static cl::opt<bool>
AsmVerbose("asm-verbose", cl::Hidden, cl::desc("Add comments to directives."));
-const int AsmPrinter::ID = 0;
+char AsmPrinter::ID = 0;
AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm,
const TargetAsmInfo *T)
: MachineFunctionPass((intptr_t)&ID), FunctionNumber(0), O(o), TM(tm), TAI(T)
I!=E; ++I) {
std::string Name = Mang->getValueName(I);
std::string Target;
+
+ const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
+ Target = Mang->getValueName(GV);
- if (const GlobalValue *GV = I->getAliasedGlobal())
- Target = Mang->getValueName(GV);
- else
- assert(0 && "Unsupported aliasee");
-
- if (I->hasExternalLinkage())
+ if (I->hasExternalLinkage() || !TAI->getWeakRefDirective())
O << "\t.globl\t" << Name << "\n";
else if (I->hasWeakLinkage())
O << TAI->getWeakRefDirective() << Name << "\n";
assert(0 && "Invalid alias linkage");
O << TAI->getSetDirective() << Name << ", " << Target << "\n";
+
+ // If the aliasee has external weak linkage it can be referenced only by
+ // alias itself. In this case it can be not in ExtWeakSymbols list. Emit
+ // weak reference in such case.
+ if (GV->hasExternalWeakLinkage())
+ if (TAI->getWeakRefDirective())
+ O << TAI->getWeakRefDirective() << Target << "\n";
+ else
+ O << "\t.globl\t" << Target << "\n";
}
}
return false;
}
+std::string AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) {
+ assert(MF && "No machine function?");
+ return Mang->makeNameProper(MF->getFunction()->getName() + ".eh",
+ TAI->getGlobalPrefix());
+}
+
void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
// What's my mangled name?
CurrentFnName = Mang->getValueName(MF.getFunction());
MachineConstantPoolEntry CPE = CP[i];
const Type *Ty = CPE.getType();
if (TAI->getFourByteConstantSection() &&
- TM.getTargetData()->getTypeSize(Ty) == 4)
+ TM.getTargetData()->getABITypeSize(Ty) == 4)
FourByteCPs.push_back(std::make_pair(CPE, i));
else if (TAI->getEightByteConstantSection() &&
- TM.getTargetData()->getTypeSize(Ty) == 8)
+ TM.getTargetData()->getABITypeSize(Ty) == 8)
EightByteCPs.push_back(std::make_pair(CPE, i));
else if (TAI->getSixteenByteConstantSection() &&
- TM.getTargetData()->getTypeSize(Ty) == 16)
+ TM.getTargetData()->getABITypeSize(Ty) == 16)
SixteenByteCPs.push_back(std::make_pair(CPE, i));
else
OtherCPs.push_back(std::make_pair(CPE, i));
if (i != e-1) {
const Type *Ty = CP[i].first.getType();
unsigned EntSize =
- TM.getTargetData()->getTypeSize(Ty);
+ TM.getTargetData()->getABITypeSize(Ty);
unsigned ValEnd = CP[i].first.getOffset() + EntSize;
// Emit inter-object padding for alignment.
EmitZeros(CP[i+1].first.getOffset()-ValEnd);
/// special global used by LLVM. If so, emit it and return true, otherwise
/// do nothing and return false.
bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
+ if (GV->getName() == "llvm.used") {
+ if (TAI->getUsedDirective() != 0) // No need to emit this at all.
+ EmitLLVMUsedList(GV->getInitializer());
+ return true;
+ }
+
// Ignore debug and non-emitted data.
if (GV->getSection() == "llvm.metadata") return true;
assert(GV->hasInitializer() && "Not a special LLVM global!");
- if (GV->getName() == "llvm.used") {
- if (TAI->getUsedDirective() != 0) // No need to emit this at all.
