#include "llvm/Module.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Streams.h"
#include <cerrno>
using namespace llvm;
+static cl::opt<bool>
+AsmVerbose("asm-verbose", cl::Hidden, cl::desc("Add comments to directives."));
+
+char AsmPrinter::ID = 0;
AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm,
const TargetAsmInfo *T)
-: FunctionNumber(0), O(o), TM(tm), TAI(T)
+ : MachineFunctionPass((intptr_t)&ID), FunctionNumber(0), O(o), TM(tm), TAI(T)
{}
std::string AsmPrinter::getSectionForFunction(const Function &F) const {
SwitchToDataSection(""); // Reset back to no section.
- if (MachineDebugInfo *DebugInfo = getAnalysisToUpdate<MachineDebugInfo>()) {
- DebugInfo->AnalyzeModule(M);
+ if (MachineModuleInfo *MMI = getAnalysisToUpdate<MachineModuleInfo>()) {
+ MMI->AnalyzeModule(M);
}
return false;
bool AsmPrinter::doFinalization(Module &M) {
if (TAI->getWeakRefDirective()) {
- if (ExtWeakSymbols.begin() != ExtWeakSymbols.end())
+ if (!ExtWeakSymbols.empty())
SwitchToDataSection("");
for (std::set<const GlobalValue*>::iterator i = ExtWeakSymbols.begin(),
}
}
+ if (TAI->getSetDirective()) {
+ if (!M.alias_empty())
+ SwitchToTextSection(TAI->getTextSection());
+
+ O << "\n";
+ for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
+ I!=E; ++I) {
+ std::string Name = Mang->getValueName(I);
+ std::string Target;
+
+ if (const GlobalValue *GV = I->getAliasedGlobal())
+ Target = Mang->getValueName(GV);
+ else
+ assert(0 && "Unsupported aliasee");
+
+ if (I->hasExternalLinkage())
+ O << "\t.globl\t" << Name << "\n";
+ else if (I->hasWeakLinkage())
+ O << TAI->getWeakRefDirective() << Name << "\n";
+ else if (!I->hasInternalLinkage())
+ assert(0 && "Invalid alias linkage");
+
+ O << TAI->getSetDirective() << Name << ", " << Target << "\n";
+ }
+ }
+
delete Mang; Mang = 0;
return false;
}
if (EmittedSets.insert(JTBBs[ii]).second)
printSetLabel(i, JTBBs[ii]);
+ // On some targets (e.g. darwin) we want to emit two consequtive labels
+ // before each jump table. The first label is never referenced, but tells
+ // the assembler and linker the extents of the jump table object. The
+ // second label is actually referenced by the code.
+ if (const char *JTLabelPrefix = TAI->getJumpTableSpecialLabelPrefix())
+ O << JTLabelPrefix << "JTI" << getFunctionNumber() << '_' << i << ":\n";
+
O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << i << ":\n";
<< '_' << i << "_set_" << JTBBs[ii]->getNumber();
} else if (IsPic) {
printBasicBlockLabel(JTBBs[ii], false, false);
- //If the arch uses custom Jump Table directives, don't calc relative to JT
+ // If the arch uses custom Jump Table directives, don't calc relative to
+ // JT
if (!HadJTEntryDirective)
O << '-' << TAI->getPrivateGlobalPrefix() << "JTI"
<< getFunctionNumber() << '_' << i;
return LinkName;
}
+/// EmitExternalGlobal - Emit the external reference to a global variable.
+/// Should be overridden if an indirect reference should be used.
+void AsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
+ O << getGlobalLinkName(GV);
+}
+
+
+
+//===----------------------------------------------------------------------===//
+/// LEB 128 number encoding.
+
+/// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
+/// representing an unsigned leb128 value.
+void AsmPrinter::PrintULEB128(unsigned Value) const {
+ do {
+ unsigned Byte = Value & 0x7f;
+ Value >>= 7;
+ if (Value) Byte |= 0x80;
+ O << "0x" << std::hex << Byte << std::dec;
+ if (Value) O << ", ";
+ } while (Value);
+}
+
+/// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
+/// value.
+unsigned AsmPrinter::SizeULEB128(unsigned Value) {
+ unsigned Size = 0;
+ do {
+ Value >>= 7;
+ Size += sizeof(int8_t);
+ } while (Value);
+ return Size;
+}
+
+/// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
+/// representing a signed leb128 value.
