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      1 ; This testcase ensures that CFL AA answers queries soundly when callee tries 
      2 ; to return one of 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 define i32* @return_arg_callee(i32* %arg1, i32* %arg2) {
      8   ret i32* %arg1
      9 }
     10 ; CHECK-LABEL: Function: test_return_arg
     11 ; CHECK: NoAlias: i32* %a, i32* %b
     12 ; CHECK: MayAlias: i32* %a, i32* %c
     13 ; CHECK: NoAlias: i32* %b, i32* %c
     14 
     15 ; Temporarily disable modref checks
     16 ; NoModRef: Ptr: i32* %b <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
     17 define void @test_return_arg() {
     18   %a = alloca i32, align 4
     19   %b = alloca i32, align 4
     20 
     21   %c = call i32* @return_arg_callee(i32* %a, i32* %b)
     22 
     23   ret void
     24 }