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71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*========================== begin_copyright_notice ============================
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Copyright (C) 2023 Intel Corporation
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SPDX-License-Identifier: MIT
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============================= end_copyright_notice ===========================*/
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#include "common/LLVMWarningsPush.hpp"
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#include <llvm/Pass.h>
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#include "common/LLVMWarningsPop.hpp"
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#include "Compiler/CISACodeGen/DpasScan.hpp"
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#include "Compiler/CISACodeGen/WIAnalysis.hpp"
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#include "Compiler/IGCPassSupport.h"
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#include "Compiler/MetaDataUtilsWrapper.h"
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#include "GenISAIntrinsics/GenIntrinsicInst.h"
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using namespace llvm;
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using namespace IGC;
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// Register pass to igc-opt
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#define PASS_FLAG "igc-dpas-scan"
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#define PASS_DESCRIPTION "Scans for dpas in conditional block to disable EU fusion feature"
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#define PASS_CFG_ONLY false
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#define PASS_ANALYSIS false
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IGC_INITIALIZE_PASS_BEGIN(DpasScan, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
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IGC_INITIALIZE_PASS_DEPENDENCY(WIAnalysis)
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IGC_INITIALIZE_PASS_DEPENDENCY(MetaDataUtilsWrapper)
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IGC_INITIALIZE_PASS_END(DpasScan, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
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char DpasScan::ID = 0;
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DpasScan::DpasScan() : FunctionPass(DpasScan::ID) { initializeDpasScanPass(*PassRegistry::getPassRegistry()); }
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void DpasScan::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequired<WIAnalysis>();
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AU.addRequired<MetaDataUtilsWrapper>();
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AU.addPreservedID(WIAnalysis::ID);
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}
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bool DpasScan::runOnFunction(Function &F) {
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ModuleMetaData *modMD = getAnalysis<MetaDataUtilsWrapper>().getModuleMetaData();
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// exit early because DisableEUFusion was already set
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if (modMD->compOpt.DisableEUFusion)
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return false;
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WIAnalysis *analysis = &getAnalysis<WIAnalysis>();
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for (auto IIter = inst_begin(F), EIter = inst_end(F); IIter != EIter; ++IIter) {
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Instruction *I = &*IIter;
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if (auto GInst = dyn_cast<GenIntrinsicInst>(I)) {
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auto intrinsidId = GInst->getIntrinsicID();
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switch (intrinsidId) {
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default:
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break;
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case GenISAIntrinsic::GenISA_dpas:
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case GenISAIntrinsic::GenISA_sub_group_dpas:
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if (analysis->insideDivergentCF(I)) {
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modMD->compOpt.DisableEUFusion = true;
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return true;
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}
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}
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}
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}
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return false;
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}
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