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Restructure code a bit to make use of continue (simplifying things). Generalize

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the .zerofill directive emission to not be darwin-specific.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33365 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-01-19 19:25:36 +00:00
parent e433ea9dce
commit 5be54b00bd
1 changed files with 87 additions and 64 deletions
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91
lib/Target/ARM/ARMAsmPrinter.cpp
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@ -29,6 +29,7 @@
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Compiler.h"
@ -159,7 +160,7 @@ FunctionPass *llvm::createARMCodePrinterPass(std::ostream &o,
bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
AFI = MF.getInfo<ARMFunctionInfo>();
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
DW.SetDebugInfo(&getAnalysis<MachineDebugInfo>());
}
@ -183,7 +184,7 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
break;
case Function::WeakLinkage:
case Function::LinkOnceLinkage:
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
SwitchToTextSection(
".section __TEXT,__textcoal_nt,coalesced,pure_instructions", F);
O << "\t.globl\t" << CurrentFnName << "\n";
@ -203,7 +204,7 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
EmitAlignment(2, F);
O << CurrentFnName << ":\n";
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
// Emit pre-function debug information.
DW.BeginFunction(&MF);
}
@ -226,7 +227,7 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
if (TAI->hasDotTypeDotSizeDirective())
O << "\t.size " << CurrentFnName << ", .-" << CurrentFnName << "\n";
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
// Emit post-function debug information.
DW.EndFunction();
}
@ -260,7 +261,7 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
std::string Name = Mang->getValueName(GV);
bool isExt = (GV->isExternal() || GV->hasWeakLinkage() ||
GV->hasLinkOnceLinkage());
if (isExt && isCallOp && Subtarget->isDarwin() &&
if (isExt && isCallOp && Subtarget->isTargetDarwin() &&
TM.getRelocationModel() != Reloc::Static) {
O << TAI->getPrivateGlobalPrefix() << Name << "$stub";
FnStubs.insert(Name);
@ -275,7 +276,7 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
bool isCallOp = Modifier && !strcmp(Modifier, "call");
std::string Name(TAI->getGlobalPrefix());
Name += MO.getSymbolName();
if (isCallOp && Subtarget->isDarwin() &&
if (isCallOp && Subtarget->isTargetDarwin() &&
TM.getRelocationModel() != Reloc::Static) {
O << TAI->getPrivateGlobalPrefix() << Name << "$stub";
FnStubs.insert(Name);
@ -688,7 +689,7 @@ void ARMAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
}
bool ARMAsmPrinter::doInitialization(Module &M) {
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
// Emit initial debug information.
DW.BeginModule(&M);
}
@ -712,22 +713,34 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
unsigned Size = TD->getTypeSize(C->getType());
unsigned Align = TD->getPreferredAlignmentLog(I);
if (C->isNullValue() &&
!I->hasSection() &&
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
I->hasLinkOnceLinkage() ||
(Subtarget->isDarwin() && I->hasExternalLinkage()))) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (I->hasHiddenVisibility())
if (const char *Directive = TAI->getHiddenDirective())
O << Directive << name << "\n";
if (Subtarget->isTargetELF())
O << "\t.type " << name << ",@object\n";
if (C->isNullValue()) {
if (I->hasExternalLinkage()) {
if (const char *Directive = TAI->getZeroFillDirective()) {
O << "\t.globl\t" << name << "\n";
O << "\t.zerofill __DATA__, __common, " << name << ", "
<< Size << ", " << Align;
} else {
O << Directive << "__DATA__, __common, " << name << ", "
<< Size << ", " << Align << "\n";
continue;
}
}
if (!I->hasSection() &&
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
I->hasLinkOnceLinkage())) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (!NoZerosInBSS && TAI->getBSSSection())
SwitchToDataSection(TAI->getBSSSection(), I);
else
SwitchToDataSection(TAI->getDataSection(), I);
if (TAI->getLCOMMDirective() != NULL) {
if (I->hasInternalLinkage()) {
O << TAI->getLCOMMDirective() << name << "," << Size;
if (Subtarget->isDarwin())
if (Subtarget->isTargetDarwin())
O << "," << Align;
} else
O << TAI->getCOMMDirective() << name << "," << Size;
@ -738,29 +751,33 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
if (TAI->getCOMMDirectiveTakesAlignment())
O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
}
}
O << "\t\t" << TAI->getCommentString() << " " << I->getName() << "\n";
continue;
} else {
}
}
switch (I->getLinkage()) {
default:
assert(0 && "Unknown linkage type!");
break;
case GlobalValue::LinkOnceLinkage:
case GlobalValue::WeakLinkage:
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
O << "\t.globl " << name << "\n"
<< "\t.weak_definition " << name << "\n";
SwitchToDataSection("\t.section __DATA,__const_coal,coalesced", I);
} else {
O << "\t.section\t.llvm.linkonce.d." << name << ",\"aw\",%progbits\n"
<< "\t.weak " << name << "\n";
std::string SectionName("\t.section\t.llvm.linkonce.d." +
name +
",\"aw\",%progbits");
SwitchToDataSection(SectionName.c_str(), I);
O << "\t.weak " << name << "\n";
}
break;
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:
O << "\t.globl " << name << "\n";
// FALL THROUGH
case GlobalValue::InternalLinkage:
case GlobalValue::InternalLinkage: {
if (I->isConstant()) {
const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
if (TAI->getCStringSection() && CVA && CVA->isCString()) {
@ -768,29 +785,33 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
break;
}
}
// FIXME: special handling for ".ctors" & ".dtors" sections
if (I->hasSection() &&
(I->getSection() == ".ctors" ||
I->getSection() == ".dtors")) {
assert(!Subtarget->isDarwin());
assert(!Subtarget->isTargetDarwin());
std::string SectionName = ".section " + I->getSection();
SectionName += ",\"aw\",%progbits";
SwitchToDataSection(SectionName.c_str());
} else {
if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
SwitchToDataSection(TAI->getBSSSection(), I);
else
SwitchToDataSection(TAI->getDataSection(), I);
}
break;
}
default:
assert(0 && "Unknown linkage type!");
break;
}
EmitAlignment(Align, I);
if (TAI->hasDotTypeDotSizeDirective()) {
O << "\t.type " << name << ", %object\n";
O << name << ":\t\t\t\t" << TAI->getCommentString() << " " << I->getName()
<< "\n";
if (TAI->hasDotTypeDotSizeDirective())
O << "\t.size " << name << ", " << Size << "\n";
}
O << name << ":\n";
// If the initializer is a extern weak symbol, remember to emit the weak
// reference!
if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
@ -801,7 +822,9 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
O << '\n';
}
if (Subtarget->isDarwin()) {
if (Subtarget->isTargetDarwin()) {
SwitchToDataSection("");
// Output stubs for dynamically-linked functions
unsigned j = 1;
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();