57d57b1afd
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.
113 lines
3.3 KiB
LLVM
113 lines
3.3 KiB
LLVM
; This testcase ensures that CFL AA handles escaped values no more conservative than it should
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; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; CHECK-LABEL: Function: test_local
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; CHECK: NoAlias: i32* %a, i32* %b
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; CHECK: MayAlias: i32* %a, i32* %aAlias
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; CHECK: NoAlias: i32* %aAlias, i32* %b
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define void @test_local() {
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%a = alloca i32, align 4
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%b = alloca i32, align 4
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%aint = ptrtoint i32* %a to i64
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%aAlias = inttoptr i64 %aint to i32*
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load i32, i32* %a
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load i32, i32* %b
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load i32, i32* %aAlias
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ret void
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}
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; CHECK-LABEL: Function: test_global_param
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; CHECK-DAG: NoAlias: i32* %a, i32** %x
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; CHECK-DAG: MayAlias: i32* %a, i32* %xload
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; CHECK-DAG: MayAlias: i32* %a, i32* %gload
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; CHECK-DAG: MayAlias: i32* %gload, i32* %xload
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; CHECK-DAG: MayAlias: i32** %x, i32** @ext_global
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; CHECK-DAG: NoAlias: i32* %a, i32** @ext_global
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@ext_global = external global i32*
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define void @test_global_param(i32** %x) {
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%a = alloca i32, align 4
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%aint = ptrtoint i32* %a to i64
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%xload = load i32*, i32** %x
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%gload = load i32*, i32** @ext_global
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load i32, i32* %a
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load i32, i32* %xload
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load i32, i32* %gload
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ret void
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}
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declare void @external_func(i32**)
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; CHECK-LABEL: Function: test_external_call
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; CHECK-DAG: NoAlias: i32* %b, i32* %x
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; CHECK-DAG: NoAlias: i32** %a, i32* %b
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; CHECK-DAG: MayAlias: i32* %c, i32* %x
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; CHECK-DAG: MayAlias: i32** %a, i32* %c
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; CHECK-DAG: NoAlias: i32* %b, i32* %c
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define void @test_external_call(i32* %x) {
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%a = alloca i32*, align 8
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%b = alloca i32, align 4
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call void @external_func(i32** %a)
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%c = load i32*, i32** %a
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load i32, i32* %x
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load i32, i32* %b
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load i32, i32* %c
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ret void
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}
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declare void @external_func_readonly(i32**) readonly
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; CHECK-LABEL: Function: test_external_call_func_readonly
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; CHECK-DAG: MayAlias: i32* %c, i32* %x
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; CHECK-DAG: NoAlias: i32** %a, i32* %c
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define void @test_external_call_func_readonly(i32* %x) {
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%a = alloca i32*, align 8
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%b = alloca i32, align 4
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store i32* %x, i32** %a, align 4
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call void @external_func_readonly(i32** %a)
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%c = load i32*, i32** %a
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load i32, i32* %x
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load i32, i32* %c
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ret void
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}
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; CHECK-LABEL: Function: test_external_call_callsite_readonly
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; CHECK-DAG: MayAlias: i32* %c, i32* %x
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; CHECK-DAG: NoAlias: i32** %a, i32* %c
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define void @test_external_call_callsite_readonly(i32* %x) {
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%a = alloca i32*, align 8
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%b = alloca i32, align 4
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store i32* %x, i32** %a, align 4
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call void @external_func(i32** %a) readonly
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%c = load i32*, i32** %a
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load i32, i32* %x
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load i32, i32* %c
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ret void
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}
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declare i32* @external_func_normal_return(i32*)
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; CHECK-LABEL: Function: test_external_call_normal_return
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; CHECK: MayAlias: i32* %c, i32* %x
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; CHECK: MayAlias: i32* %a, i32* %c
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define void @test_external_call_normal_return(i32* %x) {
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%a = alloca i32, align 8
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%b = alloca i32, align 4
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%c = call i32* @external_func_normal_return(i32* %a)
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load i32, i32* %x
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load i32, i32* %a
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load i32, i32* %c
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ret void
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}
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declare noalias i32* @external_func_noalias_return(i32*)
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; CHECK-LABEL: Function: test_external_call_noalias_return
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; CHECK: NoAlias: i32* %c, i32* %x
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; CHECK: NoAlias: i32* %a, i32* %c
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define void @test_external_call_noalias_return(i32* %x) {
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%a = alloca i32, align 8
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%b = alloca i32, align 4
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%c = call i32* @external_func_noalias_return(i32* %a)
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load i32, i32* %x
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load i32, i32* %a
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load i32, i32* %c
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ret void
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}
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