unittests/tools/llvm-exegesis/PowerPC/TargetTest.cpp

   1 //===-- TargetTest.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
   9 #include "Target.h"
  10
  11 #include <cassert>
  12 #include <memory>
  13
  14 #include "MCTargetDesc/PPCMCTargetDesc.h"
  15 #include "llvm/Support/TargetRegistry.h"
  16 #include "llvm/Support/TargetSelect.h"
  17 #include "gmock/gmock.h"
  18 #include "gtest/gtest.h"
  19
  20 namespace llvm{
  21 namespace exegesis {
  22
  23 void InitializePowerPCExegesisTarget();
  24
  25 namespace {
  26
  27 using testing::NotNull;
  28 using testing::IsEmpty;
  29 using testing::Not;
  30
  31 constexpr const char kTriple[] = "powerpc64le-unknown-linux";
  32
  33 class PowerPCTargetTest : public ::testing::Test {
  34 protected:
  35   PowerPCTargetTest()
  36       : ExegesisTarget_(ExegesisTarget::lookup(llvm::Triple(kTriple))) {
  37     EXPECT_THAT(ExegesisTarget_, NotNull());
  38     std::string error;
  39     Target_ = llvm::TargetRegistry::lookupTarget(kTriple, error);
  40     EXPECT_THAT(Target_, NotNull());
  41   }
  42   static void SetUpTestCase() {
  43     LLVMInitializePowerPCTargetInfo();
  44     LLVMInitializePowerPCTarget();
  45     LLVMInitializePowerPCTargetMC();
  46     InitializePowerPCExegesisTarget();
  47   }
  48
  49   const llvm::Target *Target_;
  50   const ExegesisTarget *const ExegesisTarget_;
  51 };
  52
  53 TEST_F(PowerPCTargetTest, SetRegToConstant) {
  54   const std::unique_ptr<llvm::MCSubtargetInfo> STI(
  55       Target_->createMCSubtargetInfo(kTriple, "generic", ""));
  56   const auto Insts =
  57       ExegesisTarget_->setRegTo(*STI, llvm::PPC::X0, llvm::APInt());
  58   EXPECT_THAT(Insts, Not(IsEmpty()));
  59 }
  60
  61 TEST_F(PowerPCTargetTest, DefaultPfmCounters) {
  62   const std::string Expected = "CYCLES";
  63   EXPECT_EQ(ExegesisTarget_->getPfmCounters("").CycleCounter, Expected);
  64   EXPECT_EQ(ExegesisTarget_->getPfmCounters("unknown_cpu").CycleCounter,
  65             Expected);
  66 }
  67
  68 } // namespace
  69 } // namespace exegesis
  70 } // namespace llvm