-//===-- EmitAssembly.cpp - Emit Sparc Specific .s File ---------------------==//
+//===-- EmitAssembly.cpp - Emit SparcV9 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 neccesary to output a .s file from
+// 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.
//
//
//===----------------------------------------------------------------------===//
-#include "SparcInternals.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFunctionInfo.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
-#include "llvm/SlotCalculator.h"
#include "llvm/Pass.h"
#include "llvm/Assembly/Writer.h"
-#include "Support/StringExtras.h"
-using std::string;
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Support/Mangler.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Statistic.h"
+#include "SparcV9Internals.h"
+#include "MachineFunctionInfo.h"
+#include <string>
+using namespace llvm;
namespace {
+ Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
+}
-class GlobalIdTable: public Annotation {
- static AnnotationID AnnotId;
- friend class AsmPrinter; // give access to AnnotId
-
- typedef hash_map<const Value*, int> ValIdMap;
- typedef ValIdMap::const_iterator ValIdMapConstIterator;
- typedef ValIdMap:: iterator ValIdMapIterator;
-public:
- SlotCalculator Table; // map anonymous values to unique integer IDs
- ValIdMap valToIdMap; // used for values not handled by SlotCalculator
-
- GlobalIdTable(Module* M) : Annotation(AnnotId), Table(M, true) {}
-};
+namespace {
+ struct SparcV9AsmPrinter : public AsmPrinter {
+ public:
+ enum Sections {
+ Unknown,
+ Text,
+ ReadOnlyData,
+ InitRWData,
+ ZeroInitRWData,
+ } CurSection;
+
+ SparcV9AsmPrinter(std::ostream &OS, TargetMachine &TM)
+ : AsmPrinter(OS, TM), CurSection(Unknown) {
+ ZeroDirective = 0; // No way to get zeros.
+ Data16bitsDirective = "\t.half\t";
+ Data32bitsDirective = "\t.word\t";
+ Data64bitsDirective = "\t.xword\t";
+ CommentString = "!";
+ }
-AnnotationID GlobalIdTable::AnnotId =
- AnnotationManager::getID("ASM PRINTER GLOBAL TABLE ANNOT");
-
-//===---------------------------------------------------------------------===//
-// Code Shared By the two printer passes, as a mixin
-//===---------------------------------------------------------------------===//
-
-class AsmPrinter {
- GlobalIdTable* idTable;
-public:
- std::ostream &toAsm;
- const TargetMachine &Target;
+ const char *getPassName() const {
+ return "SparcV9 Assembly Printer";
+ }
+
+ // 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, const std::string &valID) {
+ emitAlignment(TM.getTargetData().getTypeAlignmentShift(CV->getType()));
+ O << "\t.type" << "\t" << valID << ",#object\n";
+
+ unsigned constSize = TM.getTargetData().getTypeSize(CV->getType());
+ O << "\t.size" << "\t" << valID << "," << constSize << "\n";
- enum Sections {
- Unknown,
- Text,
- ReadOnlyData,
- InitRWData,
- ZeroInitRWData,
- } CurSection;
-
- AsmPrinter(std::ostream &os, const TargetMachine &T)
- : idTable(0), toAsm(os), Target(T), CurSection(Unknown) {}
+ O << valID << ":\n";
- // (start|end)(Module|Function) - Callback methods to be invoked by subclasses
- void startModule(Module &M) {
- // Create the global id table if it does not already exist
- idTable = (GlobalIdTable*)M.getAnnotation(GlobalIdTable::AnnotId);
- if (idTable == NULL) {
- idTable = new GlobalIdTable(&M);
- M.addAnnotation(idTable);
+ emitGlobalConstant(CV);
}
- }
- void startFunction(Function &F) {
- // Make sure the slot table has information about this function...
- idTable->Table.incorporateFunction(&F);
- }
- void endFunction(Function &) {
- idTable->Table.purgeFunction(); // Forget all about F
- }
- void endModule() {
- }
- // Check if a value is external or accessible from external code.
