-//===-- EmitAssembly.cpp - Emit SparcV9 Specific .s File ---------------------==//
+//===-- SparcV9AsmPrinter.cpp - Emit SparcV9 Specific .s File --------------==//
//
// The LLVM Compiler Infrastructure
//
#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 "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Statistic.h"
#include "SparcV9Internals.h"
+#include "MachineFunctionInfo.h"
#include <string>
using namespace llvm;
arrayType->getElementType() == Type::SByteTy);
}
+ unsigned findOptimalStorageSize(const TargetMachine &TM, const Type *Ty) {
+ // All integer types smaller than ints promote to 4 byte integers.
+ if (Ty->isIntegral() && Ty->getPrimitiveSize() < 4)
+ return 4;
+
+ return TM.getTargetData().getTypeSize(Ty);
+ }
+
+
inline const std::string
TypeToDataDirective(const Type* type) {
- switch(type->getPrimitiveID())
- {
+ switch(type->getTypeID()) {
case Type::BoolTyID: case Type::UByteTyID: case Type::SByteTyID:
return ".byte";
case Type::UShortTyID: case Type::ShortTyID:
return 1 + CVA->getNumOperands();
}
- return target.findOptimalStorageSize(CV->getType());
+ return findOptimalStorageSize(target, CV->getType());
}
/// Align data larger than one L1 cache line on L1 cache line boundaries.
///
inline unsigned int
TypeToAlignment(const Type* type, const TargetMachine& target) {
- return SizeToAlignment(target.findOptimalStorageSize(type), target);
+ return SizeToAlignment(findOptimalStorageSize(target, type), target);
}
/// Get the size of the constant and then use SizeToAlignment.
} // End anonymous namespace
-
-
-//===---------------------------------------------------------------------===//
-// Code abstracted away from the AsmPrinter
-//===---------------------------------------------------------------------===//
-
namespace {
+ enum Sections {
+ Unknown,
+ Text,
+ ReadOnlyData,
+ InitRWData,
+ ZeroInitRWData,
+ };
+
class AsmPrinter {
// Mangle symbol names appropriately
Mangler *Mang;
public:
- std::ostream &toAsm;
- const TargetMachine &Target;
-
- enum Sections {
- Unknown,
- Text,
- ReadOnlyData,
- InitRWData,
- ZeroInitRWData,
- } CurSection;
+ std::ostream &O;
+ const TargetMachine &TM;
+
+ enum Sections CurSection;
AsmPrinter(std::ostream &os, const TargetMachine &T)
- : /* idTable(0), */ toAsm(os), Target(T), CurSection(Unknown) {}
+ : /* idTable(0), */ O(os), TM(T), CurSection(Unknown) {}
~AsmPrinter() {
delete Mang;
if (valID.length() == 0)
valID = getID(CV);
- toAsm << "\t.align\t" << ConstantToAlignment(CV, Target) << "\n";
+ O << "\t.align\t" << ConstantToAlignment(CV, TM) << "\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";
+ O << valID << ":\n";
+ O << "\t" << ".ascii" << "\t" << getAsCString(CVA) << "\n";
return;
}
- toAsm << "\t.type" << "\t" << valID << ",#object\n";
+ O << "\t.type" << "\t" << valID << ",#object\n";
- unsigned int constSize = ConstantToSize(CV, Target);
+ unsigned int constSize = ConstantToSize(CV, TM);
if (constSize)
- toAsm << "\t.size" << "\t" << valID << "," << constSize << "\n";
+ O << "\t.size" << "\t" << valID << "," << constSize << "\n";
- toAsm << valID << ":\n";
+ O << valID << ":\n";
printConstantValueOnly(CV);
}
if (S == CurSection) return; // Only switch section if necessary
CurSection = S;
- toAsm << "\n\t.section ";
+ 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";
}
// getID Wrappers - Ensure consistent usage
///
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";
+ O << "\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)) {
+ if (const GlobalValue* GV = dyn_cast<GlobalValue>(CV)) {
+ O << getID(GV) << "\n";
+ } else if (isa<ConstantPointerNull>(CV) || isa<UndefValue>(CV)) {
// Null pointer value
- toAsm << "0\n";
+ O << "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";
+ O << ConstantExprToString(CE, TM) << "\n";
} else if (CV->getType()->isPrimitiveType()) {
// Check primitive types last
