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diff --git a/lib/Target/IA64/AsmPrinter/IA64AsmPrinter.cpp b/lib/Target/IA64/AsmPrinter/IA64AsmPrinter.cpp
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-//===-- IA64AsmPrinter.cpp - Print out IA64 LLVM as assembly --------------===//
-//
-// 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 assembly accepted by the GNU binutils 'gas'
-// assembler. The Intel 'ias' and HP-UX 'as' assemblers *may* choke on this
-// output, but if so that's a bug I'd like to hear about: please file a bug
-// report in bugzilla. FYI, the not too bad 'ias' assembler is bundled with
-// the Intel C/C++ compiler for Itanium Linux.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "asm-printer"
-#include "IA64.h"
-#include "IA64TargetMachine.h"
-#include "llvm/Module.h"
-#include "llvm/MDNode.h"
-#include "llvm/Type.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/DwarfWriter.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/ADT/Statistic.h"
-using namespace llvm;
-
-STATISTIC(EmittedInsts, "Number of machine instrs printed");
-
-namespace {
- class IA64AsmPrinter : public AsmPrinter {
- std::set<std::string> ExternalFunctionNames, ExternalObjectNames;
- public:
- explicit IA64AsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
- const TargetAsmInfo *T, bool V)
- : AsmPrinter(O, TM, T, V) {}
-
- virtual const char *getPassName() const {
- return "IA64 Assembly Printer";
- }
-
- /// printInstruction - This method is automatically generated by tablegen
- /// from the instruction set description. This method returns true if the
- /// machine instruction was sufficiently described to print it, otherwise it
- /// returns false.
- bool printInstruction(const MachineInstr *MI);
-
- // This method is used by the tablegen'erated instruction printer.
- void printOperand(const MachineInstr *MI, unsigned OpNo){
- const MachineOperand &MO = MI->getOperand(OpNo);
- if (MO.getType() == MachineOperand::MO_Register) {
- assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
- "Not physref??");
- //XXX Bug Workaround: See note in Printer::doInitialization about %.
- O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
- } else {
- printOp(MO);
- }
- }
-
- void printS8ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- int val=(unsigned int)MI->getOperand(OpNo).getImm();
- if(val>=128) val=val-256; // if negative, flip sign
- O << val;
- }
- void printS14ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- int val=(unsigned int)MI->getOperand(OpNo).getImm();
- if(val>=8192) val=val-16384; // if negative, flip sign
- O << val;
- }
- void printS22ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- int val=(unsigned int)MI->getOperand(OpNo).getImm();
- if(val>=2097152) val=val-4194304; // if negative, flip sign
- O << val;
- }
- void printU64ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (uint64_t)MI->getOperand(OpNo).getImm();
- }
- void printS64ImmOperand(const MachineInstr *MI, unsigned OpNo) {
-// XXX : nasty hack to avoid GPREL22 "relocation truncated to fit" linker
-// errors - instead of add rX = @gprel(CPI<whatever>), r1;; we now
-// emit movl rX = @gprel(CPI<whatever);;
-// add rX = rX, r1;
-// this gives us 64 bits instead of 22 (for the add long imm) to play
-// with, which shuts up the linker. The problem is that the constant
-// pool entries aren't immediates at this stage, so we check here.
-// If it's an immediate, print it the old fashioned way. If it's
-// not, we print it as a constant pool index.
- if (MI->getOperand(OpNo).isImm()) {
- O << (int64_t)MI->getOperand(OpNo).getImm();
- } else { // this is a constant pool reference: FIXME: assert this
- printOp(MI->getOperand(OpNo));
- }
- }
-
- void printGlobalOperand(const MachineInstr *MI, unsigned OpNo) {
- printOp(MI->getOperand(OpNo), false); // this is NOT a br.call instruction
- }
-
- void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
- printOp(MI->getOperand(OpNo), true); // this is a br.call instruction
- }
-
- void printMachineInstruction(const MachineInstr *MI);
- void printOp(const MachineOperand &MO, bool isBRCALLinsn= false);
- void PrintGlobalVariable(const GlobalVariable *GVar);
- bool runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
- };
-} // end of anonymous namespace
-
-
-// Include the auto-generated portion of the assembly writer.