- bool isExternal(const Value* V) {
- const GlobalValue *GV = dyn_cast<GlobalValue>(V);
- return GV && GV->hasExternalLinkage();
- }
-
- // enterSection - Use this method to enter a different section of the output
- // executable. This is used to only output neccesary section transitions.
- //
- void enterSection(enum Sections S) {
- if (S == CurSection) return; // Only switch section if neccesary
- CurSection = S;
-
- toAsm << "\n\t.section ";
- switch (S)
+ // 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;
+
+ O << "\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;
+ case Text: O << "\".text\""; break;
+ case ReadOnlyData: O << "\".rodata\",#alloc"; break;
+ case InitRWData: O << "\".data\",#alloc,#write"; break;
+ case ZeroInitRWData: O << "\".bss\",#alloc,#write"; break;
}
- toAsm << "\n";
- }
+ O << "\n";
+ }
- static string getValidSymbolName(const string &S) {
- string Result;
-
- // Symbol names in Sparc assembly language have these rules:
+ // getID Wrappers - Ensure consistent usage
+ // Symbol names in SparcV9 assembly language have these rules:
// (a) Must match { letter | _ | . | $ } { letter | _ | . | $ | digit }*
// (b) A name beginning in "." is treated as a local name.
- //
- if (isdigit(S[0]))
- Result = "ll";
-
- for (unsigned i = 0; i < S.size(); ++i)
- {
- char C = S[i];
- if (C == '_' || C == '.' || C == '$' || isalpha(C) || isdigit(C))
- Result += C;
- else
- {
- Result += '_';
- Result += char('0' + ((unsigned char)C >> 4));
- Result += char('0' + (C & 0xF));
- }
- }
- return Result;
- }
-
- // getID - Return a valid identifier for the specified value. Base it on
- // the name of the identifier if possible (qualified by the type), and
- // use a numbered value based on prefix otherwise.
- // FPrefix is always prepended to the output identifier.
- //
- string getID(const Value *V, const char *Prefix, const char *FPrefix = 0) {
- string Result = FPrefix ? FPrefix : ""; // "Forced prefix"
-
- Result += V->hasName() ? V->getName() : string(Prefix);
-
- // Qualify all internal names with a unique id.
- if (!isExternal(V)) {
- int valId = idTable->Table.getValSlot(V);
- if (valId == -1) {
- GlobalIdTable::ValIdMapConstIterator I = idTable->valToIdMap.find(V);
- if (I == idTable->valToIdMap.end())
- valId = idTable->valToIdMap[V] = idTable->valToIdMap.size();
- else
- valId = I->second;
- }
- Result = Result + "_" + itostr(valId);
-
- // Replace or prefix problem characters in the name
- Result = getValidSymbolName(Result);
+ std::string getID(const Function *F) {
+ return Mang->getValueName(F);
}
-
- return Result;
- }
-
- // getID Wrappers - Ensure consistent usage...
- string getID(const Function *F) {
- return getID(F, "LLVMFunction_");
- }
- string getID(const BasicBlock *BB) {
- return getID(BB, "LL", (".L_"+getID(BB->getParent())+"_").c_str());
- }
- string getID(const GlobalVariable *GV) {
- return getID(GV, "LLVMGlobal_");
- }
- string getID(const Constant *CV) {
- return getID(CV, "LLVMConst_", ".C_");
- }
- 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 "";
- }
-
- // ConstantExprToString() - Convert a ConstantExpr to an asm expression
- // and return this as a string.
- string ConstantExprToString(const ConstantExpr* CE,
- const TargetMachine& target) {
- 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 += "(" + valToExprString(CE->getOperand(0), target) + ") + ("
- + valToExprString(CE->getOperand(1), target) + ")";
- break;
-
- default:
- assert(0 && "Unsupported operator in ConstantExprToString()");
- break;
+ std::string getID(const BasicBlock *BB) {
+ return ".L_" + getID(BB->getParent()) + "_" + Mang->getValueName(BB);
}
-
- return S;
- }
-
- // valToExprString - Helper function for ConstantExprToString().
- // Appends result to argument string S.