- if (CV->getType()->isFloatingPoint()) {
+ if (isa<UndefValue>(CV)) {
+ O << "0\n";
+ } else 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;
+ O << *(unsigned int*)ProxyPtr;
} else if (CV->getType() == Type::DoubleTy) {
char *ProxyPtr = (char*)&Val; // Abide by C TBAA rules
- toAsm << *(uint64_t*)ProxyPtr;
+ O << *(uint64_t*)ProxyPtr;
} else {
assert(0 && "Unknown floating point type!");
}
- toAsm << "\t! " << CV->getType()->getDescription()
+ O << "\t! " << CV->getType()->getDescription()
<< " value: " << Val << "\n";
} else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
- toAsm << (int)CB->getValue() << "\n";
+ O << (int)CB->getValue() << "\n";
} else {
- WriteAsOperand(toAsm, CV, false, false) << "\n";
+ WriteAsOperand(O, CV, false, false) << "\n";
}
} else {
assert(0 && "Unknown elementary type for constant");
if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
if (CVA->isString()) {
// print the string alone and return
- toAsm << "\t" << ".ascii" << "\t" << getAsCString(CVA) << "\n";
+ O << "\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()));
+ for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
+ printConstantValueOnly(CVA->getOperand(i));
}
} 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();
+ TM.getTargetData().getStructLayout(CVS->getType());
unsigned sizeSoFar = 0;
- for (unsigned i=0, N = constValues.size(); i < N; i++) {
- const Constant* field = cast<Constant>(constValues[i].get());
+ for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
+ const Constant* field = CVS->getOperand(i);
// 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
+ TM.getTargetData().getTypeSize(field->getType());
+ int padSize = ((i == e-1? cvsLayout->StructSize
: cvsLayout->MemberOffsets[i+1])
- cvsLayout->MemberOffsets[i]) - fieldSize;
sizeSoFar += (fieldSize + padSize);
}
assert(sizeSoFar == cvsLayout->StructSize &&
"Layout of constant struct may be incorrect!");
- } else if (isa<ConstantAggregateZero>(CV)) {
- PrintZeroBytesToPad(Target.getTargetData().getTypeSize(CV->getType()));
+ } else if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV)) {
+ PrintZeroBytesToPad(TM.getTargetData().getTypeSize(CV->getType()));
} else
printSingleConstantValue(CV);
const TargetMachine& target) {
std::string S;
bool failed = false;
- if (const Constant* CV = dyn_cast<Constant>(V)) { // symbolic or known
+ if (const GlobalValue* GV = dyn_cast<GlobalValue>(V)) {
+ S += getID(GV);
+ } else 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 += utostr(CI->getValue());
else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
S += ftostr(CFP->getValue());
- else if (isa<ConstantPointerNull>(CV))
+ else if (isa<ConstantPointerNull>(CV) || isa<UndefValue>(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;
return S;
}
-
-//===----------------------------------------------------------------------===//
-// SparcV9AsmPrinter Code
-//===----------------------------------------------------------------------===//
-
namespace {
struct SparcV9AsmPrinter : public FunctionPass, public AsmPrinter {
inline bool
SparcV9AsmPrinter::OpIsMemoryAddressBase(const MachineInstr *MI,
unsigned int opNum) {
- if (Target.getInstrInfo().isLoad(MI->getOpcode()))
+ 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, opCode) \
- printOneOperand(mop1, opCode); \
- toAsm << "+"; \
- printOneOperand(mop2, opCode);
-
unsigned int
-SparcV9AsmPrinter::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), MI->getOpcode());
+ printOneOperand(mop, MI->getOpcode());
+ O << "+";
+ printOneOperand(MI->getOperand(opNum+1), MI->getOpcode());
return 2;
} else if (OpIsMemoryAddressBase(MI, opNum)) {
- toAsm << "[";
- PrintOp1PlusOp2(mop, MI->getOperand(opNum+1), MI->getOpcode());
- toAsm << "]";
+ O << "[";
+ printOneOperand(mop, MI->getOpcode());
+ O << "+";
+ printOneOperand(MI->getOperand(opNum+1), MI->getOpcode());
