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-rw-r--r--llvm/lib/Target/Sparc/EmitAssembly.cpp800
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diff --git a/llvm/lib/Target/Sparc/EmitAssembly.cpp b/llvm/lib/Target/Sparc/EmitAssembly.cpp
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--- a/llvm/lib/Target/Sparc/EmitAssembly.cpp
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-//===-- EmitAssembly.cpp - Emit Sparc Specific .s File ---------------------==//
-//
-// 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 implements all of the stuff necessary to output a .s file from
-// LLVM. The code in this file assumes that the specified module has already
-// been compiled into the internal data structures of the Module.
-//
-// This code largely consists of two LLVM Pass's: a FunctionPass and a Pass.
-// The FunctionPass is pipelined together with all of the rest of the code
-// generation stages, and the Pass runs at the end to emit code for global
-// variables and such.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/CodeGen/MachineConstantPool.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFunctionInfo.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Support/Mangler.h"
-#include "Support/StringExtras.h"
-#include "Support/Statistic.h"
-#include "SparcInternals.h"
-#include <string>
-using namespace llvm;
-
-namespace {
- Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
-
- //===--------------------------------------------------------------------===//
- // Utility functions
-
- /// getAsCString - Return the specified array as a C compatible string, only
- /// if the predicate isString() is true.
- ///
- std::string getAsCString(const ConstantArray *CVA) {
- assert(CVA->isString() && "Array is not string compatible!");
-
- std::string Result = "\"";
- for (unsigned i = 0; i != CVA->getNumOperands(); ++i) {
- unsigned char C = cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
-
- if (C == '"') {
- Result += "\\\"";
- } else if (C == '\\') {
- Result += "\\\\";
- } else if (isprint(C)) {
- Result += C;
- } else {
- Result += '\\'; // print all other chars as octal value
- // Convert C to octal representation
- Result += ((C >> 6) & 7) + '0';
- Result += ((C >> 3) & 7) + '0';
- Result += ((C >> 0) & 7) + '0';
- }
- }
- Result += "\"";
-
- return Result;
- }
-
- inline bool ArrayTypeIsString(const ArrayType* arrayType) {
- return (arrayType->getElementType() == Type::UByteTy ||
- arrayType->getElementType() == Type::SByteTy);
- }
-
- inline const std::string
- TypeToDataDirective(const Type* type) {
- switch(type->getPrimitiveID())
- {
- case Type::BoolTyID: case Type::UByteTyID: case Type::SByteTyID:
- return ".byte";
- case Type::UShortTyID: case Type::ShortTyID:
- return ".half";
- case Type::UIntTyID: case Type::IntTyID:
- return ".word";
- case Type::ULongTyID: case Type::LongTyID: case Type::PointerTyID:
- return ".xword";
- case Type::FloatTyID:
- return ".word";
- case Type::DoubleTyID:
- return ".xword";
- case Type::ArrayTyID:
- if (ArrayTypeIsString((ArrayType*) type))
- return ".ascii";
- else
- return "<InvaliDataTypeForPrinting>";
- default:
- return "<InvaliDataTypeForPrinting>";
- }
- }
-
- /// Get the size of the constant for the given target.
- /// If this is an unsized array, return 0.
- ///
- inline unsigned int
- ConstantToSize(const Constant* CV, const TargetMachine& target) {
- if (const ConstantArray* CVA = dyn_cast<ConstantArray>(CV)) {
- const ArrayType *aty = cast<ArrayType>(CVA->getType());
- if (ArrayTypeIsString(aty))
- return 1 + CVA->getNumOperands();
- }
-
- return target.findOptimalStorageSize(CV->getType());
- }
-
- /// Align data larger than one L1 cache line on L1 cache line boundaries.
- /// Align all smaller data on the next higher 2^x boundary (4, 8, ...).
