mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-08 08:54:58 +00:00
3ed469ccd7
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting fall out by removing unused variables. Remaining warnings have to do with unused functions (I didn't want to delete code without review) and unused variables in generated code. Maintainers should clean up the remaining issues when they see them. All changes pass DejaGnu tests and Olden. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
297 lines
10 KiB
C++
297 lines
10 KiB
C++
//===-- SparcAsmPrinter.cpp - Sparc LLVM assembly writer ------------------===//
|
|
//
|
|
// 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 GAS-format SPARC assembly language.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Sparc.h"
|
|
#include "SparcInstrInfo.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Assembly/Writer.h"
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
#include "llvm/CodeGen/MachineConstantPool.h"
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/Target/TargetAsmInfo.h"
|
|
#include "llvm/Target/TargetData.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Support/Mangler.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/MathExtras.h"
|
|
#include <cctype>
|
|
#include <iostream>
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
|
|
|
|
struct VISIBILITY_HIDDEN SparcAsmPrinter : public AsmPrinter {
|
|
SparcAsmPrinter(std::ostream &O, TargetMachine &TM, const TargetAsmInfo *T)
|
|
: AsmPrinter(O, TM, T) {
|
|
}
|
|
|
|
/// We name each basic block in a Function with a unique number, so
|
|
/// that we can consistently refer to them later. This is cleared
|
|
/// at the beginning of each call to runOnMachineFunction().
|
|
///
|
|
typedef std::map<const Value *, unsigned> ValueMapTy;
|
|
ValueMapTy NumberForBB;
|
|
|
|
virtual const char *getPassName() const {
|
|
return "Sparc Assembly Printer";
|
|
}
|
|
|
|
void printOperand(const MachineInstr *MI, int opNum);
|
|
void printMemOperand(const MachineInstr *MI, int opNum,
|
|
const char *Modifier = 0);
|
|
void printCCOperand(const MachineInstr *MI, int opNum);
|
|
|
|
bool printInstruction(const MachineInstr *MI); // autogenerated.
|
|
bool runOnMachineFunction(MachineFunction &F);
|
|
bool doInitialization(Module &M);
|
|
bool doFinalization(Module &M);
|
|
};
|
|
} // end of anonymous namespace
|
|
|
|
#include "SparcGenAsmWriter.inc"
|
|
|
|
/// createSparcCodePrinterPass - Returns a pass that prints the SPARC
|
|
/// assembly code for a MachineFunction to the given output stream,
|
|
/// using the given target machine description. This should work
|
|
/// regardless of whether the function is in SSA form.
|
|
///
|
|
FunctionPass *llvm::createSparcCodePrinterPass(std::ostream &o,
|
|
TargetMachine &tm) {
|
|
return new SparcAsmPrinter(o, tm, tm.getTargetAsmInfo());
|
|
}
|
|
|
|
/// runOnMachineFunction - This uses the printMachineInstruction()
|
|
/// method to print assembly for each instruction.
|
|
///
|
|
bool SparcAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
|
|
SetupMachineFunction(MF);
|
|
|
|
// Print out constants referenced by the function
|
|
EmitConstantPool(MF.getConstantPool());
|
|
|
|
// BBNumber is used here so that a given Printer will never give two
|
|
// BBs the same name. (If you have a better way, please let me know!)
|
|
static unsigned BBNumber = 0;
|
|
|
|
O << "\n\n";
|
|
// What's my mangled name?
|
|
CurrentFnName = Mang->getValueName(MF.getFunction());
|
|
|
|
// Print out the label for the function.
|
|
const Function *F = MF.getFunction();
|
|
SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
|
|
EmitAlignment(4, F);
|
|
O << "\t.globl\t" << CurrentFnName << "\n";
|
|
O << "\t.type\t" << CurrentFnName << ", #function\n";
|
|
O << CurrentFnName << ":\n";
|
|
|
|
// Number each basic block so that we can consistently refer to them
|
|
// in PC-relative references.
|
|
// FIXME: Why not use the MBB numbers?
|
|
NumberForBB.clear();
|
|
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
|
|
I != E; ++I) {
|
|
NumberForBB[I->getBasicBlock()] = BBNumber++;
|
|
}
|
|
|
|
// 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 != MF.begin()) {
|
|
printBasicBlockLabel(I, true);
|
|
O << '\n';
|
|
}
|
|
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
|
|
II != E; ++II) {
|
|
// Print the assembly for the instruction.
|
|
O << "\t";
|
|
printInstruction(II);
|
|
++EmittedInsts;
|
|
}
|
|
}
|
|
|
|
// We didn't modify anything.
|
|
return false;
|
|
}
|
|
|
|
void SparcAsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
|
|
const MachineOperand &MO = MI->getOperand (opNum);
|
|
const MRegisterInfo &RI = *TM.getRegisterInfo();
|
|
bool CloseParen = false;
|
|
if (MI->getOpcode() == SP::SETHIi && !MO.isRegister() && !MO.isImmediate()) {
|
|
O << "%hi(";
|
|
CloseParen = true;
|
|
} else if ((MI->getOpcode() == SP::ORri || MI->getOpcode() == SP::ADDri)
|
|
&& !MO.isRegister() && !MO.isImmediate()) {
|
|
O << "%lo(";
|
|
CloseParen = true;
|
|
}
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_Register:
|
|
if (MRegisterInfo::isPhysicalRegister(MO.getReg()))
|
|
O << "%" << LowercaseString (RI.get(MO.getReg()).Name);
|
|
else
|
|
O << "%reg" << MO.getReg();
|
|
break;
|
|
|
|
case MachineOperand::MO_Immediate:
|
|
O << (int)MO.getImmedValue();
|
|
break;
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
printBasicBlockLabel(MO.getMachineBasicBlock());
|
|
return;
|
|
case MachineOperand::MO_GlobalAddress:
|
|
O << Mang->getValueName(MO.getGlobal());
|
|
break;
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
O << MO.getSymbolName();
|
|
break;
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
|
|
<< MO.getConstantPoolIndex();
|
|
break;
|
|
default:
|
|
O << "<unknown operand type>"; abort (); break;
|
|
}
|
|
if (CloseParen) O << ")";
|
|
}
|
|
|
|
void SparcAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
|
|
const char *Modifier) {
|
|
printOperand(MI, opNum);
|
|
|
|
// If this is an ADD operand, emit it like normal operands.
