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//===- unittests/IR/ModuleTest.cpp - Module unit tests --------------------===//
//
// 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/IR/Module.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/ModuleSummaryIndex.h"
#include "llvm/Pass.h"
#include "llvm/Support/RandomNumberGenerator.h"
#include "llvm/Support/SourceMgr.h"
#include "gtest/gtest.h"
#include <random>
using namespace llvm;
namespace {
bool sortByName(const GlobalVariable &L, const GlobalVariable &R) {
return L.getName() < R.getName();
}
bool sortByNameReverse(const GlobalVariable &L, const GlobalVariable &R) {
return sortByName(R, L);
}
TEST(ModuleTest, sortGlobalsByName) {
LLVMContext Context;
for (auto compare : {&sortByName, &sortByNameReverse}) {
Module M("M", Context);
Type *T = Type::getInt8Ty(Context);
GlobalValue::LinkageTypes L = GlobalValue::ExternalLinkage;
(void)new GlobalVariable(M, T, false, L, nullptr, "A");
(void)new GlobalVariable(M, T, false, L, nullptr, "F");
(void)new GlobalVariable(M, T, false, L, nullptr, "G");
(void)new GlobalVariable(M, T, false, L, nullptr, "E");
(void)new GlobalVariable(M, T, false, L, nullptr, "B");
(void)new GlobalVariable(M, T, false, L, nullptr, "H");
(void)new GlobalVariable(M, T, false, L, nullptr, "C");
(void)new GlobalVariable(M, T, false, L, nullptr, "D");
// Sort the globals by name.
EXPECT_FALSE(std::is_sorted(M.global_begin(), M.global_end(), compare));
M.getGlobalList().sort(compare);
EXPECT_TRUE(std::is_sorted(M.global_begin(), M.global_end(), compare));
}
}
TEST(ModuleTest, randomNumberGenerator) {
LLVMContext Context;
static char ID;
struct DummyPass : ModulePass {
DummyPass() : ModulePass(ID) {}
bool runOnModule(Module &) override { return true; }
} DP;
Module M("R", Context);
std::uniform_int_distribution<int> dist;
const size_t NBCheck = 10;
std::array<int, NBCheck> RandomStreams[2];
for (auto &RandomStream : RandomStreams) {
std::unique_ptr<RandomNumberGenerator> RNG = M.createRNG(DP.getPassName());
std::generate(RandomStream.begin(), RandomStream.end(),
[&]() { return dist(*RNG); });
}
EXPECT_TRUE(std::equal(RandomStreams[0].begin(), RandomStreams[0].end(),
RandomStreams[1].begin()));
}
TEST(ModuleTest, setModuleFlag) {
LLVMContext Context;
Module M("M", Context);
StringRef Key = "Key";
Metadata *Val1 = MDString::get(Context, "Val1");
Metadata *Val2 = MDString::get(Context, "Val2");
EXPECT_EQ(nullptr, M.getModuleFlag(Key));
M.setModuleFlag(Module::ModFlagBehavior::Error, Key, Val1);
EXPECT_EQ(Val1, M.getModuleFlag(Key));
M.setModuleFlag(Module::ModFlagBehavior::Error, Key, Val2);
EXPECT_EQ(Val2, M.getModuleFlag(Key));
}
const char *IRString = R"IR(
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
!2 = !{!"ProfileFormat", !"SampleProfile"}
!3 = !{!"TotalCount", i64 10000}
!4 = !{!"MaxCount", i64 10}
!5 = !{!"MaxInternalCount", i64 1}
!6 = !{!"MaxFunctionCount", i64 1000}
!7 = !{!"NumCounts", i64 200}
!8 = !{!"NumFunctions", i64 3}
!9 = !{!"DetailedSummary", !10}
!10 = !{!11, !12, !13}
!11 = !{i32 10000, i64 1000, i32 1}
!12 = !{i32 990000, i64 300, i32 10}
!13 = !{i32 999999, i64 5, i32 100}
)IR";
TEST(ModuleTest, setProfileSummary) {
SMDiagnostic Err;
LLVMContext Context;
std::unique_ptr<Module> M = parseAssemblyString(IRString, Err, Context);
auto *PS = ProfileSummary::getFromMD(M->getProfileSummary(/*IsCS*/ false));
EXPECT_NE(nullptr, PS);
EXPECT_FALSE(PS->isPartialProfile());
PS->setPartialProfile(true);
M->setProfileSummary(PS->getMD(Context), ProfileSummary::PSK_Sample);
delete PS;
PS = ProfileSummary::getFromMD(M->getProfileSummary(/*IsCS*/ false));
EXPECT_NE(nullptr, PS);
EXPECT_EQ(true, PS->isPartialProfile());
delete PS;
}
TEST(ModuleTest, setPartialSampleProfileRatio) {
const char *IRString = R"IR(
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9, !10, !11}
!2 = !{!"ProfileFormat", !"SampleProfile"}
!3 = !{!"TotalCount", i64 10000}
!4 = !{!"MaxCount", i64 10}
!5 = !{!"MaxInternalCount", i64 1}
!6 = !{!"MaxFunctionCount", i64 1000}
!7 = !{!"NumCounts", i64 200}
!8 = !{!"NumFunctions", i64 3}
!9 = !{!"IsPartialProfile", i64 1}
!10 = !{!"PartialProfileRatio", double 0.0}
!11 = !{!"DetailedSummary", !12}
!12 = !{!13, !14, !15}
!13 = !{i32 10000, i64 1000, i32 1}
!14 = !{i32 990000, i64 300, i32 10}
!15 = !{i32 999999, i64 5, i32 100}
)IR";
SMDiagnostic Err;
LLVMContext Context;
std::unique_ptr<Module> M = parseAssemblyString(IRString, Err, Context);
ModuleSummaryIndex Index(/*HaveGVs*/ false);
const unsigned BlockCount = 100;
const unsigned NumCounts = 200;
Index.setBlockCount(BlockCount);
M->setPartialSampleProfileRatio(Index);
double Ratio = (double)BlockCount / NumCounts;
std::unique_ptr<ProfileSummary> ProfileSummary(
ProfileSummary::getFromMD(M->getProfileSummary(/*IsCS*/ false)));
EXPECT_EQ(Ratio, ProfileSummary->getPartialProfileRatio());
}
} // end namespace
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