86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
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//===-- PTXMFInfoExtract.cpp - Extract PTX machine 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 file defines an information extractor for PTX machine functions.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "ptx-mf-info-extract"
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#include "PTX.h"
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#include "PTXTargetMachine.h"
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#include "PTXMachineFunctionInfo.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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// NOTE: PTXMFInfoExtract must after register allocation!
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namespace {
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/// PTXMFInfoExtract - PTX specific code to extract of PTX machine
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/// function information for PTXAsmPrinter
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///
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class PTXMFInfoExtract : public MachineFunctionPass {
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private:
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static char ID;
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public:
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PTXMFInfoExtract(PTXTargetMachine &TM, CodeGenOpt::Level OptLevel)
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: MachineFunctionPass(ID) {}
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virtual bool runOnMachineFunction(MachineFunction &MF);
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virtual const char *getPassName() const {
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return "PTX Machine Function Info Extractor";
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}
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}; // class PTXMFInfoExtract
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} // end anonymous namespace
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using namespace llvm;
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char PTXMFInfoExtract::ID = 0;
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bool PTXMFInfoExtract::runOnMachineFunction(MachineFunction &MF) {
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PTXMachineFunctionInfo *MFI = MF.getInfo<PTXMachineFunctionInfo>();
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MachineRegisterInfo &MRI = MF.getRegInfo();
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// Generate list of all virtual registers used in this function
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for (unsigned i = 0; i < MRI.getNumVirtRegs(); ++i) {
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unsigned Reg = TargetRegisterInfo::index2VirtReg(i);
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const TargetRegisterClass *TRC = MRI.getRegClass(Reg);
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unsigned RegType;
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if (TRC == PTX::RegPredRegisterClass)
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RegType = PTXRegisterType::Pred;
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else if (TRC == PTX::RegI16RegisterClass)
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RegType = PTXRegisterType::B16;
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else if (TRC == PTX::RegI32RegisterClass)
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RegType = PTXRegisterType::B32;
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else if (TRC == PTX::RegI64RegisterClass)
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RegType = PTXRegisterType::B64;
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else if (TRC == PTX::RegF32RegisterClass)
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RegType = PTXRegisterType::F32;
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else if (TRC == PTX::RegF64RegisterClass)
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RegType = PTXRegisterType::F64;
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else
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llvm_unreachable("Unkown register class.");
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MFI->addRegister(Reg, RegType, PTXRegisterSpace::Reg);
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}
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return false;
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}
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FunctionPass *llvm::createPTXMFInfoExtract(PTXTargetMachine &TM,
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CodeGenOpt::Level OptLevel) {
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return new PTXMFInfoExtract(TM, OptLevel);
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}
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