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0b8c9a80f2
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
//===-- SparcRegisterInfo.cpp - SPARC Register Information ----------------===//
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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 contains the SPARC implementation of the TargetRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#include "SparcRegisterInfo.h"
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#include "Sparc.h"
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#include "SparcSubtarget.h"
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#include "llvm/ADT/BitVector.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/IR/Type.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#define GET_REGINFO_TARGET_DESC
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#include "SparcGenRegisterInfo.inc"
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using namespace llvm;
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SparcRegisterInfo::SparcRegisterInfo(SparcSubtarget &st,
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const TargetInstrInfo &tii)
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: SparcGenRegisterInfo(SP::I7), Subtarget(st), TII(tii) {
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}
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const uint16_t* SparcRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF)
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const {
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static const uint16_t CalleeSavedRegs[] = { 0 };
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return CalleeSavedRegs;
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}
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BitVector SparcRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
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BitVector Reserved(getNumRegs());
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// FIXME: G1 reserved for now for large imm generation by frame code.
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Reserved.set(SP::G1);
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Reserved.set(SP::G2);
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Reserved.set(SP::G3);
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Reserved.set(SP::G4);
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Reserved.set(SP::O6);
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Reserved.set(SP::I6);
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Reserved.set(SP::I7);
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Reserved.set(SP::G0);
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Reserved.set(SP::G5);
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Reserved.set(SP::G6);
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Reserved.set(SP::G7);
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return Reserved;
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}
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void SparcRegisterInfo::
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eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const {
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MachineInstr &MI = *I;
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DebugLoc dl = MI.getDebugLoc();
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int Size = MI.getOperand(0).getImm();
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if (MI.getOpcode() == SP::ADJCALLSTACKDOWN)
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Size = -Size;
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if (Size)
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BuildMI(MBB, I, dl, TII.get(SP::ADDri), SP::O6).addReg(SP::O6).addImm(Size);
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MBB.erase(I);
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}
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void
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SparcRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
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int SPAdj, RegScavenger *RS) const {
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assert(SPAdj == 0 && "Unexpected");
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unsigned i = 0;
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MachineInstr &MI = *II;
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DebugLoc dl = MI.getDebugLoc();
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while (!MI.getOperand(i).isFI()) {
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++i;
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assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
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}
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int FrameIndex = MI.getOperand(i).getIndex();
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// Addressable stack objects are accessed using neg. offsets from %fp
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MachineFunction &MF = *MI.getParent()->getParent();
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int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
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MI.getOperand(i+1).getImm();
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// Replace frame index with a frame pointer reference.
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if (Offset >= -4096 && Offset <= 4095) {
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// If the offset is small enough to fit in the immediate field, directly
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// encode it.
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MI.getOperand(i).ChangeToRegister(SP::I6, false);
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MI.getOperand(i+1).ChangeToImmediate(Offset);
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} else {
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// Otherwise, emit a G1 = SETHI %hi(offset). FIXME: it would be better to
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// scavenge a register here instead of reserving G1 all of the time.
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unsigned OffHi = (unsigned)Offset >> 10U;
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BuildMI(*MI.getParent(), II, dl, TII.get(SP::SETHIi), SP::G1).addImm(OffHi);
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// Emit G1 = G1 + I6
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BuildMI(*MI.getParent(), II, dl, TII.get(SP::ADDrr), SP::G1).addReg(SP::G1)
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.addReg(SP::I6);
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// Insert: G1+%lo(offset) into the user.
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MI.getOperand(i).ChangeToRegister(SP::G1, false);
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MI.getOperand(i+1).ChangeToImmediate(Offset & ((1 << 10)-1));
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}
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}
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unsigned SparcRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
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return SP::I6;
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}
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unsigned SparcRegisterInfo::getEHExceptionRegister() const {
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llvm_unreachable("What is the exception register");
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}
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unsigned SparcRegisterInfo::getEHHandlerRegister() const {
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llvm_unreachable("What is the exception handler register");
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}
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