- //
- string valToExprString(const Value* V, const TargetMachine& target) {
- 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 += 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);
+ std::string getID(const GlobalVariable *GV) {
+ return Mang->getValueName(GV);
}
- else
- failed = true;
-
- if (failed) {
- assert(0 && "Cannot convert value to string");
- S += "<illegal-value>";
+ 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 "";
}
- return S;
- }
-
-};
-
-
-
-//===----------------------------------------------------------------------===//
-// SparcFunctionAsmPrinter Code
-//===----------------------------------------------------------------------===//
-
-struct SparcFunctionAsmPrinter : public FunctionPass, public AsmPrinter {
- inline SparcFunctionAsmPrinter(std::ostream &os, const TargetMachine &t)
- : AsmPrinter(os, t) {}
-
- const char *getPassName() const {
- return "Output Sparc Assembly for Functions";
- }
-
- virtual bool doInitialization(Module &M) {
- startModule(M);
- return false;
- }
-
- virtual bool runOnFunction(Function &F) {
- startFunction(F);
- emitFunction(F);
- endFunction(F);
- return false;
- }
- virtual bool doFinalization(Module &M) {
- endModule();
- return false;
- }
+ virtual bool runOnMachineFunction(MachineFunction &MF) {
+ setupMachineFunction(MF);
+ emitFunction(MF);
+ return false;
+ }
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- }
+ virtual bool doFinalization(Module &M) {
+ emitGlobals(M);
+ AsmPrinter::doFinalization(M);
+ return false;
+ }
- void emitFunction(const Function &F);
-private :
- void emitBasicBlock(const MachineBasicBlock &MBB);
- void emitMachineInst(const MachineInstr *MI);
+ void emitFunction(MachineFunction &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);
+ 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);
+ bool OpIsBranchTargetLabel(const MachineInstr *MI, unsigned int opNum);
+ bool OpIsMemoryAddressBase(const MachineInstr *MI, unsigned int opNum);
- unsigned getOperandMask(unsigned Opcode) {
- switch (Opcode) {
- case V9::SUBcc: return 1 << 3; // Remove CC argument
- //case BA: return 1 << 0; // Remove Arg #0, which is always null or xcc
- default: return 0; // By default, don't hack operands...
+ 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
-SparcFunctionAsmPrinter::OpIsBranchTargetLabel(const MachineInstr *MI,
- unsigned int opNum) {
- switch (MI->getOpCode()) {
- case V9::JMPLCALL:
- case V9::JMPLRET:
+SparcV9AsmPrinter::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
-SparcFunctionAsmPrinter::OpIsMemoryAddressBase(const MachineInstr *MI,
- unsigned int opNum) {
- if (Target.getInstrInfo().isLoad(MI->getOpCode()))
+SparcV9AsmPrinter::OpIsMemoryAddressBase(const MachineInstr *MI,
+ unsigned int opNum) {
+ if (TM.getInstrInfo()->isLoad(MI->getOpcode()))
return (opNum == 0);
- else if (Target.getInstrInfo().isStore(MI->getOpCode()))
+ else if (TM.getInstrInfo()->isStore(MI->getOpcode()))
return (opNum == 1);
else
return false;
}
-
-#define PrintOp1PlusOp2(mop1, mop2) \
- printOneOperand(mop1); \
- toAsm << "+"; \
- printOneOperand(mop2);
-
unsigned int
-SparcFunctionAsmPrinter::printOperands(const MachineInstr *MI,
- unsigned int opNum)
-{
+SparcV9AsmPrinter::printOperands(const MachineInstr *MI, unsigned opNum) {
const MachineOperand& mop = MI->getOperand(opNum);
-
- if (OpIsBranchTargetLabel(MI, opNum))
- {
- PrintOp1PlusOp2(mop, MI->getOperand(opNum+1));
- return 2;
- }
- else if (OpIsMemoryAddressBase(MI, opNum))
