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      1 ; This testcase ensures that CFL AA answers queries soundly when callee tries 
      2 ; to mutate the memory pointed to by 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 @g = external global i32
      8 
      9 define void @store_arg_unknown_callee(i32** %arg1) {
     10 	store i32* @g, i32** %arg1
     11 	ret void
     12 }
     13 ; CHECK-LABEL: Function: test_store_arg_unknown
     14 ; CHECK: NoAlias: i32* %x, i32** %p
     15 ; CHECK: NoAlias: i32* %a, i32** %p
     16 ; CHECK: NoAlias: i32* %b, i32** %p
     17 ; CHECK: MayAlias: i32* %lp, i32* %x
     18 ; CHECK: MayAlias: i32* %a, i32* %lp
     19 ; CHECK: NoAlias: i32* %b, i32* %lp
     20 ; CHECK: NoAlias: i32* %lp, i32** %p
     21 define void @test_store_arg_unknown(i32* %x) {
     22   %a = alloca i32, align 4
     23   %b = alloca i32, align 4
     24   %p = alloca i32*, align 8
     25 
     26   store i32* %a, i32** %p
     27   call void @store_arg_unknown_callee(i32** %p)
     28 
     29   %lp = load i32*, i32** %p
     30 
     31   ret void
     32 }