-#include "IA64GenAsmWriter.inc"
-
-/// runOnMachineFunction - This uses the printMachineInstruction()
-/// method to print assembly for each instruction.
-///
-bool IA64AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- this->MF = &MF;
-
- SetupMachineFunction(MF);
- O << "\n\n";
-
- // Print out constants referenced by the function
- EmitConstantPool(MF.getConstantPool());
-
- const Function *F = MF.getFunction();
- SwitchToSection(TAI->SectionForGlobal(F));
-
- // Print out labels for the function.
- EmitAlignment(MF.getAlignment());
- O << "\t.global\t" << CurrentFnName << '\n';
-
- printVisibility(CurrentFnName, F->getVisibility());
-
- 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 there are any predecessors.
- if (!I->pred_empty()) {
- printBasicBlockLabel(I, true, true);
- O << '\n';
- }
- for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
- // Print the assembly for the instruction.
- printMachineInstruction(II);
- }
- }
-
- // We didn't modify anything.
- return false;
-}
-
-void IA64AsmPrinter::printOp(const MachineOperand &MO,
- bool isBRCALLinsn /* = false */) {
- const TargetRegisterInfo &RI = *TM.getRegisterInfo();
- switch (MO.getType()) {
- case MachineOperand::MO_Register:
- O << RI.get(MO.getReg()).AsmName;
- return;
-
- case MachineOperand::MO_Immediate:
- O << MO.getImm();
- return;
- case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB());
- return;
- case MachineOperand::MO_ConstantPoolIndex: {
- O << "@gprel(" << TAI->getPrivateGlobalPrefix()
- << "CPI" << getFunctionNumber() << "_" << MO.getIndex() << ")";
- return;
- }
-
- case MachineOperand::MO_GlobalAddress: {
-
- // functions need @ltoff(@fptr(fn_name)) form
- GlobalValue *GV = MO.getGlobal();
- Function *F = dyn_cast<Function>(GV);
-
- bool Needfptr=false; // if we're computing an address @ltoff(X), do
- // we need to decorate it so it becomes
- // @ltoff(@fptr(X)) ?
- if (F && !isBRCALLinsn /*&& F->isDeclaration()*/)
- Needfptr=true;
-
- // if this is the target of a call instruction, we should define
- // the function somewhere (GNU gas has no problem without this, but
- // Intel ias rightly complains of an 'undefined symbol')
-
- if (F /*&& isBRCALLinsn*/ && F->isDeclaration())
- ExternalFunctionNames.insert(Mang->getMangledName(MO.getGlobal()));
- else
- if (GV->isDeclaration()) // e.g. stuff like 'stdin'
- ExternalObjectNames.insert(Mang->getMangledName(MO.getGlobal()));
-
- if (!isBRCALLinsn)
- O << "@ltoff(";
- if (Needfptr)
- O << "@fptr(";
- O << Mang->getMangledName(MO.getGlobal());
-
- if (Needfptr && !isBRCALLinsn)
- O << "#))"; // close both fptr( and ltoff(
- else {
- if (Needfptr)
- O << "#)"; // close only fptr(
- if (!isBRCALLinsn)
- O << "#)"; // close only ltoff(
- }
-
- int Offset = MO.getOffset();
- if (Offset > 0)
- O << " + " << Offset;
- else if (Offset < 0)
- O << " - " << -Offset;
- return;
- }
- case MachineOperand::MO_ExternalSymbol:
- O << MO.getSymbolName();
- ExternalFunctionNames.insert(MO.getSymbolName());
- return;
- default:
- O << "<AsmPrinter: unknown operand type: " << MO.getType() << " >"; return;
- }
-}
-
-/// printMachineInstruction -- Print out a single IA64 LLVM instruction
-/// MI to the current output stream.
-///
-void IA64AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
- ++EmittedInsts;
-
- // Call the autogenerated instruction printer routines.