- {
- toAsm << "[";
- PrintOp1PlusOp2(mop, MI->getOperand(opNum+1));
- toAsm << "]";
- return 2;
- }
- else
- {
- printOneOperand(mop);
- return 1;
- }
+ if (OpIsBranchTargetLabel(MI, opNum)) {
+ printOneOperand(mop, MI->getOpcode());
+ O << "+";
+ printOneOperand(MI->getOperand(opNum+1), MI->getOpcode());
+ return 2;
+ } else if (OpIsMemoryAddressBase(MI, opNum)) {
+ O << "[";
+ printOneOperand(mop, MI->getOpcode());
+ O << "+";
+ printOneOperand(MI->getOperand(opNum+1), MI->getOpcode());
+ O << "]";
+ return 2;
+ } else {
+ printOneOperand(mop, MI->getOpcode());
+ return 1;
+ }
}
-
void
-SparcFunctionAsmPrinter::printOneOperand(const MachineOperand &mop)
+SparcV9AsmPrinter::printOneOperand(const MachineOperand &mop,
+ MachineOpCode opCode)
{
bool needBitsFlag = true;
- if (mop.opHiBits32())
- toAsm << "%lm(";
- else if (mop.opLoBits32())
- toAsm << "%lo(";
- else if (mop.opHiBits64())
- toAsm << "%hh(";
- else if (mop.opLoBits64())
- toAsm << "%hm(";
+ if (mop.isHiBits32())
+ O << "%lm(";
+ else if (mop.isLoBits32())
+ O << "%lo(";
+ else if (mop.isHiBits64())
+ O << "%hh(";
+ else if (mop.isLoBits64())
+ O << "%hm(";
else
needBitsFlag = false;
case MachineOperand::MO_CCRegister:
case MachineOperand::MO_MachineRegister:
{
- int RegNum = (int)mop.getAllocatedRegNum();
+ int regNum = (int)mop.getReg();
- // better to print code with NULL registers than to die
- if (RegNum == Target.getRegInfo().getInvalidRegNum()) {
- toAsm << "<NULL VALUE>";
+ if (regNum == TM.getRegInfo()->getInvalidRegNum()) {
+ // better to print code with NULL registers than to die
+ O << "<NULL VALUE>";
} else {
- toAsm << "%" << Target.getRegInfo().getUnifiedRegName(RegNum);
+ O << "%" << TM.getRegInfo()->getUnifiedRegName(regNum);
}
break;
}
+ case MachineOperand::MO_ConstantPoolIndex:
+ {
+ O << ".CPI_" << CurrentFnName << "_" << mop.getConstantPoolIndex();
+ break;
+ }
+
case MachineOperand::MO_PCRelativeDisp:
{
const Value *Val = mop.getVRegValue();
- assert(Val && "\tNULL Value in SparcFunctionAsmPrinter");
+ assert(Val && "\tNULL Value in SparcV9AsmPrinter");
- if (const BasicBlock *BB = dyn_cast<const BasicBlock>(Val))
- toAsm << getID(BB);
- else if (const Function *M = dyn_cast<Function>(Val))
- toAsm << getID(M);
+ if (const BasicBlock *BB = dyn_cast<BasicBlock>(Val))
+ O << getID(BB);
+ else if (const Function *F = dyn_cast<Function>(Val))
+ O << getID(F);
else if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(Val))
- toAsm << getID(GV);
+ O << getID(GV);
else if (const Constant *CV = dyn_cast<Constant>(Val))
- toAsm << getID(CV);
+ O << getID(CV);
else
- assert(0 && "Unrecognized value in SparcFunctionAsmPrinter");
+ assert(0 && "Unrecognized value in SparcV9AsmPrinter");
break;
}
case MachineOperand::MO_SignExtendedImmed:
- toAsm << mop.getImmedValue();
+ O << mop.getImmedValue();
break;
case MachineOperand::MO_UnextendedImmed:
- toAsm << (uint64_t) mop.getImmedValue();
+ O << (uint64_t) mop.getImmedValue();
break;
default:
- toAsm << mop; // use dump field
+ O << mop; // use dump field
break;
}
if (needBitsFlag)
- toAsm << ")";
+ O << ")";
}
+void SparcV9AsmPrinter::emitMachineInst(const MachineInstr *MI) {
+ unsigned Opcode = MI->getOpcode();
-void
-SparcFunctionAsmPrinter::emitMachineInst(const MachineInstr *MI)
-{
- unsigned Opcode = MI->getOpCode();
-
- if (Target.getInstrInfo().isDummyPhiInstr(Opcode))
- return; // IGNORE PHI NODES
+ if (Opcode == V9::PHI)
+ return; // Ignore Machine-PHI nodes.
