#include "llvm/DerivedTypes.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
+#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/CodeGen/GCMetadataPrinter.h"
#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCInst.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/Mangler.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringExtras.h"
#include <cerrno>
using namespace llvm;
AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
cl::init(cl::BOU_UNSET));
+static bool getVerboseAsm(bool VDef) {
+ switch (AsmVerbose) {
+ default:
+ case cl::BOU_UNSET: return VDef;
+ case cl::BOU_TRUE: return true;
+ case cl::BOU_FALSE: return false;
+ }
+}
+
char AsmPrinter::ID = 0;
AsmPrinter::AsmPrinter(formatted_raw_ostream &o, TargetMachine &tm,
const MCAsmInfo *T, bool VDef)
OutContext(*new MCContext()),
// FIXME: Pass instprinter to streamer.
- OutStreamer(*createAsmStreamer(OutContext, O, *T, 0)),
+ OutStreamer(*createAsmStreamer(OutContext, O, *T,
+ TM.getTargetData()->isLittleEndian(),
+ getVerboseAsm(VDef), 0)),
- LastMI(0), LastFn(0), Counter(~0U),
- PrevDLT(0, ~0U, ~0U) {
+ LastMI(0), LastFn(0), Counter(~0U), PrevDLT(NULL) {
DW = 0; MMI = 0;
- switch (AsmVerbose) {
- case cl::BOU_UNSET: VerboseAsm = VDef; break;
- case cl::BOU_TRUE: VerboseAsm = true; break;
- case cl::BOU_FALSE: VerboseAsm = false; break;
- }
+ VerboseAsm = getVerboseAsm(VDef);
}
AsmPrinter::~AsmPrinter() {
const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
.Initialize(OutContext, TM);
- Mang = new Mangler(M, MAI->getGlobalPrefix(), MAI->getPrivateGlobalPrefix(),
- MAI->getLinkerPrivateGlobalPrefix());
-
- if (MAI->doesAllowQuotesInName())
- Mang->setUseQuotes(true);
+ Mang = new Mangler(*MAI);
- GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
- assert(MI && "AsmPrinter didn't require GCModuleInfo?");
+ // Allow the target to emit any magic that it wants at the start of the file.
+ EmitStartOfAsmFile(M);
if (MAI->hasSingleParameterDotFile()) {
/* Very minimal debug info. It is ignored if we emit actual
- debug info. If we don't, this at helps the user find where
+ debug info. If we don't, this at least helps the user find where
a function came from. */
O << "\t.file\t\"" << M.getModuleIdentifier() << "\"\n";
}
+ GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
+ assert(MI && "AsmPrinter didn't require GCModuleInfo?");
for (GCModuleInfo::iterator I = MI->begin(), E = MI->end(); I != E; ++I)
if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I))
MP->beginAssembly(O, *this, *MAI);
<< '\n' << MAI->getCommentString()
<< " End of file scope inline assembly\n";
- if (MAI->doesSupportDebugInformation() ||
- MAI->doesSupportExceptionHandling()) {
- MMI = getAnalysisIfAvailable<MachineModuleInfo>();
- if (MMI)
- MMI->AnalyzeModule(M);
- DW = getAnalysisIfAvailable<DwarfWriter>();
- if (DW)
- DW->BeginModule(&M, MMI, O, this, MAI);
- }
+ MMI = getAnalysisIfAvailable<MachineModuleInfo>();
+ if (MMI)
+ MMI->AnalyzeModule(M);
+ DW = getAnalysisIfAvailable<DwarfWriter>();
+ if (DW)
+ DW->BeginModule(&M, MMI, O, this, MAI);
return false;
}
+/// EmitGlobalVariable - Emit the specified global variable to the .s file.
+void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
+ if (!GV->hasInitializer()) // External globals require no code.
+ return;
+
+ // Check to see if this is a special global used by LLVM, if so, emit it.
+ if (EmitSpecialLLVMGlobal(GV))
+ return;
+
+ MCSymbol *GVSym = GetGlobalValueSymbol(GV);
+ printVisibility(GVSym, GV->getVisibility());
+
+ if (MAI->hasDotTypeDotSizeDirective()) {
+ O << "\t.type\t" << *GVSym;
+ if (MAI->getCommentString()[0] != '@')
+ O << ",@object\n";
+ else
+ O << ",%object\n";
+ }
+
+ SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM);
+
+ const TargetData *TD = TM.getTargetData();
+ unsigned Size = TD->getTypeAllocSize(GV->getType()->getElementType());
+ unsigned AlignLog = TD->getPreferredAlignmentLog(GV);
+
+ // Handle common and BSS local symbols (.lcomm).
+ if (GVKind.isCommon() || GVKind.isBSSLocal()) {
+ if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
+
+ if (VerboseAsm) {
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GV, /*PrintType=*/false, GV->getParent());
+ O << '\n';
+ }
+
+ // Handle common symbols.
+ if (GVKind.isCommon()) {
+ // .comm _foo, 42, 4
+ OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
+ return;
+ }
+
+ // Handle local BSS symbols.
+ if (MAI->hasMachoZeroFillDirective()) {
+ const MCSection *TheSection =
+ getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM);
+ // .zerofill __DATA, __bss, _foo, 400, 5
+ OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog);
+ return;
+ }
+
+ if (const char *LComm = MAI->getLCOMMDirective()) {
+ // .lcomm _foo, 42
+ O << LComm << *GVSym << ',' << Size;
+ O << '\n';
+ return;
+ }
+
+ // .local _foo
+ O << "\t.local\t" << *GVSym << '\n';
+ // .comm _foo, 42, 4
+ OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
+ return;
+ }
+
+ const MCSection *TheSection =
+ getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM);
+
+ // Handle the zerofill directive on darwin, which is a special form of BSS
+ // emission.
+ if (GVKind.isBSSExtern() && MAI->hasMachoZeroFillDirective()) {
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
+ // .zerofill __DATA, __common, _foo, 400, 5
+ OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog);
+ return;
+ }
+
+ OutStreamer.SwitchSection(TheSection);
+
+ // TODO: Factor into an 'emit linkage' thing that is shared with function
+ // bodies.
+ switch (GV->getLinkage()) {
+ case GlobalValue::CommonLinkage:
+ case GlobalValue::LinkOnceAnyLinkage:
+ case GlobalValue::LinkOnceODRLinkage:
+ case GlobalValue::WeakAnyLinkage:
+ case GlobalValue::WeakODRLinkage:
+ case GlobalValue::LinkerPrivateLinkage:
+ if (MAI->getWeakDefDirective() != 0) {
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
+ // .weak_definition _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::WeakDefinition);
+ } else if (const char *LinkOnce = MAI->getLinkOnceDirective()) {
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
+ // .linkonce same_size
+ O << LinkOnce;
+ } else {
+ // .weak _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Weak);
+ }
+ break;
+ case GlobalValue::DLLExportLinkage:
+ case GlobalValue::AppendingLinkage:
+ // FIXME: appending linkage variables should go into a section of
+ // their name or something. For now, just emit them as external.
