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Emit the auto variables of a function into a different section than parameters. 

llvm-svn: 69605
This commit is contained in:
Sanjiv Gupta 2009-04-20 16:59:35 +00:00
parent f7db87f2dc
commit 0fcc019d36
3 changed files with 47 additions and 25 deletions
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62
llvm/lib/Target/PIC16/PIC16AsmPrinter.cpp
View File

@ -67,7 +67,7 @@ bool PIC16AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
else {
// External Symbol is generated for temp data. Temp data in in
// fdata.<functionname>.# section.
NewBank = "fdata." + CurrentFnName +".#";
NewBank = "fpdata." + CurrentFnName +".#";
}
// Operand after global address or external symbol should be banksel.
// Value 1 for this operand means we need to generate banksel else do not
@ -117,8 +117,8 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Emit the frame address of the function at the beginning of code.
O << CurrentFnName << ":\n";
O << " retlw low(" << CurrentFnName << ".frame)\n";
O << " retlw high(" << CurrentFnName << ".frame)\n";
O << " retlw low(" << FunctionLabelBegin<< CurrentFnName << ".frame)\n";
O << " retlw high(" << FunctionLabelBegin<< CurrentFnName << ".frame)\n";
// Print out code for the function.
@ -178,14 +178,22 @@ void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
O << (int)MO.getImm();
return;
case MachineOperand::MO_GlobalAddress:
case MachineOperand::MO_GlobalAddress: {
std::string Name = Mang->getValueName(MO.getGlobal());
if (isLocalName(Name))
O << FunctionLabelBegin << Mang->getValueName(MO.getGlobal());
else
O << Mang->getValueName(MO.getGlobal());
break;
case MachineOperand::MO_ExternalSymbol:
}
case MachineOperand::MO_ExternalSymbol: {
std::string Name = MO.getSymbolName();
if (Name.find("__intrinsics.") != std::string::npos)
O << MO.getSymbolName();
else
O << FunctionLabelBegin << MO.getSymbolName();
break;
}
case MachineOperand::MO_MachineBasicBlock:
printBasicBlockLabel(MO.getMBB());
return;
@ -234,13 +242,13 @@ void PIC16AsmPrinter::EmitExternsAndGlobals (Module &M) {
if (I->isDeclaration()) {
O << "\textern " <<Name << "\n";
O << "\textern " << Name << ".retval\n";
O << "\textern " << Name << ".args\n";
O << "\textern " << FunctionLabelBegin << Name << ".retval\n";
O << "\textern " << FunctionLabelBegin << Name << ".args\n";
}
else if (I->hasExternalLinkage()) {
O << "\tglobal " << Name << "\n";
O << "\tglobal " << Name << ".retval\n";
O << "\tglobal " << Name << ".args\n";
O << "\tglobal " << FunctionLabelBegin << Name << ".retval\n";
O << "\tglobal " << FunctionLabelBegin<< Name << ".args\n";
}
}
@ -371,15 +379,16 @@ void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
unsigned FrameSize = 0;
// Emit the data section name.
O << "\n";
std::string SectionName = "fdata." + CurrentFnName + ".# " + "UDATA";
std::string SectionName = "fpdata." + CurrentFnName + ".# " + "UDATA_OVR";
const Section *fDataSection = TAI->getNamedSection(SectionName.c_str(),
const Section *fPDataSection = TAI->getNamedSection(SectionName.c_str(),
SectionFlags::Writeable);
SwitchToSection(fDataSection);
SwitchToSection(fPDataSection);
// Emit function frame label
O << CurrentFnName << ".frame:\n";
char ch;
O << FunctionLabelBegin << CurrentFnName << ".frame:\n";
const Type *RetType = F->getReturnType();
unsigned RetSize = 0;
@ -388,9 +397,10 @@ void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
//Emit function return value space
if(RetSize > 0)
O << CurrentFnName << ".retval RES " << RetSize << "\n";
O << FunctionLabelBegin << CurrentFnName << ".retval RES " << RetSize
<< "\n";
else
O << CurrentFnName << ".retval:\n";
O << FunctionLabelBegin << CurrentFnName << ".retval:\n";
// Emit variable to hold the space for function arguments
unsigned ArgSize = 0;
@ -399,12 +409,22 @@ void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
const Type *Ty = argi->getType();
ArgSize += TD->getTypePaddedSize(Ty);
}
O << CurrentFnName << ".args RES " << ArgSize << "\n";
O << FunctionLabelBegin << CurrentFnName << ".args RES " << ArgSize
<< "\n";
// Emit temporary space
int TempSize = PTLI->GetTmpSize();
if (TempSize > 0 )
O << CurrentFnName << ".tmp RES " << TempSize <<"\n";
O << FunctionLabelBegin << CurrentFnName << ".tmp RES " << TempSize
<<"\n";
// Emit the section name for local variables.
O << "\n";
std::string SecNameLocals = "fadata." + CurrentFnName + ".# " + "UDATA_OVR";
const Section *fADataSection = TAI->getNamedSection(SecNameLocals.c_str(),
SectionFlags::Writeable);
SwitchToSection(fADataSection);
// Emit the function variables.
@ -424,13 +444,13 @@ void PIC16AsmPrinter::emitFunctionData(MachineFunction &MF) {
if (! isLocalToFunc(FuncName, VarName))
continue;
I->setSection("fdata." + CurrentFnName + ".#");
I->setSection("fadata." + CurrentFnName + ".#");
Constant *C = I->getInitializer();
const Type *Ty = C->getType();
unsigned Size = TD->getTypePaddedSize(Ty);
FrameSize += Size;
// Emit memory reserve directive.
O << VarName << " RES " << Size << "\n";
O << FunctionLabelBegin << VarName << " RES " << Size << "\n";
}
}

2
llvm/lib/Target/PIC16/PIC16AsmPrinter.h
View File

@ -28,6 +28,7 @@ namespace llvm {
const TargetAsmInfo *T, bool F, bool V)
: AsmPrinter(O, TM, T, F, V) {
CurBank = "";
FunctionLabelBegin = '@';
IsRomData = false;
PTLI = TM.getTargetLowering();
}
@ -55,6 +56,7 @@ namespace llvm {
PIC16TargetLowering *PTLI;
std::string CurBank;
bool IsRomData;
char FunctionLabelBegin;
};
} // end of namespace

2
llvm/tools/Makefile
View File

@ -20,7 +20,7 @@ PARALLEL_DIRS := opt llvm-as llvm-dis \
llc llvm-ranlib llvm-ar llvm-nm \
llvm-ld llvm-prof llvm-link \
lli gccas gccld llvm-extract llvm-db \
bugpoint llvm-bcanalyzer llvm-stub llvmc
bugpoint llvm-bcanalyzer llvm-stub llvmc clang
include $(LEVEL)/Makefile.config