- ///
- inline unsigned int
- SizeToAlignment(unsigned int size, const TargetMachine& target) {
- unsigned short cacheLineSize = target.getCacheInfo().getCacheLineSize(1);
- if (size > (unsigned) cacheLineSize / 2)
- return cacheLineSize;
- else
- for (unsigned sz=1; /*no condition*/; sz *= 2)
- if (sz >= size)
- return sz;
- }
-
- /// Get the size of the type and then use SizeToAlignment.
- ///
- inline unsigned int
- TypeToAlignment(const Type* type, const TargetMachine& target) {
- return SizeToAlignment(target.findOptimalStorageSize(type), target);
- }
-
- /// Get the size of the constant and then use SizeToAlignment.
- /// Handles strings as a special case;
- inline unsigned int
- ConstantToAlignment(const Constant* CV, const TargetMachine& target) {
- if (const ConstantArray* CVA = dyn_cast<ConstantArray>(CV))
- if (ArrayTypeIsString(cast<ArrayType>(CVA->getType())))
- return SizeToAlignment(1 + CVA->getNumOperands(), target);
-
- return TypeToAlignment(CV->getType(), target);
- }
-
-} // End anonymous namespace
-
-
-
-//===---------------------------------------------------------------------===//
-// Code abstracted away from the AsmPrinter
-//===---------------------------------------------------------------------===//
-
-namespace {
- class AsmPrinter {
- // Mangle symbol names appropriately
- Mangler *Mang;
-
- public:
- std::ostream &toAsm;
- const TargetMachine &Target;
-
- enum Sections {
- Unknown,
- Text,
- ReadOnlyData,
- InitRWData,
- ZeroInitRWData,
- } CurSection;
-
- AsmPrinter(std::ostream &os, const TargetMachine &T)
- : /* idTable(0), */ toAsm(os), Target(T), CurSection(Unknown) {}
-
- ~AsmPrinter() {
- delete Mang;
- }
-
- // (start|end)(Module|Function) - Callback methods invoked by subclasses
- void startModule(Module &M) {
- Mang = new Mangler(M);
- }
-
- void PrintZeroBytesToPad(int numBytes) {
- //
- // Always use single unsigned bytes for padding. We don't know upon
- // what data size the beginning address is aligned, so using anything
- // other than a byte may cause alignment errors in the assembler.
- //
- while (numBytes--)
- printSingleConstantValue(Constant::getNullValue(Type::UByteTy));
- }
-
- /// Print a single constant value.
- ///
- void printSingleConstantValue(const Constant* CV);
-
- /// Print a constant value or values (it may be an aggregate).
- /// Uses printSingleConstantValue() to print each individual value.
- ///
- void printConstantValueOnly(const Constant* CV, int numPadBytesAfter = 0);
-
- // Print a constant (which may be an aggregate) prefixed by all the
- // appropriate directives. Uses printConstantValueOnly() to print the
- // value or values.
- void printConstant(const Constant* CV, std::string valID = "") {
- if (valID.length() == 0)
- valID = getID(CV);
-
- toAsm << "\t.align\t" << ConstantToAlignment(CV, Target) << "\n";
-
- // Print .size and .type only if it is not a string.
- if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV))
- if (CVA->isString()) {
- // print it as a string and return
- toAsm << valID << ":\n";
- toAsm << "\t" << ".ascii" << "\t" << getAsCString(CVA) << "\n";
- return;
- }
-
- toAsm << "\t.type" << "\t" << valID << ",#object\n";
-
- unsigned int constSize = ConstantToSize(CV, Target);
- if (constSize)
- toAsm << "\t.size" << "\t" << valID << "," << constSize << "\n";
-
- toAsm << valID << ":\n";
-
- printConstantValueOnly(CV);
- }
-
- // enterSection - Use this method to enter a different section of the output
- // executable. This is used to only output necessary section transitions.
