llvm/unittests/tools/llvm-profgen/ContextCompressionTest.cpp

   1 //===-- ContextCompressionTest.cpp -------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 #include "../tools/llvm-profgen/ProfileGenerator.h"
   9 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
  10 #include "gtest/gtest.h"
  11
  12 using namespace llvm;
  13 using namespace sampleprof;
  14
  15 TEST(TestCompression, TestNoSizeLimit1) {
  16   SmallVector<std::string, 16> Context = {"a", "b", "c", "a", "b", "c"};
  17   SmallVector<std::string, 16> Expect = {"a", "b", "c"};
  18   CSProfileGenerator::compressRecursionContext(Context, -1);
  19   EXPECT_TRUE(std::equal(Context.begin(), Context.end(), Expect.begin()));
  20 }
  21
  22 TEST(TestCompression, TestNoSizeLimit2) {
  23   SmallVector<std::string, 16> Context = {"m", "a", "a", "b", "c", "a",
  24                                           "b", "c", "b", "c", "d"};
  25   SmallVector<std::string, 16> Expect = {"m", "a", "b", "c", "d"};
  26   CSProfileGenerator::compressRecursionContext(Context, -1);
  27   EXPECT_TRUE(std::equal(Context.begin(), Context.end(), Expect.begin()));
  28 }
  29
  30 TEST(TestCompression, TestMaxDedupSize) {
  31   SmallVector<std::string, 16> Context = {"m", "a", "a", "b", "c", "a",
  32                                           "b", "c", "b", "c", "d"};
  33   SmallVector<std::string, 16> Expect = {"m", "a", "b", "c",
  34                                          "a", "b", "c", "d"};
  35   CSProfileGenerator::compressRecursionContext(Context, 2);
  36   EXPECT_TRUE(std::equal(Context.begin(), Context.end(), Expect.begin()));
  37 }