//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/Statistic.h"
///
void printRegister(const MachineOperand &MO, bool R0AsZero) {
unsigned RegNo = MO.getReg();
- assert(MRegisterInfo::isPhysicalRegister(RegNo) && "Not physreg??");
+ assert(TargetRegisterInfo::isPhysicalRegister(RegNo) && "Not physreg??");
// If we should use 0 for R0.
if (R0AsZero && RegNo == PPC::R0) {
return;
}
- const char *RegName = TM.getRegisterInfo()->get(RegNo).Name;
+ const char *RegName = TM.getRegisterInfo()->get(RegNo).AsmName;
// Linux assembler (Others?) does not take register mnemonics.
// FIXME - What about special registers used in mfspr/mtspr?
if (!Subtarget.isDarwin()) RegName = stripRegisterPrefix(RegName);
if (MO.isRegister()) {
printRegister(MO, false);
} else if (MO.isImmediate()) {
- O << MO.getImmedValue();
+ O << MO.getImm();
} else {
printOp(MO);
}
void printS5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- char value = MI->getOperand(OpNo).getImmedValue();
+ char value = MI->getOperand(OpNo).getImm();
value = (value << (32-5)) >> (32-5);
O << (int)value;
}
void printU5ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- unsigned char value = MI->getOperand(OpNo).getImmedValue();
+ unsigned char value = MI->getOperand(OpNo).getImm();
assert(value <= 31 && "Invalid u5imm argument!");
O << (unsigned int)value;
}
void printU6ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- unsigned char value = MI->getOperand(OpNo).getImmedValue();
+ unsigned char value = MI->getOperand(OpNo).getImm();
assert(value <= 63 && "Invalid u6imm argument!");
O << (unsigned int)value;
}
void printS16ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (short)MI->getOperand(OpNo).getImmedValue();
+ O << (short)MI->getOperand(OpNo).getImm();
}
void printU16ImmOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (unsigned short)MI->getOperand(OpNo).getImmedValue();
+ O << (unsigned short)MI->getOperand(OpNo).getImm();
}
void printS16X4ImmOperand(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
- O << (short)(MI->getOperand(OpNo).getImmedValue()*4);
+ O << (short)(MI->getOperand(OpNo).getImm()*4);
} else {
O << "lo16(";
printOp(MI->getOperand(OpNo));
// Branches can take an immediate operand. This is used by the branch
// selection pass to print $+8, an eight byte displacement from the PC.
if (MI->getOperand(OpNo).isImmediate()) {
- O << "$+" << MI->getOperand(OpNo).getImmedValue()*4;
+ O << "$+" << MI->getOperand(OpNo).getImm()*4;
} else {
printOp(MI->getOperand(OpNo));
}
if (TM.getRelocationModel() != Reloc::Static) {
if (MO.getType() == MachineOperand::MO_GlobalAddress) {
GlobalValue *GV = MO.getGlobal();
- if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ if (((GV->isDeclaration() || GV->hasWeakLinkage() ||
GV->hasLinkOnceLinkage()))) {
// Dynamically-resolved functions need a stub for the function.