- toAsm << "\t" << Target.getInstrInfo().getName(Opcode) << "\t";
+ O << "\t" << TM.getInstrInfo()->getName(Opcode) << "\t";
unsigned Mask = getOperandMask(Opcode);
unsigned N = 1;
for (unsigned OpNum = 0; OpNum < MI->getNumOperands(); OpNum += N)
if (! ((1 << OpNum) & Mask)) { // Ignore this operand?
- if (NeedComma) toAsm << ", "; // Handle comma outputing
+ if (NeedComma) O << ", "; // Handle comma outputting
NeedComma = true;
N = printOperands(MI, OpNum);
} else
N = 1;
- toAsm << "\n";
+ O << "\n";
+ ++EmittedInsts;
}
-void
-SparcFunctionAsmPrinter::emitBasicBlock(const MachineBasicBlock &MBB)
-{
+void SparcV9AsmPrinter::emitBasicBlock(const MachineBasicBlock &MBB) {
// Emit a label for the basic block
- toAsm << getID(MBB.getBasicBlock()) << ":\n";
+ O << 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"; // Seperate BB's with newlines
+ emitMachineInst(MII);
+ O << "\n"; // Separate BB's with newlines
}
-void
-SparcFunctionAsmPrinter::emitFunction(const Function &F)
-{
- string methName = getID(&F);
- toAsm << "!****** Outputing Function: " << methName << " ******\n";
- 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";
+void SparcV9AsmPrinter::emitFunction(MachineFunction &MF) {
+ O << "!****** Outputing Function: " << CurrentFnName << " ******\n";
+
+ // Emit constant pool for this function
+ const MachineConstantPool *MCP = MF.getConstantPool();
+ const std::vector<Constant*> &CP = MCP->getConstants();
+
+ enterSection(ReadOnlyData);
+ for (unsigned i = 0, e = CP.size(); i != e; ++i) {
+ std::string cpiName = ".CPI_" + CurrentFnName + "_" + utostr(i);
+ printConstant(CP[i], cpiName);
+ }
+
+ enterSection(Text);
+ O << "\t.align\t4\n\t.global\t" << CurrentFnName << "\n";
+ //O << "\t.type\t" << CurrentFnName << ",#function\n";
+ O << "\t.type\t" << CurrentFnName << ", 2\n";
+ O << CurrentFnName << ":\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";
+ O << ".EndOf_" << CurrentFnName << ":\n\t.size "
+ << CurrentFnName << ", .EndOf_"
+ << CurrentFnName << "-" << CurrentFnName << "\n";
// Put some spaces between the functions
- toAsm << "\n\n";
+ O << "\n\n";
}
-} // End anonymous namespace
-
-Pass *UltraSparc::getFunctionAsmPrinterPass(std::ostream &Out) {
- return new SparcFunctionAsmPrinter(Out, *this);
-}
-
-
-
-
-
-//===----------------------------------------------------------------------===//
-// SparcFunctionAsmPrinter Code
-//===----------------------------------------------------------------------===//
-
-namespace {
-
-class SparcModuleAsmPrinter : public Pass, public AsmPrinter {
-public:
- SparcModuleAsmPrinter(std::ostream &os, TargetMachine &t)
- : AsmPrinter(os, t) {}
-
- const char *getPassName() const { return "Output Sparc Assembly for Module"; }
-
- virtual bool run(Module &M) {
- startModule(M);
- emitGlobalsAndConstants(M);
- endModule();
- return false;
- }
-
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- }
-
-private:
- void emitGlobalsAndConstants (const Module &M);
-
- void printGlobalVariable (const GlobalVariable *GV);
- void PrintZeroBytesToPad (int numBytes);
- void printSingleConstantValue (const Constant* CV);
- void printConstantValueOnly (const Constant* CV, int numPadBytesAfter = 0);
- void printConstant (const Constant* CV, string valID = "");
-
- static void FoldConstants (const Module &M,
- hash_set<const Constant*> &moduleConstants);
-};
-
-
-// Can we treat the specified array as a string? Only if it is an array of
-// ubytes or non-negative sbytes.
