2009-06-02 17:52:33 +00:00
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//===-- AsmPrinter.cpp - Common AsmPrinter code ---------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the AsmPrinter class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Constants.h"
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#include "llvm/Module.h"
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2010-01-23 11:09:33 +00:00
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#include "llvm/CodeGen/DwarfWriter.h"
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2009-06-02 17:52:33 +00:00
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#include "llvm/CodeGen/GCMetadataPrinter.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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2009-11-18 14:58:34 +00:00
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#include "llvm/CodeGen/MachineFrameInfo.h"
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2009-10-14 17:57:32 +00:00
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineJumpTableInfo.h"
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#include "llvm/CodeGen/MachineLoopInfo.h"
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2009-06-02 17:52:33 +00:00
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/Analysis/DebugInfo.h"
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2009-10-14 17:57:32 +00:00
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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2009-10-14 17:57:32 +00:00
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbol.h"
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2009-06-02 17:52:33 +00:00
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Format.h"
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2009-10-14 17:57:32 +00:00
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/MC/MCAsmInfo.h"
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2010-01-23 11:09:33 +00:00
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#include "llvm/Target/Mangler.h"
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2009-06-02 17:52:33 +00:00
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#include "llvm/Target/TargetData.h"
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2009-11-18 14:58:34 +00:00
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#include "llvm/Target/TargetInstrInfo.h"
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2009-06-02 17:52:33 +00:00
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#include "llvm/Target/TargetLowering.h"
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2009-10-14 17:57:32 +00:00
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#include "llvm/Target/TargetLoweringObjectFile.h"
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2009-06-02 17:52:33 +00:00
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallString.h"
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#include <cerrno>
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using namespace llvm;
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static cl::opt<cl::boolOrDefault>
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AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
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cl::init(cl::BOU_UNSET));
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static bool getVerboseAsm(bool VDef) {
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switch (AsmVerbose) {
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default:
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case cl::BOU_UNSET: return VDef;
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case cl::BOU_TRUE: return true;
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case cl::BOU_FALSE: return false;
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}
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}
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char AsmPrinter::ID = 0;
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AsmPrinter::AsmPrinter(formatted_raw_ostream &o, TargetMachine &tm,
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const MCAsmInfo *T, bool VDef)
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2009-07-04 13:58:26 +00:00
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: MachineFunctionPass(&ID), FunctionNumber(0), O(o),
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TM(tm), MAI(T), TRI(tm.getRegisterInfo()),
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OutContext(*new MCContext()),
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// FIXME: Pass instprinter to streamer.
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OutStreamer(*createAsmStreamer(OutContext, O, *T,
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TM.getTargetData()->isLittleEndian(),
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getVerboseAsm(VDef), 0)),
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LastMI(0), LastFn(0), Counter(~0U), PrevDLT(NULL) {
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DW = 0; MMI = 0;
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VerboseAsm = getVerboseAsm(VDef);
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2009-06-02 17:52:33 +00:00
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}
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AsmPrinter::~AsmPrinter() {
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for (gcp_iterator I = GCMetadataPrinters.begin(),
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E = GCMetadataPrinters.end(); I != E; ++I)
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delete I->second;
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2009-10-14 17:57:32 +00:00
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delete &OutStreamer;
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delete &OutContext;
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2009-06-02 17:52:33 +00:00
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}
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2009-10-14 17:57:32 +00:00
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TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
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return TM.getTargetLowering()->getObjFileLowering();
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}
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2009-10-14 17:57:32 +00:00
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/// getCurrentSection() - Return the current section we are emitting to.
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const MCSection *AsmPrinter::getCurrentSection() const {
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return OutStreamer.getCurrentSection();
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2009-06-02 17:52:33 +00:00
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}
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2009-06-02 17:52:33 +00:00
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void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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2009-06-02 17:52:33 +00:00
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MachineFunctionPass::getAnalysisUsage(AU);
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AU.addRequired<GCModuleInfo>();
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2009-10-14 17:57:32 +00:00
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if (VerboseAsm)
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AU.addRequired<MachineLoopInfo>();
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2009-06-02 17:52:33 +00:00
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}
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bool AsmPrinter::doInitialization(Module &M) {
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2009-10-14 17:57:32 +00:00
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// Initialize TargetLoweringObjectFile.
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const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
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.Initialize(OutContext, TM);
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2009-06-02 17:52:33 +00:00
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2010-01-23 11:09:33 +00:00
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Mang = new Mangler(*MAI);
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2009-06-22 08:08:12 +00:00
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2009-10-14 17:57:32 +00:00
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// Allow the target to emit any magic that it wants at the start of the file.
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EmitStartOfAsmFile(M);
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if (MAI->hasSingleParameterDotFile()) {
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// Very minimal debug info. It is ignored if we emit actual
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// debug info. If we don't, this at least helps the user find where
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// a function came from.
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2009-06-02 17:52:33 +00:00
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O << "\t.file\t\"" << M.getModuleIdentifier() << "\"\n";
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}
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2009-10-14 17:57:32 +00:00
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GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
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assert(MI && "AsmPrinter didn't require GCModuleInfo?");
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for (GCModuleInfo::iterator I = MI->begin(), E = MI->end(); I != E; ++I)
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if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I))
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MP->beginAssembly(O, *this, *MAI);
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if (!M.getModuleInlineAsm().empty())
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O << MAI->getCommentString() << " Start of file scope inline assembly\n"
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<< M.getModuleInlineAsm()
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<< '\n' << MAI->getCommentString()
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<< " End of file scope inline assembly\n";
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2009-10-14 17:57:32 +00:00
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MMI = getAnalysisIfAvailable<MachineModuleInfo>();
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if (MMI)
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MMI->AnalyzeModule(M);
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DW = getAnalysisIfAvailable<DwarfWriter>();
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if (DW)
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DW->BeginModule(&M, MMI, O, this, MAI);
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2009-06-22 08:08:12 +00:00
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2009-06-02 17:52:33 +00:00
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return false;
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}
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2010-01-23 11:09:33 +00:00
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/// EmitGlobalVariable - Emit the specified global variable to the .s file.
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void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
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if (!GV->hasInitializer()) // External globals require no code.
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return;
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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(GV))
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return;
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MCSymbol *GVSym = GetGlobalValueSymbol(GV);
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printVisibility(GVSym, GV->getVisibility());
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if (MAI->hasDotTypeDotSizeDirective()) {
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O << "\t.type\t" << *GVSym;
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if (MAI->getCommentString()[0] != '@')
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O << ",@object\n";
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else
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O << ",%object\n";
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}
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SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM);
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const TargetData *TD = TM.getTargetData();
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unsigned Size = TD->getTypeAllocSize(GV->getType()->getElementType());
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unsigned AlignLog = TD->getPreferredAlignmentLog(GV);
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// Handle common and BSS local symbols (.lcomm).
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if (GVKind.isCommon() || GVKind.isBSSLocal()) {
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if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
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if (VerboseAsm) {
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WriteAsOperand(OutStreamer.GetCommentOS(), GV,
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/*PrintType=*/false, GV->getParent());
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OutStreamer.GetCommentOS() << '\n';
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}
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// Handle common symbols.
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if (GVKind.isCommon()) {
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// .comm _foo, 42, 4
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OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
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return;
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}
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// Handle local BSS symbols.
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if (MAI->hasMachoZeroFillDirective()) {
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const MCSection *TheSection =
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getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM);
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// .zerofill __DATA, __bss, _foo, 400, 5
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OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog);
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return;
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}
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if (MAI->hasLCOMMDirective()) {
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// .lcomm _foo, 42
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OutStreamer.EmitLocalCommonSymbol(GVSym, Size);
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return;
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}
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// .local _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Local);
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// .comm _foo, 42, 4
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OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
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return;
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}
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const MCSection *TheSection =
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getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM);
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// Handle the zerofill directive on darwin, which is a special form of BSS
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// emission.
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if (GVKind.isBSSExtern() && MAI->hasMachoZeroFillDirective()) {
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// .globl _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
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// .zerofill __DATA, __common, _foo, 400, 5
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OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog);
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return;
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}
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OutStreamer.SwitchSection(TheSection);
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// TODO: Factor into an 'emit linkage' thing that is shared with function
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// bodies.
