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      1 //===- unittest/ProfileData/InstrProfTest.cpp -------------------------------=//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 #include "llvm/ProfileData/InstrProfReader.h"
     11 #include "llvm/ProfileData/InstrProfWriter.h"
     12 #include "gtest/gtest.h"
     13 
     14 #include <cstdarg>
     15 
     16 using namespace llvm;
     17 
     18 static ::testing::AssertionResult NoError(std::error_code EC) {
     19   if (!EC)
     20     return ::testing::AssertionSuccess();
     21   return ::testing::AssertionFailure() << "error " << EC.value()
     22                                        << ": " << EC.message();
     23 }
     24 
     25 static ::testing::AssertionResult ErrorEquals(std::error_code Expected,
     26                                               std::error_code Found) {
     27   if (Expected == Found)
     28     return ::testing::AssertionSuccess();
     29   return ::testing::AssertionFailure() << "error " << Found.value()
     30                                        << ": " << Found.message();
     31 }
     32 
     33 namespace {
     34 
     35 struct InstrProfTest : ::testing::Test {
     36   InstrProfWriter Writer;
     37   std::unique_ptr<IndexedInstrProfReader> Reader;
     38 
     39   void readProfile(std::unique_ptr<MemoryBuffer> Profile) {
     40     auto ReaderOrErr = IndexedInstrProfReader::create(std::move(Profile));
     41     ASSERT_TRUE(NoError(ReaderOrErr.getError()));
     42     Reader = std::move(ReaderOrErr.get());
     43   }
     44 };
     45 
     46 TEST_F(InstrProfTest, write_and_read_empty_profile) {
     47   auto Profile = Writer.writeBuffer();
     48   readProfile(std::move(Profile));
     49   ASSERT_TRUE(Reader->begin() == Reader->end());
     50 }
     51 
     52 TEST_F(InstrProfTest, write_and_read_one_function) {
     53   Writer.addFunctionCounts("foo", 0x1234, {1, 2, 3, 4});
     54   auto Profile = Writer.writeBuffer();
     55   readProfile(std::move(Profile));
     56 
     57   auto I = Reader->begin(), E = Reader->end();
     58   ASSERT_TRUE(I != E);
     59   ASSERT_EQ(StringRef("foo"), I->Name);
     60   ASSERT_EQ(0x1234U, I->Hash);
     61   ASSERT_EQ(4U, I->Counts.size());
     62   ASSERT_EQ(1U, I->Counts[0]);
     63   ASSERT_EQ(2U, I->Counts[1]);
     64   ASSERT_EQ(3U, I->Counts[2]);
     65   ASSERT_EQ(4U, I->Counts[3]);
     66   ASSERT_TRUE(++I == E);
     67 }
     68 
     69 TEST_F(InstrProfTest, get_function_counts) {
     70   Writer.addFunctionCounts("foo", 0x1234, {1, 2});
     71   auto Profile = Writer.writeBuffer();
     72   readProfile(std::move(Profile));
     73 
     74   std::vector<uint64_t> Counts;
     75   ASSERT_TRUE(NoError(Reader->getFunctionCounts("foo", 0x1234, Counts)));
     76   ASSERT_EQ(2U, Counts.size());
     77   ASSERT_EQ(1U, Counts[0]);
     78   ASSERT_EQ(2U, Counts[1]);
     79 
     80   std::error_code EC;
     81   EC = Reader->getFunctionCounts("foo", 0x5678, Counts);
     82   ASSERT_TRUE(ErrorEquals(instrprof_error::hash_mismatch, EC));
     83 
     84   EC = Reader->getFunctionCounts("bar", 0x1234, Counts);
     85   ASSERT_TRUE(ErrorEquals(instrprof_error::unknown_function, EC));
     86 }
     87 
     88 TEST_F(InstrProfTest, get_max_function_count) {
     89   Writer.addFunctionCounts("foo", 0x1234, {1ULL << 31, 2});
     90   Writer.addFunctionCounts("bar", 0, {1ULL << 63});
     91   Writer.addFunctionCounts("baz", 0x5678, {0, 0, 0, 0});
     92   auto Profile = Writer.writeBuffer();
     93   readProfile(std::move(Profile));
     94 
     95   ASSERT_EQ(1ULL << 63, Reader->getMaximumFunctionCount());
     96 }
     97 
     98 } // end anonymous namespace
     99