DirectXShaderCompiler/tools/clang/unittests/HLSL/LinkerTest.cpp

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
// LinkerTest.cpp                                                          //
// Copyright (C) Microsoft Corporation. All rights reserved.                 //
// This file is distributed under the University of Illinois Open Source     //
// License. See LICENSE.TXT for details.                                     //
//                                                                           //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include <memory>
#include <vector>
#include <string>
#include "llvm/ADT/ArrayRef.h"
#include "CompilationResult.h"
#include "HLSLTestData.h"
#include "llvm/Support/ManagedStatic.h"

#include <fstream>

#include "WexTestClass.h"
#include "HlslTestUtils.h"
#include "dxc/dxcapi.h"
#include "DxcTestUtils.h"

using namespace std;
using namespace hlsl;
using namespace llvm;

// The test fixture.
class LinkerTest
{
public:
  BEGIN_TEST_CLASS(LinkerTest)
    TEST_CLASS_PROPERTY(L"Parallel", L"true")
    TEST_METHOD_PROPERTY(L"Priority", L"0")
  END_TEST_CLASS()

  TEST_CLASS_SETUP(InitSupport);

  TEST_METHOD(RunLinkResource);
  TEST_METHOD(RunLinkAllProfiles);
  TEST_METHOD(RunLinkFailNoDefine);
  TEST_METHOD(RunLinkFailReDefine);
  TEST_METHOD(RunLinkGlobalInit);
  TEST_METHOD(RunLinkNoAlloca);
  TEST_METHOD(RunLinkMatArrayParam);
  TEST_METHOD(RunLinkMatParam);
  TEST_METHOD(RunLinkMatParamToLib);
  TEST_METHOD(RunLinkResRet);
  TEST_METHOD(RunLinkToLib);
  TEST_METHOD(RunLinkToLibExport);
  TEST_METHOD(RunLinkFailReDefineGlobal);
  TEST_METHOD(RunLinkFailProfileMismatch);
  TEST_METHOD(RunLinkFailEntryNoProps);
  TEST_METHOD(RunLinkFailSelectRes);
  TEST_METHOD(RunLinkToLibWithUnresolvedFunctions);
  TEST_METHOD(RunLinkToLibWithUnresolvedFunctionsExports);
  TEST_METHOD(RunLinkToLibWithExportNamesSwapped);
  TEST_METHOD(RunLinkToLibWithExportCollision);
  TEST_METHOD(RunLinkToLibWithUnusedExport);
  TEST_METHOD(RunLinkToLibWithNoExports);
  TEST_METHOD(RunLinkWithPotentialIntrinsicNameCollisions);


  dxc::DxcDllSupport m_dllSupport;
  VersionSupportInfo m_ver;

  void CreateLinker(IDxcLinker **pResultLinker) {
    VERIFY_SUCCEEDED(
        m_dllSupport.CreateInstance(CLSID_DxcLinker, pResultLinker));
  }

  void CompileLib(LPCWSTR filename, IDxcBlob **pResultBlob, LPCWSTR *pArguments,
                  UINT32 argCount) {
    std::wstring fullPath = hlsl_test::GetPathToHlslDataFile(filename);
    CComPtr<IDxcBlobEncoding> pSource;
    CComPtr<IDxcLibrary> pLibrary;
    VERIFY_SUCCEEDED(m_dllSupport.CreateInstance(CLSID_DxcLibrary, &pLibrary));

    VERIFY_SUCCEEDED(
        pLibrary->CreateBlobFromFile(fullPath.c_str(), nullptr, &pSource));

    CComPtr<IDxcCompiler> pCompiler;
    CComPtr<IDxcOperationResult> pResult;
    CComPtr<IDxcBlob> pProgram;

