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Move actual section printing stuff to AsmPrinter from TAI reducing heap traffic.

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llvm-svn: 56573
This commit is contained in:
Anton Korobeynikov 2008-09-24 22:14:23 +00:00
parent 9e5d24042c
commit c7ac49c632
11 changed files with 33 additions and 37 deletions
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3
include/llvm/Target/TargetAsmInfo.h
View File

@ -113,6 +113,7 @@ namespace llvm {
public:
bool isNamed() const { return Flags & SectionFlags::Named; }
unsigned getEntitySize() const { return (Flags >> 24) & 0xFF; }
const std::string& getName() const { return Name; }
unsigned getFlags() const { return Flags; }
};
@ -573,7 +574,7 @@ namespace llvm {
/// SectionForGlobal - This hooks returns proper section name for given
/// global with all necessary flags and marks.
virtual std::string SectionForGlobal(const GlobalValue *GV) const;
virtual const Section* SectionForGlobal(const GlobalValue *GV) const;
// Helper methods for SectionForGlobal
virtual std::string UniqueSectionForGlobal(const GlobalValue* GV,

16
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -115,8 +115,18 @@ void AsmPrinter::SwitchToSection(const Section* NS) {
// FIXME: Make CurrentSection a Section* in the future
CurrentSection = NewSection;
if (!CurrentSection.empty())
O << CurrentSection << TAI->getDataSectionStartSuffix() << '\n';
if (!CurrentSection.empty()) {
// If section is named we need to switch into it via special '.section'
// directive and also append funky flags. Otherwise - section name is just
// some magic assembler directive.
if (NS->isNamed())
O << TAI->getSwitchToSectionDirective()
<< CurrentSection
<< TAI->getSectionFlags(NS->getFlags());
else
O << CurrentSection;
O << TAI->getDataSectionStartSuffix() << '\n';
}
IsInTextSection = (NS->getFlags() & SectionFlags::Code);
}
@ -326,7 +336,7 @@ void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
// function body itself, otherwise the label differences won't make sense.
// We should also do if the section name is NULL or function is declared in
// discardable section.
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
} else {
SwitchToDataSection(JumpTableDataSection);
}

3
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
View File

@ -846,7 +846,6 @@ void ARMAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
return;
}
std::string SectionName = TAI->SectionForGlobal(GVar);
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
const Type *Type = C->getType();
@ -858,7 +857,7 @@ void ARMAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
if (Subtarget->isTargetELF())
O << "\t.type " << name << ",%object\n";
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && !GVar->hasSection() && !GVar->isThreadLocal()) {
// FIXME: This seems to be pretty darwin-specific

5
lib/Target/Alpha/AlphaAsmPrinter.cpp
View File

@ -149,7 +149,7 @@ bool AlphaAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Print out labels for the function.
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
EmitAlignment(4, F);
switch (F->getLinkage()) {
@ -214,14 +214,13 @@ void AlphaAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
if (EmitSpecialLLVMGlobal(GVar))
return;
std::string SectionName = TAI->SectionForGlobal(GVar);
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
unsigned Size = TD->getABITypeSize(C->getType());
unsigned Align = TD->getPreferredAlignmentLog(GVar);
// 0: Switch to section
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
// 1: Check visibility
printVisibility(name, GVar->getVisibility());

2
lib/Target/CellSPU/SPUAsmPrinter.cpp
View File

@ -418,7 +418,7 @@ LinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF)
// Print out labels for the function.
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
EmitAlignment(3, F);
switch (F->getLinkage()) {

5
lib/Target/IA64/IA64AsmPrinter.cpp
View File

@ -130,7 +130,7 @@ bool IA64AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
EmitConstantPool(MF.getConstantPool());
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
// Print out labels for the function.
EmitAlignment(5);
@ -264,7 +264,6 @@ void IA64AsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
return;
O << "\n\n";
std::string SectionName = TAI->SectionForGlobal(GVar);
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
unsigned Size = TD->getABITypeSize(C->getType());
@ -272,7 +271,7 @@ void IA64AsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
printVisibility(name, GVar->getVisibility());
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && !GVar->hasSection()) {
if (!GVar->isThreadLocal() &&