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switch (GV->getLinkage()) {
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case GlobalValue::CommonLinkage:
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case GlobalValue::LinkOnceAnyLinkage:
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case GlobalValue::LinkOnceODRLinkage:
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case GlobalValue::WeakAnyLinkage:
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case GlobalValue::WeakODRLinkage:
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case GlobalValue::LinkerPrivateLinkage:
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if (MAI->getWeakDefDirective() != 0) {
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// .globl _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
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// .weak_definition _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
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} else if (const char *LinkOnce = MAI->getLinkOnceDirective()) {
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// .globl _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
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// .linkonce same_size
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O << LinkOnce;
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} else {
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// .weak _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Weak);
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}
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break;
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case GlobalValue::DLLExportLinkage:
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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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// .globl _foo
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OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
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break;
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case GlobalValue::PrivateLinkage:
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case GlobalValue::InternalLinkage:
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break;
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default:
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llvm_unreachable("Unknown linkage type!");
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}
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EmitAlignment(AlignLog, GV);
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if (VerboseAsm) {
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WriteAsOperand(OutStreamer.GetCommentOS(), GV,
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/*PrintType=*/false, GV->getParent());
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OutStreamer.GetCommentOS() << '\n';
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}
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OutStreamer.EmitLabel(GVSym);
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EmitGlobalConstant(GV->getInitializer());
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if (MAI->hasDotTypeDotSizeDirective())
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O << "\t.size\t" << *GVSym << ", " << Size << '\n';
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OutStreamer.AddBlankLine();
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}
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2009-06-02 17:52:33 +00:00
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bool AsmPrinter::doFinalization(Module &M) {
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2009-10-14 17:57:32 +00:00
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// Emit global variables.
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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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EmitGlobalVariable(I);
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2009-10-14 17:57:32 +00:00
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2009-06-27 10:44:33 +00:00
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// Emit final debug information.
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2009-10-14 17:57:32 +00:00
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if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
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2009-06-27 10:44:33 +00:00
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DW->EndModule();
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// If the target wants to know about weak references, print them all.
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2009-10-14 17:57:32 +00:00
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if (MAI->getWeakRefDirective()) {
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2009-06-27 10:44:33 +00:00
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// FIXME: This is not lazy, it would be nice to only print weak references
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// to stuff that is actually used. Note that doing so would require targets
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// to notice uses in operands (due to constant exprs etc). This should
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// happen with the MC stuff eventually.
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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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2010-01-23 11:09:33 +00:00
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|
|
if (!I->hasExternalWeakLinkage()) continue;
|
|
|
|
OutStreamer.EmitSymbolAttribute(GetGlobalValueSymbol(I),
|
|
|
|
MCSA_WeakReference);
|
2009-06-27 10:44:33 +00:00
|
|
|
}
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (!I->hasExternalWeakLinkage()) continue;
|
|
|
|
OutStreamer.EmitSymbolAttribute(GetGlobalValueSymbol(I),
|
|
|
|
MCSA_WeakReference);
|
2009-06-27 10:44:33 +00:00
|
|
|
}
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
if (MAI->getSetDirective()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.AddBlankLine();
|
2009-06-02 17:52:33 +00:00
|
|
|
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
|
2009-06-27 10:44:33 +00:00
|
|
|
I != E; ++I) {
|
2010-01-23 11:09:33 +00:00
|
|
|
MCSymbol *Name = GetGlobalValueSymbol(I);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
|
2010-01-23 11:09:33 +00:00
|
|
|
MCSymbol *Target = GetGlobalValueSymbol(GV);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
if (I->hasExternalLinkage() || !MAI->getWeakRefDirective())
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitSymbolAttribute(Name, MCSA_Global);
|
2009-06-02 17:52:33 +00:00
|
|
|
else if (I->hasWeakLinkage())
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitSymbolAttribute(Name, MCSA_WeakReference);
|
|
|
|
else
|
|
|
|
assert(I->hasLocalLinkage() && "Invalid alias linkage");
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
printVisibility(Name, I->getVisibility());
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
O << MAI->getSetDirective() << ' ' << *Name << ", " << *Target << '\n';
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
|
|
|
|
assert(MI && "AsmPrinter didn't require GCModuleInfo?");
|
|
|
|
for (GCModuleInfo::iterator I = MI->end(), E = MI->begin(); I != E; )
|
|
|
|
if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*--I))
|
2009-10-14 17:57:32 +00:00
|
|
|
MP->finishAssembly(O, *this, *MAI);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// If we don't have any trampolines, then we don't require stack memory
|
|
|
|
// to be executable. Some targets have a directive to declare this.
|
2009-06-27 10:44:33 +00:00
|
|
|
Function *InitTrampolineIntrinsic = M.getFunction("llvm.init.trampoline");
|
2009-06-02 17:52:33 +00:00
|
|
|
if (!InitTrampolineIntrinsic || InitTrampolineIntrinsic->use_empty())
|
2010-01-23 11:09:33 +00:00
|
|
|
if (MCSection *S = MAI->getNonexecutableStackSection(OutContext))
|
|
|
|
OutStreamer.SwitchSection(S);
|
2009-10-14 17:57:32 +00:00
|
|
|
|
|
|
|
// Allow the target to emit any magic that it wants at the end of the file,
|
|
|
|
// after everything else has gone out.
|
|
|
|
EmitEndOfAsmFile(M);
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
delete Mang; Mang = 0;
|
2009-06-27 10:44:33 +00:00
|
|
|
DW = 0; MMI = 0;
|
2009-10-14 17:57:32 +00:00
|
|
|
|
|
|
|
OutStreamer.Finish();
|
2009-06-02 17:52:33 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
|
2010-01-23 11:09:33 +00:00
|
|
|
// Get the function symbol.
|
|
|
|
CurrentFnSym = GetGlobalValueSymbol(MF.getFunction());
|
2009-06-02 17:52:33 +00:00
|
|
|
IncrementFunctionNumber();
|
2009-10-14 17:57:32 +00:00
|
|
|
|
|
|
|
if (VerboseAsm)
|
|
|
|
LI = &getAnalysis<MachineLoopInfo>();
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
// SectionCPs - Keep track the alignment, constpool entries per Section.
|
|
|
|
struct SectionCPs {
|
2009-10-14 17:57:32 +00:00
|
|
|
const MCSection *S;
|
2009-06-02 17:52:33 +00:00
|
|
|
unsigned Alignment;
|
|
|
|
SmallVector<unsigned, 4> CPEs;
|
2010-01-01 10:31:22 +00:00
|
|
|
SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {}
|
2009-06-02 17:52:33 +00:00
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitConstantPool - Print to the current output stream assembly
|
|
|
|
/// representations of the constants in the constant pool MCP. This is
|
|
|
|
/// used to print out constants which have been "spilled to memory" by
|
|
|
|
/// the code generator.
|
|
|
|
///
|
|
|
|
void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
|
|
|
|
const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
|
|
|
|
if (CP.empty()) return;
|
|
|
|
|
|
|
|
// Calculate sections for constant pool entries. We collect entries to go into
|
|
|
|
// the same section together to reduce amount of section switch statements.
|
|
|
|
SmallVector<SectionCPs, 4> CPSections;
|
|
|
|
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
|
2009-10-14 17:57:32 +00:00
|
|
|
const MachineConstantPoolEntry &CPE = CP[i];
|
2009-06-02 17:52:33 +00:00
|
|
|
unsigned Align = CPE.getAlignment();
|
2009-10-14 17:57:32 +00:00
|
|
|
|
|
|
|
SectionKind Kind;
|
|
|
|
switch (CPE.getRelocationInfo()) {
|
|
|
|
default: llvm_unreachable("Unknown section kind");
|
|
|
|
case 2: Kind = SectionKind::getReadOnlyWithRel(); break;
|
|
|
|
case 1:
|
|
|
|
Kind = SectionKind::getReadOnlyWithRelLocal();
|
|
|
|
break;
|
|
|
|
case 0:
|
|
|
|
switch (TM.getTargetData()->getTypeAllocSize(CPE.getType())) {
|
|
|
|
case 4: Kind = SectionKind::getMergeableConst4(); break;
|
|
|
|
case 8: Kind = SectionKind::getMergeableConst8(); break;
|
|
|
|
case 16: Kind = SectionKind::getMergeableConst16();break;
|
|
|
|
default: Kind = SectionKind::getMergeableConst(); break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
const MCSection *S = getObjFileLowering().getSectionForConstant(Kind);
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
// The number of sections are small, just do a linear search from the
|
|
|
|
// last section to the first.
|
|
|
|
bool Found = false;
|
|
|
|
unsigned SecIdx = CPSections.size();
|
|
|
|
while (SecIdx != 0) {
|
|
|
|
if (CPSections[--SecIdx].S == S) {
|
|
|
|
Found = true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!Found) {
|
|
|
|
SecIdx = CPSections.size();
|
|
|
|
CPSections.push_back(SectionCPs(S, Align));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (Align > CPSections[SecIdx].Alignment)
|
|
|
|
CPSections[SecIdx].Alignment = Align;
|
|
|
|
CPSections[SecIdx].CPEs.push_back(i);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Now print stuff into the calculated sections.