std::string Name = Mang->getValueName(GV);
printOp(MI->getOperand(OpNo));
}
void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo) {
- O << (int)MI->getOperand(OpNo).getImmedValue()*4;
+ O << (int)MI->getOperand(OpNo).getImm()*4;
}
void printPICLabel(const MachineInstr *MI, unsigned OpNo) {
O << "\"L" << getFunctionNumber() << "$pb\"\n";
if (MI->getOperand(OpNo).isImmediate()) {
printS16ImmOperand(MI, OpNo);
} else {
- O << "ha16(";
+ if (Subtarget.isDarwin()) O << "ha16(";
printOp(MI->getOperand(OpNo));
if (TM.getRelocationModel() == Reloc::PIC_)
- O << "-\"L" << getFunctionNumber() << "$pb\")";
- else
+ O << "-\"L" << getFunctionNumber() << "$pb\"";
+ if (Subtarget.isDarwin())
O << ')';
+ else
+ O << "@ha";
}
}
void printSymbolLo(const MachineInstr *MI, unsigned OpNo) {
if (MI->getOperand(OpNo).isImmediate()) {
printS16ImmOperand(MI, OpNo);
} else {
- O << "lo16(";
+ if (Subtarget.isDarwin()) O << "lo16(";
printOp(MI->getOperand(OpNo));
if (TM.getRelocationModel() == Reloc::PIC_)
- O << "-\"L" << getFunctionNumber() << "$pb\")";
- else
+ O << "-\"L" << getFunctionNumber() << "$pb\"";
+ if (Subtarget.isDarwin())
O << ')';
+ else
+ O << "@l";
}
}
void printcrbitm(const MachineInstr *MI, unsigned OpNo) {
virtual bool runOnMachineFunction(MachineFunction &F) = 0;
virtual bool doFinalization(Module &M) = 0;
+
+ virtual void EmitExternalGlobal(const GlobalVariable *GV);
};
/// LinuxAsmPrinter - PowerPC assembly printer, customized for Linux
struct VISIBILITY_HIDDEN DarwinAsmPrinter : public PPCAsmPrinter {
DwarfWriter DW;
+ MachineModuleInfo *MMI;
DarwinAsmPrinter(std::ostream &O, PPCTargetMachine &TM,
const TargetAsmInfo *T)
- : PPCAsmPrinter(O, TM, T), DW(O, this, T) {
+ : PPCAsmPrinter(O, TM, T), DW(O, this, T), MMI(0) {
}
virtual const char *getPassName() const {
return;
case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMachineBasicBlock());
+ printBasicBlockLabel(MO.getMBB());
return;
case MachineOperand::MO_JumpTableIndex:
O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << MO.getJumpTableIndex();
+ << '_' << MO.getIndex();
// FIXME: PIC relocation model
return;
case MachineOperand::MO_ConstantPoolIndex:
O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber()
- << '_' << MO.getConstantPoolIndex();
+ << '_' << MO.getIndex();
return;
case MachineOperand::MO_ExternalSymbol:
// Computing the address of an external symbol, not calling it.
// External or weakly linked global variables need non-lazily-resolved stubs
if (TM.getRelocationModel() != Reloc::Static) {
- if (((GV->isExternal() || GV->hasWeakLinkage() ||
+ if (((GV->isDeclaration() || GV->hasWeakLinkage() ||
GV->hasLinkOnceLinkage()))) {
GVStubs.insert(Name);
O << "L" << Name << "$non_lazy_ptr";
}
O << Name;
+ if (MO.getOffset() > 0)
+ O << "+" << MO.getOffset();
+ else if (MO.getOffset() < 0)
+ O << MO.getOffset();
+
if (GV->hasExternalWeakLinkage())
ExtWeakSymbols.insert(GV);
return;
}
}
+/// EmitExternalGlobal - In this case we need to use the indirect symbol.
+///
+void PPCAsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
+ std::string Name = getGlobalLinkName(GV);
+ if (TM.getRelocationModel() != Reloc::Static) {
+ GVStubs.insert(Name);
+ O << "L" << Name << "$non_lazy_ptr";
+ return;
+ }
+ O << Name;
+}
+
/// PrintAsmOperand - Print out an operand for an inline asm expression.
///
bool PPCAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
return true;
++OpNo; // Return the high-part.
break;
+ case 'I':
+ // Write 'i' if an integer constant, otherwise nothing. Used to print
+ // addi vs add, etc.
+ if (MI->getOperand(OpNo).isImmediate())
+ O << "i";
+ return false;
}
}
const char *ExtraCode) {
if (ExtraCode && ExtraCode[0])
return true; // Unknown modifier.
- printMemRegReg(MI, OpNo);
+ if (MI->getOperand(OpNo).isRegister())
+ printMemRegReg(MI, OpNo);
+ else
+ printMemRegImm(MI, OpNo);
return false;
}
// Check for slwi/srwi mnemonics.