- //
- void enterSection(enum Sections S) {
- if (S == CurSection) return; // Only switch section if necessary
- CurSection = S;
-
- toAsm << "\n\t.section ";
- switch (S)
- {
- default: assert(0 && "Bad section name!");
- case Text: toAsm << "\".text\""; break;
- case ReadOnlyData: toAsm << "\".rodata\",#alloc"; break;
- case InitRWData: toAsm << "\".data\",#alloc,#write"; break;
- case ZeroInitRWData: toAsm << "\".bss\",#alloc,#write"; break;
- }
- toAsm << "\n";
- }
-
- // getID Wrappers - Ensure consistent usage
- // Symbol names in Sparc assembly language have these rules:
- // (a) Must match { letter | _ | . | $ } { letter | _ | . | $ | digit }*
- // (b) A name beginning in "." is treated as a local name.
- std::string getID(const Function *F) {
- return Mang->getValueName(F);
- }
- std::string getID(const BasicBlock *BB) {
- return ".L_" + getID(BB->getParent()) + "_" + Mang->getValueName(BB);
- }
- std::string getID(const GlobalVariable *GV) {
- return Mang->getValueName(GV);
- }
- std::string getID(const Constant *CV) {
- return ".C_" + Mang->getValueName(CV);
- }
- std::string getID(const GlobalValue *GV) {
- if (const GlobalVariable *V = dyn_cast<GlobalVariable>(GV))
- return getID(V);
- else if (const Function *F = dyn_cast<Function>(GV))
- return getID(F);
- assert(0 && "Unexpected type of GlobalValue!");
- return "";
- }
-
- // Combines expressions
- inline std::string ConstantArithExprToString(const ConstantExpr* CE,
- const TargetMachine &TM,
- const std::string &op) {
- return "(" + valToExprString(CE->getOperand(0), TM) + op
- + valToExprString(CE->getOperand(1), TM) + ")";
- }
-
- /// ConstantExprToString() - Convert a ConstantExpr to an asm expression
- /// and return this as a string.
- ///
- std::string ConstantExprToString(const ConstantExpr* CE,
- const TargetMachine& target);
-
- /// valToExprString - Helper function for ConstantExprToString().
- /// Appends result to argument string S.
- ///
- std::string valToExprString(const Value* V, const TargetMachine& target);
- };
-} // End anonymous namespace
-
-
-/// Print a single constant value.
-///
-void AsmPrinter::printSingleConstantValue(const Constant* CV) {
- assert(CV->getType() != Type::VoidTy &&
- CV->getType() != Type::TypeTy &&
- CV->getType() != Type::LabelTy &&
- "Unexpected type for Constant");
-
- assert((!isa<ConstantArray>(CV) && ! isa<ConstantStruct>(CV))
- && "Aggregate types should be handled outside this function");
-
- toAsm << "\t" << TypeToDataDirective(CV->getType()) << "\t";
-
- if (const ConstantPointerRef* CPR = dyn_cast<ConstantPointerRef>(CV)) {
- // This is a constant address for a global variable or method.
- // Use the name of the variable or method as the address value.
- assert(isa<GlobalValue>(CPR->getValue()) && "Unexpected non-global");
- toAsm << getID(CPR->getValue()) << "\n";
- } else if (isa<ConstantPointerNull>(CV)) {
- // Null pointer value
- toAsm << "0\n";
- } else if (const ConstantExpr* CE = dyn_cast<ConstantExpr>(CV)) {
- // Constant expression built from operators, constants, and symbolic addrs
- toAsm << ConstantExprToString(CE, Target) << "\n";
- } else if (CV->getType()->isPrimitiveType()) {
- // Check primitive types last
- if (CV->getType()->isFloatingPoint()) {
- // FP Constants are printed as integer constants to avoid losing
- // precision...
- double Val = cast<ConstantFP>(CV)->getValue();
- if (CV->getType() == Type::FloatTy) {
- float FVal = (float)Val;
- char *ProxyPtr = (char*)&FVal; // Abide by C TBAA rules
- toAsm << *(unsigned int*)ProxyPtr;
- } else if (CV->getType() == Type::DoubleTy) {
- char *ProxyPtr = (char*)&Val; // Abide by C TBAA rules
- toAsm << *(uint64_t*)ProxyPtr;
- } else {
- assert(0 && "Unknown floating point type!");
- }
-
- toAsm << "\t! " << CV->getType()->getDescription()
- << " value: " << Val << "\n";
- } else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
- toAsm << (int)CB->getValue() << "\n";
- } else {
- WriteAsOperand(toAsm, CV, false, false) << "\n";
- }
- } else {
- assert(0 && "Unknown elementary type for constant");
- }
-}
-
-/// Print a constant value or values (it may be an aggregate).
