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Switch IA64 to new section-handling stuff
llvm-svn: 54453
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parent
9d8232ec1d
commit
2755fabf07
lib/Target/IA64
@ -109,6 +109,7 @@ namespace {
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void printMachineInstruction(const MachineInstr *MI);
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void printOp(const MachineOperand &MO, bool isBRCALLinsn= false);
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void printModuleLevelGV(const GlobalVariable* GVar);
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bool runOnMachineFunction(MachineFunction &F);
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bool doInitialization(Module &M);
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bool doFinalization(Module &M);
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@ -256,78 +257,92 @@ bool IA64AsmPrinter::doInitialization(Module &M) {
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return Result;
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}
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bool IA64AsmPrinter::doFinalization(Module &M) {
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void IA64AsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
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const TargetData *TD = TM.getTargetData();
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if (!GVar->hasInitializer())
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return; // External global require no code
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// Check to see if this is a special global used by LLVM, if so, emit it.
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if (EmitSpecialLLVMGlobal(GVar))
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return;
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O << "\n\n";
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std::string SectionName = TAI->SectionForGlobal(GVar);
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std::string name = Mang->getValueName(GVar);
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Constant *C = GVar->getInitializer();
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unsigned Size = TD->getABITypeSize(C->getType());
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unsigned Align = TD->getPreferredAlignmentLog(GVar);
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// FIXME: ELF supports visibility
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SwitchToDataSection(SectionName.c_str());
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if (C->isNullValue() && !GVar->hasSection()) {
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if (!GVar->isThreadLocal() &&
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(GVar->hasInternalLinkage() || GVar->isWeakForLinker())) {
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if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
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if (GVar->hasInternalLinkage()) {
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O << "\t.lcomm " << name << "#," << Size
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<< "," << (1 << Align);
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O << "\n";
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} else {
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O << "\t.common " << name << "#," << Size
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<< "," << (1 << Align);
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O << "\n";
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}
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return;
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}
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}
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switch (GVar->getLinkage()) {
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case GlobalValue::LinkOnceLinkage:
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case GlobalValue::CommonLinkage:
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case GlobalValue::WeakLinkage:
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// Nonnull linkonce -> weak
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O << "\t.weak " << name << "\n";
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break;
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case GlobalValue::AppendingLinkage:
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// FIXME: appending linkage variables should go into a section of
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// their name or something. For now, just emit them as external.
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case GlobalValue::ExternalLinkage:
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// If external or appending, declare as a global symbol
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O << TAI->getGlobalDirective() << name << "\n";
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// FALL THROUGH
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case GlobalValue::InternalLinkage:
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break;
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case GlobalValue::GhostLinkage:
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cerr << "GhostLinkage cannot appear in IA64AsmPrinter!\n";
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abort();
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case GlobalValue::DLLImportLinkage:
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cerr << "DLLImport linkage is not supported by this target!\n";
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abort();
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case GlobalValue::DLLExportLinkage:
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cerr << "DLLExport linkage is not supported by this target!\n";
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abort();
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default:
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assert(0 && "Unknown linkage type!");
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}
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EmitAlignment(Align);
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if (TAI->hasDotTypeDotSizeDirective()) {
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O << "\t.type " << name << ",@object\n";
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O << "\t.size " << name << "," << Size << "\n";
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}
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O << name << ":\t\t\t\t// " << *C << "\n";
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EmitGlobalConstant(C);
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}
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bool IA64AsmPrinter::doFinalization(Module &M) {
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// Print out module-level global variables here.
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for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
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I != E; ++I)
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if (I->hasInitializer()) { // External global require no code
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// Check to see if this is a special global used by LLVM, if so, emit it.