- EmitLLVMUsedList(GV->getInitializer());
- return true;
- }
-
+ const TargetData *TD = TM.getTargetData();
+ unsigned Align = Log2_32(TD->getPointerPrefAlignment());
if (GV->getName() == "llvm.global_ctors" && GV->use_empty()) {
SwitchToDataSection(TAI->getStaticCtorsSection());
- EmitAlignment(2, 0);
+ EmitAlignment(Align, 0);
EmitXXStructorList(GV->getInitializer());
return true;
}
if (GV->getName() == "llvm.global_dtors" && GV->use_empty()) {
SwitchToDataSection(TAI->getStaticDtorsSection());
- EmitAlignment(2, 0);
+ EmitAlignment(Align, 0);
EmitXXStructorList(GV->getInitializer());
return true;
}
}
+/// EmitFile - Emit a .file directive.
+void AsmPrinter::EmitFile(unsigned Number, const std::string &Name) const {
+ O << "\t.file\t" << Number << " \"";
+ for (unsigned i = 0, N = Name.size(); i < N; ++i) {
+ unsigned char C = Name[i];
+ printStringChar(O, C);
+ }
+ O << "\"";
+}
+
+
//===----------------------------------------------------------------------===//
-// EmitAlignment - Emit an alignment directive to the specified power of two.
-// Use the maximum of the specified alignment and the alignment from the
-// specified GlobalValue (if any).
-void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV) const {
+// EmitAlignment - Emit an alignment directive to the specified power of
+// two boundary. For example, if you pass in 3 here, you will get an 8
+// byte alignment. If a global value is specified, and if that global has
+// an explicit alignment requested, it will unconditionally override the
+// alignment request. However, if ForcedAlignBits is specified, this value
+// has final say: the ultimate alignment will be the max of ForcedAlignBits
+// and the alignment computed with NumBits and the global.
+//
+// The algorithm is:
+// Align = NumBits;
+// if (GV && GV->hasalignment) Align = GV->getalignment();
+// Align = std::max(Align, ForcedAlignBits);
+//
+void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV,
+ unsigned ForcedAlignBits, bool UseFillExpr,
+ unsigned FillValue) const {
if (GV && GV->getAlignment())
- NumBits = std::max(NumBits, Log2_32(GV->getAlignment()));
+ NumBits = Log2_32(GV->getAlignment());
+ NumBits = std::max(NumBits, ForcedAlignBits);
+
if (NumBits == 0) return; // No need to emit alignment.
if (TAI->getAlignmentIsInBytes()) NumBits = 1 << NumBits;
- O << TAI->getAlignDirective() << NumBits << "\n";
+ O << TAI->getAlignDirective() << NumBits;
+ if (UseFillExpr) O << ",0x" << std::hex << FillValue << std::dec;
+ O << "\n";
}
// We can emit the pointer value into this slot if the slot is an
// integer slot greater or equal to the size of the pointer.
if (Ty->isInteger() &&
- TD->getTypeSize(Ty) >= TD->getTypeSize(Op->getType()))
+ TD->getABITypeSize(Ty) >= TD->getABITypeSize(Op->getType()))
return EmitConstantValueOnly(Op);
assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
}
/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
-///
-void AsmPrinter::EmitGlobalConstant(const Constant *CV) {
+/// If Packed is false, pad to the ABI size.
+void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
const TargetData *TD = TM.getTargetData();
+ unsigned Size = Packed ?
+ TD->getTypeStoreSize(CV->getType()) : TD->getABITypeSize(CV->getType());
if (CV->isNullValue() || isa<UndefValue>(CV)) {
- EmitZeros(TD->getTypeSize(CV->getType()));
+ EmitZeros(Size);
return;
} else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
if (CVA->isString()) {
EmitString(CVA);
} else { // Not a string. Print the values in successive locations
for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
- EmitGlobalConstant(CVA->getOperand(i));
+ EmitGlobalConstant(CVA->getOperand(i), false);
}
return;
} else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
const Constant* field = CVS->getOperand(i);
// Check if padding is needed and insert one or more 0s.
