mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
//=======- AliasSetTrackerTest.cpp - Unit test for the Alias Set Tracker -===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/AliasAnalysis.h"
|
|
#include "llvm/Analysis/AliasSetTracker.h"
|
|
#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
|
|
#include "llvm/AsmParser/Parser.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
TEST(AliasSetTracker, AliasUnknownInst) {
|
|
StringRef Assembly = R"(
|
|
@a = common global i32 0, align 4
|
|
@b = common global float 0.000000e+00, align 4
|
|
|
|
; Function Attrs: nounwind ssp uwtable
|
|
define i32 @read_a() #0 {
|
|
%1 = load i32, i32* @a, align 4, !tbaa !3
|
|
ret i32 %1
|
|
}
|
|
|
|
; Function Attrs: nounwind ssp uwtable
|
|
define void @write_b() #0 {
|
|
store float 1.000000e+01, float* @b, align 4, !tbaa !7
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind ssp uwtable
|
|
define void @test() #0 {
|
|
%1 = call i32 @read_a(), !tbaa !3
|
|
call void @write_b(), !tbaa !7
|
|
ret void
|
|
}
|
|
|
|
!3 = !{!4, !4, i64 0}
|
|
!4 = !{!"int", !5, i64 0}
|
|
!5 = !{!"omnipotent char", !6, i64 0}
|
|
!6 = !{!"Simple C/C++ TBAA"}
|
|
!7 = !{!8, !8, i64 0}
|
|
!8 = !{!"float", !5, i64 0}
|
|
)";
|
|
|
|
// Parse the IR. The two calls in @test can not access aliasing elements.
|
|
LLVMContext Context;
|
|
SMDiagnostic Error;
|
|
auto M = parseAssemblyString(Assembly, Error, Context);
|
|
ASSERT_TRUE(M) << "Bad assembly?";
|
|
|
|
// Initialize the alias result.
|
|
Triple Trip(M->getTargetTriple());
|
|
TargetLibraryInfoImpl TLII(Trip);
|
|
TargetLibraryInfo TLI(TLII);
|
|
AAResults AA(TLI);
|
|
TypeBasedAAResult TBAAR;
|
|
AA.addAAResult(TBAAR);
|
|
|
|
// Initialize the alias set tracker for the @test function.
|
|
Function *Test = M->getFunction("test");
|
|
ASSERT_NE(Test, nullptr);
|
|
AliasSetTracker AST(AA);
|
|
for (auto &BB : *Test)
|
|
AST.add(BB);
|
|
// There should be 2 disjoint alias sets. 1 from each call.
|
|
ASSERT_EQ((int)AST.getAliasSets().size(), 2);
|
|
|
|
// Directly test aliasesUnknownInst.
|
|
// Now every call instruction should only alias one alias set.
|
|
for (auto &Inst : *Test->begin()) {
|
|
bool FoundAS = false;
|
|
for (AliasSet &AS : AST) {
|
|
if (!Inst.mayReadOrWriteMemory())
|
|
continue;
|
|
if (!AS.aliasesUnknownInst(&Inst, AA))
|
|
continue;
|
|
ASSERT_NE(FoundAS, true);
|
|
FoundAS = true;
|
|
}
|
|
}
|
|
}
|