#include "llvm/CallingConv.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
+#include "llvm/MDNode.h"
#include "llvm/Type.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetAsmInfo.h"
STATISTIC(EmittedInsts, "Number of machine instrs printed");
-static std::string getPICLabelString(unsigned FnNum,
- const TargetAsmInfo *TAI,
- const X86Subtarget* Subtarget) {
- std::string label;
+static cl::opt<bool> NewAsmPrinter("experimental-asm-printer",
+ cl::Hidden);
+
+//===----------------------------------------------------------------------===//
+// Primitive Helper Functions.
+//===----------------------------------------------------------------------===//
+
+void X86ATTAsmPrinter::PrintPICBaseSymbol() const {
if (Subtarget->isTargetDarwin())
- label = "\"L" + utostr_32(FnNum) + "$pb\"";
+ O << "\"L" << getFunctionNumber() << "$pb\"";
else if (Subtarget->isTargetELF())
- label = ".Lllvm$" + utostr_32(FnNum) + "." "$piclabel";
+ O << ".Lllvm$" << getFunctionNumber() << ".$piclabel";
else
assert(0 && "Don't know how to print PIC label!\n");
+}
- return label;
+/// PrintUnmangledNameSafely - Print out the printable characters in the name.
+/// Don't print things like \\n or \\0.
+static void PrintUnmangledNameSafely(const Value *V, raw_ostream &OS) {
+ for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
+ Name != E; ++Name)
+ if (isprint(*Name))
+ OS << *Name;
}
static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
Ty = cast<PointerType>(Ty)->getElementType();
// Size should be aligned to DWORD boundary
- Size += ((TD->getABITypeSize(Ty) + 3)/4)*4;
+ Size += ((TD->getTypeAllocSize(Ty) + 3)/4)*4;
}
// We're not supporting tooooo huge arguments :)
return Info;
}
-/// PrintUnmangledNameSafely - Print out the printable characters in the name.
-/// Don't print things like \n or \0.
-static void PrintUnmangledNameSafely(const Value *V, raw_ostream &OS) {
- for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
- Name != E; ++Name)
- if (isprint(*Name))
- OS << *Name;
-}
-
/// decorateName - Query FunctionInfoMap and use this information for various
/// name decoration.
void X86ATTAsmPrinter::decorateName(std::string &Name,
}
void X86ATTAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
+ unsigned FnAlign = MF.getAlignment();
const Function *F = MF.getFunction();
decorateName(CurrentFnName, F);
SwitchToSection(TAI->SectionForGlobal(F));
-
- unsigned FnAlign = 4;
- if (F->hasFnAttr(Attribute::OptimizeForSize))
- FnAlign = 1;
switch (F->getLinkage()) {
default: assert(0 && "Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
+ case Function::PrivateLinkage:
EmitAlignment(FnAlign, F);
break;
case Function::DLLExportLinkage:
EmitAlignment(FnAlign, F);
O << "\t.globl\t" << CurrentFnName << '\n';
break;
- case Function::LinkOnceLinkage:
- case Function::WeakLinkage:
+ case Function::LinkOnceAnyLinkage:
+ case Function::LinkOnceODRLinkage:
+ case Function::WeakAnyLinkage:
+ case Function::WeakODRLinkage:
EmitAlignment(FnAlign, F);
if (Subtarget->isTargetDarwin()) {
O << "\t.globl\t" << CurrentFnName << '\n';
else if (Subtarget->isTargetCygMing()) {
O << "\t.def\t " << CurrentFnName
<< ";\t.scl\t" <<
- (F->getLinkage() == Function::InternalLinkage ? COFF::C_STAT : COFF::C_EXT)
+ (F->hasInternalLinkage() ? COFF::C_STAT : COFF::C_EXT)
<< ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
<< ";\t.endef\n";
}
O << CurrentFnName << ":\n";
// Add some workaround for linkonce linkage on Cygwin\MinGW
if (Subtarget->isTargetCygMing() &&
- (F->getLinkage() == Function::LinkOnceLinkage ||
- F->getLinkage() == Function::WeakLinkage))
+ (F->hasLinkOnceLinkage() || F->hasWeakLinkage()))
O << "Lllvm$workaround$fake$stub$" << CurrentFnName << ":\n";
}
///
bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
const Function *F = MF.getFunction();
+ this->MF = &MF;
unsigned CC = F->getCallingConv();
SetupMachineFunction(MF);
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {
// Print a label for the basic block.
- if (!I->pred_empty()) {
- printBasicBlockLabel(I, true, true);
+ if (!VerboseAsm && (I->pred_empty() || I->isOnlyReachableByFallthrough())) {
+ // This is an entry block or a block that's only reachable via a
+ // fallthrough edge. In non-VerboseAsm mode, don't print the label.
+ } else {
+ printBasicBlockLabel(I, true, true, VerboseAsm);
O << '\n';
}
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << '\n';
// Emit post-function debug information.
