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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "Compiler/Optimizer/OCLBIConverter.h"
#include "Compiler/IGCPassSupport.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Function.h>
#include <llvm/IR/Intrinsics.h>
#include "common/LLVMWarningsPop.hpp"
#include "Probe/Assertion.h"
using namespace llvm;
using namespace IGC;
using namespace IGC::IGCMD;
// Register pass to igc-opt
#define PASS_FLAG "igc-conv-ocl-to-common"
#define PASS_DESCRIPTION "Convert builtin functions from OpenCL to common GenISA"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
IGC_INITIALIZE_PASS_BEGIN(BuiltinsConverter, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_DEPENDENCY(MetaDataUtilsWrapper)
IGC_INITIALIZE_PASS_END(BuiltinsConverter, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
char BuiltinsConverter::ID = 0;
BuiltinsConverter::BuiltinsConverter(void) : FunctionPass(ID)
{
initializeBuiltinsConverterPass(*PassRegistry::getPassRegistry());
}
bool BuiltinsConverter::fillIndexMap(Function& F)
{
ModuleMetaData* modMD = getAnalysis<MetaDataUtilsWrapper>().getModuleMetaData();
FunctionMetaData* funcMD = &modMD->FuncMD[&F];
ResourceAllocMD* resAllocMD = &funcMD->resAllocMD;
for (Function::arg_iterator arg = F.arg_begin(), e = F.arg_end(); arg != e; ++arg)
{
int argNo = (*arg).getArgNo();
IGC_ASSERT_MESSAGE(resAllocMD->argAllocMDList.size() > 0, "ArgAllocMDList is empty.");
ArgAllocMD* argAlloc = &resAllocMD->argAllocMDList[argNo];
if (argAlloc->type == OtherResourceType)
{
// Other resource type has no valid index and is not needed in the map.
continue;
}
m_argIndexMap[&(*arg)] = CImagesBI::ParamInfo(
argAlloc->indexType,
(ResourceTypeEnum)argAlloc->type,
(ResourceExtensionTypeEnum)argAlloc->extensionType);
}
// The sampler arguments have already been allocated indices by the ResourceAllocator.
// So, the first sampler we can allocate here may not be 0, but is the number of
// already allocated indices.
m_nextSampler = resAllocMD->samplersNumType;
return true;
}
void BuiltinsConverter::visitCallInst(llvm::CallInst& CI)
{
Function* callee = CI.getCalledFunction();
if (!callee) return;
bool resolved = m_pResolve->resolveBI(&CI);
if (resolved)
{
CI.eraseFromParent();
}
}
bool BuiltinsConverter::runOnFunction(Function& F)
{
m_argIndexMap.clear();
m_inlineIndexMap.clear();
// Make sure we are running on a kernel.
auto ctx = getAnalysis<CodeGenContextWrapper>().getCodeGenContext();
ModuleMetaData* modMD = ctx->getModuleMetaData();
if (ctx->getMetaDataUtils()->findFunctionsInfoItem(&F) == ctx->getMetaDataUtils()->end_FunctionsInfo() ||
modMD->FuncMD.find(&F) == modMD->FuncMD.end())
{
return false;
}
if (!fillIndexMap(F))
return false;
CBuiltinsResolver resolve(&m_argIndexMap, &m_inlineIndexMap, &m_nextSampler, ctx);
m_pResolve = &resolve;
visit(F);
return true;
}
extern "C" FunctionPass* createBuiltinsConverterPass(void)
{
return new BuiltinsConverter();
}
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