-/// Uses printSingleConstantValue() to print each individual value.
-///
-void AsmPrinter::printConstantValueOnly(const Constant* CV,
- int numPadBytesAfter) {
- if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
- if (CVA->isString()) {
- // print the string alone and return
- toAsm << "\t" << ".ascii" << "\t" << getAsCString(CVA) << "\n";
- } else {
- // Not a string. Print the values in successive locations
- const std::vector<Use> &constValues = CVA->getValues();
- for (unsigned i=0; i < constValues.size(); i++)
- printConstantValueOnly(cast<Constant>(constValues[i].get()));
- }
- } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
- // Print the fields in successive locations. Pad to align if needed!
- const StructLayout *cvsLayout =
- Target.getTargetData().getStructLayout(CVS->getType());
- const std::vector<Use>& constValues = CVS->getValues();
- unsigned sizeSoFar = 0;
- for (unsigned i=0, N = constValues.size(); i < N; i++) {
- const Constant* field = cast<Constant>(constValues[i].get());
-
- // Check if padding is needed and insert one or more 0s.
- unsigned fieldSize =
- Target.getTargetData().getTypeSize(field->getType());
- int padSize = ((i == N-1? cvsLayout->StructSize
- : cvsLayout->MemberOffsets[i+1])
- - cvsLayout->MemberOffsets[i]) - fieldSize;
- sizeSoFar += (fieldSize + padSize);
-
- // Now print the actual field value
- printConstantValueOnly(field, padSize);
- }
- assert(sizeSoFar == cvsLayout->StructSize &&
- "Layout of constant struct may be incorrect!");
- } else if (isa<ConstantAggregateZero>(CV)) {
- PrintZeroBytesToPad(Target.getTargetData().getTypeSize(CV->getType()));
- } else
- printSingleConstantValue(CV);
-
- if (numPadBytesAfter)
- PrintZeroBytesToPad(numPadBytesAfter);
-}
-
-/// ConstantExprToString() - Convert a ConstantExpr to an asm expression
-/// and return this as a string.
-///
-std::string AsmPrinter::ConstantExprToString(const ConstantExpr* CE,
- const TargetMachine& target) {
- std::string S;
- switch(CE->getOpcode()) {
- case Instruction::GetElementPtr:
- { // generate a symbolic expression for the byte address
- const Value* ptrVal = CE->getOperand(0);
- std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
- const TargetData &TD = target.getTargetData();
- S += "(" + valToExprString(ptrVal, target) + ") + ("
- + utostr(TD.getIndexedOffset(ptrVal->getType(),idxVec)) + ")";
- break;
- }
-
- case Instruction::Cast:
- // Support only non-converting casts for now, i.e., a no-op.
- // This assertion is not a complete check.
- assert(target.getTargetData().getTypeSize(CE->getType()) ==
- target.getTargetData().getTypeSize(CE->getOperand(0)->getType()));
- S += "(" + valToExprString(CE->getOperand(0), target) + ")";
- break;
-
- case Instruction::Add:
- S += ConstantArithExprToString(CE, target, ") + (");
- break;
-
- case Instruction::Sub:
- S += ConstantArithExprToString(CE, target, ") - (");
- break;
-
- case Instruction::Mul:
- S += ConstantArithExprToString(CE, target, ") * (");
- break;
-
- case Instruction::Div:
- S += ConstantArithExprToString(CE, target, ") / (");
- break;
-
- case Instruction::Rem:
- S += ConstantArithExprToString(CE, target, ") % (");
- break;
-
- case Instruction::And:
- // Logical && for booleans; bitwise & otherwise
- S += ConstantArithExprToString(CE, target,
- ((CE->getType() == Type::BoolTy)? ") && (" : ") & ("));
- break;
-
- case Instruction::Or:
- // Logical || for booleans; bitwise | otherwise
- S += ConstantArithExprToString(CE, target,
- ((CE->getType() == Type::BoolTy)? ") || (" : ") | ("));
- break;
-
- case Instruction::Xor:
- // Bitwise ^ for all types
- S += ConstantArithExprToString(CE, target, ") ^ (");
- break;
-
- default:
- assert(0 && "Unsupported operator in ConstantExprToString()");
- break;
- }
-
- return S;
-}
-
-/// valToExprString - Helper function for ConstantExprToString().
