mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-29 23:12:55 +01:00
70532b9f00
Add support for running bugpoint on mac os x for intel llvm-svn: 22351
209 lines
6.5 KiB
C++
Executable File
209 lines
6.5 KiB
C++
Executable File
//===-- X86ATTAsmPrinter.cpp - Convert X86 LLVM code to Intel assembly ----===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains a printer that converts from our internal representation
|
|
// of machine-dependent LLVM code to AT&T format assembly
|
|
// language. This printer is the output mechanism used by `llc'.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "X86ATTAsmPrinter.h"
|
|
#include "X86.h"
|
|
#include "X86TargetMachine.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Support/Mangler.h"
|
|
using namespace llvm;
|
|
using namespace x86;
|
|
|
|
/// runOnMachineFunction - This uses the printMachineInstruction()
|
|
/// method to print assembly for each instruction.
|
|
///
|
|
bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
|
|
setupMachineFunction(MF);
|
|
O << "\n\n";
|
|
|
|
// Print out constants referenced by the function
|
|
printConstantPool(MF.getConstantPool());
|
|
|
|
// Print out labels for the function.
|
|
O << "\t.text\n";
|
|
emitAlignment(4);
|
|
O << "\t.globl\t" << CurrentFnName << "\n";
|
|
if (!forCygwin && !forDarwin)
|
|
O << "\t.type\t" << CurrentFnName << ", @function\n";
|
|
O << CurrentFnName << ":\n";
|
|
|
|
// Print out code for the function.
|
|
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
|
|
I != E; ++I) {
|
|
// Print a label for the basic block.
|
|
if (I->pred_begin() != I->pred_end())
|
|
O << ".LBB" << CurrentFnName << "_" << I->getNumber() << ":\t"
|
|
<< CommentString << " " << I->getBasicBlock()->getName() << "\n";
|
|
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
|
|
II != E; ++II) {
|
|
// Print the assembly for the instruction.
|
|
O << "\t";
|
|
printMachineInstruction(II);
|
|
}
|
|
}
|
|
|
|
// We didn't modify anything.
|
|
return false;
|
|
}
|
|
|
|
void X86ATTAsmPrinter::printOp(const MachineOperand &MO, bool isCallOp) {
|
|
const MRegisterInfo &RI = *TM.getRegisterInfo();
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_VirtualRegister:
|
|
case MachineOperand::MO_MachineRegister:
|
|
assert(MRegisterInfo::isPhysicalRegister(MO.getReg()) &&
|
|
"Virtual registers should not make it this far!");
|
|
O << '%';
|
|
for (const char *Name = RI.get(MO.getReg()).Name; *Name; ++Name)
|
|
O << (char)tolower(*Name);
|
|
return;
|
|
|
|
case MachineOperand::MO_SignExtendedImmed:
|
|
case MachineOperand::MO_UnextendedImmed:
|
|
O << '$' << (int)MO.getImmedValue();
|
|
return;
|
|
case MachineOperand::MO_MachineBasicBlock: {
|
|
MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
|
|
O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
|
|
<< "_" << MBBOp->getNumber () << "\t# "
|
|
<< MBBOp->getBasicBlock ()->getName ();
|
|
return;
|
|
}
|
|
case MachineOperand::MO_PCRelativeDisp:
|
|
std::cerr << "Shouldn't use addPCDisp() when building X86 MachineInstrs";
|
|
abort ();
|
|
return;
|
|
case MachineOperand::MO_GlobalAddress: {
|
|
// Darwin block shameless ripped from PowerPCAsmPrinter.cpp
|
|
if (forDarwin) {
|
|
if (!isCallOp) O << '$';
|
|
GlobalValue *GV = MO.getGlobal();
|
|
std::string Name = Mang->getValueName(GV);
|
|
|
|
// Dynamically-resolved functions need a stub for the function. Be
|
|
// wary however not to output $stub for external functions whose addresses
|
|
// are taken. Those should be emitted as $non_lazy_ptr below.
