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/*========================== begin_copyright_notice ============================
Copyright (C) 2026 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "common/LLVMWarningsPush.hpp"
#include "llvmWrapper/Analysis/DemandedBits.h"
#include "llvm/Analysis/DemandedBits.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/Analysis/PostDominators.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Value.h"
#include "llvm/Pass.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Transforms/Scalar.h"
#include "llvmWrapper/Transforms/InitializePasses.h"
#include "common/LLVMWarningsPop.hpp"
#include "Compiler/IGCPassSupport.h"
using namespace llvm;
namespace IGCLLVM {
DemandedBitsLegacyPassWrapper::DemandedBitsLegacyPassWrapper() : FunctionPass(ID) {
initializeDemandedBitsLegacyPassWrapperPass(*PassRegistry::getPassRegistry());
PB.registerFunctionAnalyses(FAM);
}
bool DemandedBitsLegacyPassWrapper::runOnFunction(Function &F) {
// The legacy pass manager implementation of the pass used to skip some functions. In the new pass manager
// implementation this is done globally through the pass manager. Check and skip explicitly here to preserve the old
// behavior.
if (skipFunction(F))
return false;
DemandedBitsAnalysis Implementation;
Implementation.run(F, FAM);
return true;
}
void DemandedBitsLegacyPassWrapper::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequired<AssumptionCacheTracker>();
AU.addRequired<DominatorTreeWrapperPass>();
AU.setPreservesAll();
}
char DemandedBitsLegacyPassWrapper::ID = 0;
FunctionPass *createLegacyWrappedDemandedBitsPass() {
#if LLVM_VERSION_MAJOR > 16 && !defined(IGC_LLVM_TRUNK_REVISION)
return new DemandedBitsLegacyPassWrapper();
#else
return llvm::createDemandedBitsWrapperPass();
#endif
}
} // namespace IGCLLVM
using namespace IGCLLVM;
#define PASS_FLAG "demanded-bits-legacy-wrapped"
#define PASS_DESCRIPTION "Demanded bits LPM Wrapped"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS true
IGC_INITIALIZE_PASS_BEGIN(DemandedBitsLegacyPassWrapper, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
IGC_INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
IGC_INITIALIZE_PASS_END(DemandedBitsLegacyPassWrapper, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
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