-/// Appends result to argument string S.
-///
-std::string AsmPrinter::valToExprString(const Value* V,
- const TargetMachine& target) {
- std::string S;
- bool failed = false;
- if (const Constant* CV = dyn_cast<Constant>(V)) { // symbolic or known
- if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV))
- S += std::string(CB == ConstantBool::True ? "1" : "0");
- else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV))
- S += itostr(CI->getValue());
- else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV))
- S += utostr(CI->getValue());
- else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
- S += ftostr(CFP->getValue());
- else if (isa<ConstantPointerNull>(CV))
- S += "0";
- else if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(CV))
- S += valToExprString(CPR->getValue(), target);
- else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV))
- S += ConstantExprToString(CE, target);
- else
- failed = true;
- } else if (const GlobalValue* GV = dyn_cast<GlobalValue>(V)) {
- S += getID(GV);
- } else
- failed = true;
-
- if (failed) {
- assert(0 && "Cannot convert value to string");
- S += "<illegal-value>";
- }
- return S;
-}
-
-
-//===----------------------------------------------------------------------===//
-// SparcAsmPrinter Code
-//===----------------------------------------------------------------------===//
-
-namespace {
-
- struct SparcAsmPrinter : public FunctionPass, public AsmPrinter {
- inline SparcAsmPrinter(std::ostream &os, const TargetMachine &t)
- : AsmPrinter(os, t) {}
-
- const Function *currFunction;
-
- const char *getPassName() const {
- return "Output Sparc Assembly for Functions";
- }
-
- virtual bool doInitialization(Module &M) {
- startModule(M);
- return false;
- }
-
- virtual bool runOnFunction(Function &F) {
- currFunction = &F;
- emitFunction(F);
- return false;
- }
-
- virtual bool doFinalization(Module &M) {
- emitGlobals(M);
- return false;
- }
-
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- }
-
- void emitFunction(const Function &F);
- private :
- void emitBasicBlock(const MachineBasicBlock &MBB);
- void emitMachineInst(const MachineInstr *MI);
-
- unsigned int printOperands(const MachineInstr *MI, unsigned int opNum);
- void printOneOperand(const MachineOperand &Op, MachineOpCode opCode);
-
- bool OpIsBranchTargetLabel(const MachineInstr *MI, unsigned int opNum);
- bool OpIsMemoryAddressBase(const MachineInstr *MI, unsigned int opNum);
-
- unsigned getOperandMask(unsigned Opcode) {
- switch (Opcode) {
- case V9::SUBccr:
- case V9::SUBcci: return 1 << 3; // Remove CC argument
- default: return 0; // By default, don't hack operands...
