mirror of
https://github.com/c64scene-ar/llvm-6502.git
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d04a8d4b33
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
128 lines
4.1 KiB
C++
128 lines
4.1 KiB
C++
//===-- Mips16RegisterInfo.cpp - MIPS16 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 MIPS16 implementation of the TargetRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#include "Mips16RegisterInfo.h"
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#include "Mips.h"
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#include "Mips16InstrInfo.h"
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#include "MipsAnalyzeImmediate.h"
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#include "MipsInstrInfo.h"
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#include "MipsMachineFunction.h"
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#include "MipsSubtarget.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/CodeGen/ValueTypes.h"
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#include "llvm/Constants.h"
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#include "llvm/DebugInfo.h"
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#include "llvm/Function.h"
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#include "llvm/Support/CommandLine.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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#include "llvm/Target/TargetFrameLowering.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Type.h"
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using namespace llvm;
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Mips16RegisterInfo::Mips16RegisterInfo(const MipsSubtarget &ST,
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const Mips16InstrInfo &I)
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: MipsRegisterInfo(ST), TII(I) {}
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// This function eliminate ADJCALLSTACKDOWN,
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// ADJCALLSTACKUP pseudo instructions
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void Mips16RegisterInfo::
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eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const {
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const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
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if (!TFI->hasReservedCallFrame(MF)) {
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int64_t Amount = I->getOperand(0).getImm();
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if (I->getOpcode() == Mips::ADJCALLSTACKDOWN)
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Amount = -Amount;
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const Mips16InstrInfo *II = static_cast<const Mips16InstrInfo*>(&TII);
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II->adjustStackPtr(Mips::SP, Amount, MBB, I);
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}
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MBB.erase(I);
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}
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void Mips16RegisterInfo::eliminateFI(MachineBasicBlock::iterator II,
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unsigned OpNo, int FrameIndex,
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uint64_t StackSize,
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int64_t SPOffset) const {
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MachineInstr &MI = *II;
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MachineFunction &MF = *MI.getParent()->getParent();
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MachineFrameInfo *MFI = MF.getFrameInfo();
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const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
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int MinCSFI = 0;
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int MaxCSFI = -1;
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if (CSI.size()) {
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MinCSFI = CSI[0].getFrameIdx();
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MaxCSFI = CSI[CSI.size() - 1].getFrameIdx();
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}
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// The following stack frame objects are always
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// referenced relative to $sp:
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// 1. Outgoing arguments.
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// 2. Pointer to dynamically allocated stack space.
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// 3. Locations for callee-saved registers.
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// Everything else is referenced relative to whatever register
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// getFrameRegister() returns.
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unsigned FrameReg;
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if (FrameIndex >= MinCSFI && FrameIndex <= MaxCSFI)
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FrameReg = Mips::SP;
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else {
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const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
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if (TFI->hasFP(MF)) {
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FrameReg = Mips::S0;
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}
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else {
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if ((MI.getNumOperands()> OpNo+2) && MI.getOperand(OpNo+2).isReg())
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FrameReg = MI.getOperand(OpNo+2).getReg();
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else
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FrameReg = Mips::SP;
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}
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}
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// Calculate final offset.
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// - There is no need to change the offset if the frame object
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// is one of the
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// following: an outgoing argument, pointer to a dynamically allocated
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// stack space or a $gp restore location,
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// - If the frame object is any of the following,
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// its offset must be adjusted
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// by adding the size of the stack:
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// incoming argument, callee-saved register location or local variable.
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int64_t Offset;
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Offset = SPOffset + (int64_t)StackSize;
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Offset += MI.getOperand(OpNo + 1).getImm();
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DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n");
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MI.getOperand(OpNo).ChangeToRegister(FrameReg, false);
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MI.getOperand(OpNo + 1).ChangeToImmediate(Offset);
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}
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