mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
1924aabf99
target-specific AsmPrinters. Not all comments need DebugInfo. Re-enable the line numbers comment test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88697 91177308-0d34-0410-b5e6-96231b3b80d8
283 lines
8.6 KiB
C++
283 lines
8.6 KiB
C++
//===-- AlphaAsmPrinter.cpp - Alpha LLVM assembly writer ------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file 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 GAS-format Alpha assembly language.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "asm-printer"
|
|
#include "Alpha.h"
|
|
#include "AlphaInstrInfo.h"
|
|
#include "AlphaTargetMachine.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/Assembly/Writer.h"
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/CodeGen/DwarfWriter.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Target/TargetLoweringObjectFile.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Target/TargetRegistry.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/Mangler.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
using namespace llvm;
|
|
|
|
STATISTIC(EmittedInsts, "Number of machine instrs printed");
|
|
|
|
namespace {
|
|
struct AlphaAsmPrinter : public AsmPrinter {
|
|
/// Unique incrementer for label values for referencing Global values.
|
|
///
|
|
|
|
explicit AlphaAsmPrinter(formatted_raw_ostream &o, TargetMachine &tm,
|
|
const MCAsmInfo *T, bool V)
|
|
: AsmPrinter(o, tm, T, V) {}
|
|
|
|
virtual const char *getPassName() const {
|
|
return "Alpha Assembly Printer";
|
|
}
|
|
void printInstruction(const MachineInstr *MI);
|
|
static const char *getRegisterName(unsigned RegNo);
|
|
|
|
void printOp(const MachineOperand &MO, bool IsCallOp = false);
|
|
void printOperand(const MachineInstr *MI, int opNum);
|
|
void printBaseOffsetPair(const MachineInstr *MI, int i, bool brackets=true);
|
|
void PrintGlobalVariable(const GlobalVariable *GVar);
|
|
bool runOnMachineFunction(MachineFunction &F);
|
|
void EmitStartOfAsmFile(Module &M);
|
|
|
|
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant, const char *ExtraCode);
|
|
bool PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
unsigned OpNo,
|
|
unsigned AsmVariant,
|
|
const char *ExtraCode);
|
|
};
|
|
} // end of anonymous namespace
|
|
|
|
#include "AlphaGenAsmWriter.inc"
|
|
|
|
void AlphaAsmPrinter::printOperand(const MachineInstr *MI, int opNum)
|
|
{
|
|
const MachineOperand &MO = MI->getOperand(opNum);
|
|
if (MO.getType() == MachineOperand::MO_Register) {
|
|
assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
|
|
"Not physreg??");
|
|
O << getRegisterName(MO.getReg());
|
|
} else if (MO.isImm()) {
|
|
O << MO.getImm();
|
|
assert(MO.getImm() < (1 << 30));
|
|
} else {
|
|
printOp(MO);
|
|
}
|
|
}
|
|
|
|
|
|
void AlphaAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) {
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_Register:
|
|
O << getRegisterName(MO.getReg());
|
|
return;
|
|
|
|
case MachineOperand::MO_Immediate:
|
|
llvm_unreachable("printOp() does not handle immediate values");
|
|
return;
|
|
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
GetMBBSymbol(MO.getMBB()->getNumber())->print(O, MAI);
|
|
return;
|
|
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
|
|
<< MO.getIndex();
|
|
return;
|
|
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
O << MO.getSymbolName();
|
|
return;
|
|
|
|
case MachineOperand::MO_GlobalAddress:
|
|
O << Mang->getMangledName(MO.getGlobal());
|
|
return;
|
|
|
|
case MachineOperand::MO_JumpTableIndex:
|
|
O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
|
|
<< '_' << MO.getIndex();
|
|
return;
|
|
|
|
default:
|
|
O << "<unknown operand type: " << MO.getType() << ">";
|
|
return;
|
|
}
|
|
}
|
|
|
|
/// runOnMachineFunction - This uses the printMachineInstruction()
|
|
/// method to print assembly for each instruction.
|
|
///
|
|
bool AlphaAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
|
|
this->MF = &MF;
|
|
|
|
SetupMachineFunction(MF);
|
|
O << "\n\n";
|
|
|
|
// Print out constants referenced by the function
|
|
EmitConstantPool(MF.getConstantPool());
|
|
|
|
// Print out jump tables referenced by the function
|
|
EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
|
|
|
|
// Print out labels for the function.
|
|
const Function *F = MF.getFunction();
|
|
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
|
|
|
|
EmitAlignment(MF.getAlignment(), F);
|
|
switch (F->getLinkage()) {
|
|
default: llvm_unreachable("Unknown linkage type!");
|
|
case Function::InternalLinkage: // Symbols default to internal.