+ case GlobalValue::ExternalLinkage:
+ // If external or appending, declare as a global symbol.
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
+ break;
+ case GlobalValue::PrivateLinkage:
+ case GlobalValue::InternalLinkage:
+ break;
+ default:
+ llvm_unreachable("Unknown linkage type!");
+ }
+
+ EmitAlignment(AlignLog, GV);
+ if (VerboseAsm) {
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GV, /*PrintType=*/false, GV->getParent());
+ O << '\n';
+ }
+ OutStreamer.EmitLabel(GVSym);
+
+ EmitGlobalConstant(GV->getInitializer());
+
+ if (MAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << *GVSym << ", " << Size << '\n';
+}
+
+
bool AsmPrinter::doFinalization(Module &M) {
// Emit global variables.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
- PrintGlobalVariable(I);
+ EmitGlobalVariable(I);
// Emit final debug information.
if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
- if (I->hasExternalWeakLinkage())
- O << MAI->getWeakRefDirective() << Mang->getMangledName(I) << '\n';
+ if (!I->hasExternalWeakLinkage()) continue;
+ O << MAI->getWeakRefDirective() << *GetGlobalValueSymbol(I) << '\n';
}
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
- if (I->hasExternalWeakLinkage())
- O << MAI->getWeakRefDirective() << Mang->getMangledName(I) << '\n';
+ if (!I->hasExternalWeakLinkage()) continue;
+ O << MAI->getWeakRefDirective() << *GetGlobalValueSymbol(I) << '\n';
}
}
O << '\n';
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
I != E; ++I) {
- std::string Name = Mang->getMangledName(I);
+ MCSymbol *Name = GetGlobalValueSymbol(I);
const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
- std::string Target = Mang->getMangledName(GV);
+ MCSymbol *Target = GetGlobalValueSymbol(GV);
if (I->hasExternalLinkage() || !MAI->getWeakRefDirective())
- O << "\t.globl\t" << Name << '\n';
+ O << "\t.globl\t" << *Name << '\n';
else if (I->hasWeakLinkage())
- O << MAI->getWeakRefDirective() << Name << '\n';
- else if (!I->hasLocalLinkage())
- llvm_unreachable("Invalid alias linkage");
+ O << MAI->getWeakRefDirective() << *Name << '\n';
+ else
+ assert(I->hasLocalLinkage() && "Invalid alias linkage");
printVisibility(Name, I->getVisibility());
- O << MAI->getSetDirective() << ' ' << Name << ", " << Target << '\n';
+ O << MAI->getSetDirective() << ' ' << *Name << ", " << *Target << '\n';
}
}
if (MAI->getNonexecutableStackDirective())
O << MAI->getNonexecutableStackDirective() << '\n';
+
+ // Allow the target to emit any magic that it wants at the end of the file,
+ // after everything else has gone out.
+ EmitEndOfAsmFile(M);
+
delete Mang; Mang = 0;
DW = 0; MMI = 0;
return false;
}
-std::string
-AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) const {
- assert(MF && "No machine function?");
- return Mang->getMangledName(MF->getFunction(), ".eh",
- MAI->is_EHSymbolPrivate());
-}
-
void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
- // What's my mangled name?
- CurrentFnName = Mang->getMangledName(MF.getFunction());
+ // Get the function symbol.
+ CurrentFnSym = GetGlobalValueSymbol(MF.getFunction());
IncrementFunctionNumber();
- if (VerboseAsm) {
+ if (VerboseAsm)
LI = &getAnalysis<MachineLoopInfo>();
- }
}
namespace {
const MCSection *S;
unsigned Alignment;
SmallVector<unsigned, 4> CPEs;
- SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {};
+ SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {}
};
}
// Emit inter-object padding for alignment.
unsigned AlignMask = CPE.getAlignment() - 1;
unsigned NewOffset = (Offset + AlignMask) & ~AlignMask;
- EmitZeros(NewOffset - Offset);
+ OutStreamer.EmitFill(NewOffset - Offset, 0/*fillval*/, 0/*addrspace*/);
const Type *Ty = CPE.getType();
Offset = NewOffset + TM.getTargetData()->getTypeAllocSize(Ty);
// If we're emitting non-PIC code, then emit the entries as direct
// references to the target basic blocks.
if (!isPIC) {
- GetMBBSymbol(MBB->getNumber())->print(O, MAI);
+ O << *GetMBBSymbol(MBB->getNumber());
} else if (MAI->getSetDirective()) {
O << MAI->getPrivateGlobalPrefix() << getFunctionNumber()
<< '_' << uid << "_set_" << MBB->getNumber();
} else {
- GetMBBSymbol(MBB->getNumber())->print(O, MAI);
+ O << *GetMBBSymbol(MBB->getNumber());
// If the arch uses custom Jump Table directives, don't calc relative to
// JT
if (!HadJTEntryDirective)
OutStreamer.SwitchSection(getObjFileLowering().getStaticCtorSection());
EmitAlignment(Align, 0);
EmitXXStructorList(GV->getInitializer());
+
+ if (TM.getRelocationModel() == Reloc::Static &&
+ MAI->hasStaticCtorDtorReferenceInStaticMode())
+ O << ".reference .constructors_used\n";
return true;
}
OutStreamer.SwitchSection(getObjFileLowering().getStaticDtorSection());
EmitAlignment(Align, 0);
EmitXXStructorList(GV->getInitializer());
+
+ if (TM.getRelocationModel() == Reloc::Static &&
+ MAI->hasStaticCtorDtorReferenceInStaticMode())
+ O << ".reference .destructors_used\n";
return true;
}
}
}
-/// getGlobalLinkName - Returns the asm/link name of of the specified
-/// global variable. Should be overridden by each target asm printer to
-/// generate the appropriate value.
-const std::string &AsmPrinter::getGlobalLinkName(const GlobalVariable *GV,
- std::string &LinkName) const {
- if (isa<Function>(GV)) {
- LinkName += MAI->getFunctionAddrPrefix();
- LinkName += Mang->getMangledName(GV);
- LinkName += MAI->getFunctionAddrSuffix();
- } else {
- LinkName += MAI->getGlobalVarAddrPrefix();
- LinkName += Mang->getMangledName(GV);
- LinkName += MAI->getGlobalVarAddrSuffix();
- }
-
- 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) {
- std::string GLN;
- O << getGlobalLinkName(GV, GLN);
-}
-
-
//===----------------------------------------------------------------------===//
/// LEB 128 number encoding.