    CA2W shWide("lib_6_1", CP_UTF8);
    VERIFY_SUCCEEDED(
        m_dllSupport.CreateInstance(CLSID_DxcCompiler, &pCompiler));
    VERIFY_SUCCEEDED(pCompiler->Compile(pSource, L"hlsl.hlsl", L"", shWide,
                                        pArguments, argCount, nullptr, 0,
                                        nullptr, &pResult));
    VERIFY_SUCCEEDED(pResult->GetResult(pResultBlob));
  }

  void CompileLib(LPCWSTR filename, IDxcBlob **pResourceBlob) {
    CompileLib(filename, pResourceBlob, nullptr, 0);
  }

  void RegisterDxcModule(LPCWSTR pLibName, IDxcBlob *pBlob,
                         IDxcLinker *pLinker) {
    VERIFY_SUCCEEDED(pLinker->RegisterLibrary(pLibName, pBlob));
  }

  void Link(LPCWSTR pEntryName, LPCWSTR pShaderModel, IDxcLinker *pLinker,
            ArrayRef<LPCWSTR> libNames, llvm::ArrayRef<LPCSTR> pCheckMsgs,
            llvm::ArrayRef<LPCSTR> pCheckNotMsgs,
            llvm::ArrayRef<LPCWSTR> pArguments = {}) {
    CComPtr<IDxcOperationResult> pResult;
    VERIFY_SUCCEEDED(pLinker->Link(pEntryName, pShaderModel, libNames.data(),
                                   libNames.size(),
                                   pArguments.data(), pArguments.size(),
                                   &pResult));
    CComPtr<IDxcBlob> pProgram;
    CheckOperationSucceeded(pResult, &pProgram);

    CComPtr<IDxcCompiler> pCompiler;
    CComPtr<IDxcBlobEncoding> pDisassembly;

    VERIFY_SUCCEEDED(
        m_dllSupport.CreateInstance(CLSID_DxcCompiler, &pCompiler));
    VERIFY_SUCCEEDED(pCompiler->Disassemble(pProgram, &pDisassembly));
    std::string IR = BlobToUtf8(pDisassembly);
    CheckMsgs(IR.c_str(), IR.size(), pCheckMsgs.data(), pCheckMsgs.size(), false);
    CheckNotMsgs(IR.c_str(), IR.size(), pCheckNotMsgs.data(), pCheckNotMsgs.size(), false);
  }

  void LinkCheckMsg(LPCWSTR pEntryName, LPCWSTR pShaderModel, IDxcLinker *pLinker,
            ArrayRef<LPCWSTR> libNames, llvm::ArrayRef<LPCSTR> pErrorMsgs,
            llvm::ArrayRef<LPCWSTR> pArguments = {}) {
    CComPtr<IDxcOperationResult> pResult;
    VERIFY_SUCCEEDED(pLinker->Link(pEntryName, pShaderModel,
                                   libNames.data(), libNames.size(),
                                   pArguments.data(), pArguments.size(),
                                   &pResult));
    CheckOperationResultMsgs(pResult, pErrorMsgs.data(), pErrorMsgs.size(),
                             false, false);
  }
};

bool LinkerTest::InitSupport() {
  if (!m_dllSupport.IsEnabled()) {
    VERIFY_SUCCEEDED(m_dllSupport.Initialize());
    m_ver.Initialize(m_dllSupport);
  }

  return true;
}

TEST_F(LinkerTest, RunLinkResource) {
  CComPtr<IDxcBlob> pResLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_resource2.hlsl", &pResLib);
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_cs_entry.hlsl", &pEntryLib);
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);
  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libResName = L"res";
  RegisterDxcModule(libResName, pResLib, pLinker);

  Link(L"entry", L"cs_6_0", pLinker, {libResName, libName}, {} ,{});
}

TEST_F(LinkerTest, RunLinkAllProfiles) {
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_entries2.hlsl", &pEntryLib, option, 1);
  RegisterDxcModule(libName, pEntryLib, pLinker);