+void AsmPrinter::PrintSLEB128(int Value) const {
+ int Sign = Value >> (8 * sizeof(Value) - 1);
+ bool IsMore;
+
+ do {
+ unsigned Byte = Value & 0x7f;
+ Value >>= 7;
+ IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
+ if (IsMore) Byte |= 0x80;
+ O << "0x" << std::hex << Byte << std::dec;
+ if (IsMore) O << ", ";
+ } while (IsMore);
+}
+
+/// SizeSLEB128 - Compute the number of bytes required for a signed leb128
+/// value.
+unsigned AsmPrinter::SizeSLEB128(int Value) {
+ unsigned Size = 0;
+ int Sign = Value >> (8 * sizeof(Value) - 1);
+ bool IsMore;
+
+ do {
+ unsigned Byte = Value & 0x7f;
+ Value >>= 7;
+ IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
+ Size += sizeof(int8_t);
+ } while (IsMore);
+ return Size;
+}
+
+//===--------------------------------------------------------------------===//
+// Emission and print routines
+//
+
+/// PrintHex - Print a value as a hexidecimal value.
+///
+void AsmPrinter::PrintHex(int Value) const {
+ O << "0x" << std::hex << Value << std::dec;
+}
+
+/// EOL - Print a newline character to asm stream. If a comment is present
+/// then it will be printed first. Comments should not contain '\n'.
+void AsmPrinter::EOL() const {
+ O << "\n";
+}
+void AsmPrinter::EOL(const std::string &Comment) const {
+ if (AsmVerbose && !Comment.empty()) {
+ O << "\t"
+ << TAI->getCommentString()
+ << " "
+ << Comment;
+ }
+ O << "\n";
+}
+
+/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
+/// unsigned leb128 value.
+void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {
+ if (TAI->hasLEB128()) {
+ O << "\t.uleb128\t"
+ << Value;
+ } else {
+ O << TAI->getData8bitsDirective();
+ PrintULEB128(Value);
+ }
+}
+
+/// EmitSLEB128Bytes - print an assembler byte data directive to compose a
+/// signed leb128 value.
+void AsmPrinter::EmitSLEB128Bytes(int Value) const {
+ if (TAI->hasLEB128()) {
+ O << "\t.sleb128\t"
+ << Value;
+ } else {
+ O << TAI->getData8bitsDirective();
+ PrintSLEB128(Value);
+ }
+}
+
+/// EmitInt8 - Emit a byte directive and value.
+///
+void AsmPrinter::EmitInt8(int Value) const {
+ O << TAI->getData8bitsDirective();
+ PrintHex(Value & 0xFF);
+}
+
+/// EmitInt16 - Emit a short directive and value.
+///
+void AsmPrinter::EmitInt16(int Value) const {
+ O << TAI->getData16bitsDirective();
+ PrintHex(Value & 0xFFFF);
+}
+
+/// EmitInt32 - Emit a long directive and value.
+///
+void AsmPrinter::EmitInt32(int Value) const {
+ O << TAI->getData32bitsDirective();
+ PrintHex(Value);
+}
+
+/// EmitInt64 - Emit a long long directive and value.
+///
+void AsmPrinter::EmitInt64(uint64_t Value) const {
+ if (TAI->getData64bitsDirective()) {
+ O << TAI->getData64bitsDirective();
+ PrintHex(Value);
+ } else {
+ if (TM.getTargetData()->isBigEndian()) {
+ EmitInt32(unsigned(Value >> 32)); O << "\n";
+ EmitInt32(unsigned(Value));
+ } else {
+ EmitInt32(unsigned(Value)); O << "\n";
+ EmitInt32(unsigned(Value >> 32));
+ }
+ }
+}
+
+/// toOctal - Convert the low order bits of X into an octal digit.
+///
+static inline char toOctal(int X) {
+ return (X&7)+'0';
+}
+
+/// printStringChar - Print a char, escaped if necessary.
+///
+static void printStringChar(std::ostream &O, unsigned char C) {
+ if (C == '"') {
+ O << "\\\"";
+ } else if (C == '\\') {
+ O << "\\\\";
+ } else if (isprint(C)) {
+ O << C;
+ } else {
+ switch(C) {
+ case '\b': O << "\\b"; break;
+ case '\f': O << "\\f"; break;
+ case '\n': O << "\\n"; break;
+ case '\r': O << "\\r"; break;
+ case '\t': O << "\\t"; break;
+ default:
+ O << '\\';
+ O << toOctal(C >> 6);
+ O << toOctal(C >> 3);
+ O << toOctal(C >> 0);
+ break;
+ }
+ }
+}
+
+/// EmitString - Emit a string with quotes and a null terminator.
