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Implement getSectionForFunction, use it when printing function body.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30737 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-10-05 02:43:52 +00:00
parent 52f0670470
commit afbfdeddff
6 changed files with 42 additions and 16 deletions
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34
lib/Target/X86/X86ATTAsmPrinter.cpp
View File

@ -26,6 +26,28 @@
#include <iostream>
using namespace llvm;
/// getSectionForFunction - Return the section that we should emit the
/// specified function body into.
std::string X86ATTAsmPrinter::getSectionForFunction(const Function &F) const {
switch (F.getLinkage()) {
default: assert(0 && "Unknown linkage type!");
case Function::InternalLinkage:
case Function::DLLExportLinkage:
case Function::ExternalLinkage:
return TAI->getTextSection();
case Function::WeakLinkage:
case Function::LinkOnceLinkage:
if (Subtarget->isTargetDarwin()) {
return ".section __TEXT,__textcoal_nt,coalesced,pure_instructions";
} else if (Subtarget->isTargetCygwin()) {
return "\t.section\t.llvm.linkonce.t." + CurrentFnName + ",\"ax\"\n";
} else {
return "\t.section\t.llvm.linkonce.t." + CurrentFnName +
",\"ax\",@progbits\n";
}
}
}
/// runOnMachineFunction - This uses the printMachineInstruction()
/// method to print assembly for each instruction.
///
@ -53,38 +75,30 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
X86SharedAsmPrinter::decorateName(CurrentFnName, F);
SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
switch (F->getLinkage()) {
default: assert(0 && "Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
SwitchToTextSection(TAI->getTextSection(), F);
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
break;
case Function::DLLExportLinkage:
DLLExportedFns.insert(Mang->makeNameProper(F->getName(), ""));
//FALLS THROUGH
case Function::ExternalLinkage:
SwitchToTextSection(TAI->getTextSection(), F);
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
O << "\t.globl\t" << CurrentFnName << "\n";
break;
case Function::WeakLinkage:
case Function::LinkOnceLinkage:
if (Subtarget->isTargetDarwin()) {
SwitchToTextSection(
".section __TEXT,__textcoal_nt,coalesced,pure_instructions", F);
O << "\t.globl\t" << CurrentFnName << "\n";
O << "\t.weak_definition\t" << CurrentFnName << "\n";
} else if (Subtarget->isTargetCygwin()) {
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
O << "\t.section\t.llvm.linkonce.t." << CurrentFnName
<< ",\"ax\"\n";
SwitchToTextSection("", F);
O << "\t.weak " << CurrentFnName << "\n";
} else {
EmitAlignment(4, F); // FIXME: This should be parameterized somewhere.
O << "\t.section\t.llvm.linkonce.t." << CurrentFnName
<< ",\"ax\",@progbits\n";
SwitchToTextSection("", F);
O << "\t.weak " << CurrentFnName << "\n";
}
break;

4
lib/Target/X86/X86ATTAsmPrinter.h
View File

@ -76,6 +76,10 @@ struct X86ATTAsmPrinter : public X86SharedAsmPrinter {
const char *Modifier=NULL);
void printPICLabel(const MachineInstr *MI, unsigned Op);
bool runOnMachineFunction(MachineFunction &F);
/// getSectionForFunction - Return the section that we should emit the
/// specified function body into.
virtual std::string getSectionForFunction(const Function &F) const;
};
} // end namespace llvm

9
lib/Target/X86/X86IntelAsmPrinter.cpp
View File

@ -25,6 +25,11 @@
#include "llvm/Target/TargetOptions.h"
using namespace llvm;
std::string X86IntelAsmPrinter::getSectionForFunction(const Function &F) const {
// Intel asm always emits functions to _text.
return "_text";
}
/// runOnMachineFunction - This uses the printMachineInstruction()
/// method to print assembly for each instruction.
///
@ -46,10 +51,11 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
X86SharedAsmPrinter::decorateName(CurrentFnName, F);
SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
switch (F->getLinkage()) {
default: assert(0 && "Unsupported linkage type!");
case Function::InternalLinkage:
SwitchToTextSection("_text", F);
EmitAlignment(4);
break;
case Function::DLLExportLinkage:
@ -57,7 +63,6 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
//FALLS THROUGH
case Function::ExternalLinkage:
O << "\tpublic " << CurrentFnName << "\n";
SwitchToTextSection("_text", F);
EmitAlignment(4);
break;
}

4
lib/Target/X86/X86IntelAsmPrinter.h
View File

@ -99,6 +99,10 @@ struct X86IntelAsmPrinter : public X86SharedAsmPrinter {
bool runOnMachineFunction(MachineFunction &F);
bool doInitialization(Module &M);
bool doFinalization(Module &M);
/// getSectionForFunction - Return the section that we should emit the
/// specified function body into.
virtual std::string getSectionForFunction(const Function &F) const;
virtual void EmitString(const ConstantArray *CVA) const;
};

5
lib/Target/X86/X86TargetAsmInfo.cpp
View File

@ -20,7 +20,7 @@ using namespace llvm;
X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
//FIXME - Should to be simplified.
// FIXME - Should be simplified.
switch (Subtarget->TargetType) {
case X86Subtarget::isDarwin:
@ -31,7 +31,7 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
PrivateGlobalPrefix = "L"; // Marker for constant pool idxs
ConstantPoolSection = "\t.const\n";
JumpTableDataSection = "\t.const\n"; // FIXME: depends on PIC mode
JumpTableDataSection = "\t.const\n";
FourByteConstantSection = "\t.literal4\n";
EightByteConstantSection = "\t.literal8\n";
if (Subtarget->is64Bit())
@ -97,3 +97,4 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
SectionEndDirectiveSuffix = "\tends\n";
}
}

2
lib/Target/X86/X86TargetAsmInfo.h
View File

@ -24,8 +24,6 @@ namespace llvm {
struct X86TargetAsmInfo : public TargetAsmInfo {
X86TargetAsmInfo(const X86TargetMachine &TM);
};
} // namespace llvm
#endif