|
|
|
|
for (unsigned i = 0, e = CPSections.size(); i != e; ++i) {
|
2009-10-14 17:57:32 +00:00
|
|
|
OutStreamer.SwitchSection(CPSections[i].S);
|
2009-06-02 17:52:33 +00:00
|
|
|
EmitAlignment(Log2_32(CPSections[i].Alignment));
|
|
|
|
|
|
|
|
unsigned Offset = 0;
|
|
|
|
for (unsigned j = 0, ee = CPSections[i].CPEs.size(); j != ee; ++j) {
|
|
|
|
unsigned CPI = CPSections[i].CPEs[j];
|
|
|
|
MachineConstantPoolEntry CPE = CP[CPI];
|
|
|
|
|
|
|
|
// Emit inter-object padding for alignment.
|
|
|
|
unsigned AlignMask = CPE.getAlignment() - 1;
|
|
|
|
unsigned NewOffset = (Offset + AlignMask) & ~AlignMask;
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitFill(NewOffset - Offset, 0/*fillval*/, 0/*addrspace*/);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
const Type *Ty = CPE.getType();
|
|
|
|
Offset = NewOffset + TM.getTargetData()->getTypeAllocSize(Ty);
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
// Emit the label with a comment on it.
|
2009-06-02 17:52:33 +00:00
|
|
|
if (VerboseAsm) {
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.GetCommentOS() << "constant pool ";
|
|
|
|
WriteTypeSymbolic(OutStreamer.GetCommentOS(), CPE.getType(),
|
|
|
|
MF->getFunction()->getParent());
|
|
|
|
OutStreamer.GetCommentOS() << '\n';
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitLabel(GetCPISymbol(CPI));
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
if (CPE.isMachineConstantPoolEntry())
|
|
|
|
EmitMachineConstantPoolValue(CPE.Val.MachineCPVal);
|
|
|
|
else
|
|
|
|
EmitGlobalConstant(CPE.Val.ConstVal);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitJumpTableInfo - Print assembly representations of the jump tables used
|
|
|
|
/// by the current function to the current output stream.
|
|
|
|
///
|
|
|
|
void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
|
|
|
|
MachineFunction &MF) {
|
|
|
|
const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
|
|
|
|
if (JT.empty()) return;
|
|
|
|
|
|
|
|
bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
|
|
|
|
|
|
|
|
// Pick the directive to use to print the jump table entries, and switch to
|
|
|
|
// the appropriate section.
|
|
|
|
TargetLowering *LoweringInfo = TM.getTargetLowering();
|
|
|
|
|
|
|
|
const Function *F = MF.getFunction();
|
2009-06-22 08:08:12 +00:00
|
|
|
bool JTInDiffSection = false;
|
2009-10-14 17:57:32 +00:00
|
|
|
if (F->isWeakForLinker() ||
|
|
|
|
(IsPic && !LoweringInfo->usesGlobalOffsetTable())) {
|
2009-06-02 17:52:33 +00:00
|
|
|
// In PIC mode, we need to emit the jump table to the same section as the
|
|
|
|
// 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.
|
2009-10-14 17:57:32 +00:00
|
|
|
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang,
|
|
|
|
TM));
|
2009-06-02 17:52:33 +00:00
|
|
|
} else {
|
2009-10-14 17:57:32 +00:00
|
|
|
// Otherwise, drop it in the readonly section.
|
|
|
|
const MCSection *ReadOnlySection =
|
|
|
|
getObjFileLowering().getSectionForConstant(SectionKind::getReadOnly());
|
|
|
|
OutStreamer.SwitchSection(ReadOnlySection);
|
2009-06-22 08:08:12 +00:00
|
|
|
JTInDiffSection = true;
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
EmitAlignment(Log2_32(MJTI->getAlignment()));
|
|
|
|
|
|
|
|
for (unsigned i = 0, e = JT.size(); i != e; ++i) {
|
|
|
|
const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs;
|
|
|
|
|
|
|
|
// If this jump table was deleted, ignore it.
|
|
|
|
if (JTBBs.empty()) continue;
|
|
|
|
|
|
|
|
// For PIC codegen, if possible we want to use the SetDirective to reduce
|
|
|
|
// the number of relocations the assembler will generate for the jump table.
|
|
|
|
// Set directives are all printed before the jump table itself.
|
|
|
|
SmallPtrSet<MachineBasicBlock*, 16> EmittedSets;
|
2009-10-14 17:57:32 +00:00
|
|
|
if (MAI->getSetDirective() && IsPic)
|
2009-06-02 17:52:33 +00:00
|
|
|
for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
|
|
|
|
if (EmittedSets.insert(JTBBs[ii]))
|
|
|
|
printPICJumpTableSetLabel(i, JTBBs[ii]);
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
// On some targets (e.g. Darwin) we want to emit two consequtive labels
|
2009-06-02 17:52:33 +00:00
|
|
|
// before each jump table. The first label is never referenced, but tells
|
|
|
|
// the assembler and linker the extents of the jump table object. The
|
|
|
|
// second label is actually referenced by the code.
|
2010-01-23 11:09:33 +00:00
|
|
|
if (JTInDiffSection && MAI->getLinkerPrivateGlobalPrefix()[0])
|
|
|
|
OutStreamer.EmitLabel(GetJTISymbol(i, true));
|
|
|
|
|
|
|
|
OutStreamer.EmitLabel(GetJTISymbol(i));
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
|
|
|
|
printPICJumpTableEntry(MJTI, JTBBs[ii], i);
|
|
|
|
O << '\n';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
|
|
|
|
const MachineBasicBlock *MBB,
|
|
|
|
unsigned uid) const {
|
2009-10-14 17:57:32 +00:00
|
|
|
bool isPIC = TM.getRelocationModel() == Reloc::PIC_;
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// Use JumpTableDirective otherwise honor the entry size from the jump table
|
|
|
|
// info.
|
2009-10-14 17:57:32 +00:00
|
|
|
const char *JTEntryDirective = MAI->getJumpTableDirective(isPIC);
|
2009-06-02 17:52:33 +00:00
|
|
|
bool HadJTEntryDirective = JTEntryDirective != NULL;
|
|
|
|
if (!HadJTEntryDirective) {
|
|
|
|
JTEntryDirective = MJTI->getEntrySize() == 4 ?
|
2009-10-14 17:57:32 +00:00
|
|
|
MAI->getData32bitsDirective() : MAI->getData64bitsDirective();
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
O << JTEntryDirective << ' ';
|
|
|
|
|
|
|
|
// If we have emitted set directives for the jump table entries, print
|
|
|
|
// them rather than the entries themselves. If we're emitting PIC, then
|
|
|
|
// emit the table entries as differences between two text section labels.
|
|
|
|
// If we're emitting non-PIC code, then emit the entries as direct
|
|
|
|
// references to the target basic blocks.
|
2009-10-14 17:57:32 +00:00
|
|
|
if (!isPIC) {
|
2010-01-23 11:09:33 +00:00
|
|
|
O << *GetMBBSymbol(MBB->getNumber());
|
2009-10-14 17:57:32 +00:00
|
|
|
} else if (MAI->getSetDirective()) {
|
|
|
|
O << MAI->getPrivateGlobalPrefix() << getFunctionNumber()
|
|
|
|
<< '_' << uid << "_set_" << MBB->getNumber();
|
2009-06-02 17:52:33 +00:00
|
|
|
} else {
|
2010-01-23 11:09:33 +00:00
|
|
|
O << *GetMBBSymbol(MBB->getNumber());
|
2009-10-14 17:57:32 +00:00
|
|
|
// If the arch uses custom Jump Table directives, don't calc relative to
|
2010-01-23 11:09:33 +00:00
|
|
|
// JT.
|
2009-10-14 17:57:32 +00:00
|
|
|
if (!HadJTEntryDirective)
|
2010-01-23 11:09:33 +00:00
|
|
|
O << '-' << *GetJTISymbol(uid);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// EmitSpecialLLVMGlobal - Check to see if the specified global is a
|
|
|
|
/// special global used by LLVM. If so, emit it and return true, otherwise
|
|
|
|
/// do nothing and return false.
|
|
|
|
bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
|
|
|
|
if (GV->getName() == "llvm.used") {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (MAI->hasNoDeadStrip()) // No need to emit this at all.
|
2009-06-02 17:52:33 +00:00
|
|
|
EmitLLVMUsedList(GV->getInitializer());
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
// Ignore debug and non-emitted data. This handles llvm.compiler.used.