-/// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
+/// PrintULEB128 - Print a series of hexadecimal values (separated by commas)
/// representing an unsigned leb128 value.
void AsmPrinter::PrintULEB128(unsigned Value) const {
- char Buffer[20];
do {
unsigned char Byte = static_cast<unsigned char>(Value & 0x7f);
Value >>= 7;
if (Value) Byte |= 0x80;
- O << "0x" << utohex_buffer(Byte, Buffer+20);
+ PrintHex(Byte);
if (Value) O << ", ";
} while (Value);
}
-/// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
+/// PrintSLEB128 - Print a series of hexadecimal values (separated by commas)
/// representing a signed leb128 value.
void AsmPrinter::PrintSLEB128(int Value) const {
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
- char Buffer[20];
do {
unsigned char Byte = static_cast<unsigned char>(Value & 0x7f);
Value >>= 7;
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
if (IsMore) Byte |= 0x80;
- O << "0x" << utohex_buffer(Byte, Buffer+20);
+ PrintHex(Byte);
if (IsMore) O << ", ";
} while (IsMore);
}
// Emission and print routines
//
-/// PrintHex - Print a value as a hexidecimal value.
+/// PrintHex - Print a value as a hexadecimal value.
///
-void AsmPrinter::PrintHex(int Value) const {
- char Buffer[20];
- O << "0x" << utohex_buffer(static_cast<unsigned>(Value), Buffer+20);
+void AsmPrinter::PrintHex(uint64_t Value) const {
+ O << "0x";
+ O.write_hex(Value);
}
/// EOL - Print a newline character to asm stream. If a comment is present
O << '\n';
}
-void AsmPrinter::EOL(const std::string &Comment) const {
- if (VerboseAsm && !Comment.empty()) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << ' '
- << Comment;
- }
- O << '\n';
-}
-
-void AsmPrinter::EOL(const char* Comment) const {
- if (VerboseAsm && *Comment) {
+void AsmPrinter::EOL(const Twine &Comment) const {
+ if (VerboseAsm && !Comment.isTriviallyEmpty()) {
O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << ' '
- << Comment;
+ O << MAI->getCommentString() << ' ' << Comment;
}
O << '\n';
}
return 0;
}
-void AsmPrinter::EOL(const char *Comment, unsigned Encoding) const {
- if (VerboseAsm && *Comment) {
+void AsmPrinter::EOL(const Twine &Comment, unsigned Encoding) const {
+ if (VerboseAsm && !Comment.isTriviallyEmpty()) {
O.PadToColumn(MAI->getCommentColumn());
O << MAI->getCommentString()
<< ' '
/// EmitInt8 - Emit a byte directive and value.
///
void AsmPrinter::EmitInt8(int Value) const {
- O << MAI->getData8bitsDirective();
- PrintHex(Value & 0xFF);
+ OutStreamer.EmitIntValue(Value, 1, 0/*addrspace*/);
}
/// EmitInt16 - Emit a short directive and value.
///
void AsmPrinter::EmitInt16(int Value) const {
- O << MAI->getData16bitsDirective();
- PrintHex(Value & 0xFFFF);
+ OutStreamer.EmitIntValue(Value, 2, 0/*addrspace*/);
}
/// EmitInt32 - Emit a long directive and value.
///
void AsmPrinter::EmitInt32(int Value) const {
- O << MAI->getData32bitsDirective();
- PrintHex(Value);
+ OutStreamer.EmitIntValue(Value, 4, 0/*addrspace*/);
}
/// EmitInt64 - Emit a long long directive and value.
///
void AsmPrinter::EmitInt64(uint64_t Value) const {
- if (MAI->getData64bitsDirective()) {
- O << MAI->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));
- }
- }
+ OutStreamer.EmitIntValue(Value, 8, 0/*addrspace*/);
}
/// toOctal - Convert the low order bits of X into an octal digit.
/// 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 {
- EmitString(String.c_str(), String.size());
+void AsmPrinter::EmitString(const StringRef String) const {
+ EmitString(String.data(), String.size());
}
void AsmPrinter::EmitString(const char *String, unsigned Size) const {
/// EmitFile - Emit a .file directive.
-void AsmPrinter::EmitFile(unsigned Number, const std::string &Name) const {
+void AsmPrinter::EmitFile(unsigned Number, StringRef Name) const {
O << "\t.file\t" << Number << " \"";
for (unsigned i = 0, N = Name.size(); i < N; ++i)
printStringChar(O, Name[i]);
OutStreamer.EmitValueToAlignment(1 << NumBits, FillValue, 1, 0);
}
-/// EmitZeros - Emit a block of zeros.
-///
-void AsmPrinter::EmitZeros(uint64_t NumZeros, unsigned AddrSpace) const {
- if (NumZeros) {
- if (MAI->getZeroDirective()) {
- O << MAI->getZeroDirective() << NumZeros;
- if (MAI->getZeroDirectiveSuffix())
- O << MAI->getZeroDirectiveSuffix();
- O << '\n';
- } else {
- for (; NumZeros; --NumZeros)
- O << MAI->getData8bitsDirective(AddrSpace) << "0\n";
- }
- }
-}
-
// Print out the specified constant, without a storage class. Only the
// constants valid in constant expressions can occur here.
void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
- if (CV->isNullValue() || isa<UndefValue>(CV))
+ if (CV->isNullValue() || isa<UndefValue>(CV)) {
O << '0';
- else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+ return;
+ }
+
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
O << CI->getZExtValue();
- } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
+ return;
+ }
+
+ 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
- // decorating it with GlobalVarAddrPrefix/Suffix or
- // FunctionAddrPrefix/Suffix (these all default to "" )
- if (isa<Function>(GV)) {
- O << MAI->getFunctionAddrPrefix()
- << Mang->getMangledName(GV)
- << MAI->getFunctionAddrSuffix();
- } else {
- O << MAI->getGlobalVarAddrPrefix()
- << Mang->getMangledName(GV)
- << MAI->getGlobalVarAddrSuffix();
- }
- } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
+ // name of the variable or function as the address value.