if (MI->getOpcode() == PPC::RLWINM) {
bool FoundMnemonic = false;
- unsigned char SH = MI->getOperand(2).getImmedValue();
- unsigned char MB = MI->getOperand(3).getImmedValue();
- unsigned char ME = MI->getOperand(4).getImmedValue();
+ unsigned char SH = MI->getOperand(2).getImm();
+ unsigned char MB = MI->getOperand(3).getImm();
+ unsigned char ME = MI->getOperand(4).getImm();
if (SH <= 31 && MB == 0 && ME == (31-SH)) {
- O << "slwi "; FoundMnemonic = true;
+ O << "\tslwi "; FoundMnemonic = true;
}
if (SH <= 31 && MB == (32-SH) && ME == 31) {
- O << "srwi "; FoundMnemonic = true;
+ O << "\tsrwi "; FoundMnemonic = true;
SH = 32-SH;
}
if (FoundMnemonic) {
}
} else if (MI->getOpcode() == PPC::OR || MI->getOpcode() == PPC::OR8) {
if (MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
- O << "mr ";
+ O << "\tmr ";
printOperand(MI, 0);
O << ", ";
printOperand(MI, 1);
return;
}
} else if (MI->getOpcode() == PPC::RLDICR) {
- unsigned char SH = MI->getOperand(2).getImmedValue();
- unsigned char ME = MI->getOperand(3).getImmedValue();
+ unsigned char SH = MI->getOperand(2).getImm();
+ unsigned char ME = MI->getOperand(3).getImm();
// rldicr RA, RS, SH, 63-SH == sldi RA, RS, SH
if (63-SH == ME) {
- O << "sldi ";
+ O << "\tsldi ";
printOperand(MI, 0);
O << ", ";
printOperand(MI, 1);
I != E; ++I) {
// Print a label for the basic block.
if (I != MF.begin()) {
- printBasicBlockLabel(I, true);
+ printBasicBlockLabel(I, true, true);
O << '\n';
}
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
II != E; ++II) {
// Print the assembly for the instruction.
- O << "\t";
printMachineInstruction(II);
}
}
}
bool LinuxAsmPrinter::doInitialization(Module &M) {
- AsmPrinter::doInitialization(M);
+ bool Result = AsmPrinter::doInitialization(M);
// GNU as handles section names wrapped in quotes
Mang->setUseQuotes(true);
// Emit initial debug information.
DW.BeginModule(&M);
- return false;
+ return Result;
+}
+
+/// PrintUnmangledNameSafely - Print out the printable characters in the name.
+/// Don't print things like \n or \0.
+static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
+ for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
+ Name != E; ++Name)
+ if (isprint(*Name))
+ OS << *Name;
}
bool LinuxAsmPrinter::doFinalization(Module &M) {
O << Directive << name << "\n";
Constant *C = I->getInitializer();
- unsigned Size = TD->getTypeSize(C->getType());
+ unsigned Size = TD->getABITypeSize(C->getType());
unsigned Align = TD->getPreferredAlignmentLog(I);
if (C->isNullValue() && /* FIXME: Verify correct */
+ !I->hasSection() &&
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage() ||
- (I->hasExternalLinkage() && !I->hasSection()))) {
+ I->hasLinkOnceLinkage() || I->hasExternalLinkage())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (I->hasExternalLinkage()) {
O << "\t.global " << name << '\n';
O << "\t.type " << name << ", @object\n";
- //O << "\t.zerofill __DATA, __common, " << name << ", "
- // << Size << ", " << Align;
+ if (TAI->getBSSSection())
+ SwitchToDataSection(TAI->getBSSSection(), I);
+ O << name << ":\n";
+ O << "\t.zero " << Size << "\n";
} else if (I->hasInternalLinkage()) {
SwitchToDataSection("\t.data", I);
O << TAI->getLCOMMDirective() << name << "," << Size;
SwitchToDataSection("\t.data", I);
O << ".comm " << name << "," << Size;
}
- O << "\t\t" << TAI->getCommentString() << " '" << I->getName() << "'\n";
+ O << "\t\t" << TAI->getCommentString() << " '";
+ PrintUnmangledNameSafely(I, O);
+ O << "'\n";
} else {
switch (I->getLinkage()) {
case GlobalValue::LinkOnceLinkage:
+ ",\"aw\",@progbits";
SwitchToDataSection(SectionName.c_str());
} else {
- SwitchToDataSection(TAI->getDataSection(), I);
+ if (I->isConstant() && TAI->getReadOnlySection())
+ SwitchToDataSection(TAI->getReadOnlySection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
}
break;
default:
}
EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " '"
- << I->getName() << "'\n";
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " '";
+ PrintUnmangledNameSafely(I, O);
+ O << "'\n";
// If the initializer is a extern weak symbol, remember to emit the weak
// reference!
