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

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