  Link(L"vs_main", L"vs_6_0", pLinker, {libName}, {},{});
  Link(L"hs_main", L"hs_6_0", pLinker, {libName}, {},{});
  Link(L"ds_main", L"ds_6_0", pLinker, {libName}, {},{});
  Link(L"gs_main", L"gs_6_0", pLinker, {libName}, {},{});
  Link(L"ps_main", L"ps_6_0", pLinker, {libName}, {},{});

  CComPtr<IDxcBlob> pResLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_resource2.hlsl", &pResLib);

  LPCWSTR libResName = L"res";
  RegisterDxcModule(libResName, pResLib, pLinker);
  Link(L"cs_main", L"cs_6_0", pLinker, {libName, libResName}, {},{});
}

TEST_F(LinkerTest, RunLinkFailNoDefine) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_cs_entry.hlsl", &pEntryLib);
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LinkCheckMsg(L"entry", L"cs_6_0", pLinker, {libName},
               {"Cannot find definition of function"});
}

TEST_F(LinkerTest, RunLinkFailReDefine) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_cs_entry.hlsl", &pEntryLib);
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"entry2";
  RegisterDxcModule(libName2, pEntryLib, pLinker);

  LinkCheckMsg(L"entry", L"cs_6_0", pLinker, {libName, libName2},
               {"Definition already exists for function"});
}

TEST_F(LinkerTest, RunLinkGlobalInit) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_global.hlsl", &pEntryLib);
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  Link(L"test", L"ps_6_0", pLinker, {libName},
       // Make sure cbuffer load is generated.
       {"dx.op.cbufferLoad"},{});
}

TEST_F(LinkerTest, RunLinkFailReDefineGlobal) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_global2.hlsl", &pEntryLib);

  CComPtr<IDxcBlob> pLib0;
  CompileLib(L"..\\CodeGenHLSL\\lib_global3.hlsl", &pLib0);

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\lib_global4.hlsl", &pLib1);


  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName1 = L"lib0";
  RegisterDxcModule(libName1, pLib0, pLinker);

  LPCWSTR libName2 = L"lib1";
  RegisterDxcModule(libName2, pLib1, pLinker);

  LinkCheckMsg(L"entry", L"cs_6_0", pLinker, {libName, libName1, libName2},
               {"Definition already exists for global variable", "Resource already exists"});
}

TEST_F(LinkerTest, RunLinkFailProfileMismatch) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_global.hlsl", &pEntryLib);
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LinkCheckMsg(L"test", L"cs_6_0", pLinker, {libName},
               {"Profile mismatch between entry function and target profile"});
}

TEST_F(LinkerTest, RunLinkFailEntryNoProps) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_global.hlsl", &pEntryLib);
  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"entry";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LinkCheckMsg(L"\01?update@@YAXXZ", L"cs_6_0", pLinker, {libName},
               {"Cannot find function property for entry function"});
}

TEST_F(LinkerTest, RunLinkNoAlloca) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_no_alloca.hlsl", &pEntryLib);
  CComPtr<IDxcBlob> pLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_no_alloca.h", &pLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);

  Link(L"ps_main", L"ps_6_0", pLinker, {libName, libName2}, {}, {"alloca"});
}

TEST_F(LinkerTest, RunLinkMatArrayParam) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\quick-test\\lib_mat_entry.hlsl", &pEntryLib);
  CComPtr<IDxcBlob> pLib;
  CompileLib(L"..\\CodeGenHLSL\\quick-test\\lib_mat_cast.hlsl", &pLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);

  Link(L"main", L"ps_6_0", pLinker, {libName, libName2},
       {"alloca [24 x float]", "getelementptr [12 x float], [12 x float]*"},
       {});
}

TEST_F(LinkerTest, RunLinkMatParam) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\quick-test\\lib_mat_entry2.hlsl", &pEntryLib);
  CComPtr<IDxcBlob> pLib;
  CompileLib(L"..\\CodeGenHLSL\\quick-test\\lib_mat_cast2.hlsl", &pLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);