- if (TAI->doesSupportDebugInformation())
+ if (TAI->doesSupportDebugInformation() || TAI->doesSupportExceptionHandling())
DW->EndFunction(&MF);
// Print out jump tables referenced by the function.
return false;
}
-static inline bool shouldPrintGOT(TargetMachine &TM, const X86Subtarget* ST) {
- return ST->isPICStyleGOT() && TM.getRelocationModel() == Reloc::PIC_;
-}
-
-static inline bool shouldPrintPLT(TargetMachine &TM, const X86Subtarget* ST) {
- return ST->isTargetELF() && TM.getRelocationModel() == Reloc::PIC_ &&
- (ST->isPICStyleRIPRel() || ST->isPICStyleGOT());
-}
-
-static inline bool shouldPrintStub(TargetMachine &TM, const X86Subtarget* ST) {
- return ST->isPICStyleStub() && TM.getRelocationModel() != Reloc::Static;
+/// print_pcrel_imm - This is used to print an immediate value that ends up
+/// being encoded as a pc-relative value. These print slightly differently, for
+/// example, a $ is not emitted.
+void X86ATTAsmPrinter::print_pcrel_imm(const MachineInstr *MI, unsigned OpNo) {
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ switch (MO.getType()) {
+ default: assert(0 && "Unknown pcrel immediate operand");
+ case MachineOperand::MO_Immediate:
+ O << MO.getImm();
+ return;
+ case MachineOperand::MO_MachineBasicBlock:
+ printBasicBlockLabel(MO.getMBB(), false, false, VerboseAsm);
+ return;
+
+ case MachineOperand::MO_GlobalAddress: {
+ const GlobalValue *GV = MO.getGlobal();
+ std::string Name = Mang->getValueName(GV);
+ decorateName(Name, GV);
+
+ bool needCloseParen = false;
+ if (Name[0] == '$') {
+ // The name begins with a dollar-sign. In order to avoid having it look
+ // like an integer immediate to the assembler, enclose it in parens.
+ O << '(';
+ needCloseParen = true;
+ }
+
+ // Handle dllimport linkage.
+ if (MO.getTargetFlags() == X86II::MO_DLLIMPORT)
+ O << "__imp_";
+
+ if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
+ FnStubs.insert(Name);
+ printSuffixedName(Name, "$stub");
+ } else {
+ O << Name;
+ }
+
+ // Assemble call via PLT for externally visible symbols.
+ if (MO.getTargetFlags() == X86II::MO_PLT)
+ O << "@PLT";
+
+ if (Subtarget->isTargetCygMing() && GV->isDeclaration())
+ // Save function name for later type emission
+ CygMingStubs.insert(Name);
+
+ printOffset(MO.getOffset());
+
+ if (needCloseParen)
+ O << ')';
+ return;
+ }
+
+ case MachineOperand::MO_ExternalSymbol: {
+ bool needCloseParen = false;
+ std::string Name(TAI->getGlobalPrefix());
+ Name += MO.getSymbolName();
+
+ if (Name[0] == '$') {
+ // The name begins with a dollar-sign. In order to avoid having it look
+ // like an integer immediate to the assembler, enclose it in parens.
+ O << '(';
+ needCloseParen = true;
+ }
+
+ if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
+ FnStubs.insert(Name);
+ printSuffixedName(Name, "$stub");
+ } else {
+ O << Name;
+ }
+
+ if (MO.getTargetFlags() == X86II::MO_GOT_ABSOLUTE_ADDRESS) {
+ O << " + [.-";
+ PrintPICBaseSymbol();
+ O << ']';
+ }
+
+ if (MO.getTargetFlags() == X86II::MO_PLT)
+ O << "@PLT";
+
+ if (needCloseParen)
+ O << ')';
+
+ return;
+ }
+ }
}
void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
- const char *Modifier, bool NotRIPRel) {
+ const char *Modifier) {
const MachineOperand &MO = MI->getOperand(OpNo);
switch (MO.getType()) {
+ default: assert(0 && "unknown operand type!");
case MachineOperand::MO_Register: {
assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
"Virtual registers should not make it this far!");
}
case MachineOperand::MO_Immediate:
- if (!Modifier ||
- (strcmp(Modifier, "debug") && strcmp(Modifier, "mem")))
+ if (!Modifier || (strcmp(Modifier, "debug") && strcmp(Modifier, "mem")))
O << '$';
O << MO.getImm();
return;
- case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB());
- return;
case MachineOperand::MO_JumpTableIndex: {
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
if (!isMemOp) O << '$';
O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() << '_'
<< MO.getIndex();
-
- if (TM.getRelocationModel() == Reloc::PIC_) {
- if (Subtarget->isPICStyleStub())
- O << "-\"" << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
- << "$pb\"";
- else if (Subtarget->isPICStyleGOT())
- O << "@GOTOFF";
- }
-
- if (isMemOp && Subtarget->isPICStyleRIPRel() && !NotRIPRel)
- O << "(%rip)";
- return;
+ break;
}
case MachineOperand::MO_ConstantPoolIndex: {
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
<< MO.getIndex();
- if (TM.getRelocationModel() == Reloc::PIC_) {
- if (Subtarget->isPICStyleStub())
- O << "-\"" << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
- << "$pb\"";
- else if (Subtarget->isPICStyleGOT())
- O << "@GOTOFF";
- }
-
printOffset(MO.getOffset());
-
- if (isMemOp && Subtarget->isPICStyleRIPRel() && !NotRIPRel)
- O << "(%rip)";
- return;
+ break;
}
case MachineOperand::MO_GlobalAddress: {
- bool isCallOp = Modifier && !strcmp(Modifier, "call");
- bool isMemOp = Modifier && !strcmp(Modifier, "mem");
- bool needCloseParen = false;
-
+ bool isMemOp = Modifier && !strcmp(Modifier, "mem");
const GlobalValue *GV = MO.getGlobal();
- const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
- if (!GVar) {
- // If GV is an alias then use the aliasee for determining
- // thread-localness.