|
|
if (Modifier && !strcmp(Modifier, "arith")) {
|
|
O << ", ";
|
|
printOperand(MI, opNum+1);
|
|
return;
|
|
}
|
|
|
|
if (MI->getOperand(opNum+1).isRegister() &&
|
|
MI->getOperand(opNum+1).getReg() == SP::G0)
|
|
return; // don't print "+%g0"
|
|
if (MI->getOperand(opNum+1).isImmediate() &&
|
|
MI->getOperand(opNum+1).getImmedValue() == 0)
|
|
return; // don't print "+0"
|
|
|
|
O << "+";
|
|
if (MI->getOperand(opNum+1).isGlobalAddress() ||
|
|
MI->getOperand(opNum+1).isConstantPoolIndex()) {
|
|
O << "%lo(";
|
|
printOperand(MI, opNum+1);
|
|
O << ")";
|
|
} else {
|
|
printOperand(MI, opNum+1);
|
|
}
|
|
}
|
|
|
|
void SparcAsmPrinter::printCCOperand(const MachineInstr *MI, int opNum) {
|
|
int CC = (int)MI->getOperand(opNum).getImmedValue();
|
|
O << SPARCCondCodeToString((SPCC::CondCodes)CC);
|
|
}
|
|
|
|
|
|
|
|
bool SparcAsmPrinter::doInitialization(Module &M) {
|
|
Mang = new Mangler(M);
|
|
return false; // success
|
|
}
|
|
|
|
bool SparcAsmPrinter::doFinalization(Module &M) {
|
|
const TargetData *TD = TM.getTargetData();
|
|
|
|
// Print out module-level global variables here.
|
|
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
|
|
I != E; ++I)
|
|
if (I->hasInitializer()) { // External global require no code
|
|
// Check to see if this is a special global used by LLVM, if so, emit it.
|
|
if (EmitSpecialLLVMGlobal(I))
|
|
continue;
|
|
|
|
O << "\n\n";
|
|
std::string name = Mang->getValueName(I);
|
|
Constant *C = I->getInitializer();
|
|
unsigned Size = TD->getTypeSize(C->getType());
|
|
unsigned Align = TD->getTypeAlignment(C->getType());
|
|
|
|
if (C->isNullValue() &&
|
|
(I->hasLinkOnceLinkage() || I->hasInternalLinkage() ||
|
|
I->hasWeakLinkage() /* FIXME: Verify correct */)) {
|
|
SwitchToDataSection(".data", I);
|
|
if (I->hasInternalLinkage())
|
|
O << "\t.local " << name << "\n";
|
|
|
|
O << "\t.comm " << name << "," << TD->getTypeSize(C->getType())
|
|
<< "," << (unsigned)TD->getTypeAlignment(C->getType());
|
|
O << "\t\t! ";
|
|
WriteAsOperand(O, I, true, true, &M);
|
|
O << "\n";
|
|
} else {
|
|
switch (I->getLinkage()) {
|
|
case GlobalValue::LinkOnceLinkage:
|
|
case GlobalValue::WeakLinkage: // FIXME: Verify correct for weak.
|
|
// Nonnull linkonce -> weak
|
|
O << "\t.weak " << name << "\n";
|
|
SwitchToDataSection("", I);
|
|
O << "\t.section\t\".llvm.linkonce.d." << name
|
|
<< "\",\"aw\",@progbits\n";
|
|
break;
|
|
|
|
case GlobalValue::AppendingLinkage:
|
|
// FIXME: appending linkage variables should go into a section of
|
|
// their name or something. For now, just emit them as external.
|
|
case GlobalValue::ExternalLinkage:
|
|
// If external or appending, declare as a global symbol
|
|
O << "\t.globl " << name << "\n";
|
|
// FALL THROUGH
|
|
case GlobalValue::InternalLinkage:
|
|
if (C->isNullValue())
|
|
SwitchToDataSection(".bss", I);
|
|
else
|
|
SwitchToDataSection(".data", I);
|
|
break;
|
|
case GlobalValue::GhostLinkage:
|
|
std::cerr << "Should not have any unmaterialized functions!\n";
|
|
abort();
|
|
case GlobalValue::DLLImportLinkage:
|
|
std::cerr << "DLLImport linkage is not supported by this target!\n";
|
|
abort();
|
|
case GlobalValue::DLLExportLinkage:
|
|
std::cerr << "DLLExport linkage is not supported by this target!\n";
|
|
abort();
|
|
default:
|
|
assert(0 && "Unknown linkage type!");
|
|
}
|
|
|
|
O << "\t.align " << Align << "\n";
|
|
O << "\t.type " << name << ",#object\n";
|
|
O << "\t.size " << name << "," << Size << "\n";
|
|
O << name << ":\t\t\t\t! ";
|
|
WriteAsOperand(O, I, true, true, &M);
|
|
O << "\n";
|
|
EmitGlobalConstant(C);
|
|
}
|
|
}
|
|
|
|
AsmPrinter::doFinalization(M);
|
|
return false; // success
|
|
}
|