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Summary: This change is part of a series of commits dedicated to have a single DataLayout during compilation by using always the one owned by the module. This patch is quite boring overall, except for some uglyness in ASMPrinter which has a getDataLayout function but has some clients that use it without a Module (llmv-dsymutil, llvm-dwarfdump), so some methods are taking a DataLayout as parameter. Reviewers: echristo Subscribers: yaron.keren, rafael, llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11090 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242386 91177308-0d34-0410-b5e6-96231b3b80d8
158 lines
4.9 KiB
C++
158 lines
4.9 KiB
C++
//===-- MSP430MCInstLower.cpp - Convert MSP430 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 MSP430 MachineInstrs to their corresponding
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// MCInst records.
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//
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//===----------------------------------------------------------------------===//
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#include "MSP430MCInstLower.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/DataLayout.h"
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#include "llvm/IR/Mangler.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/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Target/TargetMachine.h"
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using namespace llvm;
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MCSymbol *MSP430MCInstLower::
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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.getSymbol(MO.getGlobal());
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}
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MCSymbol *MSP430MCInstLower::
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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 *MSP430MCInstLower::
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GetJumpTableSymbol(const MachineOperand &MO) const {
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const DataLayout &DL = Printer.getDataLayout();
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SmallString<256> Name;
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raw_svector_ostream(Name) << DL.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);
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}
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MCSymbol *MSP430MCInstLower::
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GetConstantPoolIndexSymbol(const MachineOperand &MO) const {
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const DataLayout &DL = Printer.getDataLayout();
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SmallString<256> Name;
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raw_svector_ostream(Name) << DL.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: 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);
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}
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MCSymbol *MSP430MCInstLower::
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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 MSP430MCInstLower::
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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: 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 MSP430MCInstLower::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:
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MI->dump();
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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_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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