+/// Special characters are emitted properly.
+/// \literal (Eg. '\t') \endliteral
+void AsmPrinter::EmitString(const std::string &String) const {
+ const char* AscizDirective = TAI->getAscizDirective();
+ if (AscizDirective)
+ O << AscizDirective;
+ else
+ O << TAI->getAsciiDirective();
+ O << "\"";
+ for (unsigned i = 0, N = String.size(); i < N; ++i) {
+ unsigned char C = String[i];
+ printStringChar(O, C);
+ }
+ if (AscizDirective)
+ O << "\"";
+ else
+ O << "\\0\"";
+}
+
+
+//===----------------------------------------------------------------------===//
+
// 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 {
if (GV && GV->getAlignment())
- NumBits = Log2_32(GV->getAlignment());
+ NumBits = std::max(NumBits, Log2_32(GV->getAlignment()));
if (NumBits == 0) return; // No need to emit alignment.
if (TAI->getAlignmentIsInBytes()) NumBits = 1 << NumBits;
O << TAI->getAlignDirective() << NumBits << "\n";
}
+
/// EmitZeros - Emit a block of zeros.
///
void AsmPrinter::EmitZeros(uint64_t NumZeros) const {
if (CV->isNullValue() || isa<UndefValue>(CV))
O << "0";
else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- if (CI->getType() == Type::Int1Ty) {
- assert(CI->getZExtValue());
- O << "1";
- } else O << CI->getSExtValue();
+ O << CI->getZExtValue();
} else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
// This is a constant address for a global variable or function. Use the
// name of the variable or function as the address value, possibly
}
} else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
const TargetData *TD = TM.getTargetData();
- switch(CE->getOpcode()) {
+ unsigned Opcode = CE->getOpcode();
+ switch (Opcode) {
case Instruction::GetElementPtr: {
// generate a symbolic expression for the byte address
const Constant *ptrVal = CE->getOperand(0);
- std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
- if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), idxVec)) {
+ SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
+ if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
+ idxVec.size())) {
if (Offset)
O << "(";
EmitConstantValueOnly(ptrVal);
// 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->isIntegral() &&
- Ty->getPrimitiveSize() >= TD->getTypeSize(Op->getType()))
+ if (Ty->isInteger() &&
+ TD->getTypeSize(Ty) >= TD->getTypeSize(Op->getType()))
return EmitConstantValueOnly(Op);
assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
break;
}
case Instruction::Add:
+ case Instruction::Sub:
O << "(";
EmitConstantValueOnly(CE->getOperand(0));
- O << ") + (";
+ O << (Opcode==Instruction::Add ? ") + (" : ") - (");
EmitConstantValueOnly(CE->getOperand(1));
O << ")";
break;
}
}
-/// toOctal - Convert the low order bits of X into an octal digit.
-///
-static inline char toOctal(int X) {
- return (X&7)+'0';
-}
-
/// printAsCString - Print the specified array as a C compatible string, only if
/// the predicate isString is true.
///
for (unsigned i = 0; i != LastElt; ++i) {
unsigned char C =
(unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getZExtValue();
-
- if (C == '"') {
- O << "\\\"";
- } else if (C == '\\') {
- O << "\\\\";
- } else if (isprint(C)) {
- O << C;
- } else {
- switch(C) {
- case '\b': O << "\\b"; break;
- case '\f': O << "\\f"; break;
- case '\n': O << "\\n"; break;
- case '\r': O << "\\r"; break;
- case '\t': O << "\\t"; break;
- default:
- O << '\\';
- O << toOctal(C >> 6);
- O << toOctal(C >> 3);
- O << toOctal(C >> 0);
- break;
- }
- }
+ printStringChar(O, C);
}
O << "\"";
}
// 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->StructSize
- : cvsLayout->MemberOffsets[i+1])
- - cvsLayout->MemberOffsets[i]) - fieldSize;
+ uint64_t padSize = ((i == e-1? cvsLayout->getSizeInBytes()
+ : cvsLayout->getElementOffset(i+1))
+ - cvsLayout->getElementOffset(i)) - fieldSize;
sizeSoFar += fieldSize + padSize;
// Now print the actual field value
// Insert the field padding unless it's zero bytes...
