llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp

   1 //===- llvm/unittest/CodeGen/AMDGPUMetadataTest.cpp -----------------------===//
   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 /// \file
  10 /// Test that amdgpu metadata that is added in a pass is read by the asm emitter
  11 /// and stored in the ELF.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm/IR/LegacyPassManager.h"
  16 #include "llvm/IR/Module.h"
  17 #include "llvm/MC/TargetRegistry.h"
  18 #include "llvm/Pass.h"
  19 #include "llvm/Support/TargetSelect.h"
  20 #include "llvm/Target/TargetMachine.h"
  21 #include "gtest/gtest.h"
  22
  23 namespace llvm {
  24
  25 namespace {
  26 // Pass that adds global metadata
  27 struct AddMetadataPass : public ModulePass {
  28   std::string PalMDString;
  29
  30 public:
  31   static char ID;
  32   AddMetadataPass(std::string PalMDString)
  33       : ModulePass(ID), PalMDString(PalMDString) {}
  34   bool runOnModule(Module &M) override {
  35     auto &Ctx = M.getContext();
  36     auto *MD = M.getOrInsertNamedMetadata("amdgpu.pal.metadata.msgpack");
  37     auto *PalMD = MDString::get(Ctx, PalMDString);
  38     auto *TMD = MDTuple::get(Ctx, {PalMD});
  39     MD->addOperand(TMD);
  40     return true;
  41   }
  42 };
  43 char AddMetadataPass::ID = 0;
  44 } // end anonymous namespace
  45
  46 class AMDGPUSelectionDAGTest : public testing::Test {
  47 protected:
  48   static void SetUpTestCase() {
  49     InitializeAllTargets();
  50     InitializeAllTargetMCs();
  51   }
  52
  53   void SetUp() override {
  54     std::string Error;
  55     const Target *T = TargetRegistry::lookupTarget("amdgcn--amdpal", Error);
  56     if (!T)
  57       GTEST_SKIP();
  58
  59     TargetOptions Options;
  60     TM = std::unique_ptr<TargetMachine>(T->createTargetMachine(
  61         "amdgcn--amdpal", "gfx1010", "", Options, std::nullopt));
  62     if (!TM)
  63       GTEST_SKIP();
  64
  65     LLVMContext Context;
  66     std::unique_ptr<Module> M(new Module("TestModule", Context));
  67     M->setDataLayout(TM->createDataLayout());
  68
  69     legacy::PassManager PM;
  70     PM.add(new AddMetadataPass(PalMDString));
  71     raw_svector_ostream OutStream(Elf);
  72     if (TM->addPassesToEmitFile(PM, OutStream, nullptr,
  73                                 CodeGenFileType::ObjectFile))
  74       report_fatal_error("Target machine cannot emit a file of this type");
  75
  76     PM.run(*M);
  77   }
  78
  79   static std::string PalMDString;
  80
  81   LLVMContext Context;
  82   std::unique_ptr<TargetMachine> TM;
  83   std::unique_ptr<Module> M;
  84   SmallString<1024> Elf;
  85 };
  86 std::string AMDGPUSelectionDAGTest::PalMDString =
  87     "\x81\xB0"
  88     "amdpal.pipelines\x91\x81\xA4.api\xA6Vulkan";
  89
  90 TEST_F(AMDGPUSelectionDAGTest, checkMetadata) {
  91   // Check that the string is contained in the ELF
  92   EXPECT_NE(Elf.find("Vulkan"), std::string::npos);
  93 }
  94
  95 } // end namespace llvm