- }
- }
-
- void emitGlobals(const Module &M);
- void printGlobalVariable(const GlobalVariable *GV);
- };
-
-} // End anonymous namespace
-
-inline bool
-SparcAsmPrinter::OpIsBranchTargetLabel(const MachineInstr *MI,
- unsigned int opNum) {
- switch (MI->getOpcode()) {
- case V9::JMPLCALLr:
- case V9::JMPLCALLi:
- case V9::JMPLRETr:
- case V9::JMPLRETi:
- return (opNum == 0);
- default:
- return false;
- }
-}
-
-inline bool
-SparcAsmPrinter::OpIsMemoryAddressBase(const MachineInstr *MI,
- unsigned int opNum) {
- if (Target.getInstrInfo().isLoad(MI->getOpcode()))
- return (opNum == 0);
- else if (Target.getInstrInfo().isStore(MI->getOpcode()))
- return (opNum == 1);
- else
- return false;
-}
-
-
-#define PrintOp1PlusOp2(mop1, mop2, opCode) \
- printOneOperand(mop1, opCode); \
- toAsm << "+"; \
- printOneOperand(mop2, opCode);
-
-unsigned int
-SparcAsmPrinter::printOperands(const MachineInstr *MI,
- unsigned int opNum)
-{
- const MachineOperand& mop = MI->getOperand(opNum);
-
- if (OpIsBranchTargetLabel(MI, opNum)) {
- PrintOp1PlusOp2(mop, MI->getOperand(opNum+1), MI->getOpcode());
- return 2;
- } else if (OpIsMemoryAddressBase(MI, opNum)) {
- toAsm << "[";
- PrintOp1PlusOp2(mop, MI->getOperand(opNum+1), MI->getOpcode());
- toAsm << "]";
- return 2;
- } else {
- printOneOperand(mop, MI->getOpcode());
- return 1;
- }
-}
-
-void
-SparcAsmPrinter::printOneOperand(const MachineOperand &mop,
- MachineOpCode opCode)
-{
- bool needBitsFlag = true;
-
- if (mop.isHiBits32())
- toAsm << "%lm(";
- else if (mop.isLoBits32())
- toAsm << "%lo(";
- else if (mop.isHiBits64())
- toAsm << "%hh(";
- else if (mop.isLoBits64())
- toAsm << "%hm(";
- else
- needBitsFlag = false;
-
- switch (mop.getType())
- {
- case MachineOperand::MO_VirtualRegister:
- case MachineOperand::MO_CCRegister:
- case MachineOperand::MO_MachineRegister:
- {
- int regNum = (int)mop.getReg();
-
- if (regNum == Target.getRegInfo().getInvalidRegNum()) {
- // better to print code with NULL registers than to die
- toAsm << "<NULL VALUE>";
- } else {
- toAsm << "%" << Target.getRegInfo().getUnifiedRegName(regNum);
- }
- break;
- }
-
- case MachineOperand::MO_ConstantPoolIndex:
- {
- toAsm << ".CPI_" << currFunction->getName()
- << "_" << mop.getConstantPoolIndex();
- break;
- }
-
- case MachineOperand::MO_PCRelativeDisp:
- {
- const Value *Val = mop.getVRegValue();
- assert(Val && "\tNULL Value in SparcAsmPrinter");
-
- if (const BasicBlock *BB = dyn_cast<BasicBlock>(Val))
- toAsm << getID(BB);
- else if (const Function *M = dyn_cast<Function>(Val))
- toAsm << getID(M);
- else if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(Val))
- toAsm << getID(GV);
- else if (const Constant *CV = dyn_cast<Constant>(Val))
- toAsm << getID(CV);
- else
- assert(0 && "Unrecognized value in SparcAsmPrinter");
- break;
- }
-
- case MachineOperand::MO_SignExtendedImmed:
- toAsm << mop.getImmedValue();
- break;
-
- case MachineOperand::MO_UnextendedImmed:
- toAsm << (uint64_t) mop.getImmedValue();
- break;
-
- default:
- toAsm << mop; // use dump field
- break;
- }
-
- if (needBitsFlag)
- toAsm << ")";
-}
-
-void SparcAsmPrinter::emitMachineInst(const MachineInstr *MI) {
- unsigned Opcode = MI->getOpcode();
-
- if (Target.getInstrInfo().isDummyPhiInstr(Opcode))
- return; // IGNORE PHI NODES
-
- toAsm << "\t" << Target.getInstrInfo().getName(Opcode) << "\t";
-
- unsigned Mask = getOperandMask(Opcode);
-
- bool NeedComma = false;
- unsigned N = 1;
- for (unsigned OpNum = 0; OpNum < MI->getNumOperands(); OpNum += N)
- if (! ((1 << OpNum) & Mask)) { // Ignore this operand?