|
2009-06-02 17:52:33 +00:00
|
|
|
if (GV->getSection() == "llvm.metadata" ||
|
|
|
|
GV->hasAvailableExternallyLinkage())
|
|
|
|
return true;
|
|
|
|
|
|
|
|
if (!GV->hasAppendingLinkage()) return false;
|
|
|
|
|
|
|
|
assert(GV->hasInitializer() && "Not a special LLVM global!");
|
|
|
|
|
|
|
|
const TargetData *TD = TM.getTargetData();
|
|
|
|
unsigned Align = Log2_32(TD->getPointerPrefAlignment());
|
|
|
|
if (GV->getName() == "llvm.global_ctors") {
|
2009-10-14 17:57:32 +00:00
|
|
|
OutStreamer.SwitchSection(getObjFileLowering().getStaticCtorSection());
|
2009-06-02 17:52:33 +00:00
|
|
|
EmitAlignment(Align, 0);
|
|
|
|
EmitXXStructorList(GV->getInitializer());
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
if (TM.getRelocationModel() == Reloc::Static &&
|
|
|
|
MAI->hasStaticCtorDtorReferenceInStaticMode()) {
|
|
|
|
StringRef Sym(".constructors_used");
|
|
|
|
OutStreamer.EmitSymbolAttribute(OutContext.GetOrCreateSymbol(Sym),
|
|
|
|
MCSA_Reference);
|
|
|
|
}
|
2009-06-02 17:52:33 +00:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (GV->getName() == "llvm.global_dtors") {
|
2009-10-14 17:57:32 +00:00
|
|
|
OutStreamer.SwitchSection(getObjFileLowering().getStaticDtorSection());
|
2009-06-02 17:52:33 +00:00
|
|
|
EmitAlignment(Align, 0);
|
|
|
|
EmitXXStructorList(GV->getInitializer());
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
if (TM.getRelocationModel() == Reloc::Static &&
|
|
|
|
MAI->hasStaticCtorDtorReferenceInStaticMode()) {
|
|
|
|
StringRef Sym(".destructors_used");
|
|
|
|
OutStreamer.EmitSymbolAttribute(OutContext.GetOrCreateSymbol(Sym),
|
|
|
|
MCSA_Reference);
|
|
|
|
}
|
2009-06-02 17:52:33 +00:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
/// EmitLLVMUsedList - For targets that define a MAI::UsedDirective, mark each
|
2009-06-02 17:52:33 +00:00
|
|
|
/// global in the specified llvm.used list for which emitUsedDirectiveFor
|
|
|
|
/// is true, as being used with this directive.
|
|
|
|
void AsmPrinter::EmitLLVMUsedList(Constant *List) {
|
2009-06-22 08:08:12 +00:00
|
|
|
// Should be an array of 'i8*'.
|
2009-06-02 17:52:33 +00:00
|
|
|
ConstantArray *InitList = dyn_cast<ConstantArray>(List);
|
|
|
|
if (InitList == 0) return;
|
|
|
|
|
|
|
|
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
|
2009-10-14 17:57:32 +00:00
|
|
|
const GlobalValue *GV =
|
|
|
|
dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
|
2010-01-23 11:09:33 +00:00
|
|
|
if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang))
|
|
|
|
OutStreamer.EmitSymbolAttribute(GetGlobalValueSymbol(GV),
|
|
|
|
MCSA_NoDeadStrip);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the
|
|
|
|
/// function pointers, ignoring the init priority.
|
|
|
|
void AsmPrinter::EmitXXStructorList(Constant *List) {
|
|
|
|
// Should be an array of '{ int, void ()* }' structs. The first value is the
|
|
|
|
// init priority, which we ignore.
|
|
|
|
if (!isa<ConstantArray>(List)) return;
|
|
|
|
ConstantArray *InitList = cast<ConstantArray>(List);
|
|
|
|
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
|
|
|
|
if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
|
|
|
|
if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
|
|
|
|
|
|
|
|
if (CS->getOperand(1)->isNullValue())
|
|
|
|
return; // Found a null terminator, exit printing.
|
|
|
|
// Emit the function pointer.
|
|
|
|
EmitGlobalConstant(CS->getOperand(1));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
// Emission and print routines
|
|
|
|
//
|
|
|
|
|
|
|
|
/// EmitInt8 - Emit a byte directive and value.
|
|
|
|
///
|
|
|
|
void AsmPrinter::EmitInt8(int Value) const {
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitIntValue(Value, 1, 0/*addrspace*/);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitInt16 - Emit a short directive and value.
|
|
|
|
///
|
|
|
|
void AsmPrinter::EmitInt16(int Value) const {
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitIntValue(Value, 2, 0/*addrspace*/);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitInt32 - Emit a long directive and value.
|
|
|
|
///
|
|
|
|
void AsmPrinter::EmitInt32(int Value) const {
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitIntValue(Value, 4, 0/*addrspace*/);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitInt64 - Emit a long long directive and value.
|
|
|
|
///
|
|
|
|
void AsmPrinter::EmitInt64(uint64_t Value) const {
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitIntValue(Value, 8, 0/*addrspace*/);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
/// toOctal - Convert the low order bits of X into an octal digit.
|
|
|
|
///
|
|
|
|
static inline char toOctal(int X) {
|
|
|
|
return (X&7)+'0';
|
|
|
|
}
|
|
|
|
|
|
|
|
/// printStringChar - Print a char, escaped if necessary.
|
|
|
|
///
|
2009-10-14 17:57:32 +00:00
|
|
|
static void printStringChar(formatted_raw_ostream &O, unsigned char C) {
|
2009-06-02 17:52:33 +00:00
|
|
|
if (C == '"') {
|
|
|
|
O << "\\\"";
|
|
|
|
} else if (C == '\\') {
|
|
|
|
O << "\\\\";
|
|
|
|
} else if (isprint((unsigned char)C)) {
|
|
|
|
O << C;
|
|
|
|
} else {
|
|
|
|
switch(C) {
|
|
|
|
case '\b': O << "\\b"; break;
|
|
|
|
case '\f': O << "\\f"; break;
|
|
|
|
case '\n': O << "\\n"; break;
|
|
|
|
case '\r': O << "\\r"; break;
|
|
|
|
case '\t': O << "\\t"; break;
|
|
|
|
default:
|
|
|
|
O << '\\';
|
|
|
|
O << toOctal(C >> 6);
|
|
|
|
O << toOctal(C >> 3);
|
|
|
|
O << toOctal(C >> 0);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitFile - Emit a .file directive.
|
2010-01-23 11:09:33 +00:00
|
|
|
void AsmPrinter::EmitFile(unsigned Number, StringRef Name) const {
|
2009-06-02 17:52:33 +00:00
|
|
|
O << "\t.file\t" << Number << " \"";
|
|
|
|
for (unsigned i = 0, N = Name.size(); i < N; ++i)
|
|
|
|
printStringChar(O, Name[i]);
|
|
|
|
O << '\"';
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
// EmitAlignment - Emit an alignment directive to the specified power of
|
|
|
|
// two boundary. For example, if you pass in 3 here, you will get an 8
|
|
|
|
// byte alignment. If a global value is specified, and if that global has
|
|
|
|
// an explicit alignment requested, it will unconditionally override the
|
|
|
|
// alignment request. However, if ForcedAlignBits is specified, this value
|
|
|
|
// has final say: the ultimate alignment will be the max of ForcedAlignBits
|
|
|
|
// and the alignment computed with NumBits and the global.
|
|
|
|
//
|
|
|
|
// The algorithm is:
|
|
|
|
// Align = NumBits;
|
|
|
|
// if (GV && GV->hasalignment) Align = GV->getalignment();
|
|
|
|
// Align = std::max(Align, ForcedAlignBits);
|
|
|
|
//
|
|
|
|
void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV,
|
|
|
|
unsigned ForcedAlignBits,
|
|
|
|
bool UseFillExpr) const {
|
|
|
|
if (GV && GV->getAlignment())
|
|
|
|
NumBits = Log2_32(GV->getAlignment());
|
|
|
|
NumBits = std::max(NumBits, ForcedAlignBits);
|
|
|
|
|
|
|
|
if (NumBits == 0) return; // No need to emit alignment.
|
2009-10-14 17:57:32 +00:00
|
|
|
|
|
|
|
unsigned FillValue = 0;
|
|
|
|
if (getCurrentSection()->getKind().isText())
|
|
|
|
FillValue = MAI->getTextAlignFillValue();
|
|
|
|
|
|
|
|
OutStreamer.EmitValueToAlignment(1 << NumBits, FillValue, 1, 0);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
/// LowerConstant - Lower the specified LLVM Constant to an MCExpr.
