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; This testcase ensures that CFL AA answers queries soundly when callee tries
; to escape its parameters
; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
declare void @opaque(i32*)
define void @escape_arg(i32* %arg) {
call void @opaque(i32* %arg)
ret void
}
; CHECK-LABEL: Function: test_arg_escape
; CHECK-DAG: NoAlias: i32* %a, i32** %x
; CHECK-DAG: NoAlias: i32* %b, i32** %x
; CHECK-DAG: NoAlias: i32* %a, i32* %b
; CHECK-DAG: NoAlias: i32* %c, i32** %x
; CHECK-DAG: NoAlias: i32* %a, i32* %c
; CHECK-DAG: NoAlias: i32* %b, i32* %c
; CHECK-DAG: MayAlias: i32* %a, i32* %d
; CHECK-DAG: MayAlias: i32* %b, i32* %d
; CHECK-DAG: NoAlias: i32* %c, i32* %d
define void @test_arg_escape(i32** %x) {
%a = alloca i32, align 4
%b = alloca i32, align 4
%c = alloca i32, align 4
load i32, i32* %a
load i32, i32* %b
load i32, i32* %c
call void @escape_arg(i32* %a)
call void @escape_arg(i32* %b)
%d = load i32*, i32** %x
load i32, i32* %d
ret void
}
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