+ O << *GetGlobalValueSymbol(GV);
+ return;
+ }
+
+ if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV)) {
+ O << *GetBlockAddressSymbol(BA);
+ return;
+ }
+
+ const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV);
+ if (CE == 0) {
+ llvm_unreachable("Unknown constant value!");
+ O << '0';
+ return;
+ }
+
+ switch (CE->getOpcode()) {
+ case Instruction::ZExt:
+ case Instruction::SExt:
+ case Instruction::FPTrunc:
+ case Instruction::FPExt:
+ case Instruction::UIToFP:
+ case Instruction::SIToFP:
+ case Instruction::FPToUI:
+ case Instruction::FPToSI:
+ default:
+ llvm_unreachable("FIXME: Don't support this constant cast expr");
+ case Instruction::GetElementPtr: {
+ // generate a symbolic expression for the byte address
const TargetData *TD = TM.getTargetData();
- unsigned Opcode = CE->getOpcode();
- switch (Opcode) {
- case Instruction::Trunc:
- case Instruction::ZExt:
- case Instruction::SExt:
- case Instruction::FPTrunc:
- case Instruction::FPExt:
- case Instruction::UIToFP:
- case Instruction::SIToFP:
- case Instruction::FPToUI:
- case Instruction::FPToSI:
- llvm_unreachable("FIXME: Don't support this constant cast expr");
- case Instruction::GetElementPtr: {
- // generate a symbolic expression for the byte address
- const Constant *ptrVal = CE->getOperand(0);
- SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
- if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
- idxVec.size())) {
- // Truncate/sext the offset to the pointer size.
- if (TD->getPointerSizeInBits() != 64) {
- int SExtAmount = 64-TD->getPointerSizeInBits();
- Offset = (Offset << SExtAmount) >> SExtAmount;
- }
-
- if (Offset)
- O << '(';
- EmitConstantValueOnly(ptrVal);
- if (Offset > 0)
- O << ") + " << Offset;
- else if (Offset < 0)
- O << ") - " << -Offset;
- } else {
- EmitConstantValueOnly(ptrVal);
- }
- break;
+ const Constant *ptrVal = CE->getOperand(0);
+ SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
+ int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
+ idxVec.size());
+ if (Offset == 0)
+ return EmitConstantValueOnly(ptrVal);
+
+ // Truncate/sext the offset to the pointer size.
+ if (TD->getPointerSizeInBits() != 64) {
+ int SExtAmount = 64-TD->getPointerSizeInBits();
+ Offset = (Offset << SExtAmount) >> SExtAmount;
}
- case Instruction::BitCast:
- return EmitConstantValueOnly(CE->getOperand(0));
-
- case Instruction::IntToPtr: {
- // Handle casts to pointers by changing them into casts to the appropriate
- // integer type. This promotes constant folding and simplifies this code.
- Constant *Op = CE->getOperand(0);
- Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(CV->getContext()),
- false/*ZExt*/);
+
+ if (Offset)
+ O << '(';
+ EmitConstantValueOnly(ptrVal);
+ if (Offset > 0)
+ O << ") + " << Offset;
+ else
+ O << ") - " << -Offset;
+ return;
+ }
+ case Instruction::BitCast:
+ return EmitConstantValueOnly(CE->getOperand(0));
+
+ case Instruction::IntToPtr: {
+ // Handle casts to pointers by changing them into casts to the appropriate
+ // integer type. This promotes constant folding and simplifies this code.
+ const TargetData *TD = TM.getTargetData();
+ Constant *Op = CE->getOperand(0);
+ Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(CV->getContext()),
+ false/*ZExt*/);
+ return EmitConstantValueOnly(Op);
+ }
+
+ case Instruction::PtrToInt: {
+ // Support only foldable casts to/from pointers that can be eliminated by
+ // changing the pointer to the appropriately sized integer type.
+ Constant *Op = CE->getOperand(0);
+ const Type *Ty = CE->getType();
+ const TargetData *TD = TM.getTargetData();
+
+ // 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 (TD->getTypeAllocSize(Ty) == TD->getTypeAllocSize(Op->getType()))
return EmitConstantValueOnly(Op);
- }
-
+
+ O << "((";
+ EmitConstantValueOnly(Op);
+ APInt ptrMask =
+ APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Op->getType()));
+
+ SmallString<40> S;
+ ptrMask.toStringUnsigned(S);
+ O << ") & " << S.str() << ')';
+ return;
+ }
- case Instruction::PtrToInt: {
- // Support only foldable casts to/from pointers that can be eliminated by
- // changing the pointer to the appropriately sized integer type.
- Constant *Op = CE->getOperand(0);
- const Type *Ty = CE->getType();
-
- // 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 (TD->getTypeAllocSize(Ty) == TD->getTypeAllocSize(Op->getType()))
- return EmitConstantValueOnly(Op);
-
- O << "((";
- EmitConstantValueOnly(Op);
- APInt ptrMask =
- APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Op->getType()));
+ case Instruction::Trunc:
+ // We emit the value and depend on the assembler to truncate the generated
+ // expression properly. This is important for differences between
+ // blockaddress labels. Since the two labels are in the same function, it
+ // is reasonable to treat their delta as a 32-bit value.
+ return EmitConstantValueOnly(CE->getOperand(0));
- SmallString<40> S;
- ptrMask.toStringUnsigned(S);
- O << ") & " << S.str() << ')';
- break;
- }
+ case Instruction::Add:
+ case Instruction::Sub:
+ case Instruction::And:
+ case Instruction::Or:
+ case Instruction::Xor:
+ O << '(';
+ EmitConstantValueOnly(CE->getOperand(0));
+ O << ')';
+ switch (CE->getOpcode()) {
case Instruction::Add:
+ O << " + ";
+ break;
case Instruction::Sub:
+ O << " - ";
+ break;
case Instruction::And:
+ O << " & ";
+ break;
case Instruction::Or:
+ O << " | ";
+ break;
case Instruction::Xor:
- O << '(';
- EmitConstantValueOnly(CE->getOperand(0));
- O << ')';
- switch (Opcode) {
- case Instruction::Add:
- O << " + ";
- break;
- case Instruction::Sub:
- O << " - ";
- break;
- case Instruction::And:
- O << " & ";
- break;
- case Instruction::Or:
- O << " | ";
- break;
- case Instruction::Xor:
- O << " ^ ";
- break;
- default:
- break;
- }
- O << '(';
- EmitConstantValueOnly(CE->getOperand(1));
- O << ')';
- break;
+ O << " ^ ";
+ break;
default:
- llvm_unreachable("Unsupported operator!");
+ break;
}
- } else {
- llvm_unreachable("Unknown constant value!");
+ O << '(';
+ EmitConstantValueOnly(CE->getOperand(1));
+ O << ')';
+ break;
}
}
O << '\n';
}
-void AsmPrinter::EmitGlobalConstantArray(const ConstantArray *CVA,
- unsigned AddrSpace) {
- if (CVA->isString()) {
- EmitString(CVA);
+static void EmitGlobalConstantArray(const ConstantArray *CA, unsigned AddrSpace,
+ AsmPrinter &AP) {
+ if (AddrSpace == 0 && CA->isString()) {
+ AP.EmitString(CA);
} else { // Not a string. Print the values in successive locations
- for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
- EmitGlobalConstant(CVA->getOperand(i), AddrSpace);
+ for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
+ AP.EmitGlobalConstant(CA->getOperand(i), AddrSpace);
}
}
-void AsmPrinter::EmitGlobalConstantVector(const ConstantVector *CP) {
- const VectorType *PTy = CP->getType();
-
- for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
- EmitGlobalConstant(CP->getOperand(I));
+static void EmitGlobalConstantVector(const ConstantVector *CV,
+ unsigned AddrSpace, AsmPrinter &AP) {
+ for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i)
+ AP.EmitGlobalConstant(CV->getOperand(i), AddrSpace);
}
-void AsmPrinter::EmitGlobalConstantStruct(const ConstantStruct *CVS,
- unsigned AddrSpace) {
+static void EmitGlobalConstantStruct(const ConstantStruct *CS,
+ unsigned AddrSpace, AsmPrinter &AP) {
// Print the fields in successive locations. Pad to align if needed!