|
2009-06-02 17:52:33 +00:00
|
|
|
///
|
2010-01-23 11:09:33 +00:00
|
|
|
static const MCExpr *LowerConstant(const Constant *CV, AsmPrinter &AP) {
|
|
|
|
MCContext &Ctx = AP.OutContext;
|
2010-01-15 15:37:28 +00:00
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (CV->isNullValue() || isa<UndefValue>(CV))
|
|
|
|
return MCConstantExpr::Create(0, Ctx);
|
|
|
|
|
|
|
|
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV))
|
|
|
|
return MCConstantExpr::Create(CI->getZExtValue(), Ctx);
|
2010-01-15 15:37:28 +00:00
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
|
|
|
|
return MCSymbolRefExpr::Create(AP.GetGlobalValueSymbol(GV), Ctx);
|
|
|
|
if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV))
|
|
|
|
return MCSymbolRefExpr::Create(AP.GetBlockAddressSymbol(BA), Ctx);
|
2010-01-15 15:37:28 +00:00
|
|
|
|
|
|
|
const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV);
|
|
|
|
if (CE == 0) {
|
2010-01-23 11:09:33 +00:00
|
|
|
llvm_unreachable("Unknown constant value to lower!");
|
|
|
|
return MCConstantExpr::Create(0, Ctx);
|
2010-01-15 15:37:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
switch (CE->getOpcode()) {
|
|
|
|
case Instruction::ZExt:
|
|
|
|
case Instruction::SExt:
|
|
|
|
case Instruction::FPTrunc:
|
|
|
|
case Instruction::FPExt:
|
|
|
|
case Instruction::UIToFP:
|
|
|
|
case Instruction::SIToFP:
|
|
|
|
case Instruction::FPToUI:
|
|
|
|
case Instruction::FPToSI:
|
2010-01-23 11:09:33 +00:00
|
|
|
default: llvm_unreachable("FIXME: Don't support this constant cast expr");
|
2010-01-15 15:37:28 +00:00
|
|
|
case Instruction::GetElementPtr: {
|
2010-01-23 11:09:33 +00:00
|
|
|
const TargetData &TD = *AP.TM.getTargetData();
|
|
|
|
// Generate a symbolic expression for the byte address
|
|
|
|
const Constant *PtrVal = CE->getOperand(0);
|
|
|
|
SmallVector<Value*, 8> IdxVec(CE->op_begin()+1, CE->op_end());
|
|
|
|
int64_t Offset = TD.getIndexedOffset(PtrVal->getType(), &IdxVec[0],
|
|
|
|
IdxVec.size());
|
|
|
|
|
|
|
|
const MCExpr *Base = LowerConstant(CE->getOperand(0), AP);
|
2010-01-15 15:37:28 +00:00
|
|
|
if (Offset == 0)
|
2010-01-23 11:09:33 +00:00
|
|
|
return Base;
|
2010-01-15 15:37:28 +00:00
|
|
|
|
|
|
|
// Truncate/sext the offset to the pointer size.
|
2010-01-23 11:09:33 +00:00
|
|
|
if (TD.getPointerSizeInBits() != 64) {
|
|
|
|
int SExtAmount = 64-TD.getPointerSizeInBits();
|
2010-01-15 15:37:28 +00:00
|
|
|
Offset = (Offset << SExtAmount) >> SExtAmount;
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-15 15:37:28 +00:00
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
return MCBinaryExpr::CreateAdd(Base, MCConstantExpr::Create(Offset, Ctx),
|
|
|
|
Ctx);
|
2010-01-15 15:37:28 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
case Instruction::Trunc:
|
|
|
|
// We emit the value and depend on the assembler to truncate the generated
|
|
|
|
// expression properly. This is important for differences between
|
|
|
|
// blockaddress labels. Since the two labels are in the same function, it
|
|
|
|
// is reasonable to treat their delta as a 32-bit value.
|
|
|
|
// FALL THROUGH.
|
2010-01-15 15:37:28 +00:00
|
|
|
case Instruction::BitCast:
|
2010-01-23 11:09:33 +00:00
|
|
|
return LowerConstant(CE->getOperand(0), AP);
|
2010-01-15 15:37:28 +00:00
|
|
|
|
|
|
|
case Instruction::IntToPtr: {
|
2010-01-23 11:09:33 +00:00
|
|
|
const TargetData &TD = *AP.TM.getTargetData();
|
2010-01-15 15:37:28 +00:00
|
|
|
// Handle casts to pointers by changing them into casts to the appropriate
|
|
|
|
// integer type. This promotes constant folding and simplifies this code.
|
|
|
|
Constant *Op = CE->getOperand(0);
|
2010-01-23 11:09:33 +00:00
|
|
|
Op = ConstantExpr::getIntegerCast(Op, TD.getIntPtrType(CV->getContext()),
|
2010-01-15 15:37:28 +00:00
|
|
|
false/*ZExt*/);
|
2010-01-23 11:09:33 +00:00
|
|
|
return LowerConstant(Op, AP);
|
2010-01-15 15:37:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
case Instruction::PtrToInt: {
|
2010-01-23 11:09:33 +00:00
|
|
|
const TargetData &TD = *AP.TM.getTargetData();
|
2010-01-15 15:37:28 +00:00
|
|
|
// Support only foldable casts to/from pointers that can be eliminated by
|
|
|
|
// changing the pointer to the appropriately sized integer type.
|
|
|
|
Constant *Op = CE->getOperand(0);
|
|
|
|
const Type *Ty = CE->getType();
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
const MCExpr *OpExpr = LowerConstant(Op, AP);
|
2010-01-15 15:37:28 +00:00
|
|
|
|
|
|
|
// We can emit the pointer value into this slot if the slot is an
|
2010-01-23 11:09:33 +00:00
|
|
|
// integer slot equal to the size of the pointer.
|
|
|
|
if (TD.getTypeAllocSize(Ty) == TD.getTypeAllocSize(Op->getType()))
|
|
|
|
return OpExpr;
|
|
|
|
|
|
|
|
// Otherwise the pointer is smaller than the resultant integer, mask off
|
|
|
|
// the high bits so we are sure to get a proper truncation if the input is
|
|
|
|
// a constant expr.
|
|
|
|
unsigned InBits = TD.getTypeAllocSizeInBits(Op->getType());
|
|
|
|
const MCExpr *MaskExpr = MCConstantExpr::Create(~0ULL >> (64-InBits), Ctx);
|
|
|
|
return MCBinaryExpr::CreateAnd(OpExpr, MaskExpr, Ctx);
|
2010-01-15 15:37:28 +00:00
|
|
|
}
|
2009-06-02 17:52:33 +00:00
|
|
|
|
2010-01-15 15:37:28 +00:00
|
|
|
case Instruction::Add:
|
|
|
|
case Instruction::Sub:
|
|
|
|
case Instruction::And:
|
|
|
|
case Instruction::Or:
|
2010-01-23 11:09:33 +00:00
|
|
|
case Instruction::Xor: {
|
|
|
|
const MCExpr *LHS = LowerConstant(CE->getOperand(0), AP);
|
|
|
|
const MCExpr *RHS = LowerConstant(CE->getOperand(1), AP);
|
2010-01-15 15:37:28 +00:00
|
|
|
switch (CE->getOpcode()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
default: llvm_unreachable("Unknown binary operator constant cast expr");
|
|
|
|
case Instruction::Add: return MCBinaryExpr::CreateAdd(LHS, RHS, Ctx);
|
|
|
|
case Instruction::Sub: return MCBinaryExpr::CreateSub(LHS, RHS, Ctx);
|
|
|
|
case Instruction::And: return MCBinaryExpr::CreateAnd(LHS, RHS, Ctx);
|
|
|
|
case Instruction::Or: return MCBinaryExpr::CreateOr (LHS, RHS, Ctx);
|
|
|
|
case Instruction::Xor: return MCBinaryExpr::CreateXor(LHS, RHS, Ctx);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
static void EmitGlobalConstantArray(const ConstantArray *CA, unsigned AddrSpace,
|
|
|
|
AsmPrinter &AP) {
|
|
|
|
if (AddrSpace != 0 || !CA->isString()) {
|
|
|
|
// Not a string. Print the values in successive locations
|
|
|
|
for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
|
|
|
|
AP.EmitGlobalConstant(CA->getOperand(i), AddrSpace);
|
|
|
|
return;
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
// Otherwise, it can be emitted as .ascii.