  Link(L"main", L"ps_6_0", pLinker, {libName, libName2},
       {"alloca [12 x float]"},
       {});
}

TEST_F(LinkerTest, RunLinkMatParamToLib) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\quick-test\\lib_mat_entry2.hlsl", &pEntryLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  Link(L"", L"lib_6_3", pLinker, {libName},
       // The bitcast cannot be removed because user function call use it as
       // argument.
       {"bitcast <12 x float>* %1 to %class.matrix.float.4.3*"}, {});
}

TEST_F(LinkerTest, RunLinkResRet) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_out_param_res.hlsl", &pEntryLib);
  CComPtr<IDxcBlob> pLib;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_out_param_res_imp.hlsl", &pLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);

  Link(L"test", L"ps_6_0", pLinker, {libName, libName2}, {}, {"alloca"});
}

TEST_F(LinkerTest, RunLinkToLib) {
  LPCWSTR option[] = {L"-Zi"};

  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_out_param_res.hlsl",
             &pEntryLib, option, 1);
  CComPtr<IDxcBlob> pLib;
  CompileLib(
      L"..\\CodeGenHLSL\\shader-compat-suite\\lib_out_param_res_imp.hlsl",
      &pLib, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);

  Link(L"", L"lib_6_2", pLinker, {libName, libName2}, {"!llvm.dbg.cu"}, {});
}

TEST_F(LinkerTest, RunLinkToLibExport) {
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_out_param_res.hlsl",
             &pEntryLib);
  CComPtr<IDxcBlob> pLib;
  CompileLib(
      L"..\\CodeGenHLSL\\shader-compat-suite\\lib_out_param_res_imp.hlsl",
      &pLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"ps_main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);
  Link(L"", L"lib_6_3", pLinker, {libName, libName2},
    { "@\"\\01?renamed_test@@","@\"\\01?cloned_test@@","@test" },
    { "@\"\\01?GetBuf", "@renamed_test", "@cloned_test" },
    {L"-exports", L"renamed_test,cloned_test=\\01?test@@YA?AV?$vector@M$03@@I@Z;test"});
}

TEST_F(LinkerTest, RunLinkFailSelectRes) {
  if (m_ver.SkipDxilVersion(1, 3)) return;
  CComPtr<IDxcBlob> pEntryLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_select_res_entry.hlsl", &pEntryLib);
  CComPtr<IDxcBlob> pLib;
  CompileLib(L"..\\CodeGenHLSL\\lib_select_res.hlsl", &pLib);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName = L"main";
  RegisterDxcModule(libName, pEntryLib, pLinker);

  LPCWSTR libName2 = L"test";
  RegisterDxcModule(libName2, pLib, pLinker);

  LinkCheckMsg(L"main", L"ps_6_0", pLinker, {libName, libName2},
               {"Local resource must map to global resource"});
}

TEST_F(LinkerTest, RunLinkToLibWithUnresolvedFunctions) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func1.hlsl",
             &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func2.hlsl",
             &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  Link(L"", L"lib_6_2", pLinker, { libName1, libName2 }, {
    "declare float @\"\\01?external_fn1@@YAMXZ\"()",
    "declare float @\"\\01?external_fn2@@YAMXZ\"()",
    "declare float @\"\\01?external_fn@@YAMXZ\"()",
    "define float @\"\\01?lib1_fn@@YAMXZ\"()",
    "define float @\"\\01?lib2_fn@@YAMXZ\"()",
    "define float @\"\\01?call_lib1@@YAMXZ\"()",
    "define float @\"\\01?call_lib2@@YAMXZ\"()"
    }, {"declare float @\"\\01?unused_fn1", "declare float @\"\\01?unused_fn2"});
}

