| //===- PTXRegisterInfo.cpp - PTX Register Information ---------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the PTX implementation of the TargetRegisterInfo class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "PTX.h" |
| #include "PTXRegisterInfo.h" |
| #include "llvm/CodeGen/MachineFunction.h" |
| #include "llvm/Support/Debug.h" |
| #include "llvm/Support/raw_ostream.h" |
| |
| #define GET_REGINFO_TARGET_DESC |
| #include "PTXGenRegisterInfo.inc" |
| |
| using namespace llvm; |
| |
| PTXRegisterInfo::PTXRegisterInfo(PTXTargetMachine &TM, |
| const TargetInstrInfo &TII) |
| // PTX does not have a return address register. |
| : PTXGenRegisterInfo(0) { |
| } |
| |
| void PTXRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, |
| int SPAdj, |
| RegScavenger *RS) const { |
| unsigned Index; |
| MachineInstr& MI = *II; |
| |
| Index = 0; |
| while (!MI.getOperand(Index).isFI()) { |
| ++Index; |
| assert(Index < MI.getNumOperands() && |
| "Instr does not have a FrameIndex operand!"); |
| } |
| |
| int FrameIndex = MI.getOperand(Index).getIndex(); |
| |
| DEBUG(dbgs() << "eliminateFrameIndex: " << MI); |
| DEBUG(dbgs() << "- SPAdj: " << SPAdj << "\n"); |
| DEBUG(dbgs() << "- FrameIndex: " << FrameIndex << "\n"); |
| |
| // This frame index is post stack slot re-use assignments |
| MI.getOperand(Index).ChangeToImmediate(FrameIndex); |
| } |