|
|
|
|
SmallVector<char, 128> TmpVec;
|
|
|
|
TmpVec.reserve(CA->getNumOperands());
|
|
|
|
for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
|
|
|
|
TmpVec.push_back(cast<ConstantInt>(CA->getOperand(i))->getZExtValue());
|
2009-06-02 17:52:33 +00:00
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
AP.OutStreamer.EmitBytes(StringRef(TmpVec.data(), TmpVec.size()), AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
static void EmitGlobalConstantVector(const ConstantVector *CV,
|
|
|
|
unsigned AddrSpace, AsmPrinter &AP) {
|
|
|
|
for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i)
|
|
|
|
AP.EmitGlobalConstant(CV->getOperand(i), AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
static void EmitGlobalConstantStruct(const ConstantStruct *CS,
|
|
|
|
unsigned AddrSpace, AsmPrinter &AP) {
|
2009-06-02 17:52:33 +00:00
|
|
|
// Print the fields in successive locations. Pad to align if needed!
|
2010-01-23 11:09:33 +00:00
|
|
|
const TargetData *TD = AP.TM.getTargetData();
|
|
|
|
unsigned Size = TD->getTypeAllocSize(CS->getType());
|
|
|
|
const StructLayout *Layout = TD->getStructLayout(CS->getType());
|
|
|
|
uint64_t SizeSoFar = 0;
|
|
|
|
for (unsigned i = 0, e = CS->getNumOperands(); i != e; ++i) {
|
|
|
|
const Constant *Field = CS->getOperand(i);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// Check if padding is needed and insert one or more 0s.
|
2010-01-23 11:09:33 +00:00
|
|
|
uint64_t FieldSize = TD->getTypeAllocSize(Field->getType());
|
|
|
|
uint64_t PadSize = ((i == e-1 ? Size : Layout->getElementOffset(i+1))
|
|
|
|
- Layout->getElementOffset(i)) - FieldSize;
|
|
|
|
SizeSoFar += FieldSize + PadSize;
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// Now print the actual field value.
|
2010-01-23 11:09:33 +00:00
|
|
|
AP.EmitGlobalConstant(Field, AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// Insert padding - this may include padding to increase the size of the
|
|
|
|
// current field up to the ABI size (if the struct is not packed) as well
|
|
|
|
// as padding to ensure that the next field starts at the right offset.
|
2010-01-23 11:09:33 +00:00
|
|
|
AP.OutStreamer.EmitZeros(PadSize, AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
assert(SizeSoFar == Layout->getSizeInBytes() &&
|
2009-06-02 17:52:33 +00:00
|
|
|
"Layout of constant struct may be incorrect!");
|
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
|
|
|
|
AsmPrinter &AP) {
|
2009-06-02 17:52:33 +00:00
|
|
|
// FP Constants are printed as integer constants to avoid losing
|
2010-01-23 11:09:33 +00:00
|
|
|
// precision.
|
2009-10-14 17:57:32 +00:00
|
|
|
if (CFP->getType()->isDoubleTy()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (AP.VerboseAsm) {
|
|
|
|
double Val = CFP->getValueAPF().convertToDouble();
|
|
|
|
AP.OutStreamer.GetCommentOS() << "double " << Val << '\n';
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
|
|
|
|
AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (CFP->getType()->isFloatTy()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (AP.VerboseAsm) {
|
|
|
|
float Val = CFP->getValueAPF().convertToFloat();
|
|
|
|
AP.OutStreamer.GetCommentOS() << "float " << Val << '\n';
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
|
|
|
|
AP.OutStreamer.EmitIntValue(Val, 4, AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (CFP->getType()->isX86_FP80Ty()) {
|
2009-06-02 17:52:33 +00:00
|
|
|
// all long double variants are printed as hex
|
|
|
|
// api needed to prevent premature destruction
|
2010-01-23 11:09:33 +00:00
|
|
|
APInt API = CFP->getValueAPF().bitcastToAPInt();
|
|
|
|
const uint64_t *p = API.getRawData();
|
|
|
|
if (AP.VerboseAsm) {
|
|
|
|
// Convert to double so we can print the approximate val as a comment.
|
|
|
|
APFloat DoubleVal = CFP->getValueAPF();
|
|
|
|
bool ignored;
|
|
|
|
DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
|
|
|
|
&ignored);
|
|
|
|
AP.OutStreamer.GetCommentOS() << "x86_fp80 ~= "
|
|
|
|
<< DoubleVal.convertToDouble() << '\n';
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
if (AP.TM.getTargetData()->isBigEndian()) {
|
|
|
|
AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
|
|
|
|
AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
|
|
|
|
} else {
|
|
|
|
AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
|
|
|
|
AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Emit the tail padding for the long double.
|
|
|
|
const TargetData &TD = *AP.TM.getTargetData();
|
|
|
|
AP.OutStreamer.EmitZeros(TD.getTypeAllocSize(CFP->getType()) -
|
|
|
|
TD.getTypeStoreSize(CFP->getType()), AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
assert(CFP->getType()->isPPC_FP128Ty() &&
|
|
|
|
"Floating point constant type not handled");
|
|
|
|
// All long double variants are printed as hex api needed to prevent
|
|
|
|
// premature destruction.
|
|
|
|
APInt API = CFP->getValueAPF().bitcastToAPInt();
|
|
|
|
const uint64_t *p = API.getRawData();
|
|
|
|
if (AP.TM.getTargetData()->isBigEndian()) {
|
|
|
|
AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
|
|
|
|
AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace);
|
|
|
|
} else {
|
|
|
|
AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace);
|
|
|
|
AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
|
|
|
|
}
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
static void EmitGlobalConstantLargeInt(const ConstantInt *CI,
|
|
|
|
unsigned AddrSpace, AsmPrinter &AP) {
|
|
|
|
const TargetData *TD = AP.TM.getTargetData();
|
2009-06-02 17:52:33 +00:00
|
|
|
unsigned BitWidth = CI->getBitWidth();
|
2010-01-15 15:37:28 +00:00
|
|
|
assert((BitWidth & 63) == 0 && "only support multiples of 64-bits");
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// We don't expect assemblers to support integer data directives
|
|
|
|
// for more than 64 bits, so we emit the data in at most 64-bit
|
|
|
|
// quantities at a time.
|
|
|
|
const uint64_t *RawData = CI->getValue().getRawData();
|
|
|
|
for (unsigned i = 0, e = BitWidth / 64; i != e; ++i) {
|
2010-01-23 11:09:33 +00:00
|
|
|
uint64_t Val = TD->isBigEndian() ? RawData[e - i - 1] : RawData[i];
|
|
|
|
AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
|
|
|
|
void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV)) {
|
|
|
|
uint64_t Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
|
|
|
|
return OutStreamer.EmitZeros(Size, AddrSpace);
|
2010-01-15 15:37:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
|
2010-01-23 11:09:33 +00:00
|
|
|
unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
|
|
|
|
switch (Size) {
|
|
|
|
case 1:
|
|
|
|
case 2:
|
|
|
|
case 4:
|
|
|
|
case 8:
|
|
|
|
if (VerboseAsm)
|
|
|
|
OutStreamer.GetCommentOS() << format("0x%llx\n", CI->getZExtValue());
|
|
|
|
OutStreamer.EmitIntValue(CI->getZExtValue(), Size, AddrSpace);
|
|
|
|
return;
|
|
|
|
default:
|
|
|
|
EmitGlobalConstantLargeInt(CI, AddrSpace, *this);
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
|
|
|
}
|
2010-01-15 15:37:28 +00:00
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV))
|
|
|
|
return EmitGlobalConstantArray(CVA, AddrSpace, *this);
|
|
|
|
|
|
|
|
if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV))
|
|
|
|
return EmitGlobalConstantStruct(CVS, AddrSpace, *this);
|
2009-06-02 17:52:33 +00:00
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
|
|
|
|
return EmitGlobalConstantFP(CFP, AddrSpace, *this);
|
|
|
|
|
|
|
|
if (const ConstantVector *V = dyn_cast<ConstantVector>(CV))
|
|
|
|
return EmitGlobalConstantVector(V, AddrSpace, *this);
|
|
|
|
|
|
|
|
if (isa<ConstantPointerNull>(CV)) {
|
|
|
|
unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
|
|
|
|
OutStreamer.EmitIntValue(0, Size, AddrSpace);
|
|
|
|
return;
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
2010-01-23 11:09:33 +00:00
|
|
|
|
|
|
|
// Otherwise, it must be a ConstantExpr. Lower it to an MCExpr, then emit it
|
|
|
|
// thread the streamer with EmitValue.
|
|
|
|
OutStreamer.EmitValue(LowerConstant(CV, *this),
|
|
|
|
TM.getTargetData()->getTypeAllocSize(CV->getType()),
|
|
|
|
AddrSpace);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
|
|
|
|
// Target doesn't support this yet!
