_arg_unknown_callee(i32** %p)
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%lp = load i32*, i32** %p
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ret void
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} |