-//
-static bool isStringCompatible(const ConstantArray *CVA) {
- const Type *ETy = cast<ArrayType>(CVA->getType())->getElementType();
- if (ETy == Type::UByteTy) return true;
- if (ETy != Type::SByteTy) return false;
-
- for (unsigned i = 0; i < CVA->getNumOperands(); ++i)
- if (cast<ConstantSInt>(CVA->getOperand(i))->getValue() < 0)
- return false;
-
- return true;
-}
-
-// toOctal - Convert the low order bits of X into an octal letter
-static inline char toOctal(int X) {
- return (X&7)+'0';
-}
-
-// getAsCString - Return the specified array as a C compatible string, only if
-// the predicate isStringCompatible is true.
-//
-static string getAsCString(const ConstantArray *CVA) {
- assert(isStringCompatible(CVA) && "Array is not string compatible!");
-
- string Result;
- const Type *ETy = cast<ArrayType>(CVA->getType())->getElementType();
- Result = "\"";
- for (unsigned i = 0; i < CVA->getNumOperands(); ++i) {
- unsigned char C = (ETy == Type::SByteTy) ?
- (unsigned char)cast<ConstantSInt>(CVA->getOperand(i))->getValue() :
- (unsigned char)cast<ConstantUInt>(CVA->getOperand(i))->getValue();
-
- if (C == '"') {
- Result += "\\\"";
- } else if (C == '\\') {
- Result += "\\\\";
- } else if (isprint(C)) {
- Result += C;
- } else {
- switch(C) {
- case '\a': Result += "\\a"; break;
- case '\b': Result += "\\b"; break;
- case '\f': Result += "\\f"; break;
- case '\n': Result += "\\n"; break;
- case '\r': Result += "\\r"; break;
- case '\t': Result += "\\t"; break;
- case '\v': Result += "\\v"; break;
- default:
- Result += '\\';
- Result += toOctal(C >> 6);
- Result += toOctal(C >> 3);
- Result += toOctal(C >> 0);
- break;
- }
- }
- }
- Result += "\"";
-
- return Result;
-}
-
-inline bool
-ArrayTypeIsString(const ArrayType* arrayType)
-{
- return (arrayType->getElementType() == Type::UByteTy ||
- arrayType->getElementType() == Type::SByteTy);
-}
-
-
-inline const 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 type
-//
-inline unsigned int
-TypeToSize(const Type* type, const TargetMachine& target)
-{
- return target.findOptimalStorageSize(type);
-}
-
-// 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 TypeToSize(CV->getType(), target);
-}
-
-// 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(TypeToSize(type, target), 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);
-}
-
-
-// Print a single constant value.
-void
-SparcModuleAsmPrinter::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 (CV->getType()->isPrimitiveType())
- {
- 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 {
- WriteAsOperand(toAsm, CV, false, false) << "\n";
- }
- }
- else 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.
- 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
- {
- assert(0 && "Unknown elementary type for constant");
- }
-}
-
-void
-SparcModuleAsmPrinter::PrintZeroBytesToPad(int numBytes)
-{
- for ( ; numBytes >= 8; numBytes -= 8)
- printSingleConstantValue(Constant::getNullValue(Type::ULongTy));
-
- if (numBytes >= 4)
- {
- printSingleConstantValue(Constant::getNullValue(Type::UIntTy));
- numBytes -= 4;
- }
-
- while (numBytes--)
- printSingleConstantValue(Constant::getNullValue(Type::UByteTy));
-}
-
-// Print a constant value or values (it may be an aggregate).