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_unreachable("Target does not support EmitMachineConstantPoolValue");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// PrintSpecial - Print information related to the specified machine instr
|
|
|
|
/// that is independent of the operand, and may be independent of the instr
|
|
|
|
/// itself. This can be useful for portably encoding the comment character
|
|
|
|
/// or other bits of target-specific knowledge into the asmstrings. The
|
|
|
|
/// syntax used is ${:comment}. Targets can override this to add support
|
|
|
|
/// for their own strange codes.
|
|
|
|
void AsmPrinter::PrintSpecial(const MachineInstr *MI, const char *Code) const {
|
|
|
|
if (!strcmp(Code, "private")) {
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getPrivateGlobalPrefix();
|
2009-06-02 17:52:33 +00:00
|
|
|
} else if (!strcmp(Code, "comment")) {
|
|
|
|
if (VerboseAsm)
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getCommentString();
|
2009-06-02 17:52:33 +00:00
|
|
|
} else if (!strcmp(Code, "uid")) {
|
|
|
|
// Comparing the address of MI isn't sufficient, because machineinstrs may
|
|
|
|
// be allocated to the same address across functions.
|
|
|
|
const Function *ThisF = MI->getParent()->getParent()->getFunction();
|
|
|
|
|
2009-06-27 10:44:33 +00:00
|
|
|
// If this is a new LastFn instruction, bump the counter.
|
|
|
|
if (LastMI != MI || LastFn != ThisF) {
|
2009-06-02 17:52:33 +00:00
|
|
|
++Counter;
|
|
|
|
LastMI = MI;
|
2009-06-27 10:44:33 +00:00
|
|
|
LastFn = ThisF;
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
O << Counter;
|
|
|
|
} else {
|
2009-10-14 17:57:32 +00:00
|
|
|
std::string msg;
|
|
|
|
raw_string_ostream Msg(msg);
|
|
|
|
Msg << "Unknown special formatter '" << Code
|
2009-06-02 17:52:33 +00:00
|
|
|
<< "' for machine instr: " << *MI;
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error(Msg.str());
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// processDebugLoc - Processes the debug information of each machine
|
|
|
|
/// instruction's DebugLoc.
|
2009-10-14 17:57:32 +00:00
|
|
|
void AsmPrinter::processDebugLoc(const MachineInstr *MI,
|
|
|
|
bool BeforePrintingInsn) {
|
2009-11-18 14:58:34 +00:00
|
|
|
if (!MAI || !DW || !MAI->doesSupportDebugInformation()
|
|
|
|
|| !DW->ShouldEmitDwarfDebug())
|
2009-10-14 17:57:32 +00:00
|
|
|
return;
|
|
|
|
DebugLoc DL = MI->getDebugLoc();
|
2009-11-18 14:58:34 +00:00
|
|
|
if (DL.isUnknown())
|
|
|
|
return;
|
2010-01-23 11:09:33 +00:00
|
|
|
DILocation CurDLT = MF->getDILocation(DL);
|
|
|
|
if (CurDLT.getScope().isNull())
|
2009-11-18 14:58:34 +00:00
|
|
|
return;
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (!BeforePrintingInsn) {
|
2009-11-18 14:58:34 +00:00
|
|
|
// After printing instruction
|
|
|
|
DW->EndScope(MI);
|
2010-01-23 11:09:33 +00:00
|
|
|
} else if (CurDLT.getNode() != PrevDLT) {
|
|
|
|
unsigned L = DW->RecordSourceLine(CurDLT.getLineNumber(),
|
|
|
|
CurDLT.getColumnNumber(),
|
|
|
|
CurDLT.getScope().getNode());
|
|
|
|
printLabel(L);
|
|
|
|
O << '\n';
|
|
|
|
DW->BeginScope(MI, L);
|
|
|
|
PrevDLT = CurDLT.getNode();
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-11-18 14:58:34 +00:00
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
/// printInlineAsm - This method formats and prints the specified machine
|
|
|
|
/// instruction that is an inline asm.
|
|
|
|
void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
|
|
|
|
unsigned NumOperands = MI->getNumOperands();
|
|
|
|
|
|
|
|
// Count the number of register definitions.
|
|
|
|
unsigned NumDefs = 0;
|
|
|
|
for (; MI->getOperand(NumDefs).isReg() && MI->getOperand(NumDefs).isDef();
|
|
|
|
++NumDefs)
|
|
|
|
assert(NumDefs != NumOperands-1 && "No asm string?");
|
|
|
|
|
|
|
|
assert(MI->getOperand(NumDefs).isSymbol() && "No asm string?");
|
|
|
|
|
|
|
|
// Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
|
|
|
|
const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
|
|
|
|
|
2009-11-18 14:58:34 +00:00
|
|
|
O << '\t';
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
// If this asmstr is empty, just print the #APP/#NOAPP markers.
|
|
|
|
// These are useful to see where empty asm's wound up.
|
|
|
|
if (AsmStr[0] == 0) {
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t";
|
|
|
|
O << MAI->getCommentString() << MAI->getInlineAsmEnd() << '\n';
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t";
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
// The variant of the current asmprinter.
|
2009-10-14 17:57:32 +00:00
|
|
|
int AsmPrinterVariant = MAI->getAssemblerDialect();
|
2009-06-02 17:52:33 +00:00
|
|
|
|
|
|
|
int CurVariant = -1; // The number of the {.|.|.} region we are in.
|
|
|
|
const char *LastEmitted = AsmStr; // One past the last character emitted.
|
|
|
|
|
|
|
|
while (*LastEmitted) {
|
|
|
|
switch (*LastEmitted) {
|
|
|
|
default: {
|
|
|
|
// Not a special case, emit the string section literally.
|
|
|
|
const char *LiteralEnd = LastEmitted+1;
|
|
|
|
while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' &&
|
|
|
|
*LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n')
|
|
|
|
++LiteralEnd;
|
|
|
|
if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
|
|
|
|
O.write(LastEmitted, LiteralEnd-LastEmitted);
|
|
|
|
LastEmitted = LiteralEnd;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case '\n':
|
|
|
|
++LastEmitted; // Consume newline character.
|
|
|
|
O << '\n'; // Indent code with newline.
|
|
|
|
break;
|
|
|
|
case '$': {
|
|
|
|
++LastEmitted; // Consume '$' character.
|
|
|
|
bool Done = true;
|
|
|
|
|
|
|
|
// Handle escapes.
|
|
|
|
switch (*LastEmitted) {
|
|
|
|
default: Done = false; break;
|
|
|
|
case '$': // $$ -> $
|
|
|
|
if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
|
|
|
|
O << '$';
|
|
|
|
++LastEmitted; // Consume second '$' character.
|
|
|
|
break;
|
|
|
|
case '(': // $( -> same as GCC's { character.
|
|
|
|
++LastEmitted; // Consume '(' character.
|
|
|
|
if (CurVariant != -1) {
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error("Nested variants found in inline asm string: '"
|
|
|
|
+ std::string(AsmStr) + "'");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
CurVariant = 0; // We're in the first variant now.
|
|
|
|
break;
|
|
|
|
case '|':
|
|
|
|
++LastEmitted; // consume '|' character.
|
|
|
|
if (CurVariant == -1)
|
|
|
|
O << '|'; // this is gcc's behavior for | outside a variant
|
|
|
|
else
|
|
|
|
++CurVariant; // We're in the next variant.
|
|
|
|
break;
|
|
|
|
case ')': // $) -> same as GCC's } char.
|
|
|
|
++LastEmitted; // consume ')' character.
|
|
|
|
if (CurVariant == -1)
|
|
|
|
O << '}'; // this is gcc's behavior for } outside a variant
|
|
|
|
else
|
|
|
|
CurVariant = -1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (Done) break;
|
|
|
|
|
|
|
|
bool HasCurlyBraces = false;
|
|
|
|
if (*LastEmitted == '{') { // ${variable}
|
|
|
|
++LastEmitted; // Consume '{' character.
|
|
|
|
HasCurlyBraces = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// If we have ${:foo}, then this is not a real operand reference, it is a
|
|
|
|
// "magic" string reference, just like in .td files. Arrange to call
|
|
|
|
// PrintSpecial.
