mirror of
https://github.com/c64scene-ar/llvm-6502.git
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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
168 lines
5.2 KiB
C++
168 lines
5.2 KiB
C++
//===-- MBlazeMCInstLower.cpp - Convert MBlaze MachineInstr to an MCInst---===//
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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 code to lower MBlaze MachineInstrs to their corresponding
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// MCInst records.
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//
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//===----------------------------------------------------------------------===//
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#include "MBlazeMCInstLower.h"
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#include "MBlazeInstrInfo.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineBasicBlock.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.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/Mangler.h"
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using namespace llvm;
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MCSymbol *MBlazeMCInstLower::
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GetGlobalAddressSymbol(const MachineOperand &MO) const {
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switch (MO.getTargetFlags()) {
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default: llvm_unreachable("Unknown target flag on GV operand");
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case 0: break;
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}
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return Printer.Mang->getSymbol(MO.getGlobal());
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}
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MCSymbol *MBlazeMCInstLower::
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GetExternalSymbolSymbol(const MachineOperand &MO) const {
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switch (MO.getTargetFlags()) {
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default: llvm_unreachable("Unknown target flag on GV operand");
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case 0: break;
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}
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return Printer.GetExternalSymbolSymbol(MO.getSymbolName());
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}
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MCSymbol *MBlazeMCInstLower::
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GetJumpTableSymbol(const MachineOperand &MO) const {
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SmallString<256> Name;
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raw_svector_ostream(Name) << Printer.MAI->getPrivateGlobalPrefix() << "JTI"
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<< Printer.getFunctionNumber() << '_'
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<< MO.getIndex();
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switch (MO.getTargetFlags()) {
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default: llvm_unreachable("Unknown target flag on GV operand");
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case 0: break;
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}
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// Create a symbol for the name.
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return Ctx.GetOrCreateSymbol(Name.str());
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}
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MCSymbol *MBlazeMCInstLower::
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GetConstantPoolIndexSymbol(const MachineOperand &MO) const {
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SmallString<256> Name;
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raw_svector_ostream(Name) << Printer.MAI->getPrivateGlobalPrefix() << "CPI"
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<< Printer.getFunctionNumber() << '_'
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<< MO.getIndex();
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switch (MO.getTargetFlags()) {
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default:
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llvm_unreachable("Unknown target flag on GV operand");
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case 0: break;
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}
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// Create a symbol for the name.
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return Ctx.GetOrCreateSymbol(Name.str());
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}
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MCSymbol *MBlazeMCInstLower::
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GetBlockAddressSymbol(const MachineOperand &MO) const {
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switch (MO.getTargetFlags()) {
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default: llvm_unreachable("Unknown target flag on GV operand");
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case 0: break;
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}
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return Printer.GetBlockAddressSymbol(MO.getBlockAddress());
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}
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MCOperand MBlazeMCInstLower::
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LowerSymbolOperand(const MachineOperand &MO, MCSymbol *Sym) const {
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// FIXME: We would like an efficient form for this, so we don't have to do a
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// lot of extra uniquing.
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const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, Ctx);
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switch (MO.getTargetFlags()) {
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default:
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llvm_unreachable("Unknown target flag on GV operand");
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case 0: break;
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}
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if (!MO.isJTI() && MO.getOffset())
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Expr = MCBinaryExpr::CreateAdd(Expr,
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MCConstantExpr::Create(MO.getOffset(), Ctx),
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Ctx);
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return MCOperand::CreateExpr(Expr);
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}
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void MBlazeMCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const {
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OutMI.setOpcode(MI->getOpcode());
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for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
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const MachineOperand &MO = MI->getOperand(i);
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MCOperand MCOp;
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switch (MO.getType()) {
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default: llvm_unreachable("unknown operand type");
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case MachineOperand::MO_Register:
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// Ignore all implicit register operands.
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if (MO.isImplicit()) continue;
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MCOp = MCOperand::CreateReg(MO.getReg());
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break;
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case MachineOperand::MO_Immediate:
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MCOp = MCOperand::CreateImm(MO.getImm());
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break;
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case MachineOperand::MO_MachineBasicBlock:
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MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
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MO.getMBB()->getSymbol(), Ctx));
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break;
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case MachineOperand::MO_GlobalAddress:
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MCOp = LowerSymbolOperand(MO, GetGlobalAddressSymbol(MO));
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break;
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case MachineOperand::MO_ExternalSymbol:
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MCOp = LowerSymbolOperand(MO, GetExternalSymbolSymbol(MO));
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break;
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case MachineOperand::MO_JumpTableIndex:
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MCOp = LowerSymbolOperand(MO, GetJumpTableSymbol(MO));
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break;
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case MachineOperand::MO_ConstantPoolIndex:
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MCOp = LowerSymbolOperand(MO, GetConstantPoolIndexSymbol(MO));
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break;
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case MachineOperand::MO_BlockAddress:
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MCOp = LowerSymbolOperand(MO, GetBlockAddressSymbol(MO));
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break;
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case MachineOperand::MO_FPImmediate: {
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bool ignored;
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APFloat FVal = MO.getFPImm()->getValueAPF();
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FVal.convert(APFloat::IEEEsingle, APFloat::rmTowardZero, &ignored);
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APInt IVal = FVal.bitcastToAPInt();
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uint64_t Val = *IVal.getRawData();
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MCOp = MCOperand::CreateImm(Val);
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break;
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}
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case MachineOperand::MO_RegisterMask:
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continue;
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}
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OutMI.addOperand(MCOp);
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}
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}
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