|
|
Function *F = dyn_cast<Function>(GV);
|
|
if (F && isCallOp && F->isExternal()) {
|
|
FnStubs.insert(Name);
|
|
O << "L" << Name << "$stub";
|
|
return;
|
|
}
|
|
|
|
// Link-once, External, or Weakly-linked global variables need
|
|
// non-lazily-resolved stubs
|
|
if (GV->hasLinkOnceLinkage()) {
|
|
LinkOnceStubs.insert(Name);
|
|
O << "L" << Name << "$non_lazy_ptr";
|
|
return;
|
|
}
|
|
if (GV->isExternal() || GV->hasWeakLinkage()) {
|
|
GVStubs.insert(Name);
|
|
O << "L" << Name << "$non_lazy_ptr";
|
|
return;
|
|
}
|
|
O << Mang->getValueName(GV);
|
|
return;
|
|
}
|
|
if (!isCallOp) O << '$';
|
|
O << Mang->getValueName(MO.getGlobal());
|
|
int Offset = MO.getOffset();
|
|
if (Offset > 0)
|
|
O << "+" << Offset;
|
|
else if (Offset < 0)
|
|
O << Offset;
|
|
return;
|
|
}
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
if (isCallOp && forDarwin) {
|
|
std::string Name(GlobalPrefix); Name += MO.getSymbolName();
|
|
FnStubs.insert(Name);
|
|
O << "L" << Name << "$stub";
|
|
return;
|
|
}
|
|
if (!isCallOp) O << '$';
|
|
O << GlobalPrefix << MO.getSymbolName();
|
|
return;
|
|
default:
|
|
O << "<unknown operand type>"; return;
|
|
}
|
|
}
|
|
|
|
void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
|
|
assert(isMem(MI, Op) && "Invalid memory reference!");
|
|
|
|
const MachineOperand &BaseReg = MI->getOperand(Op);
|
|
int ScaleVal = MI->getOperand(Op+1).getImmedValue();
|
|
const MachineOperand &IndexReg = MI->getOperand(Op+2);
|
|
const MachineOperand &DispSpec = MI->getOperand(Op+3);
|
|
|
|
if (BaseReg.isFrameIndex()) {
|
|
O << "[frame slot #" << BaseReg.getFrameIndex();
|
|
if (DispSpec.getImmedValue())
|
|
O << " + " << DispSpec.getImmedValue();
|
|
O << "]";
|
|
return;
|
|
} else if (BaseReg.isConstantPoolIndex()) {
|
|
O << ".CPI" << CurrentFnName << "_"
|
|
<< BaseReg.getConstantPoolIndex();
|
|
if (DispSpec.getImmedValue())
|
|
O << "+" << DispSpec.getImmedValue();
|
|
if (IndexReg.getReg()) {
|
|
O << "(,";
|
|
printOp(IndexReg);
|
|
if (ScaleVal != 1)
|
|
O << "," << ScaleVal;
|
|
O << ")";
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (DispSpec.isGlobalAddress()) {
|
|
printOp(DispSpec, true);
|
|
} else {
|
|
int DispVal = DispSpec.getImmedValue();
|
|
if (DispVal || (!IndexReg.getReg() && !BaseReg.getReg()))
|
|
O << DispVal;
|
|
}
|
|
|
|
if (IndexReg.getReg() || BaseReg.getReg()) {
|
|
O << "(";
|
|
if (BaseReg.getReg())
|
|
printOp(BaseReg);
|
|
|
|
if (IndexReg.getReg()) {
|
|
O << ",";
|
|
printOp(IndexReg);
|
|
if (ScaleVal != 1)
|
|
O << "," << ScaleVal;
|
|
}
|
|
|
|
O << ")";
|
|
}
|
|
}
|
|
|
|
/// printMachineInstruction -- Print out a single X86 LLVM instruction
|
|
/// MI in Intel syntax to the current output stream.
|
|
///
|
|
void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
|
|
++EmittedInsts;
|
|
// Call the autogenerated instruction printer routines.
|
|
printInstruction(MI);
|
|
}
|
|
|
|
// Include the auto-generated portion of the assembly writer.
|
|
#include "X86GenAsmWriter.inc"
|
|
|