// Emit initial debug information.
DW.EndModule();
- AsmPrinter::doFinalization(M);
- return false; // success
+ return AsmPrinter::doFinalization(M);
}
std::string LinuxAsmPrinter::getSectionForFunction(const Function &F) const {
case Function::InternalLinkage: return TAI->getTextSection();
case Function::WeakLinkage:
case Function::LinkOnceLinkage:
- return ".section __TEXT,__textcoal_nt,coalesced,pure_instructions";
+ return "\t.section __TEXT,__textcoal_nt,coalesced,pure_instructions";
}
}
/// method to print assembly for each instruction.
///
bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
- DW.SetModuleInfo(&getAnalysis<MachineModuleInfo>());
+ // We need this for Personality functions.
+ MMI = &getAnalysis<MachineModuleInfo>();
+ DW.SetModuleInfo(MMI);
SetupMachineFunction(MF);
O << "\n\n";
-
+
// Print out constants referenced by the function
EmitConstantPool(MF.getConstantPool());
if (const char *Directive = TAI->getHiddenDirective())
O << Directive << CurrentFnName << "\n";
- EmitAlignment(4, F);
+ EmitAlignment(OptimizeForSize ? 2 : 4, F);
O << CurrentFnName << ":\n";
// Emit pre-function debug information.
DW.BeginFunction(&MF);
+ // If the function is empty, then we need to emit *something*. Otherwise, the
+ // function's label might be associated with something that it wasn't meant to
+ // be associated with. We emit a noop in this situation.
+ MachineFunction::iterator I = MF.begin();
+
+ if (++I == MF.end() && MF.front().empty())
+ O << "\tnop\n";
+
// Print out code for the function.
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {
// Print a label for the basic block.
if (I != MF.begin()) {
- printBasicBlockLabel(I, true);
+ printBasicBlockLabel(I, true, true);
O << '\n';
}
- for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
- II != E; ++II) {
+ for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
+ II != IE; ++II) {
// Print the assembly for the instruction.
- O << "\t";
printMachineInstruction(II);
}
}
bool DarwinAsmPrinter::doInitialization(Module &M) {
- static const char *CPUDirectives[] = {
+ static const char *const CPUDirectives[] = {
+ "",
"ppc",
"ppc601",
"ppc602",
assert(Directive <= PPC::DIR_64 && "Directive out of range.");
O << "\t.machine " << CPUDirectives[Directive] << "\n";
- AsmPrinter::doInitialization(M);
+ bool Result = AsmPrinter::doInitialization(M);
// Darwin wants symbols to be quoted if they have complex names.
Mang->setUseQuotes(true);
// Prime text sections so they are adjacent. This reduces the likelihood a
// large data or debug section causes a branch to exceed 16M limit.
- SwitchToTextSection(".section __TEXT,__textcoal_nt,coalesced,"
+ SwitchToTextSection("\t.section __TEXT,__textcoal_nt,coalesced,"
"pure_instructions");
if (TM.getRelocationModel() == Reloc::PIC_) {
- SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ SwitchToTextSection("\t.section __TEXT,__picsymbolstub1,symbol_stubs,"
"pure_instructions,32");
} else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) {
- SwitchToTextSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ SwitchToTextSection("\t.section __TEXT,__symbol_stub1,symbol_stubs,"
"pure_instructions,16");
}
SwitchToTextSection(TAI->getTextSection());
// Emit initial debug information.
DW.BeginModule(&M);
- return false;
+ return Result;
}
bool DarwinAsmPrinter::doFinalization(Module &M) {
O << Directive << name << "\n";
Constant *C = I->getInitializer();
- unsigned Size = TD->getTypeSize(C->getType());
+ const Type *Type = C->getType();
+ unsigned Size = TD->getABITypeSize(Type);
unsigned Align = TD->getPreferredAlignmentLog(I);
if (C->isNullValue() && /* FIXME: Verify correct */
+ !I->hasSection() &&
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage() ||
- (I->hasExternalLinkage() && !I->hasSection()))) {
+ I->hasLinkOnceLinkage() || I->hasExternalLinkage())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (I->hasExternalLinkage()) {
O << "\t.globl " << name << '\n';
} else {
SwitchToDataSection("\t.data", I);
O << ".comm " << name << "," << Size;
+ // Darwin 9 and above support aligned common data.
