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b035f9f3e4
This commit adds intrinsics and codegen support for the surface read/write and texture read instructions that take an explicit sampler parameter. Codegen operates on image handles at the PTX level, but falls back to direct replacement of handles with kernel arguments if image handles are not enabled. Note that image handles are explicitly disabled for all target architectures in this change (to be enabled later). llvm-svn: 205907
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
//===-- NVPTXMachineFunctionInfo.h - NVPTX-specific Function Info --------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class is attached to a MachineFunction instance and tracks target-
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// dependent information
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineFunction.h"
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namespace llvm {
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class NVPTXMachineFunctionInfo : public MachineFunctionInfo {
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private:
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/// Stores a mapping from index to symbol name for removing image handles
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/// on Fermi.
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SmallVector<std::string, 8> ImageHandleList;
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public:
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NVPTXMachineFunctionInfo(MachineFunction &MF) {}
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/// Returns the index for the symbol \p Symbol. If the symbol was previously,
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/// added, the same index is returned. Otherwise, the symbol is added and the
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/// new index is returned.
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unsigned getImageHandleSymbolIndex(const char *Symbol) {
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// Is the symbol already present?
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for (unsigned i = 0, e = ImageHandleList.size(); i != e; ++i)
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if (ImageHandleList[i] == std::string(Symbol))
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return i;
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// Nope, insert it
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ImageHandleList.push_back(Symbol);
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return ImageHandleList.size()-1;
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}
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/// Returns the symbol name at the given index.
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const char *getImageHandleSymbol(unsigned Idx) const {
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assert(ImageHandleList.size() > Idx && "Bad index");
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return ImageHandleList[Idx].c_str();
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}
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};
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}
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