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//===-- NVPTXMachineFunctionInfo.h - NVPTX-specific Function Info --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This class is attached to a MachineFunction instance and tracks target-
// dependent information
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_NVPTX_NVPTXMACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_NVPTX_NVPTXMACHINEFUNCTIONINFO_H
#include "llvm/CodeGen/MachineFunction.h"
namespace llvm {
class NVPTXMachineFunctionInfo : public MachineFunctionInfo {
private:
/// Stores a mapping from index to symbol name for removing image handles
/// on Fermi.
SmallVector<std::string, 8> ImageHandleList;
public:
NVPTXMachineFunctionInfo(const Function &F, const TargetSubtargetInfo *STI) {}
MachineFunctionInfo *
clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
const override {
return DestMF.cloneInfo<NVPTXMachineFunctionInfo>(*this);
}
/// Returns the index for the symbol \p Symbol. If the symbol was previously,
/// added, the same index is returned. Otherwise, the symbol is added and the
/// new index is returned.
unsigned getImageHandleSymbolIndex(const char *Symbol) {
// Is the symbol already present?
for (unsigned i = 0, e = ImageHandleList.size(); i != e; ++i)
if (ImageHandleList[i] == std::string(Symbol))
return i;
// Nope, insert it
ImageHandleList.push_back(Symbol);
return ImageHandleList.size()-1;
}
/// Returns the symbol name at the given index.
const char *getImageHandleSymbol(unsigned Idx) const {
assert(ImageHandleList.size() > Idx && "Bad index");
return ImageHandleList[Idx].c_str();
}
};
}
#endif
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