26 lines
1020 B
LLVM
26 lines
1020 B
LLVM
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; This testcase ensures that CFL AA answers queries soundly when callee tries
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; to return one of 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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define i32* @return_arg_callee(i32* %arg1, i32* %arg2) {
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ret i32* %arg1
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}
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; CHECK-LABEL: Function: test_return_arg
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; CHECK: NoAlias: i32* %a, i32* %b
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; CHECK: MayAlias: i32* %a, i32* %c
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; CHECK: NoAlias: i32* %b, i32* %c
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; Temporarily disable modref checks
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; NoModRef: Ptr: i32* %a <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
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; NoModRef: Ptr: i32* %b <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
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; NoModRef: Ptr: i32* %c <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
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define void @test_return_arg() {
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%a = alloca i32, align 4
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%b = alloca i32, align 4
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%c = call i32* @return_arg_callee(i32* %a, i32* %b)
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ret void
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}
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