- const TargetData *TD = TM.getTargetData();
- unsigned Size = TD->getTypeAllocSize(CVS->getType());
- const StructLayout *cvsLayout = TD->getStructLayout(CVS->getType());
- uint64_t sizeSoFar = 0;
- for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
- const Constant* field = CVS->getOperand(i);
+ const TargetData *TD = AP.TM.getTargetData();
+ unsigned Size = TD->getTypeAllocSize(CS->getType());
+ const StructLayout *Layout = TD->getStructLayout(CS->getType());
+ uint64_t SizeSoFar = 0;
+ for (unsigned i = 0, e = CS->getNumOperands(); i != e; ++i) {
+ const Constant *Field = CS->getOperand(i);
// Check if padding is needed and insert one or more 0s.
- uint64_t fieldSize = TD->getTypeAllocSize(field->getType());
- uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
- - cvsLayout->getElementOffset(i)) - fieldSize;
- sizeSoFar += fieldSize + padSize;
+ uint64_t FieldSize = TD->getTypeAllocSize(Field->getType());
+ uint64_t PadSize = ((i == e-1 ? Size : Layout->getElementOffset(i+1))
+ - Layout->getElementOffset(i)) - FieldSize;
+ SizeSoFar += FieldSize + PadSize;
// Now print the actual field value.
- EmitGlobalConstant(field, AddrSpace);
+ AP.EmitGlobalConstant(Field, AddrSpace);
// 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, AddrSpace);
+ AP.OutStreamer.EmitZeros(PadSize, AddrSpace);
}
- assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
+ assert(SizeSoFar == Layout->getSizeInBytes() &&
"Layout of constant struct may be incorrect!");
}
-void AsmPrinter::EmitGlobalConstantFP(const ConstantFP *CFP,
- unsigned AddrSpace) {
+static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
+ AsmPrinter &AP) {
// FP Constants are printed as integer constants to avoid losing
- // precision...
- LLVMContext &Context = CFP->getContext();
- const TargetData *TD = TM.getTargetData();
- if (CFP->getType() == Type::getDoubleTy(Context)) {
- double Val = CFP->getValueAPF().convertToDouble(); // for comment only
- uint64_t i = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- if (MAI->getData64bitsDirective(AddrSpace)) {
- O << MAI->getData64bitsDirective(AddrSpace) << i;
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " double " << Val;
- }
- O << '\n';
- } else if (TD->isBigEndian()) {
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word of double " << Val;
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word of double " << Val;
- }
- O << '\n';
- } else {
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word of double " << Val;
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word of double " << Val;
- }
- O << '\n';
+ // precision.
+ if (CFP->getType()->isDoubleTy()) {
+ if (AP.VerboseAsm) {
+ double Val = CFP->getValueAPF().convertToDouble();
+ AP.OutStreamer.GetCommentOS() << "double " << Val << '\n';
}
+
+ uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
+ AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
return;
- } else if (CFP->getType() == Type::getFloatTy(Context)) {
- float Val = CFP->getValueAPF().convertToFloat(); // for comment only
- O << MAI->getData32bitsDirective(AddrSpace)
- << CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " float " << Val;
+ }
+
+ if (CFP->getType()->isFloatTy()) {
+ if (AP.VerboseAsm) {
+ float Val = CFP->getValueAPF().convertToFloat(); // for comment only
+ AP.O.PadToColumn(AP.MAI->getCommentColumn());
+ AP.O << AP.MAI->getCommentString() << " float " << Val << '\n';
}
- O << '\n';
+ uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
+ AP.OutStreamer.EmitIntValue(Val, 4, AddrSpace);
return;
- } else if (CFP->getType() == Type::getX86_FP80Ty(Context)) {
+ }
+
+ if (CFP->getType()->isX86_FP80Ty()) {
// all long double variants are printed as hex
// api needed to prevent premature destruction
- APInt api = CFP->getValueAPF().bitcastToAPInt();
- const uint64_t *p = api.getRawData();
- // Convert to double so we can print the approximate val as a comment.
- APFloat DoubleVal = CFP->getValueAPF();
- bool ignored;
- DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
- &ignored);
- if (TD->isBigEndian()) {
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant halfword of x86_fp80 ~"
- << DoubleVal.convertToDouble();
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 48);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 16);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant halfword";
- }
- O << '\n';
- } else {
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant halfword of x86_fp80 ~"
- << DoubleVal.convertToDouble();
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 16);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 48);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant halfword";
- }
- O << '\n';
+ APInt API = CFP->getValueAPF().bitcastToAPInt();
+ const uint64_t *p = API.getRawData();
+ if (AP.VerboseAsm) {
+ // Convert to double so we can print the approximate val as a comment.
+ APFloat DoubleVal = CFP->getValueAPF();
+ bool ignored;
+ DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
+ &ignored);
+ AP.O.PadToColumn(AP.MAI->getCommentColumn());
+ AP.O << AP.MAI->getCommentString() << " x86_fp80 ~= "
+ << DoubleVal.convertToDouble() << '\n';
}
- EmitZeros(TD->getTypeAllocSize(Type::getX86_FP80Ty(Context)) -
- TD->getTypeStoreSize(Type::getX86_FP80Ty(Context)), AddrSpace);
- return;
- } else if (CFP->getType() == Type::getPPC_FP128Ty(Context)) {
- // all long double variants are printed as hex
- // api needed to prevent premature destruction
- APInt api = CFP->getValueAPF().bitcastToAPInt();
- const uint64_t *p = api.getRawData();
- if (TD->isBigEndian()) {
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word of ppc_fp128";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word";
- }
- O << '\n';
- } else {
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word of ppc_fp128";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word";
- }
- O << '\n';
+
+ if (AP.TM.getTargetData()->isBigEndian()) {
+ AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
+ AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
+ } else {
+ AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
+ AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
}
+
+ // Emit the tail padding for the long double.