5
lib/Target/Mips/MipsAsmPrinter.cpp
View File

@ -224,7 +224,7 @@ emitFunctionStart(MachineFunction &MF)
{
// Print out the label for the function.
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str());
SwitchToSection(TAI->SectionForGlobal(F));
// 2 bits aligned
EmitAlignment(2, F);
@ -479,7 +479,6 @@ printModuleLevelGV(const GlobalVariable* GVar) {
return;
O << "\n\n";
std::string SectionName = TAI->SectionForGlobal(GVar);
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
const Type *CTy = C->getType();
@ -501,7 +500,7 @@ printModuleLevelGV(const GlobalVariable* GVar) {
printVisibility(name, GVar->getVisibility());
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && !GVar->hasSection()) {
if (!GVar->isThreadLocal() &&

10
lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
View File

@ -571,7 +571,7 @@ bool PPCLinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Print out labels for the function.
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
switch (F->getLinkage()) {
default: assert(0 && "Unknown linkage type!");
@ -662,7 +662,6 @@ void PPCLinuxAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
return;
std::string name = Mang->getValueName(GVar);
std::string SectionName = TAI->SectionForGlobal(GVar);
printVisibility(name, GVar->getVisibility());
@ -671,7 +670,7 @@ void PPCLinuxAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
unsigned Size = TD->getABITypeSize(Type);
unsigned Align = TD->getPreferredAlignmentLog(GVar);
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && /* FIXME: Verify correct */
!GVar->hasSection() &&
@ -759,7 +758,7 @@ bool PPCDarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Print out labels for the function.
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
switch (F->getLinkage()) {
default: assert(0 && "Unknown linkage type!");
@ -888,7 +887,6 @@ void PPCDarwinAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
}
std::string name = Mang->getValueName(GVar);
std::string SectionName = TAI->SectionForGlobal(GVar);
printVisibility(name, GVar->getVisibility());
@ -897,7 +895,7 @@ void PPCDarwinAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
unsigned Size = TD->getABITypeSize(Type);
unsigned Align = TD->getPreferredAlignmentLog(GVar);
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && /* FIXME: Verify correct */
!GVar->hasSection() &&

5
lib/Target/Sparc/SparcAsmPrinter.cpp
View File

@ -99,7 +99,7 @@ bool SparcAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Print out the label for the function.
const Function *F = MF.getFunction();
SwitchToTextSection(TAI->SectionForGlobal(F).c_str(), F);
SwitchToSection(TAI->SectionForGlobal(F));
EmitAlignment(4, F);
O << "\t.globl\t" << CurrentFnName << '\n';
@ -242,7 +242,6 @@ void SparcAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
return;
O << "\n\n";
std::string SectionName = TAI->SectionForGlobal(GVar);
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
unsigned Size = TD->getABITypeSize(C->getType());
@ -250,7 +249,7 @@ void SparcAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
printVisibility(name, GVar->getVisibility());
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && !GVar->hasSection()) {
if (!GVar->isThreadLocal() &&

10
lib/Target/TargetAsmInfo.cpp
View File

@ -272,7 +272,7 @@ TargetAsmInfo::SectionFlagsForGlobal(const GlobalValue *GV,
return Flags;
}
std::string
const Section*
TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
const Section* S;
// Select section name
@ -286,13 +286,7 @@ TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
S = SelectSectionForGlobal(GV);
}
if (!S->isNamed())
return S->Name;
// If section is named we need to switch into it via special '.section'
// directive and also append funky flags. Otherwise - section name is just
// some magic assembler directive.
return getSwitchToSectionDirective() + S->Name + getSectionFlags(S->Flags);
return S;
}
// Lame default implementation. Calculate the section name for global.

6
lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
View File

@ -148,11 +148,10 @@ void X86ATTAsmPrinter::decorateName(std::string &Name,
void X86ATTAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
const Function *F = MF.getFunction();
std::string SectionName = TAI->SectionForGlobal(F);
decorateName(CurrentFnName, F);
SwitchToTextSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(F));
unsigned FnAlign = OptimizeForSize ? 1 : 4;
if (!F->isDeclaration() && F->hasNote(FnAttr::OptimizeForSize))
@ -766,7 +765,6 @@ void X86ATTAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
return;
}
std::string SectionName = TAI->SectionForGlobal(GVar);
std::string name = Mang->getValueName(GVar);
Constant *C = GVar->getInitializer();
const Type *Type = C->getType();
@ -778,7 +776,7 @@ void X86ATTAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
if (Subtarget->isTargetELF())
O << "\t.type\t" << name << ",@object\n";
SwitchToDataSection(SectionName.c_str());
SwitchToSection(TAI->SectionForGlobal(GVar));
if (C->isNullValue() && !GVar->hasSection()) {
// FIXME: This seems to be pretty darwin-specific