53 lines
2.0 KiB
LLVM
53 lines
2.0 KiB
LLVM
; This testcase ensures that CFL AA answers queries soundly when callee tries
|
|
; to return the multi-level reference of one of its parameters
|
|
|
|
; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
|
|
; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
|
|
|
|
declare noalias i8* @malloc(i64)
|
|
|
|
define i32*** @return_ref_arg_multilevel_callee(i32* %arg1) {
|
|
%ptr = call noalias i8* @malloc(i64 8)
|
|
%ptr_cast = bitcast i8* %ptr to i32***
|
|
%ptr2 = call noalias i8* @malloc(i64 8)
|
|
%ptr_cast2 = bitcast i8* %ptr2 to i32**
|
|
store i32* %arg1, i32** %ptr_cast2
|
|
store i32** %ptr_cast2, i32*** %ptr_cast
|
|
ret i32*** %ptr_cast
|
|
}
|
|
; CHECK-LABEL: Function: test_return_ref_arg_multilevel
|
|
; CHECK: NoAlias: i32* %a, i32*** %b
|
|
; CHECK: NoAlias: i32** %p, i32*** %b
|
|
; CHECK: NoAlias: i32*** %b, i32*** %pp
|
|
; CHECK: NoAlias: i32* %a, i32** %lb
|
|
; CHECK: NoAlias: i32** %lb, i32** %p
|
|
; CHECK: NoAlias: i32** %lb, i32*** %pp
|
|
; CHECK: NoAlias: i32** %lb, i32*** %b
|
|
; CHECK: MayAlias: i32* %a, i32* %lb_deref
|
|
; CHECK: NoAlias: i32* %lb_deref, i32** %lpp
|
|
; CHECK: MayAlias: i32* %lb_deref, i32* %lpp_deref
|
|
; CHECK: NoAlias: i32* %lpp_deref, i32** %lpp
|
|
; CHECK: MayAlias: i32* %lb_deref, i32* %lp
|
|
; CHECK: NoAlias: i32* %lp, i32** %lpp
|
|
; CHECK: MayAlias: i32* %lp, i32* %lpp_deref
|
|
|
|
; Temporarily disable modref checks
|
|
; Just Mod: Ptr: i32*** %b <-> %b = call i32*** @return_ref_arg_multilevel_callee(i32* %a)
|
|
; Just Mod: Ptr: i32** %lb <-> %b = call i32*** @return_ref_arg_multilevel_callee(i32* %a)
|
|
define void @test_return_ref_arg_multilevel() {
|
|
%a = alloca i32, align 4
|
|
%p = alloca i32*, align 8
|
|
%pp = alloca i32**, align 8
|
|
|
|
store i32* %a, i32** %p
|
|
store i32** %p, i32*** %pp
|
|
%b = call i32*** @return_ref_arg_multilevel_callee(i32* %a)
|
|
|
|
%lb = load i32**, i32*** %b
|
|
%lb_deref = load i32*, i32** %lb
|
|
%lpp = load i32**, i32*** %pp
|
|
%lpp_deref = load i32*, i32** %lpp
|
|
%lp = load i32*, i32** %p
|
|
|
|
ret void
|
|
} |