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llvm-project/llvm/test/Analysis/CFLAliasAnalysis/Andersen/interproc-arg-escape.ll

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[CFLAA] Add some interproc. analysis to CFLAnders. This patch adds function summary support to CFLAnders. It also comes with a lot of tests! Woohoo! Patch by Jia Chen. Differential Revision: https://reviews.llvm.org/D22450 llvm-svn: 276026
2016-07-20 04:47:15 +08:00
; 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
[AAEval] Make compatible with opaque pointers With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
2022-03-15 17:18:19 +08:00
; 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
[CFLAA] Add some interproc. analysis to CFLAnders. This patch adds function summary support to CFLAnders. It also comes with a lot of tests! Woohoo! Patch by Jia Chen. Differential Revision: https://reviews.llvm.org/D22450 llvm-svn: 276026
2016-07-20 04:47:15 +08:00
define void @test_arg_escape(i32** %x) {
%a = alloca i32, align 4
%b = alloca i32, align 4
%c = alloca i32, align 4
[AAEval] Make compatible with opaque pointers With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
2022-03-15 17:18:19 +08:00
load i32, i32* %a
load i32, i32* %b
load i32, i32* %c
[CFLAA] Add some interproc. analysis to CFLAnders. This patch adds function summary support to CFLAnders. It also comes with a lot of tests! Woohoo! Patch by Jia Chen. Differential Revision: https://reviews.llvm.org/D22450 llvm-svn: 276026
2016-07-20 04:47:15 +08:00
call void @escape_arg(i32* %a)
call void @escape_arg(i32* %b)
%d = load i32*, i32** %x
[AAEval] Make compatible with opaque pointers With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
2022-03-15 17:18:19 +08:00
load i32, i32* %d
[CFLAA] Add some interproc. analysis to CFLAnders. This patch adds function summary support to CFLAnders. It also comes with a lot of tests! Woohoo! Patch by Jia Chen. Differential Revision: https://reviews.llvm.org/D22450 llvm-svn: 276026
2016-07-20 04:47:15 +08:00
ret void
[AAEval] Make compatible with opaque pointers With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
2022-03-15 17:18:19 +08:00
}