+ const TargetData &TD = *AP.TM.getTargetData();
+ AP.OutStreamer.EmitZeros(TD.getTypeAllocSize(CFP->getType()) -
+ TD.getTypeStoreSize(CFP->getType()), AddrSpace);
return;
- } else llvm_unreachable("Floating point constant type not handled");
+ }
+
+ assert(CFP->getType()->isPPC_FP128Ty() &&
+ "Floating point constant type not handled");
+ // All long double variants are printed as hex api needed to prevent
+ // premature destruction.
+ APInt API = CFP->getValueAPF().bitcastToAPInt();
+ const uint64_t *p = API.getRawData();
+ if (AP.TM.getTargetData()->isBigEndian()) {
+ AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
+ AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace);
+ } else {
+ AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace);
+ AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
+ }
}
-void AsmPrinter::EmitGlobalConstantLargeInt(const ConstantInt *CI,
- unsigned AddrSpace) {
- const TargetData *TD = TM.getTargetData();
+static void EmitGlobalConstantLargeInt(const ConstantInt *CI,
+ unsigned AddrSpace, AsmPrinter &AP) {
+ const TargetData *TD = AP.TM.getTargetData();
unsigned BitWidth = CI->getBitWidth();
- assert(isPowerOf2_32(BitWidth) &&
- "Non-power-of-2-sized integers not handled!");
+ assert((BitWidth & 63) == 0 && "only support multiples of 64-bits");
// We don't expect assemblers to support integer data directives
// for more than 64 bits, so we emit the data in at most 64-bit
// quantities at a time.
const uint64_t *RawData = CI->getValue().getRawData();
for (unsigned i = 0, e = BitWidth / 64; i != e; ++i) {
- uint64_t Val;
- if (TD->isBigEndian())
- Val = RawData[e - i - 1];
- else
- Val = RawData[i];
+ uint64_t Val = TD->isBigEndian() ? RawData[e - i - 1] : RawData[i];
+ AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
+ }
+}
- if (MAI->getData64bitsDirective(AddrSpace))
- O << MAI->getData64bitsDirective(AddrSpace) << Val << '\n';
- else if (TD->isBigEndian()) {
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant half of i64 " << Val;
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant half of i64 " << Val;
- }
- O << '\n';
- } else {
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant half of i64 " << Val;
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(Val >> 32);
+/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
+void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
+ if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV)) {
+ uint64_t Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+ return OutStreamer.EmitZeros(Size, AddrSpace);
+ }
+
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+ unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+ switch (Size) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
if (VerboseAsm) {
O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant half of i64 " << Val;
+ O << MAI->getCommentString() << " 0x";
+ O.write_hex(CI->getZExtValue());
+ O << '\n';
}
- O << '\n';
+ OutStreamer.EmitIntValue(CI->getZExtValue(), Size, AddrSpace);
+ return;
+ default:
+ EmitGlobalConstantLargeInt(CI, AddrSpace, *this);
+ return;
}
}
-}
+
+ if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV))
+ return EmitGlobalConstantArray(CVA, AddrSpace, *this);
+
+ if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV))
+ return EmitGlobalConstantStruct(CVS, AddrSpace, *this);
-/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
-void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
- const TargetData *TD = TM.getTargetData();
- const Type *type = CV->getType();
- unsigned Size = TD->getTypeAllocSize(type);
+ if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
+ return EmitGlobalConstantFP(CFP, AddrSpace, *this);
+
+ if (const ConstantVector *V = dyn_cast<ConstantVector>(CV))
+ return EmitGlobalConstantVector(V, AddrSpace, *this);
- if (CV->isNullValue() || isa<UndefValue>(CV)) {
- EmitZeros(Size, AddrSpace);
+ if (isa<ConstantPointerNull>(CV)) {
+ unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+ OutStreamer.EmitIntValue(0, Size, AddrSpace);
return;
- } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
- EmitGlobalConstantArray(CVA , AddrSpace);
- return;
- } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
- EmitGlobalConstantStruct(CVS, AddrSpace);
- return;
- } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
- EmitGlobalConstantFP(CFP, AddrSpace);
- return;
- } else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- // Small integers are handled below; large integers are handled here.
- if (Size > 4) {
- EmitGlobalConstantLargeInt(CI, AddrSpace);
- return;
+ }
+
+ // Otherwise, it must be a ConstantExpr. Emit the data directive, then emit
+ // the expression value.
+ switch (TM.getTargetData()->getTypeAllocSize(CV->getType())) {
+ case 0: return;
+ case 1: O << MAI->getData8bitsDirective(AddrSpace); break;
+ case 2: O << MAI->getData16bitsDirective(AddrSpace); break;
+ case 4: O << MAI->getData32bitsDirective(AddrSpace); break;
+ case 8:
+ if (const char *Dir = MAI->getData64bitsDirective(AddrSpace)) {
+ O << Dir;
+ break;
}
- } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
- EmitGlobalConstantVector(CP);
+ // FALL THROUGH.
+ default:
+ llvm_unreachable("Target cannot handle given data directive width!");
return;
}
-
- printDataDirective(type, AddrSpace);
+
EmitConstantValueOnly(CV);
- if (VerboseAsm) {
- if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- SmallString<40> S;
- CI->getValue().toStringUnsigned(S, 16);
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " 0x" << S.str();
- }
- }
O << '\n';
}
/// processDebugLoc - Processes the debug information of each machine
/// instruction's DebugLoc.
-void AsmPrinter::processDebugLoc(DebugLoc DL) {
- if (!MAI || !DW)
+void AsmPrinter::processDebugLoc(const MachineInstr *MI,
+ bool BeforePrintingInsn) {
+ if (!MAI || !DW || !MAI->doesSupportDebugInformation()
+ || !DW->ShouldEmitDwarfDebug())
+ return;
+ DebugLoc DL = MI->getDebugLoc();
+ if (DL.isUnknown())
+ return;
+ DILocation CurDLT = MF->getDILocation(DL);
+ if (CurDLT.getScope().isNull())
return;
-
- if (MAI->doesSupportDebugInformation() && DW->ShouldEmitDwarfDebug()) {
- if (!DL.isUnknown()) {
- DebugLocTuple CurDLT = MF->getDebugLocTuple(DL);
-
- if (CurDLT.CompileUnit != 0 && PrevDLT != CurDLT) {
- printLabel(DW->RecordSourceLine(CurDLT.Line, CurDLT.Col,
- DICompileUnit(CurDLT.CompileUnit)));
- O << '\n';
- }
- PrevDLT = CurDLT;
- }
+ if (!BeforePrintingInsn) {
+ // After printing instruction
+ DW->EndScope(MI);
+ } else if (CurDLT.getNode() != PrevDLT) {
+ unsigned L = DW->RecordSourceLine(CurDLT.getLineNumber(),
+ CurDLT.getColumnNumber(),
+ CurDLT.getScope().getNode());
+ printLabel(L);
+ O << '\n';
+ DW->BeginScope(MI, L);
+ PrevDLT = CurDLT.getNode();
}
}
+
/// printInlineAsm - This method formats and prints the specified machine
/// instruction that is an inline asm.
void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
// Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
+ O << '\t';
+
// If this asmstr is empty, just print the #APP/#NOAPP markers.