+ if (Subtarget.isDarwin9())
+ O << "," << Align;
}
- O << "\t\t" << TAI->getCommentString() << " '" << I->getName() << "'\n";
+ O << "\t\t" << TAI->getCommentString() << " '";
+ PrintUnmangledNameSafely(I, O);
+ O << "'\n";
} else {
switch (I->getLinkage()) {
case GlobalValue::LinkOnceLinkage:
case GlobalValue::WeakLinkage:
O << "\t.globl " << name << '\n'
<< "\t.weak_definition " << name << '\n';
- SwitchToDataSection(".section __DATA,__datacoal_nt,coalesced", I);
+ SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
break;
case GlobalValue::AppendingLinkage:
// FIXME: appending linkage variables should go into a section of
break;
}
}
-
- SwitchToDataSection("\t.data", I);
+ if (I->hasSection()) {
+ // Honor all section names on Darwin; ObjC uses this
+ std::string SectionName = ".section " + I->getSection();
+ SwitchToDataSection(SectionName.c_str());
+ } else if (!I->isConstant())
+ SwitchToDataSection(TAI->getDataSection(), I);
+ else {
+ // Read-only data.
+ bool HasReloc = C->ContainsRelocations();
+ if (HasReloc &&
+ TM.getRelocationModel() != Reloc::Static)
+ SwitchToDataSection("\t.const_data\n");
+ else if (!HasReloc && Size == 4 &&
+ TAI->getFourByteConstantSection())
+ SwitchToDataSection(TAI->getFourByteConstantSection(), I);
+ else if (!HasReloc && Size == 8 &&
+ TAI->getEightByteConstantSection())
+ SwitchToDataSection(TAI->getEightByteConstantSection(), I);
+ else if (!HasReloc && Size == 16 &&
+ TAI->getSixteenByteConstantSection())
+ SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
+ else if (TAI->getReadOnlySection())
+ SwitchToDataSection(TAI->getReadOnlySection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
+ }
break;
default:
cerr << "Unknown linkage type!";
}
EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " '"
- << I->getName() << "'\n";
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " '";
+ PrintUnmangledNameSafely(I, O);
+ O << "'\n";
// If the initializer is a extern weak symbol, remember to emit the weak
// reference!
if (TM.getRelocationModel() == Reloc::PIC_) {
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i) {
- SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ SwitchToTextSection("\t.section __TEXT,__picsymbolstub1,symbol_stubs,"
"pure_instructions,32");
EmitAlignment(4);
O << "L" << *i << "$stub:\n";
} else {
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i) {
- SwitchToTextSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ SwitchToTextSection("\t.section __TEXT,__symbol_stub1,symbol_stubs,"
"pure_instructions,16");
EmitAlignment(4);
O << "L" << *i << "$stub:\n";
O << "\n";
+ if (ExceptionHandling && TAI->doesSupportExceptionHandling() && MMI) {
+ // Add the (possibly multiple) personalities to the set of global values.
+ const std::vector<Function *>& Personalities = MMI->getPersonalities();
+
+ for (std::vector<Function *>::const_iterator I = Personalities.begin(),
+ E = Personalities.end(); I != E; ++I)
+ if (*I) GVStubs.insert("_" + (*I)->getName());
+ }
+
// Output stubs for external and common global variables.
- if (GVStubs.begin() != GVStubs.end()) {
+ if (!GVStubs.empty()) {
SwitchToDataSection(".non_lazy_symbol_pointer");
for (std::set<std::string>::iterator I = GVStubs.begin(),
E = GVStubs.end(); I != E; ++I) {
// code that does this, it is always safe to set.
O << "\t.subsections_via_symbols\n";
- AsmPrinter::doFinalization(M);
- return false; // success
+ return AsmPrinter::doFinalization(M);
}
projects / oota-llvm.git / blobdiff