|
|
case Function::PrivateLinkage:
|
|
case Function::LinkerPrivateLinkage:
|
|
break;
|
|
case Function::ExternalLinkage:
|
|
O << "\t.globl " << CurrentFnName << "\n";
|
|
break;
|
|
case Function::WeakAnyLinkage:
|
|
case Function::WeakODRLinkage:
|
|
case Function::LinkOnceAnyLinkage:
|
|
case Function::LinkOnceODRLinkage:
|
|
O << MAI->getWeakRefDirective() << CurrentFnName << "\n";
|
|
break;
|
|
}
|
|
|
|
printVisibility(CurrentFnName, F->getVisibility());
|
|
|
|
O << "\t.ent " << CurrentFnName << "\n";
|
|
|
|
O << CurrentFnName << ":\n";
|
|
|
|
// Print out code for the function.
|
|
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
|
|
I != E; ++I) {
|
|
if (I != MF.begin()) {
|
|
EmitBasicBlockStart(I);
|
|
}
|
|
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
|
|
II != E; ++II) {
|
|
// Print the assembly for the instruction.
|
|
++EmittedInsts;
|
|
processDebugLoc(II, true);
|
|
printInstruction(II);
|
|
|
|
if (VerboseAsm)
|
|
EmitComments(*II);
|
|
O << '\n';
|
|
processDebugLoc(II, false);
|
|
}
|
|
}
|
|
|
|
O << "\t.end " << CurrentFnName << "\n";
|
|
|
|
// We didn't modify anything.
|
|
return false;
|
|
}
|
|
|
|
void AlphaAsmPrinter::EmitStartOfAsmFile(Module &M) {
|
|
if (TM.getSubtarget<AlphaSubtarget>().hasCT())
|
|
O << "\t.arch ev6\n"; //This might need to be ev67, so leave this test here
|
|
else
|
|
O << "\t.arch ev6\n";
|
|
O << "\t.set noat\n";
|
|
}
|
|
|
|
void AlphaAsmPrinter::PrintGlobalVariable(const GlobalVariable *GVar) {
|
|
const TargetData *TD = TM.getTargetData();
|
|
|
|
if (!GVar->hasInitializer()) return; // External global require no code
|
|
|
|
// Check to see if this is a special global used by LLVM, if so, emit it.
|
|
if (EmitSpecialLLVMGlobal(GVar))
|
|
return;
|
|
|
|
std::string name = Mang->getMangledName(GVar);
|
|
Constant *C = GVar->getInitializer();
|
|
unsigned Size = TD->getTypeAllocSize(C->getType());
|
|
unsigned Align = TD->getPreferredAlignmentLog(GVar);
|
|
|
|
// 0: Switch to section
|
|
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(GVar, Mang,
|
|
TM));
|
|
|
|
// 1: Check visibility
|
|
printVisibility(name, GVar->getVisibility());
|
|
|
|
// 2: Kind
|
|
switch (GVar->getLinkage()) {
|
|
case GlobalValue::LinkOnceAnyLinkage:
|
|
case GlobalValue::LinkOnceODRLinkage:
|
|
case GlobalValue::WeakAnyLinkage:
|
|
case GlobalValue::WeakODRLinkage:
|
|
case GlobalValue::CommonLinkage:
|
|
O << MAI->getWeakRefDirective() << name << '\n';
|
|
break;
|
|
case GlobalValue::AppendingLinkage:
|
|
case GlobalValue::ExternalLinkage:
|
|
O << MAI->getGlobalDirective() << name << "\n";
|
|
break;
|
|
case GlobalValue::InternalLinkage:
|
|
case GlobalValue::PrivateLinkage:
|
|
case GlobalValue::LinkerPrivateLinkage:
|
|
break;
|
|
default:
|
|
llvm_unreachable("Unknown linkage type!");
|
|
}
|
|
|
|
// 3: Type, Size, Align
|
|
if (MAI->hasDotTypeDotSizeDirective()) {
|
|
O << "\t.type\t" << name << ", @object\n";
|
|
O << "\t.size\t" << name << ", " << Size << "\n";
|
|
}
|
|
|
|
EmitAlignment(Align, GVar);
|
|
|
|
O << name << ":\n";
|
|
|
|
EmitGlobalConstant(C);
|
|
O << '\n';
|
|
}
|
|
|
|
/// PrintAsmOperand - Print out an operand for an inline asm expression.
|
|
///
|
|
bool AlphaAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
unsigned AsmVariant,
|
|
const char *ExtraCode) {
|
|
printOperand(MI, OpNo);
|
|
return false;
|
|
}
|
|
|
|
bool AlphaAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
unsigned OpNo,
|
|
unsigned AsmVariant,
|
|
const char *ExtraCode) {
|
|
if (ExtraCode && ExtraCode[0])
|
|
return true; // Unknown modifier.
|
|
O << "0(";
|
|
printOperand(MI, OpNo);
|
|
O << ")";
|
|
return false;
|
|
}
|
|
|
|
// Force static initialization.
|
|
extern "C" void LLVMInitializeAlphaAsmPrinter() {
|
|
RegisterAsmPrinter<AlphaAsmPrinter> X(TheAlphaTarget);
|
|
}
|