// These are useful to see where empty asm's wound up.
if (AsmStr[0] == 0) {
unsigned OpFlags = MI->getOperand(OpNo).getImm();
++OpNo; // Skip over the ID number.
- if (Modifier[0]=='l') // labels are target independent
- GetMBBSymbol(MI->getOperand(OpNo).getMBB()
- ->getNumber())->print(O, MAI);
+ if (Modifier[0] == 'l') // labels are target independent
+ O << *GetMBBSymbol(MI->getOperand(OpNo).getMBB()->getNumber());
else {
AsmPrinter *AP = const_cast<AsmPrinter*>(this);
if ((OpFlags & 7) == 4) {
if (Error) {
std::string msg;
raw_string_ostream Msg(msg);
- Msg << "Invalid operand found in inline asm: '"
- << AsmStr << "'\n";
+ Msg << "Invalid operand found in inline asm: '" << AsmStr << "'\n";
MI->print(Msg);
llvm_report_error(Msg.str());
}
<< TRI->getName(MI->getOperand(0).getReg());
}
+void AsmPrinter::printKill(const MachineInstr *MI) const {
+ if (!VerboseAsm) return;
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << " kill:";
+ for (unsigned n = 0, e = MI->getNumOperands(); n != e; ++n) {
+ const MachineOperand &op = MI->getOperand(n);
+ assert(op.isReg() && "KILL instruction must have only register operands");
+ O << ' ' << TRI->getName(op.getReg()) << (op.isDef() ? "<def>" : "<kill>");
+ }
+}
+
/// printLabel - This method prints a local label used by debug and
/// exception handling tables.
void AsmPrinter::printLabel(const MachineInstr *MI) const {
/// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
/// instruction, using the specified assembler variant. Targets should
-/// overried this to format as appropriate.
+/// override this to format as appropriate.
bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode) {
// Target doesn't support this yet!
return true;
}
+MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA,
+ const char *Suffix) const {
+ return GetBlockAddressSymbol(BA->getFunction(), BA->getBasicBlock(), Suffix);
+}
+
+MCSymbol *AsmPrinter::GetBlockAddressSymbol(const Function *F,
+ const BasicBlock *BB,
+ const char *Suffix) const {
+ assert(BB->hasName() &&
+ "Address of anonymous basic block not supported yet!");
+
+ // This code must use the function name itself, and not the function number,
+ // since it must be possible to generate the label name from within other
+ // functions.
+ SmallString<60> FnName;
+ Mang->getNameWithPrefix(FnName, F, false);
+
+ // FIXME: THIS IS BROKEN IF THE LLVM BASIC BLOCK DOESN'T HAVE A NAME!
+ SmallString<60> NameResult;
+ Mang->getNameWithPrefix(NameResult,
+ StringRef("BA") + Twine((unsigned)FnName.size()) +
+ "_" + FnName.str() + "_" + BB->getName() + Suffix,
+ Mangler::Private);
+
+ return OutContext.GetOrCreateSymbol(NameResult.str());
+}
+
MCSymbol *AsmPrinter::GetMBBSymbol(unsigned MBBID) const {
SmallString<60> Name;
raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "BB"
return OutContext.GetOrCreateSymbol(Name.str());
}
+/// GetGlobalValueSymbol - Return the MCSymbol for the specified global
+/// value.
+MCSymbol *AsmPrinter::GetGlobalValueSymbol(const GlobalValue *GV) const {
+ SmallString<60> NameStr;
+ Mang->getNameWithPrefix(NameStr, GV, false);
+ return OutContext.GetOrCreateSymbol(NameStr.str());
+}
+
+/// GetSymbolWithGlobalValueBase - Return the MCSymbol for a symbol with
+/// global value name as its base, with the specified suffix, and where the
+/// symbol is forced to have private linkage if ForcePrivate is true.
+MCSymbol *AsmPrinter::GetSymbolWithGlobalValueBase(const GlobalValue *GV,
+ StringRef Suffix,
+ bool ForcePrivate) const {
+ SmallString<60> NameStr;
+ Mang->getNameWithPrefix(NameStr, GV, ForcePrivate);
+ NameStr.append(Suffix.begin(), Suffix.end());
+ return OutContext.GetOrCreateSymbol(NameStr.str());
+}
+
+/// GetExternalSymbolSymbol - Return the MCSymbol for the specified
+/// ExternalSymbol.
+MCSymbol *AsmPrinter::GetExternalSymbolSymbol(StringRef Sym) const {
+ SmallString<60> NameStr;
+ Mang->getNameWithPrefix(NameStr, Sym);
+ return OutContext.GetOrCreateSymbol(NameStr.str());
+}
+
/// EmitBasicBlockStart - This method prints the label for the specified
/// MachineBasicBlock, an alignment (if present) and a comment describing
/// it if appropriate.
-void AsmPrinter::EmitBasicBlockStart(const MachineBasicBlock *MBB,
- bool PrintColon) const {
+void AsmPrinter::EmitBasicBlockStart(const MachineBasicBlock *MBB) const {
+ // Emit an alignment directive for this block, if needed.
if (unsigned Align = MBB->getAlignment())
EmitAlignment(Log2_32(Align));
- GetMBBSymbol(MBB->getNumber())->print(O, MAI);
-
- if (PrintColon)
- O << ':';
+ // If the block has its address taken, emit a special label to satisfy
+ // references to the block. This is done so that we don't need to
+ // remember the number of this label, and so that we can make
+ // forward references to labels without knowing what their numbers
+ // will be.
+ if (MBB->hasAddressTaken()) {
+ const BasicBlock *BB = MBB->getBasicBlock();
+ OutStreamer.EmitLabel(GetBlockAddressSymbol(BB->getParent(), BB));
+ if (VerboseAsm) {
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << " Address Taken" << '\n';
+ }
+ }
+
+ // Print the main label for the block.
+ if (MBB->pred_empty() || MBB->isOnlyReachableByFallthrough()) {
+ if (VerboseAsm)
+ O << MAI->getCommentString() << " BB#" << MBB->getNumber() << ':';
+ } else {
+ OutStreamer.EmitLabel(GetMBBSymbol(MBB->getNumber()));
+ }
+ // Print some comments to accompany the label.
if (VerboseAsm) {
if (const BasicBlock *BB = MBB->getBasicBlock())
if (BB->hasName()) {
}
EmitComments(*MBB);
+ O << '\n';
}
}
return;
O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
- << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',';
- GetMBBSymbol(MBB->getNumber())->print(O, MAI);
- O << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ','
+ << *GetMBBSymbol(MBB->getNumber())
+ << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << uid << '\n';
}
O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
<< getFunctionNumber() << '_' << uid << '_' << uid2
- << "_set_" << MBB->getNumber() << ',';
- GetMBBSymbol(MBB->getNumber())->print(O, MAI);
- O << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ << "_set_" << MBB->getNumber() << ','
+ << *GetMBBSymbol(MBB->getNumber())
+ << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << uid << '_' << uid2 << '\n';
}
-/// printDataDirective - This method prints the asm directive for the
-/// specified type.
