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/*========================== begin_copyright_notice ============================
Copyright (C) 2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#ifndef IGCLLVM_TRANSFORMS_UTILS_LOCAL_H
#define IGCLLVM_TRANSFORMS_UTILS_LOCAL_H
#include "llvm/Config/llvm-config.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/ValueHandle.h"
namespace IGCLLVM {
/// In LLVM 11 first argument changed type from SmallVectorImpl<Instruction*> to SmallVectorImpl<WeakTrackingVH>
/// For LLVM >= 11: Proxy llvm:: call.
/// For LLVM < 11: Unpack WeakTrackingVH and call normally.
inline void RecursivelyDeleteTriviallyDeadInstructions(llvm::SmallVectorImpl<llvm::WeakTrackingVH> &DeadInsts,
const llvm::TargetLibraryInfo *TLI = nullptr,
llvm::MemorySSAUpdater *MSSAU = nullptr) {
using namespace llvm;
#if LLVM_VERSION_MAJOR < 11
SmallVector<Instruction *, 8> instPtrsVector = SmallVector<Instruction *, 8>();
// Unpack items of type 'WeakTrackingVH' to 'Instruction*'
for (unsigned i = 0; i < DeadInsts.size(); i++) {
Value *tmpVecItem = DeadInsts[i]; // Using 'WeakTrackingVH::operator Value*()'
instPtrsVector.push_back(cast<Instruction>(tmpVecItem));
}
llvm::RecursivelyDeleteTriviallyDeadInstructions(instPtrsVector, TLI, MSSAU);
#else
llvm::RecursivelyDeleteTriviallyDeadInstructions(DeadInsts, TLI, MSSAU);
#endif
}
} // namespace IGCLLVM
#endif
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