- uint64_t fieldSize = TD->getTypeSize(field->getType());
- uint64_t padSize = ((i == e-1? cvsLayout->getSizeInBytes()
- : cvsLayout->getElementOffset(i+1))
+ uint64_t fieldSize = TD->getTypeStoreSize(field->getType());
+ uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
- cvsLayout->getElementOffset(i)) - fieldSize;
sizeSoFar += fieldSize + padSize;
- // Now print the actual field value
- EmitGlobalConstant(field);
+ // Now print the actual field value without ABI size padding.
+ EmitGlobalConstant(field, true);
- // Insert the field padding unless it's zero bytes...
+ // Insert padding - this may include padding to increase the size of the
+ // current field up to the ABI size (if the struct is not packed) as well
+ // as padding to ensure that the next field starts at the right offset.
EmitZeros(padSize);
}
assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
// FP Constants are printed as integer constants to avoid losing
// precision...
- double Val = CFP->getValue();
if (CFP->getType() == Type::DoubleTy) {
+ double Val = CFP->getValueAPF().convertToDouble(); // for comment only
+ uint64_t i = CFP->getValueAPF().convertToAPInt().getZExtValue();
if (TAI->getData64bitsDirective())
- O << TAI->getData64bitsDirective() << DoubleToBits(Val) << "\t"
+ O << TAI->getData64bitsDirective() << i << "\t"
<< TAI->getCommentString() << " double value: " << Val << "\n";
else if (TD->isBigEndian()) {
- O << TAI->getData32bitsDirective() << unsigned(DoubleToBits(Val) >> 32)
+ O << TAI->getData32bitsDirective() << unsigned(i >> 32)
<< "\t" << TAI->getCommentString()
<< " double most significant word " << Val << "\n";
- O << TAI->getData32bitsDirective() << unsigned(DoubleToBits(Val))
+ O << TAI->getData32bitsDirective() << unsigned(i)
<< "\t" << TAI->getCommentString()
<< " double least significant word " << Val << "\n";
} else {
- O << TAI->getData32bitsDirective() << unsigned(DoubleToBits(Val))
+ O << TAI->getData32bitsDirective() << unsigned(i)
<< "\t" << TAI->getCommentString()
<< " double least significant word " << Val << "\n";
- O << TAI->getData32bitsDirective() << unsigned(DoubleToBits(Val) >> 32)
+ O << TAI->getData32bitsDirective() << unsigned(i >> 32)
<< "\t" << TAI->getCommentString()
<< " double most significant word " << Val << "\n";
}
return;
- } else {
- O << TAI->getData32bitsDirective() << FloatToBits(Val)
+ } else if (CFP->getType() == Type::FloatTy) {
+ float Val = CFP->getValueAPF().convertToFloat(); // for comment only
+ O << TAI->getData32bitsDirective()
+ << CFP->getValueAPF().convertToAPInt().getZExtValue()
<< "\t" << TAI->getCommentString() << " float " << Val << "\n";
return;
- }
+ } else if (CFP->getType() == Type::X86_FP80Ty) {
+ // all long double variants are printed as hex
+ // api needed to prevent premature destruction
+ APInt api = CFP->getValueAPF().convertToAPInt();
+ const uint64_t *p = api.getRawData();
+ if (TD->isBigEndian()) {
+ O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
+ << "\t" << TAI->getCommentString()
+ << " long double most significant halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
+ << "\t" << TAI->getCommentString()
+ << " long double next halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
+ << "\t" << TAI->getCommentString()
+ << " long double next halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0])
+ << "\t" << TAI->getCommentString()
+ << " long double next halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[1])
+ << "\t" << TAI->getCommentString()
+ << " long double least significant halfword\n";
+ } else {
+ O << TAI->getData16bitsDirective() << uint16_t(p[1])
+ << "\t" << TAI->getCommentString()
+ << " long double least significant halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0])
+ << "\t" << TAI->getCommentString()
+ << " long double next halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
+ << "\t" << TAI->getCommentString()
+ << " long double next halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