EmitZeros(padSize);
}
- assert(sizeSoFar == cvsLayout->StructSize &&
+ assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
"Layout of constant struct may be incorrect!");
return;
} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
}
return;
}
- } else if (const ConstantPacked *CP = dyn_cast<ConstantPacked>(CV)) {
- const PackedType *PTy = CP->getType();
+ } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
+ const VectorType *PTy = CP->getType();
for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
EmitGlobalConstant(CP->getOperand(I));
} else if (!strcmp(Code, "uid")) {
// Assign a unique ID to this machine instruction.
static const MachineInstr *LastMI = 0;
+ static const Function *F = 0;
static unsigned Counter = 0U-1;
+
+ // Comparing the address of MI isn't sufficient, because machineinstrs may
+ // be allocated to the same address across functions.
+ const Function *ThisF = MI->getParent()->getParent()->getFunction();
+
// If this is a new machine instruction, bump the counter.
- if (LastMI != MI) { ++Counter; LastMI = MI; }
+ if (LastMI != MI || F != ThisF) {
+ ++Counter;
+ LastMI = MI;
+ F = ThisF;
+ }
O << Counter;
} else {
cerr << "Unknown special formatter '" << Code
O << TAI->getInlineAsmStart() << "\n\t";
- // The variant of the current asmprinter: FIXME: change.
- int AsmPrinterVariant = 0;
-
+ // The variant of the current asmprinter.
+ int AsmPrinterVariant = TAI->getAssemblerDialect();
+
int CurVariant = -1; // The number of the {.|.|.} region we are in.
const char *LastEmitted = AsmStr; // One past the last character emitted.
}
case '\n':
++LastEmitted; // Consume newline character.
- O << "\n\t"; // Indent code with newline.
+ O << "\n"; // Indent code with newline.
break;
case '$': {
++LastEmitted; // Consume '$' character.
const char *IDStart = LastEmitted;
char *IDEnd;
+ errno = 0;
long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
cerr << "Bad $ operand number in inline asm string: '"
O << "\n\t" << TAI->getInlineAsmEnd() << "\n";
}
+/// printLabel - This method prints a local label used by debug and
+/// exception handling tables.
+void AsmPrinter::printLabel(const MachineInstr *MI) const {
+ O << "\n"
+ << TAI->getPrivateGlobalPrefix()
+ << "label"
+ << MI->getOperand(0).getImmedValue()
+ << ":\n";
+}
+
/// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
/// instruction, using the specified assembler variant. Targets should
/// overried this to format as appropriate.
void AsmPrinter::printDataDirective(const Type *type) {
const TargetData *TD = TM.getTargetData();
switch (type->getTypeID()) {
- case Type::Int1TyID:
- case Type::Int8TyID:
- O << TAI->getData8bitsDirective();
- break;
- case Type::Int16TyID:
- O << TAI->getData16bitsDirective();
+ case Type::IntegerTyID: {
+ unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
+ if (BitWidth <= 8)
+ O << TAI->getData8bitsDirective();
+ else if (BitWidth <= 16)
+ O << TAI->getData16bitsDirective();
+ else if (BitWidth <= 32)
+ O << TAI->getData32bitsDirective();
+ else if (BitWidth <= 64) {
+ assert(TAI->getData64bitsDirective() &&
+ "Target cannot handle 64-bit constant exprs!");
+ O << TAI->getData64bitsDirective();
+ }
break;
+ }
case Type::PointerTyID:
if (TD->getPointerSize() == 8) {
assert(TAI->getData64bitsDirective() &&
"Target cannot handle 64-bit pointer exprs!");
O << TAI->getData64bitsDirective();
- break;
+ } else {
+ O << TAI->getData32bitsDirective();
}
- //Fall through for pointer size == int size
- case Type::Int32TyID:
- O << TAI->getData32bitsDirective();
- break;
- case Type::Int64TyID:
- assert(TAI->getData64bitsDirective() &&
- "Target cannot handle 64-bit constant exprs!");
- O << TAI->getData64bitsDirective();
break;
case Type::FloatTyID: case Type::DoubleTyID:
assert (0 && "Should have already output floating point constant.");
break;
}
}
+
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