- if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV))
- GVar = dyn_cast_or_null<GlobalVariable>(GA->resolveAliasedGlobal(false));
- }
-
- bool isThreadLocal = GVar && GVar->isThreadLocal();
-
std::string Name = Mang->getValueName(GV);
decorateName(Name, GV);
- if (!isMemOp && !isCallOp)
+ bool needCloseParen = false;
+ if (!isMemOp)
O << '$';
else if (Name[0] == '$') {
// The name begins with a dollar-sign. In order to avoid having it look
needCloseParen = true;
}
- if (shouldPrintStub(TM, Subtarget)) {
- // Link-once, declaration, or Weakly-linked global variables need
- // non-lazily-resolved stubs
- if (GV->isDeclaration() || GV->mayBeOverridden()) {
- // Dynamically-resolved functions need a stub for the function.
- if (isCallOp && isa<Function>(GV)) {
- // Function stubs are no longer needed for Mac OS X 10.5 and up.
- if (Subtarget->isTargetDarwin() && Subtarget->getDarwinVers() >= 9) {
- O << Name;
- } else {
- FnStubs.insert(Name);
- printSuffixedName(Name, "$stub");
- }
- } else if (GV->hasHiddenVisibility()) {
- if (!GV->isDeclaration() && !GV->hasCommonLinkage())
- // Definition is not definitely in the current translation unit.
- O << Name;
- else {
- HiddenGVStubs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- }
- } else {
- GVStubs.insert(Name);
- printSuffixedName(Name, "$non_lazy_ptr");
- }
- } else {
- if (GV->hasDLLImportLinkage())
- O << "__imp_";
- O << Name;
- }
-
- if (!isCallOp && TM.getRelocationModel() == Reloc::PIC_)
- O << '-' << getPICLabelString(getFunctionNumber(), TAI, Subtarget);
+ // Handle dllimport linkage.
+ if (MO.getTargetFlags() == X86II::MO_DLLIMPORT) {
+ O << "__imp_" << Name;
+ } else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) {
+ GVStubs.insert(Name);
+ printSuffixedName(Name, "$non_lazy_ptr");
+ } else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY ||
+ MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE){
+ HiddenGVStubs.insert(Name);
+ printSuffixedName(Name, "$non_lazy_ptr");
} else {
- if (GV->hasDLLImportLinkage()) {
- O << "__imp_";
- }
O << Name;
-
- if (isCallOp) {
- if (shouldPrintPLT(TM, Subtarget)) {
- // Assemble call via PLT for externally visible symbols
- if (!GV->hasHiddenVisibility() && !GV->hasProtectedVisibility() &&
- !GV->hasInternalLinkage())
- O << "@PLT";
- }
- if (Subtarget->isTargetCygMing() && GV->isDeclaration())
- // Save function name for later type emission
- FnStubs.insert(Name);
- }
- }
-
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
-
- printOffset(MO.getOffset());
-
- if (isThreadLocal) {
- if (TM.getRelocationModel() == Reloc::PIC_ || Subtarget->is64Bit())
- O << "@TLSGD"; // general dynamic TLS model
- else
- if (GV->isDeclaration())
- O << "@INDNTPOFF"; // initial exec TLS model
- else
- O << "@NTPOFF"; // local exec TLS model
- } else if (isMemOp) {
- if (shouldPrintGOT(TM, Subtarget)) {
- if (Subtarget->GVRequiresExtraLoad(GV, TM, false))
- O << "@GOT";
- else
- O << "@GOTOFF";
- } else if (Subtarget->isPICStyleRIPRel() && !NotRIPRel &&
- TM.getRelocationModel() != Reloc::Static) {
- if (Subtarget->GVRequiresExtraLoad(GV, TM, false))
- O << "@GOTPCREL";
-
- if (needCloseParen) {
- needCloseParen = false;
- O << ')';
- }
-
- // Use rip when possible to reduce code size, except when
- // index or base register are also part of the address. e.g.