- if (NeedComma) toAsm << ", "; // Handle comma outputting
- NeedComma = true;
- N = printOperands(MI, OpNum);
- } else
- N = 1;
-
- toAsm << "\n";
- ++EmittedInsts;
-}
-
-void SparcAsmPrinter::emitBasicBlock(const MachineBasicBlock &MBB) {
- // Emit a label for the basic block
- toAsm << getID(MBB.getBasicBlock()) << ":\n";
-
- // Loop over all of the instructions in the basic block...
- for (MachineBasicBlock::const_iterator MII = MBB.begin(), MIE = MBB.end();
- MII != MIE; ++MII)
- emitMachineInst(MII);
- toAsm << "\n"; // Separate BB's with newlines
-}
-
-void SparcAsmPrinter::emitFunction(const Function &F) {
- std::string methName = getID(&F);
- toAsm << "!****** Outputing Function: " << methName << " ******\n";
-
- // Emit constant pool for this function
- const MachineConstantPool *MCP = MachineFunction::get(&F).getConstantPool();
- const std::vector<Constant*> &CP = MCP->getConstants();
-
- enterSection(AsmPrinter::ReadOnlyData);
- for (unsigned i = 0, e = CP.size(); i != e; ++i) {
- std::string cpiName = ".CPI_" + F.getName() + "_" + utostr(i);
- printConstant(CP[i], cpiName);
- }
-
- enterSection(AsmPrinter::Text);
- toAsm << "\t.align\t4\n\t.global\t" << methName << "\n";
- //toAsm << "\t.type\t" << methName << ",#function\n";
- toAsm << "\t.type\t" << methName << ", 2\n";
- toAsm << methName << ":\n";
-
- // Output code for all of the basic blocks in the function...
- MachineFunction &MF = MachineFunction::get(&F);
- for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); I != E;++I)
- emitBasicBlock(*I);
-
- // Output a .size directive so the debugger knows the extents of the function
- toAsm << ".EndOf_" << methName << ":\n\t.size "
- << methName << ", .EndOf_"
- << methName << "-" << methName << "\n";
-
- // Put some spaces between the functions
- toAsm << "\n\n";
-}
-
-void SparcAsmPrinter::printGlobalVariable(const GlobalVariable* GV) {
- if (GV->hasExternalLinkage())
- toAsm << "\t.global\t" << getID(GV) << "\n";
-
- if (GV->hasInitializer() && ! GV->getInitializer()->isNullValue()) {
- printConstant(GV->getInitializer(), getID(GV));
- } else {
- toAsm << "\t.align\t" << TypeToAlignment(GV->getType()->getElementType(),
- Target) << "\n";
- toAsm << "\t.type\t" << getID(GV) << ",#object\n";
- toAsm << "\t.reserve\t" << getID(GV) << ","
- << Target.findOptimalStorageSize(GV->getType()->getElementType())
- << "\n";
- }
-}
-
-void SparcAsmPrinter::emitGlobals(const Module &M) {
- // Output global variables...
- for (Module::const_giterator GI = M.gbegin(), GE = M.gend(); GI != GE; ++GI)
- if (! GI->isExternal()) {
- assert(GI->hasInitializer());
- if (GI->isConstant())
- enterSection(AsmPrinter::ReadOnlyData); // read-only, initialized data
- else if (GI->getInitializer()->isNullValue())
- enterSection(AsmPrinter::ZeroInitRWData); // read-write zero data
- else
- enterSection(AsmPrinter::InitRWData); // read-write non-zero data
-
- printGlobalVariable(GI);
- }
-
- toAsm << "\n";
-}
-
-FunctionPass *llvm::createAsmPrinterPass(std::ostream &Out,
- const TargetMachine &TM) {
- return new SparcAsmPrinter(Out, TM);
-}
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