+ O << "]";
return 2;
} else {
printOneOperand(mop, MI->getOpcode());
void
SparcV9AsmPrinter::printOneOperand(const MachineOperand &mop,
- MachineOpCode opCode)
+ MachineOpCode opCode)
{
bool needBitsFlag = true;
if (mop.isHiBits32())
- toAsm << "%lm(";
+ O << "%lm(";
else if (mop.isLoBits32())
- toAsm << "%lo(";
+ O << "%lo(";
else if (mop.isHiBits64())
- toAsm << "%hh(";
+ O << "%hh(";
else if (mop.isLoBits64())
- toAsm << "%hm(";
+ O << "%hm(";
else
needBitsFlag = false;
{
int regNum = (int)mop.getReg();
- if (regNum == Target.getRegInfo().getInvalidRegNum()) {
+ if (regNum == TM.getRegInfo()->getInvalidRegNum()) {
// better to print code with NULL registers than to die
- toAsm << "<NULL VALUE>";
+ O << "<NULL VALUE>";
} else {
- toAsm << "%" << Target.getRegInfo().getUnifiedRegName(regNum);
+ O << "%" << TM.getRegInfo()->getUnifiedRegName(regNum);
}
break;
}
case MachineOperand::MO_ConstantPoolIndex:
{
- toAsm << ".CPI_" << currFunction->getName()
+ O << ".CPI_" << getID(currFunction)
<< "_" << mop.getConstantPoolIndex();
break;
}
assert(Val && "\tNULL Value in SparcV9AsmPrinter");
if (const BasicBlock *BB = dyn_cast<BasicBlock>(Val))
- toAsm << getID(BB);
- else if (const Function *M = dyn_cast<Function>(Val))
- toAsm << getID(M);
+ 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 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();
- 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 outputting
+ if (NeedComma) O << ", "; // Handle comma outputting
NeedComma = true;
N = printOperands(MI, OpNum);
} else
N = 1;
- toAsm << "\n";
+ O << "\n";
++EmittedInsts;
}
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"; // Separate BB's with newlines
+ O << "\n"; // Separate BB's with newlines
}
void SparcV9AsmPrinter::emitFunction(const Function &F) {
- std::string methName = getID(&F);
- toAsm << "!****** Outputing Function: " << methName << " ******\n";
+ std::string CurrentFnName = getID(&F);
+ MachineFunction &MF = MachineFunction::get(&F);
+ O << "!****** Outputing Function: " << CurrentFnName << " ******\n";
// Emit constant pool for this function
- const MachineConstantPool *MCP = MachineFunction::get(&F).getConstantPool();
+ const MachineConstantPool *MCP = MF.getConstantPool();
const std::vector<Constant*> &CP = MCP->getConstants();
- enterSection(AsmPrinter::ReadOnlyData);
+ enterSection(ReadOnlyData);
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
- std::string cpiName = ".CPI_" + F.getName() + "_" + utostr(i);
+ std::string cpiName = ".CPI_" + CurrentFnName + "_" + 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";
+ 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";
}
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() ||
+ isa<UndefValue>(GV->getInitializer()))) {
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";
+ O << "\t.align\t" << TypeToAlignment(GV->getType()->getElementType(),
+ TM) << "\n";
+ O << "\t.type\t" << getID(GV) << ",#object\n";
+ O << "\t.reserve\t" << getID(GV) << ","
+ << findOptimalStorageSize(TM, GV->getType()->getElementType())
+ << "\n";
}
}
void SparcV9AsmPrinter::emitGlobals(const Module &M) {
// Output global variables...
- for (Module::const_giterator GI = M.gbegin(), GE = M.gend(); GI != GE; ++GI)
+ for (Module::const_global_iterator GI = M.global_begin(), GE = M.global_end(); 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
+ enterSection(ReadOnlyData); // read-only, initialized data
+ else if (GI->getInitializer()->isNullValue() ||
+ isa<UndefValue>(GI->getInitializer()))
+ 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";
}
-FunctionPass *llvm::createAsmPrinterPass(std::ostream &Out,
- const TargetMachine &TM) {
+FunctionPass *llvm::createAsmPrinterPass(std::ostream &Out, TargetMachine &TM) {
return new SparcV9AsmPrinter(Out, TM);
}
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