- // foo(%rip)(%rcx,%rax,4) is not legal
- O << "(%rip)";
- }
}
if (needCloseParen)
O << ')';
-
- return;
+
+ printOffset(MO.getOffset());
+ break;
}
- case MachineOperand::MO_ExternalSymbol: {
- bool isCallOp = Modifier && !strcmp(Modifier, "call");
- bool needCloseParen = false;
- std::string Name(TAI->getGlobalPrefix());
- Name += MO.getSymbolName();
- // Print function stub suffix unless it's Mac OS X 10.5 and up.
- if (isCallOp && shouldPrintStub(TM, Subtarget) &&
- !(Subtarget->isTargetDarwin() && Subtarget->getDarwinVers() >= 9)) {
- FnStubs.insert(Name);
- printSuffixedName(Name, "$stub");
- return;
- }
- if (!isCallOp)
- O << '$';
- else if (Name[0] == '$') {
- // The name begins with a dollar-sign. In order to avoid having it look
- // like an integer immediate to the assembler, enclose it in parens.
- O << '(';
- needCloseParen = true;
- }
-
- O << Name;
-
- if (shouldPrintPLT(TM, Subtarget)) {
- std::string GOTName(TAI->getGlobalPrefix());
- GOTName+="_GLOBAL_OFFSET_TABLE_";
- if (Name == GOTName)
- // HACK! Emit extra offset to PC during printing GOT offset to
- // compensate for the size of popl instruction. The resulting code
- // should look like:
- // call .piclabel
- // piclabel:
- // popl %some_register
- // addl $_GLOBAL_ADDRESS_TABLE_ + [.-piclabel], %some_register
- O << " + [.-"
- << getPICLabelString(getFunctionNumber(), TAI, Subtarget) << ']';
-
- if (isCallOp)
- O << "@PLT";
- }
-
- if (needCloseParen)
- O << ')';
-
- if (!isCallOp && Subtarget->isPICStyleRIPRel())
- O << "(%rip)";
-
- return;
+ case MachineOperand::MO_ExternalSymbol:
+ /// NOTE: MO_ExternalSymbol in a non-pcrel_imm context is *only* generated
+ /// by _GLOBAL_OFFSET_TABLE_ on X86-32. All others are call operands, which
+ /// are pcrel_imm's.
+ assert(!Subtarget->is64Bit());
+ // These are never used as memory operands.
+ assert(Modifier == 0 || strcmp(Modifier, "mem"));
+ O << '$';
+ O << TAI->getGlobalPrefix();
+ O << MO.getSymbolName();
+ break;
}
+
+ switch (MO.getTargetFlags()) {
default:
- O << "<unknown operand type>"; return;
+ assert(0 && "Unknown target flag on GV operand");
+ case X86II::MO_NO_FLAG: // No flag.
+ break;
+ case X86II::MO_DARWIN_NONLAZY:
+ case X86II::MO_DARWIN_HIDDEN_NONLAZY:
+ case X86II::MO_DLLIMPORT:
+ // These affect the name of the symbol, not any suffix.
+ break;
+ case X86II::MO_GOT_ABSOLUTE_ADDRESS:
+ O << " + [.-";
+ PrintPICBaseSymbol();
+ O << ']';
+ break;
+ case X86II::MO_PIC_BASE_OFFSET:
+ case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
+ case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
+ O << '-';
+ PrintPICBaseSymbol();
+ break;
+ case X86II::MO_TLSGD: O << "@TLSGD"; break;
+ case X86II::MO_GOTTPOFF: O << "@GOTTPOFF"; break;
+ case X86II::MO_INDNTPOFF: O << "@INDNTPOFF"; break;
+ case X86II::MO_TPOFF: O << "@TPOFF"; break;
+ case X86II::MO_NTPOFF: O << "@NTPOFF"; break;
+ case X86II::MO_GOTPCREL: O << "@GOTPCREL"; break;
+ case X86II::MO_GOT: O << "@GOT"; break;
+ case X86II::MO_GOTOFF: O << "@GOTOFF"; break;
}
}
}
}
-void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op,
- const char *Modifier){
- assert(isMem(MI, Op) && "Invalid memory reference!");
- MachineOperand BaseReg = MI->getOperand(Op);
- MachineOperand IndexReg = MI->getOperand(Op+2);
+void X86ATTAsmPrinter::printLeaMemReference(const MachineInstr *MI, unsigned Op,
+ const char *Modifier) {
+ const MachineOperand &BaseReg = MI->getOperand(Op);
+ const MachineOperand &IndexReg = MI->getOperand(Op+2);
const MachineOperand &DispSpec = MI->getOperand(Op+3);
- bool NotRIPRel = IndexReg.getReg() || BaseReg.getReg();
- if (DispSpec.isGlobal() ||
- DispSpec.isCPI() ||
- DispSpec.isJTI()) {
- printOperand(MI, Op+3, "mem", NotRIPRel);
- } else {
+ // If we really don't want to print out (rip), don't.