-// Uses printSingleConstantValue() to print each individual value.
-void
-SparcModuleAsmPrinter::printConstantValueOnly(const Constant* CV,
- int numPadBytesAfter /* = 0*/)
-{
- const ConstantArray *CVA = dyn_cast<ConstantArray>(CV);
-
- if (CVA && isStringCompatible(CVA))
- { // print the string alone and return
- toAsm << "\t" << ".ascii" << "\t" << getAsCString(CVA) << "\n";
- }
- else if (CVA)
- { // 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
- printSingleConstantValue(CV);
-
- if (numPadBytesAfter)
- PrintZeroBytesToPad(numPadBytesAfter);
-}
-
-// Print a constant (which may be an aggregate) prefixed by all the
-// appropriate directives. Uses printConstantValueOnly() to print the
-// value or values.
-void
-SparcModuleAsmPrinter::printConstant(const Constant* CV, 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.
- const ConstantArray *CVA = dyn_cast<ConstantArray>(CV);
- if (CVA && isStringCompatible(CVA))
- { // 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);
-}
-
-
-void SparcModuleAsmPrinter::FoldConstants(const Module &M,
- hash_set<const Constant*> &MC) {
- for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I)
- if (!I->isExternal()) {
- const hash_set<const Constant*> &pool =
- MachineFunction::get(I).getInfo()->getConstantPoolValues();
- MC.insert(pool.begin(), pool.end());
- }
-}
-
-void SparcModuleAsmPrinter::printGlobalVariable(const GlobalVariable* GV)
-{
+void SparcV9AsmPrinter::printGlobalVariable(const GlobalVariable* GV) {
if (GV->hasExternalLinkage())
- toAsm << "\t.global\t" << getID(GV) << "\n";
+ O << "\t.global\t" << getID(GV) << "\n";
- if (GV->hasInitializer() && ! GV->getInitializer()->isNullValue())
+ 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) << ","
- << TypeToSize(GV->getType()->getElementType(), Target)
- << "\n";
+ } else {
+ const Type *ValTy = GV->getType()->getElementType();
+ emitAlignment(TM.getTargetData().getTypeAlignmentShift(ValTy));
+ O << "\t.type\t" << getID(GV) << ",#object\n";
+ O << "\t.reserve\t" << getID(GV) << ","
+ << TM.getTargetData().getTypeSize(GV->getType()->getElementType())
+ << "\n";
}
}
-
-void SparcModuleAsmPrinter::emitGlobalsAndConstants(const Module &M) {
- // First, get the constants there were marked by the code generator for
- // inclusion in the assembly code data area and fold them all into a
- // single constant pool since there may be lots of duplicates. Also,
- // lets force these constants into the slot table so that we can get
- // unique names for unnamed constants also.
- //
- hash_set<const Constant*> moduleConstants;
- FoldConstants(M, moduleConstants);
-
- // Output constants spilled to memory
- enterSection(AsmPrinter::ReadOnlyData);
- for (hash_set<const Constant*>::const_iterator I = moduleConstants.begin(),
- E = moduleConstants.end(); I != E; ++I)
- printConstant(*I);
-
+void SparcV9AsmPrinter::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
+ enterSection(ReadOnlyData); // read-only, initialized data
else if (GI->getInitializer()->isNullValue())
- enterSection(AsmPrinter::ZeroInitRWData); // read-write zero data
+ enterSection(ZeroInitRWData); // read-write zero data
else
- enterSection(AsmPrinter::InitRWData); // read-write non-zero data
+ enterSection(InitRWData); // read-write non-zero data
printGlobalVariable(GI);
}
- toAsm << "\n";
+ O << "\n";
}
-} // End anonymous namespace
-
-Pass *UltraSparc::getModuleAsmPrinterPass(std::ostream &Out) {
- return new SparcModuleAsmPrinter(Out, *this);
+FunctionPass *llvm::createAsmPrinterPass(std::ostream &Out, TargetMachine &TM) {
+ return new SparcV9AsmPrinter(Out, TM);
}
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