+ << "\t" << TAI->getCommentString()
+ << " long double next halfword\n";
+ O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
+ << "\t" << TAI->getCommentString()
+ << " long double most significant halfword\n";
+ }
+ EmitZeros(Size - TD->getTypeStoreSize(Type::X86_FP80Ty));
+ return;
+ } else if (CFP->getType() == Type::PPC_FP128Ty) {
+ // all long double variants are printed as hex
+ // api needed to prevent premature destruction
+ APInt api = CFP->getValueAPF().convertToAPInt();
+ const uint64_t *p = api.getRawData();
+ if (TD->isBigEndian()) {
+ O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
+ << "\t" << TAI->getCommentString()
+ << " long double most significant word\n";
+ O << TAI->getData32bitsDirective() << uint32_t(p[0])
+ << "\t" << TAI->getCommentString()
+ << " long double next word\n";
+ O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
+ << "\t" << TAI->getCommentString()
+ << " long double next word\n";
+ O << TAI->getData32bitsDirective() << uint32_t(p[1])
+ << "\t" << TAI->getCommentString()
+ << " long double least significant word\n";
+ } else {
+ O << TAI->getData32bitsDirective() << uint32_t(p[1])
+ << "\t" << TAI->getCommentString()
+ << " long double least significant word\n";
+ O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
+ << "\t" << TAI->getCommentString()
+ << " long double next word\n";
+ O << TAI->getData32bitsDirective() << uint32_t(p[0])
+ << "\t" << TAI->getCommentString()
+ << " long double next word\n";
+ O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
+ << "\t" << TAI->getCommentString()
+ << " long double most significant word\n";
+ }
+ return;
+ } else assert(0 && "Floating point constant type not handled");
} else if (CV->getType() == Type::Int64Ty) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
uint64_t Val = CI->getZExtValue();
const VectorType *PTy = CP->getType();
for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
- EmitGlobalConstant(CP->getOperand(I));
+ EmitGlobalConstant(CP->getOperand(I), false);
return;
}
// Count the number of register definitions.
unsigned NumDefs = 0;
- for (; MI->getOperand(NumDefs).isReg() && MI->getOperand(NumDefs).isDef();
+ for (; MI->getOperand(NumDefs).isRegister() && MI->getOperand(NumDefs).isDef();
++NumDefs)
assert(NumDefs != NumOperands-1 && "No asm string?");
unsigned OpFlags = MI->getOperand(OpNo).getImmedValue();
++OpNo; // Skip over the ID number.
- AsmPrinter *AP = const_cast<AsmPrinter*>(this);
- if ((OpFlags & 7) == 4 /*ADDR MODE*/) {
- Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
- Modifier[0] ? Modifier : 0);
- } else {
- Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
- Modifier[0] ? Modifier : 0);
+ if (Modifier[0]=='l') // labels are target independent
+ printBasicBlockLabel(MI->getOperand(OpNo).getMachineBasicBlock(),
+ false, false);
+ else {
+ AsmPrinter *AP = const_cast<AsmPrinter*>(this);
+ if ((OpFlags & 7) == 4 /*ADDR MODE*/) {
+ Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
+ Modifier[0] ? Modifier : 0);
+ } else {
+ Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
+ Modifier[0] ? Modifier : 0);
+ }
}
}
if (Error) {
void AsmPrinter::printBasicBlockLabel(const MachineBasicBlock *MBB,
bool printColon,
bool printComment) const {
- O << TAI->getPrivateGlobalPrefix() << "BB" << FunctionNumber << "_"
+ O << TAI->getPrivateGlobalPrefix() << "BB" << getFunctionNumber() << "_"
<< MBB->getNumber();
if (printColon)
O << ':';
if (printComment && MBB->getBasicBlock())
- O << '\t' << TAI->getCommentString() << MBB->getBasicBlock()->getName();
+ O << '\t' << TAI->getCommentString() << ' '
+ << MBB->getBasicBlock()->getName();
}
/// printSetLabel - This method prints a set label for the specified
}
break;
case Type::FloatTyID: case Type::DoubleTyID:
+ case Type::X86_FP80TyID: case Type::FP128TyID: case Type::PPC_FP128TyID:
assert (0 && "Should have already output floating point constant.");
default:
assert (0 && "Can't handle printing this type of thing");
projects / oota-llvm.git / blobdiff