+ bool HasBaseReg = BaseReg.getReg() != 0;
+ if (HasBaseReg && Modifier && !strcmp(Modifier, "no-rip") &&
+ BaseReg.getReg() == X86::RIP)
+ HasBaseReg = false;
+
+ // HasParenPart - True if we will print out the () part of the mem ref.
+ bool HasParenPart = IndexReg.getReg() || HasBaseReg;
+
+ if (DispSpec.isImm()) {
int DispVal = DispSpec.getImm();
- if (DispVal || (!IndexReg.getReg() && !BaseReg.getReg()))
+ if (DispVal || !HasParenPart)
O << DispVal;
+ } else {
+ assert(DispSpec.isGlobal() || DispSpec.isCPI() ||
+ DispSpec.isJTI() || DispSpec.isSymbol());
+ printOperand(MI, Op+3, "mem");
}
- if (IndexReg.getReg() || BaseReg.getReg()) {
- unsigned ScaleVal = MI->getOperand(Op+1).getImm();
- unsigned BaseRegOperand = 0, IndexRegOperand = 2;
-
- // There are cases where we can end up with ESP/RSP in the indexreg slot.
- // If this happens, swap the base/index register to support assemblers that
- // don't work when the index is *SP.
- if (IndexReg.getReg() == X86::ESP || IndexReg.getReg() == X86::RSP) {
- assert(ScaleVal == 1 && "Scale not supported for stack pointer!");
- std::swap(BaseReg, IndexReg);
- std::swap(BaseRegOperand, IndexRegOperand);
- }
+ if (HasParenPart) {
+ assert(IndexReg.getReg() != X86::ESP &&
+ "X86 doesn't allow scaling by ESP");
O << '(';
- if (BaseReg.getReg())
- printOperand(MI, Op+BaseRegOperand, Modifier);
+ if (HasBaseReg)
+ printOperand(MI, Op, Modifier);
if (IndexReg.getReg()) {
O << ',';
- printOperand(MI, Op+IndexRegOperand, Modifier);
+ printOperand(MI, Op+2, Modifier);
+ unsigned ScaleVal = MI->getOperand(Op+1).getImm();
if (ScaleVal != 1)
O << ',' << ScaleVal;
}
}
}
+void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op,
+ const char *Modifier) {
+ assert(isMem(MI, Op) && "Invalid memory reference!");
+ const MachineOperand &Segment = MI->getOperand(Op+4);
+ if (Segment.getReg()) {
+ printOperand(MI, Op+4, Modifier);
+ O << ':';
+ }
+ printLeaMemReference(MI, Op, Modifier);
+}
+
void X86ATTAsmPrinter::printPICJumpTableSetLabel(unsigned uid,
const MachineBasicBlock *MBB) const {
if (!TAI->getSetDirective())
if (Subtarget->isPICStyleRIPRel())
O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << uid << '\n';
- else
- O << '-' << getPICLabelString(getFunctionNumber(), TAI, Subtarget) << '\n';
+ else {
+ O << '-';
+ PrintPICBaseSymbol();
+ O << '\n';
+ }
}
+
void X86ATTAsmPrinter::printPICLabel(const MachineInstr *MI, unsigned Op) {
- std::string label = getPICLabelString(getFunctionNumber(), TAI, Subtarget);
- O << label << '\n' << label << ':';
+ PrintPICBaseSymbol();
+ O << '\n';
+ PrintPICBaseSymbol();
+ O << ':';
}
printBasicBlockLabel(MBB, false, false, false);
}
-bool X86ATTAsmPrinter::printAsmMRegister(const MachineOperand &MO,
- const char Mode) {
+bool X86ATTAsmPrinter::printAsmMRegister(const MachineOperand &MO, char Mode) {
unsigned Reg = MO.getReg();
switch (Mode) {
default: return true; // Unknown mode.
printOperand(MI, OpNo);
return false;
- case 'P': // Don't print @PLT, but do print as memory.
- printOperand(MI, OpNo, "mem");
+ case 'P': // This is the operand of a call, treat specially.
+ print_pcrel_imm(MI, OpNo);
return false;
+
+ case 'n': { // Negate the immediate or print a '-' before the operand.
+ // Note: this is a temporary solution. It should be handled target
+ // independently as part of the 'MC' work.
+ const MachineOperand &MO = MI->getOperand(OpNo);
+ if (MO.isImm()) {
+ O << -MO.getImm();
+ return false;
+ }
+ O << '-';
+ }
}
}
case 'q': // Print SImode register
// These only apply to registers, ignore on mem.
break;
+ case 'P': // Don't print @PLT, but do print as memory.