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if (EmitSpecialLLVMGlobal(I))
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continue;
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O << "\n\n";
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std::string name = Mang->getValueName(I);
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Constant *C = I->getInitializer();
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unsigned Size = TD->getABITypeSize(C->getType());
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unsigned Align = TD->getPreferredAlignmentLog(I);
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if (C->isNullValue() &&
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(I->hasLinkOnceLinkage() || I->hasInternalLinkage() ||
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I->hasCommonLinkage() ||
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I->hasWeakLinkage() /* FIXME: Verify correct */)) {
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SwitchToDataSection(".data", I);
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if (I->hasInternalLinkage()) {
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O << "\t.lcomm " << name << "#," << TD->getABITypeSize(C->getType())
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<< "," << (1 << Align);
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O << "\n";
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} else {
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O << "\t.common " << name << "#," << TD->getABITypeSize(C->getType())
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<< "," << (1 << Align);
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O << "\n";
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}
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} else {
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switch (I->getLinkage()) {
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case GlobalValue::LinkOnceLinkage:
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case GlobalValue::CommonLinkage:
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case GlobalValue::WeakLinkage: // FIXME: Verify correct for weak.
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// Nonnull linkonce -> weak
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O << "\t.weak " << name << "\n";
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O << "\t.section\t.llvm.linkonce.d." << name
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<< ", \"aw\", \"progbits\"\n";
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SwitchToDataSection("", I);
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break;
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case GlobalValue::AppendingLinkage:
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// FIXME: appending linkage variables should go into a section of
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// their name or something. For now, just emit them as external.
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case GlobalValue::ExternalLinkage:
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// If external or appending, declare as a global symbol
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O << "\t.global " << name << "\n";
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// FALL THROUGH
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case GlobalValue::InternalLinkage:
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SwitchToDataSection(C->isNullValue() ? ".bss" : ".data", I);
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break;
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case GlobalValue::GhostLinkage:
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cerr << "GhostLinkage cannot appear in IA64AsmPrinter!\n";
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abort();
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case GlobalValue::DLLImportLinkage:
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cerr << "DLLImport linkage is not supported by this target!\n";
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abort();
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case GlobalValue::DLLExportLinkage:
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cerr << "DLLExport linkage is not supported by this target!\n";
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abort();
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default:
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assert(0 && "Unknown linkage type!");
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}
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EmitAlignment(Align);
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O << "\t.type " << name << ",@object\n";
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O << "\t.size " << name << "," << Size << "\n";
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O << name << ":\t\t\t\t// " << *C << "\n";
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EmitGlobalConstant(C);
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}
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}
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printModuleLevelGV(I);
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// we print out ".global X \n .type X, @function" for each external function
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O << "\n\n// br.call targets referenced (and not defined) above: \n";
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@ -15,7 +15,8 @@
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using namespace llvm;
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IA64TargetAsmInfo::IA64TargetAsmInfo(const IA64TargetMachine &TM) {
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IA64TargetAsmInfo::IA64TargetAsmInfo(const TargetMachine &TM):
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ELFTargetAsmInfo(TM) {
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CommentString = "//";
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Data8bitsDirective = "\tdata1\t"; // FIXME: check that we are
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Data16bitsDirective = "\tdata2.ua\t"; // disabling auto-alignment
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@ -28,7 +29,9 @@ IA64TargetAsmInfo::IA64TargetAsmInfo(const IA64TargetMachine &TM) {
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GlobalVarAddrSuffix="";
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FunctionAddrPrefix="@fptr(";
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FunctionAddrSuffix=")";
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// FIXME: would be nice to have rodata (no 'w') when appropriate?
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ConstantPoolSection = "\n\t.section .data, \"aw\", \"progbits\"\n";
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}
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// FIXME: Support small data/bss/rodata sections someday.
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@ -15,14 +15,15 @@
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#define IA64TARGETASMINFO_H
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#include "llvm/Target/TargetAsmInfo.h"
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#include "llvm/Target/ELFTargetAsmInfo.h"
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namespace llvm {
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// Forward declaration.
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class IA64TargetMachine;
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class TargetMachine;
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struct IA64TargetAsmInfo : public TargetAsmInfo {
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explicit IA64TargetAsmInfo(const IA64TargetMachine &TM);
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struct IA64TargetAsmInfo : public ELFTargetAsmInfo {
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explicit IA64TargetAsmInfo(const TargetMachine &TM);
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};
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