-void AsmPrinter::printDataDirective(const Type *type, unsigned AddrSpace) {
- const TargetData *TD = TM.getTargetData();
- switch (type->getTypeID()) {
- 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");
- case Type::IntegerTyID: {
- unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
- if (BitWidth <= 8)
- O << MAI->getData8bitsDirective(AddrSpace);
- else if (BitWidth <= 16)
- O << MAI->getData16bitsDirective(AddrSpace);
- else if (BitWidth <= 32)
- O << MAI->getData32bitsDirective(AddrSpace);
- else if (BitWidth <= 64) {
- assert(MAI->getData64bitsDirective(AddrSpace) &&
- "Target cannot handle 64-bit constant exprs!");
- O << MAI->getData64bitsDirective(AddrSpace);
- } else {
- llvm_unreachable("Target cannot handle given data directive width!");
- }
- break;
- }
- case Type::PointerTyID:
- if (TD->getPointerSize() == 8) {
- assert(MAI->getData64bitsDirective(AddrSpace) &&
- "Target cannot handle 64-bit pointer exprs!");
- O << MAI->getData64bitsDirective(AddrSpace);
- } else if (TD->getPointerSize() == 2) {
- O << MAI->getData16bitsDirective(AddrSpace);
- } else if (TD->getPointerSize() == 1) {
- O << MAI->getData8bitsDirective(AddrSpace);
- } else {
- O << MAI->getData32bitsDirective(AddrSpace);
- }
- break;
- }
-}
-
-void AsmPrinter::printVisibility(const std::string& Name,
+void AsmPrinter::printVisibility(const MCSymbol *Sym,
unsigned Visibility) const {
if (Visibility == GlobalValue::HiddenVisibility) {
if (const char *Directive = MAI->getHiddenDirective())
- O << Directive << Name << '\n';
+ O << Directive << *Sym << '\n';
} else if (Visibility == GlobalValue::ProtectedVisibility) {
if (const char *Directive = MAI->getProtectedDirective())
- O << Directive << Name << '\n';
+ O << Directive << *Sym << '\n';
}
}
O << Offset;
}
-void AsmPrinter::printMCInst(const MCInst *MI) {
- llvm_unreachable("MCInst printing unavailable on this target!");
-}
-
GCMetadataPrinter *AsmPrinter::GetOrCreateGCPrinter(GCStrategy *S) {
if (!S->usesMetadata())
return 0;
/// EmitComments - Pretty-print comments for instructions
void AsmPrinter::EmitComments(const MachineInstr &MI) const {
- assert(VerboseAsm && !MI.getDebugLoc().isUnknown());
-
- DebugLocTuple DLT = MF->getDebugLocTuple(MI.getDebugLoc());
+ if (!VerboseAsm)
+ return;
- // Print source line info.
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " SrcLine ";
- if (DLT.CompileUnit) {
- std::string Str;
- DICompileUnit CU(DLT.CompileUnit);
- O << CU.getFilename(Str) << " ";
+ bool Newline = false;
+
+ if (!MI.getDebugLoc().isUnknown()) {
+ DILocation DLT = MF->getDILocation(MI.getDebugLoc());
+
+ // Print source line info.
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ';
+ DIScope Scope = DLT.getScope();
+ // Omit the directory, because it's likely to be long and uninteresting.
+ if (!Scope.isNull())
+ O << Scope.getFilename();
+ else
+ O << "<unknown>";
+ O << ':' << DLT.getLineNumber();
+ if (DLT.getColumnNumber() != 0)
+ O << ':' << DLT.getColumnNumber();
+ Newline = true;
+ }
+
+ // Check for spills and reloads
+ int FI;
+
+ const MachineFrameInfo *FrameInfo =
+ MI.getParent()->getParent()->getFrameInfo();
+
+ // We assume a single instruction only has a spill or reload, not
+ // both.
+ const MachineMemOperand *MMO;
+ if (TM.getInstrInfo()->isLoadFromStackSlotPostFE(&MI, FI)) {
+ if (FrameInfo->isSpillSlotObjectIndex(FI)) {
+ MMO = *MI.memoperands_begin();
+ if (Newline) O << '\n';
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Reload";
+ Newline = true;
+ }
+ }
+ else if (TM.getInstrInfo()->hasLoadFromStackSlot(&MI, MMO, FI)) {
+ if (FrameInfo->isSpillSlotObjectIndex(FI)) {
+ if (Newline) O << '\n';
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' '
+ << MMO->getSize() << "-byte Folded Reload";
+ Newline = true;
+ }
+ }
+ else if (TM.getInstrInfo()->isStoreToStackSlotPostFE(&MI, FI)) {
+ if (FrameInfo->isSpillSlotObjectIndex(FI)) {
+ MMO = *MI.memoperands_begin();
+ if (Newline) O << '\n';
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Spill";
+ Newline = true;
+ }
+ }
+ else if (TM.getInstrInfo()->hasStoreToStackSlot(&MI, MMO, FI)) {
+ if (FrameInfo->isSpillSlotObjectIndex(FI)) {
+ if (Newline) O << '\n';
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << ' '
+ << MMO->getSize() << "-byte Folded Spill";
+ Newline = true;
+ }
+ }
+
+ // Check for spill-induced copies
+ unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
+ if (TM.getInstrInfo()->isMoveInstr(MI, SrcReg, DstReg,
+ SrcSubIdx, DstSubIdx)) {
+ if (MI.getAsmPrinterFlag(ReloadReuse)) {
+ if (Newline) O << '\n';
+ O.PadToColumn(MAI->getCommentColumn());
+ O << MAI->getCommentString() << " Reload Reuse";
+ }
}
- O << DLT.Line;
- if (DLT.Col != 0)
- O << ":" << DLT.Col;
}
/// PrintChildLoopComment - Print comments about child loops within
}
/// EmitComments - Pretty-print comments for basic blocks
-void AsmPrinter::EmitComments(const MachineBasicBlock &MBB) const
-{
+void AsmPrinter::EmitComments(const MachineBasicBlock &MBB) const {
if (VerboseAsm) {
// Add loop depth information
const MachineLoop *loop = LI->getLoopFor(&MBB);
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