+ printMemReference(MI, OpNo, "no-rip");
+ return false;
}
}
printMemReference(MI, OpNo);
return false;
}
-/// printMachineInstruction -- Print out a single X86 LLVM instruction
-/// MI in AT&T syntax to the current output stream.
+static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) {
+ // Convert registers in the addr mode according to subreg64.
+ for (unsigned i = 0; i != 4; ++i) {
+ if (!MI->getOperand(i).isReg()) continue;
+
+ unsigned Reg = MI->getOperand(i).getReg();
+ if (Reg == 0) continue;
+
+ MI->getOperand(i).setReg(getX86SubSuperRegister(Reg, MVT::i64));
+ }
+}
+
+/// printMachineInstruction -- Print out a single X86 LLVM instruction MI in
+/// AT&T syntax to the current output stream.
///
void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
++EmittedInsts;
+ if (NewAsmPrinter) {
+ if (MI->getOpcode() == TargetInstrInfo::INLINEASM) {
+ O << "\t";
+ printInlineAsm(MI);
+ return;
+ } else if (MI->isLabel()) {
+ printLabel(MI);
+ return;
+ } else if (MI->getOpcode() == TargetInstrInfo::DECLARE) {
+ printDeclare(MI);
+ return;
+ } else if (MI->getOpcode() == TargetInstrInfo::IMPLICIT_DEF) {
+ printImplicitDef(MI);
+ return;
+ }
+
+ O << "NEW: ";
+ MCInst TmpInst;
+
+ TmpInst.setOpcode(MI->getOpcode());
+
+ for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+ const MachineOperand &MO = MI->getOperand(i);
+
+ MCOperand MCOp;
+ if (MO.isReg()) {
+ MCOp.MakeReg(MO.getReg());
+ } else if (MO.isImm()) {
+ MCOp.MakeImm(MO.getImm());
+ } else if (MO.isMBB()) {
+ MCOp.MakeMBBLabel(getFunctionNumber(), MO.getMBB()->getNumber());
+ } else {
+ assert(0 && "Unimp");
+ }
+
+ TmpInst.addOperand(MCOp);
+ }
+
+ switch (TmpInst.getOpcode()) {
+ case X86::LEA64_32r:
+ // Handle the 'subreg rewriting' for the lea64_32mem operand.
+ lower_lea64_32mem(&TmpInst, 1);
+ break;
+ }
+
+ // FIXME: Convert TmpInst.
+ printInstruction(&TmpInst);
+ O << "OLD: ";
+ }
+
// Call the autogenerated instruction printer routines.
printInstruction(MI);
}
/// doInitialization
bool X86ATTAsmPrinter::doInitialization(Module &M) {
-
- bool Result = AsmPrinter::doInitialization(M);
-
- if (TAI->doesSupportDebugInformation()) {
- // Let PassManager know we need debug information and relay
- // the MachineModuleInfo address on to DwarfWriter.
- // AsmPrinter::doInitialization did this analysis.
- MMI = getAnalysisToUpdate<MachineModuleInfo>();
- DW = getAnalysisToUpdate<DwarfWriter>();
- DW->BeginModule(&M, MMI, O, this, TAI);
+ if (NewAsmPrinter) {
+ Context = new MCContext();
+ // FIXME: Send this to "O" instead of outs(). For now, we force it to
+ // stdout to make it easy to compare.
+ Streamer = createAsmStreamer(*Context, outs());
}
-
- // Darwin wants symbols to be quoted if they have complex names.
