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      1 ; This testcase ensures that CFL AA answers queries soundly when callee tries 
      2 ; to escape its parameters
      3 
      4 ; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
      5 ; RUN: opt < %s -aa-pipeline=cfl-steens-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
      6 
      7 declare void @opaque(i32*)
      8 define void @escape_arg(i32* %arg) {
      9 	call void @opaque(i32* %arg)
     10 	ret void
     11 }
     12 ; CHECK-LABEL: Function: test_arg_escape
     13 ; CHECK: NoAlias: i32* %a, i32** %x
     14 ; CHECK: NoAlias: i32* %b, i32** %x
     15 ; CHECK: NoAlias: i32* %a, i32* %b
     16 ; CHECK: NoAlias: i32* %c, i32** %x
     17 ; CHECK: NoAlias: i32* %a, i32* %c
     18 ; CHECK: NoAlias: i32* %b, i32* %c
     19 ; CHECK: MayAlias: i32* %a, i32* %d
     20 ; CHECK: MayAlias: i32* %b, i32* %d
     21 ; CHECK: NoAlias: i32* %c, i32* %d
     22 define void @test_arg_escape(i32** %x) {
     23   %a = alloca i32, align 4
     24   %b = alloca i32, align 4
     25   %c = alloca i32, align 4
     26   call void @escape_arg(i32* %a)
     27   call void @escape_arg(i32* %b)
     28   %d = load i32*, i32** %x
     29 
     30   ret void
     31 }