TEST_F(LinkerTest, RunLinkToLibWithUnresolvedFunctionsExports) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func1.hlsl",
    &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func2.hlsl",
    &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  Link(L"", L"lib_6_3", pLinker, { libName1, libName2 },
    { "declare float @\"\\01?external_fn1@@YAMXZ\"()",
      "declare float @\"\\01?external_fn2@@YAMXZ\"()",
      "declare float @\"\\01?external_fn@@YAMXZ\"()",
      "define float @\"\\01?renamed_lib1@@YAMXZ\"()",
      "define float @\"\\01?call_lib2@@YAMXZ\"()"
    },
    { "float @\"\\01?unused_fn1", "float @\"\\01?unused_fn2",
      "float @\"\\01?lib1_fn", "float @\"\\01?lib2_fn",
      "float @\"\\01?call_lib1"
    },
    { L"-exports", L"renamed_lib1=call_lib1",
      L"-exports", L"call_lib2"
    });
}

TEST_F(LinkerTest, RunLinkToLibWithExportNamesSwapped) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func1.hlsl",
    &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func2.hlsl",
    &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  Link(L"", L"lib_6_3", pLinker, { libName1, libName2 },
    { "declare float @\"\\01?external_fn1@@YAMXZ\"()",
      "declare float @\"\\01?external_fn2@@YAMXZ\"()",
      "declare float @\"\\01?external_fn@@YAMXZ\"()",
      "define float @\"\\01?call_lib1@@YAMXZ\"()",
      "define float @\"\\01?call_lib2@@YAMXZ\"()"
    },
    { "float @\"\\01?unused_fn1", "float @\"\\01?unused_fn2",
      "float @\"\\01?lib1_fn", "float @\"\\01?lib2_fn"
    },
    { L"-exports", L"call_lib2=call_lib1;call_lib1=call_lib2" });
}

TEST_F(LinkerTest, RunLinkToLibWithExportCollision) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func1.hlsl",
    &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func2.hlsl",
    &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  LinkCheckMsg(L"", L"lib_6_3", pLinker, { libName1, libName2 },
    { "Export name collides with another export: \\01?call_lib2@@YAMXZ"
    },
    { L"-exports", L"call_lib2=call_lib1;call_lib2" });
}

TEST_F(LinkerTest, RunLinkToLibWithUnusedExport) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func1.hlsl",
    &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func2.hlsl",
    &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  LinkCheckMsg(L"", L"lib_6_3", pLinker, { libName1, libName2 },
    { "Could not find target for export: call_lib"
    },
    { L"-exports", L"call_lib2=call_lib;call_lib1" });
}

TEST_F(LinkerTest, RunLinkToLibWithNoExports) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func1.hlsl",
    &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\lib_unresolved_func2.hlsl",
    &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  LinkCheckMsg(L"", L"lib_6_3", pLinker, { libName1, libName2 },
    { "Library has no functions to export"
    },
    { L"-exports", L"call_lib2=call_lib" });
}

TEST_F(LinkerTest, RunLinkWithPotentialIntrinsicNameCollisions) {
  LPCWSTR option[] = { L"-Zi" };

  CComPtr<IDxcBlob> pLib1;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\createHandle_multi.hlsl",
    &pLib1, option, 1);
  CComPtr<IDxcBlob> pLib2;
  CompileLib(L"..\\CodeGenHLSL\\shader-compat-suite\\createHandle_multi2.hlsl",
    &pLib2, option, 1);

  CComPtr<IDxcLinker> pLinker;
  CreateLinker(&pLinker);

  LPCWSTR libName1 = L"lib1";
  RegisterDxcModule(libName1, pLib1, pLinker);

  LPCWSTR libName2 = L"lib2";
  RegisterDxcModule(libName2, pLib2, pLinker);

  Link(L"", L"lib_6_2", pLinker, { libName1, libName2 }, {
    "declare %dx.types.Handle @\"dx.op.createHandleForLib.class.Texture2D<vector<float, 4> >\"(i32, %\"class.Texture2D<vector<float, 4> >\")",
    "declare %dx.types.Handle @\"dx.op.createHandleForLib.class.Texture2D<float>\"(i32, %\"class.Texture2D<float>\")"
  }, { });
}