- if (Subtarget->isTargetDarwin())
- Mang->setUseQuotes(true);
-
- return Result;
+
+ return AsmPrinter::doInitialization(M);
}
-
void X86ATTAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
const TargetData *TD = TM.getTargetData();
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
+ if (isa<MDNode>(C) || isa<MDString>(C))
+ return;
const Type *Type = C->getType();
- unsigned Size = TD->getABITypeSize(Type);
+ unsigned Size = TD->getTypeAllocSize(Type);
unsigned Align = TD->getPreferredAlignmentLog(GVar);
printVisibility(name, GVar->getVisibility());
SwitchToSection(TAI->SectionForGlobal(GVar));
- if (C->isNullValue() && !GVar->hasSection()) {
+ if (C->isNullValue() && !GVar->hasSection() &&
+ !(Subtarget->isTargetDarwin() &&
+ TAI->SectionKindForGlobal(GVar) == SectionKind::RODataMergeStr)) {
// FIXME: This seems to be pretty darwin-specific
if (GVar->hasExternalLinkage()) {
if (const char *Directive = TAI->getZeroFillDirective()) {
}
if (!GVar->isThreadLocal() &&
- (GVar->hasInternalLinkage() || GVar->mayBeOverridden())) {
+ (GVar->hasLocalLinkage() || GVar->isWeakForLinker())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (TAI->getLCOMMDirective() != NULL) {
- if (GVar->hasInternalLinkage()) {
+ if (GVar->hasLocalLinkage()) {
O << TAI->getLCOMMDirective() << name << ',' << Size;
if (Subtarget->isTargetDarwin())
O << ',' << Align;
O << "\t.globl " << name << '\n'
<< TAI->getWeakDefDirective() << name << '\n';
EmitAlignment(Align, GVar);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << ' ';
- PrintUnmangledNameSafely(GVar, O);
+ O << name << ":";
+ if (VerboseAsm) {
+ O << "\t\t\t\t" << TAI->getCommentString() << ' ';
+ PrintUnmangledNameSafely(GVar, O);
+ }
O << '\n';
EmitGlobalConstant(C);
return;
}
} else {
if (!Subtarget->isTargetCygMing()) {
- if (GVar->hasInternalLinkage())
+ if (GVar->hasLocalLinkage())
O << "\t.local\t" << name << '\n';
}
O << TAI->getCOMMDirective() << name << ',' << Size;
if (TAI->getCOMMDirectiveTakesAlignment())
O << ',' << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
}
- O << "\t\t" << TAI->getCommentString() << ' ';
- PrintUnmangledNameSafely(GVar, O);
+ if (VerboseAsm) {
+ O << "\t\t" << TAI->getCommentString() << ' ';
+ PrintUnmangledNameSafely(GVar, O);
+ }
O << '\n';
return;
}
switch (GVar->getLinkage()) {
case GlobalValue::CommonLinkage:
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage:
+ case GlobalValue::LinkOnceAnyLinkage:
+ case GlobalValue::LinkOnceODRLinkage:
+ case GlobalValue::WeakAnyLinkage:
+ case GlobalValue::WeakODRLinkage:
if (Subtarget->isTargetDarwin()) {
O << "\t.globl " << name << '\n'
<< TAI->getWeakDefDirective() << name << '\n';
// If external or appending, declare as a global symbol
O << "\t.globl " << name << '\n';
// FALL THROUGH
+ case GlobalValue::PrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:
}
EmitAlignment(Align, GVar);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << ' ';
- PrintUnmangledNameSafely(GVar, O);
+ O << name << ":";
+ if (VerboseAsm){
+ O << "\t\t\t\t" << TAI->getCommentString() << ' ';
+ PrintUnmangledNameSafely(GVar, O);
+ }
O << '\n';
if (TAI->hasDotTypeDotSizeDirective())
O << "\t.size\t" << name << ", " << Size << '\n';
- // If the initializer is a extern weak symbol, remember to emit the weak
- // reference!
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
-
EmitGlobalConstant(C);
}
-/// printGVStub - Print stub for a global value.
-///
-void X86ATTAsmPrinter::printGVStub(const char *GV, const char *Prefix) {
- printSuffixedName(GV, "$non_lazy_ptr", Prefix);
- O << ":\n\t.indirect_symbol ";
- if (Prefix) O << Prefix;
- O << GV << "\n\t.long\t0\n";
-}
-
-/// printHiddenGVStub - Print stub for a hidden global value.
-///
-void X86ATTAsmPrinter::printHiddenGVStub(const char *GV, const char *Prefix) {
- EmitAlignment(2);
- printSuffixedName(GV, "$non_lazy_ptr", Prefix);
- if (Prefix) O << Prefix;
- O << ":\n" << TAI->getData32bitsDirective() << GV << '\n';
-}
-
-
bool X86ATTAsmPrinter::doFinalization(Module &M) {
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
}
- // Output linker support code for dllexported globals
- if (!DLLExportedGVs.empty())
- SwitchToDataSection(".section .drectve");
-
- for (StringSet<>::iterator i = DLLExportedGVs.begin(),
- e = DLLExportedGVs.end();
- i != e; ++i)
- O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
-
- if (!DLLExportedFns.empty()) {
- SwitchToDataSection(".section .drectve");
- }
-
- for (StringSet<>::iterator i = DLLExportedFns.begin(),
- e = DLLExportedFns.end();
- i != e; ++i)
- O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
-
if (Subtarget->isTargetDarwin()) {
SwitchToDataSection("");
-
- // Output stubs for dynamically-linked functions
- for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i) {
- SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
- "self_modifying_code+pure_instructions,5", 0);
- const char *p = i->getKeyData();
- printSuffixedName(p, "$stub");
- O << ":\n"
- "\t.indirect_symbol " << p << "\n"
- "\thlt ; hlt ; hlt ; hlt ; hlt\n";
- }
-
- O << '\n';
-
- // Print global value stubs.
- bool InStubSection = false;
+
+ // Add the (possibly multiple) personalities to the set of global value
+ // stubs. Only referenced functions get into the Personalities list.
if (TAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
- // Add the (possibly multiple) personalities to the set of global values.