- printInstruction(MI);
-}
-
-bool IA64AsmPrinter::doInitialization(Module &M) {
- bool Result = AsmPrinter::doInitialization(M);
-
- O << "\n.ident \"LLVM-ia64\"\n\n"
- << "\t.psr lsb\n" // should be "msb" on HP-UX, for starters
- << "\t.radix C\n"
- << "\t.psr abi64\n"; // we only support 64 bits for now
- return Result;
-}
-
-void IA64AsmPrinter::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;
-
- O << "\n\n";
- std::string name = Mang->getMangledName(GVar);
- Constant *C = GVar->getInitializer();
- if (isa<MDNode>(C) || isa<MDString>(C))
- return;
- unsigned Size = TD->getTypeAllocSize(C->getType());
- unsigned Align = TD->getPreferredAlignmentLog(GVar);
-
- printVisibility(name, GVar->getVisibility());
-
- SwitchToSection(TAI->SectionForGlobal(GVar));
-
- if (C->isNullValue() && !GVar->hasSection()) {
- if (!GVar->isThreadLocal() &&
- (GVar->hasLocalLinkage() || GVar->isWeakForLinker())) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
-
- if (GVar->hasLocalLinkage()) {
- O << "\t.lcomm " << name << "#," << Size
- << ',' << (1 << Align);
- O << '\n';
- } else {
- O << "\t.common " << name << "#," << Size
- << ',' << (1 << Align);
- O << '\n';
- }
-
- return;
- }
- }
-
- switch (GVar->getLinkage()) {
- case GlobalValue::LinkOnceAnyLinkage:
- case GlobalValue::LinkOnceODRLinkage:
- case GlobalValue::CommonLinkage:
- case GlobalValue::WeakAnyLinkage:
- case GlobalValue::WeakODRLinkage:
- // Nonnull linkonce -> weak
- O << "\t.weak " << name << '\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 << TAI->getGlobalDirective() << name << '\n';
- // FALL THROUGH
- case GlobalValue::InternalLinkage:
- case GlobalValue::PrivateLinkage:
- case GlobalValue::LinkerPrivateLinkage:
- break;
- case GlobalValue::GhostLinkage:
- llvm_unreachable("GhostLinkage cannot appear in IA64AsmPrinter!");
- case GlobalValue::DLLImportLinkage:
- llvm_unreachable("DLLImport linkage is not supported by this target!");
- case GlobalValue::DLLExportLinkage:
- llvm_unreachable("DLLExport linkage is not supported by this target!");
- default:
- llvm_unreachable("Unknown linkage type!");
- }
-
- EmitAlignment(Align, GVar);
-
- if (TAI->hasDotTypeDotSizeDirective()) {
- O << "\t.type " << name << ",@object\n";
- O << "\t.size " << name << ',' << Size << '\n';
- }
-
- O << name << ":\n";
- EmitGlobalConstant(C);
-}
-
-
-bool IA64AsmPrinter::doFinalization(Module &M) {
- // we print out ".global X \n .type X, @function" for each external function
- O << "\n\n// br.call targets referenced (and not defined) above: \n";
- for (std::set<std::string>::iterator i = ExternalFunctionNames.begin(),
- e = ExternalFunctionNames.end(); i!=e; ++i) {
- O << "\t.global " << *i << "\n\t.type " << *i << ", @function\n";
- }
- O << "\n\n";
-
- // we print out ".global X \n .type X, @object" for each external object
- O << "\n\n// (external) symbols referenced (and not defined) above: \n";
- for (std::set<std::string>::iterator i = ExternalObjectNames.begin(),
- e = ExternalObjectNames.end(); i!=e; ++i) {
- O << "\t.global " << *i << "\n\t.type " << *i << ", @object\n";
- }
- O << "\n\n";
-
- return AsmPrinter::doFinalization(M);
-}
-
-/// createIA64CodePrinterPass - Returns a pass that prints the IA64
-/// assembly code for a MachineFunction to the given output stream, using
-/// the given target machine description.
-///
-FunctionPass *llvm::createIA64CodePrinterPass(formatted_raw_ostream &o,
- TargetMachine &tm,
- bool verbose) {
- return new IA64AsmPrinter(o, tm, tm.getTargetAsmInfo(), verbose);
-}
-
-// Force static initialization.
-extern "C" void LLVMInitializeIA64AsmPrinter() {
- TargetRegistry::RegisterAsmPrinter(TheIA64Target, createIA64CodePrinterPass);
-}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-04-26 18:28:45 +0000