- // Only referenced functions get into the Personalities list.
- const std::vector<Function *>& Personalities = MMI->getPersonalities();
- for (std::vector<Function *>::const_iterator I = Personalities.begin(),
- E = Personalities.end(); I != E; ++I) {
- if (!*I)
+ const std::vector<Function*> &Personalities = MMI->getPersonalities();
+ for (unsigned i = 0, e = Personalities.size(); i != e; ++i) {
+ if (Personalities[i] == 0)
continue;
- if (!InStubSection) {
- SwitchToDataSection(
- "\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
- InStubSection = true;
- }
- printGVStub((*I)->getNameStart(), "_");
+ std::string Name = Mang->getValueName(Personalities[i]);
+ decorateName(Name, Personalities[i]);
+ GVStubs.insert(Name);
}
}
+ // Output stubs for dynamically-linked functions
+ if (!FnStubs.empty()) {
+ for (StringSet<>::iterator I = FnStubs.begin(), E = FnStubs.end();
+ I != E; ++I) {
+ SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
+ "self_modifying_code+pure_instructions,5", 0);
+ const char *Name = I->getKeyData();
+ printSuffixedName(Name, "$stub");
+ O << ":\n"
+ "\t.indirect_symbol " << Name << "\n"
+ "\thlt ; hlt ; hlt ; hlt ; hlt\n";
+ }
+ O << '\n';
+ }
+
// Output stubs for external and common global variables.
- if (!InStubSection && !GVStubs.empty())
+ if (!GVStubs.empty()) {
SwitchToDataSection(
"\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
- for (StringSet<>::iterator i = GVStubs.begin(), e = GVStubs.end();
- i != e; ++i)
- printGVStub(i->getKeyData());
+ for (StringSet<>::iterator I = GVStubs.begin(), E = GVStubs.end();
+ I != E; ++I) {
+ const char *Name = I->getKeyData();
+ printSuffixedName(Name, "$non_lazy_ptr");
+ O << ":\n\t.indirect_symbol " << Name << "\n\t.long\t0\n";
+ }
+ }
if (!HiddenGVStubs.empty()) {
SwitchToSection(TAI->getDataSection());
- for (StringSet<>::iterator i = HiddenGVStubs.begin(), e = HiddenGVStubs.end();
- i != e; ++i)
- printHiddenGVStub(i->getKeyData());
+ EmitAlignment(2);
+ for (StringSet<>::iterator I = HiddenGVStubs.begin(),
+ E = HiddenGVStubs.end(); I != E; ++I) {
+ const char *Name = I->getKeyData();
+ printSuffixedName(Name, "$non_lazy_ptr");
+ O << ":\n" << TAI->getData32bitsDirective() << Name << '\n';
+ }
}
- // Emit final debug information.
- DwarfWriter *DW = getAnalysisToUpdate<DwarfWriter>();
- DW->EndModule();
-
// Funny Darwin hack: This flag tells the linker that no global symbols
// contain code that falls through to other global symbols (e.g. the obvious
// implementation of multiple entry points). If this doesn't occur, the
O << "\t.subsections_via_symbols\n";
} else if (Subtarget->isTargetCygMing()) {
// Emit type information for external functions
- for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ for (StringSet<>::iterator i = CygMingStubs.begin(), e = CygMingStubs.end();
i != e; ++i) {
O << "\t.def\t " << i->getKeyData()
<< ";\t.scl\t" << COFF::C_EXT
<< ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
<< ";\t.endef\n";
}
-
- // Emit final debug information.
- DwarfWriter *DW = getAnalysisToUpdate<DwarfWriter>();
- DW->EndModule();
- } else if (Subtarget->isTargetELF()) {
- // Emit final debug information.
- DwarfWriter *DW = getAnalysisToUpdate<DwarfWriter>();
- DW->EndModule();
}
-
- return AsmPrinter::doFinalization(M);
+
+
+ // Output linker support code for dllexported globals on windows.
+ if (!DLLExportedGVs.empty()) {
+ SwitchToDataSection(".section .drectve");
+
+ for (StringSet<>::iterator i = DLLExportedGVs.begin(),
+ e = DLLExportedGVs.end(); i != e; ++i)
+ O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
+ }
+
+ if (!DLLExportedFns.empty()) {
+ SwitchToDataSection(".section .drectve");
+
+ for (StringSet<>::iterator i = DLLExportedFns.begin(),
+ e = DLLExportedFns.end();
+ i != e; ++i)
+ O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
+ }
+
+ // Do common shutdown.
+ bool Changed = AsmPrinter::doFinalization(M);
+
+ if (NewAsmPrinter) {
+ Streamer->Finish();
+
+ delete Streamer;
+ delete Context;
+ Streamer = 0;
+ Context = 0;
+ }
+
+ return Changed;
}
// Include the auto-generated portion of the assembly writer.
projects / oota-llvm.git / blobdiff