|
|
|
|
if (HasCurlyBraces && *LastEmitted == ':') {
|
|
|
|
++LastEmitted;
|
|
|
|
const char *StrStart = LastEmitted;
|
|
|
|
const char *StrEnd = strchr(StrStart, '}');
|
|
|
|
if (StrEnd == 0) {
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error("Unterminated ${:foo} operand in inline asm string: '"
|
|
|
|
+ std::string(AsmStr) + "'");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
std::string Val(StrStart, StrEnd);
|
|
|
|
PrintSpecial(MI, Val.c_str());
|
|
|
|
LastEmitted = StrEnd+1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
const char *IDStart = LastEmitted;
|
|
|
|
char *IDEnd;
|
|
|
|
errno = 0;
|
|
|
|
long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
|
|
|
|
if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error("Bad $ operand number in inline asm string: '"
|
|
|
|
+ std::string(AsmStr) + "'");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
LastEmitted = IDEnd;
|
|
|
|
|
|
|
|
char Modifier[2] = { 0, 0 };
|
|
|
|
|
|
|
|
if (HasCurlyBraces) {
|
|
|
|
// If we have curly braces, check for a modifier character. This
|
|
|
|
// supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
|
|
|
|
if (*LastEmitted == ':') {
|
|
|
|
++LastEmitted; // Consume ':' character.
|
|
|
|
if (*LastEmitted == 0) {
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error("Bad ${:} expression in inline asm string: '"
|
|
|
|
+ std::string(AsmStr) + "'");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
Modifier[0] = *LastEmitted;
|
|
|
|
++LastEmitted; // Consume modifier character.
|
|
|
|
}
|
|
|
|
|
|
|
|
if (*LastEmitted != '}') {
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error("Bad ${} expression in inline asm string: '"
|
|
|
|
+ std::string(AsmStr) + "'");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
++LastEmitted; // Consume '}' character.
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((unsigned)Val >= NumOperands-1) {
|
2009-10-14 17:57:32 +00:00
|
|
|
llvm_report_error("Invalid $ operand number in inline asm string: '"
|
|
|
|
+ std::string(AsmStr) + "'");
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Okay, we finally have a value number. Ask the target to print this
|
|
|
|
// operand!
|
|
|
|
if (CurVariant == -1 || CurVariant == AsmPrinterVariant) {
|
|
|
|
unsigned OpNo = 1;
|
|
|
|
|
|
|
|
bool Error = false;
|
|
|
|
|
|
|
|
// Scan to find the machine operand number for the operand.
|
|
|
|
for (; Val; --Val) {
|
|
|
|
if (OpNo >= MI->getNumOperands()) break;
|
|
|
|
unsigned OpFlags = MI->getOperand(OpNo).getImm();
|
|
|
|
OpNo += InlineAsm::getNumOperandRegisters(OpFlags) + 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (OpNo >= MI->getNumOperands()) {
|
|
|
|
Error = true;
|
|
|
|
} else {
|
|
|
|
unsigned OpFlags = MI->getOperand(OpNo).getImm();
|
|
|
|
++OpNo; // Skip over the ID number.
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (Modifier[0] == 'l') // labels are target independent
|
|
|
|
O << *GetMBBSymbol(MI->getOperand(OpNo).getMBB()->getNumber());
|
2009-06-02 17:52:33 +00:00
|
|
|
else {
|
|
|
|
AsmPrinter *AP = const_cast<AsmPrinter*>(this);
|
|
|
|
if ((OpFlags & 7) == 4) {
|
|
|
|
Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
|
|
|
|
Modifier[0] ? Modifier : 0);
|
|
|
|
} else {
|
|
|
|
Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
|
|
|
|
Modifier[0] ? Modifier : 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (Error) {
|
2009-10-14 17:57:32 +00:00
|
|
|
std::string msg;
|
|
|
|
raw_string_ostream Msg(msg);
|
2010-01-23 11:09:33 +00:00
|
|
|
Msg << "Invalid operand found in inline asm: '" << AsmStr << "'\n";
|
2009-10-14 17:57:32 +00:00
|
|
|
MI->print(Msg);
|
|
|
|
llvm_report_error(Msg.str());
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2009-10-14 17:57:32 +00:00
|
|
|
O << "\n\t" << MAI->getCommentString() << MAI->getInlineAsmEnd();
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// printImplicitDef - This method prints the specified machine instruction
|
|
|
|
/// that is an implicit def.
|
|
|
|
void AsmPrinter::printImplicitDef(const MachineInstr *MI) const {
|
2009-10-14 17:57:32 +00:00
|
|
|
if (!VerboseAsm) return;
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
|
|
O << MAI->getCommentString() << " implicit-def: "
|
|
|
|
<< TRI->getName(MI->getOperand(0).getReg());
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
2009-11-05 17:17:44 +00:00
|
|
|
void AsmPrinter::printKill(const MachineInstr *MI) const {
|
|
|
|
if (!VerboseAsm) return;
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
|
|
O << MAI->getCommentString() << " kill:";
|
|
|
|
for (unsigned n = 0, e = MI->getNumOperands(); n != e; ++n) {
|
|
|
|
const MachineOperand &op = MI->getOperand(n);
|
|
|
|
assert(op.isReg() && "KILL instruction must have only register operands");
|
|
|
|
O << ' ' << TRI->getName(op.getReg()) << (op.isDef() ? "<def>" : "<kill>");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
/// printLabel - This method prints a local label used by debug and
|
|
|
|
/// exception handling tables.
|
|
|
|
void AsmPrinter::printLabel(const MachineInstr *MI) const {
|
|
|
|
printLabel(MI->getOperand(0).getImm());
|
|
|
|
}
|
|
|
|
|
|
|
|
void AsmPrinter::printLabel(unsigned Id) const {
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getPrivateGlobalPrefix() << "label" << Id << ':';
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
|
|
|
|
/// instruction, using the specified assembler variant. Targets should
|
2010-01-15 15:37:28 +00:00
|
|
|
/// override this to format as appropriate.
|
2009-06-02 17:52:33 +00:00
|
|
|
bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
|
|
unsigned AsmVariant, const char *ExtraCode) {
|
|
|
|
// Target doesn't support this yet!
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
|
|
|
|
unsigned AsmVariant,
|
|
|
|
const char *ExtraCode) {
|
|
|
|
// Target doesn't support this yet!
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2009-12-01 11:07:05 +00:00
|
|
|
MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA,
|
|
|
|
const char *Suffix) const {
|
|
|
|
return GetBlockAddressSymbol(BA->getFunction(), BA->getBasicBlock(), Suffix);
|
2009-11-04 14:58:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
MCSymbol *AsmPrinter::GetBlockAddressSymbol(const Function *F,
|
2009-12-01 11:07:05 +00:00
|
|
|
const BasicBlock *BB,
|
|
|
|
const char *Suffix) const {
|
2009-11-04 14:58:56 +00:00
|
|
|
assert(BB->hasName() &&
|
|
|
|
"Address of anonymous basic block not supported yet!");
|
|
|
|
|
2009-11-18 14:58:34 +00:00
|
|
|
// This code must use the function name itself, and not the function number,
|
|
|
|
// since it must be possible to generate the label name from within other
|
|
|
|
// functions.
|
2010-01-15 15:37:28 +00:00
|
|
|
SmallString<60> FnName;
|
|
|
|
Mang->getNameWithPrefix(FnName, F, false);
|
2009-11-18 14:58:34 +00:00
|
|
|
|
2010-01-15 15:37:28 +00:00
|
|
|
// FIXME: THIS IS BROKEN IF THE LLVM BASIC BLOCK DOESN'T HAVE A NAME!
|
|
|
|
SmallString<60> NameResult;
|
|
|
|
Mang->getNameWithPrefix(NameResult,
|
|
|
|
StringRef("BA") + Twine((unsigned)FnName.size()) +
|
|
|
|
"_" + FnName.str() + "_" + BB->getName() + Suffix,
|
|
|
|
Mangler::Private);
|
2009-11-04 14:58:56 +00:00
|
|
|
|
2010-01-15 15:37:28 +00:00
|
|
|
return OutContext.GetOrCreateSymbol(NameResult.str());
|
2009-11-04 14:58:56 +00:00
|
|
|
}
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
MCSymbol *AsmPrinter::GetMBBSymbol(unsigned MBBID) const {
|
|
|
|
SmallString<60> Name;
|
|
|
|
raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "BB"
|
|
|
|
<< getFunctionNumber() << '_' << MBBID;
|
|
|
|
return OutContext.GetOrCreateSymbol(Name.str());
|
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
/// GetCPISymbol - Return the symbol for the specified constant pool entry.
|
|
|
|
MCSymbol *AsmPrinter::GetCPISymbol(unsigned CPID) const {
|
|
|
|
SmallString<60> Name;
|
|
|
|
raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "CPI"
|
|
|
|
<< getFunctionNumber() << '_' << CPID;
|
|
|
|
return OutContext.GetOrCreateSymbol(Name.str());
|
|
|
|
}
|
|
|
|
|
|
|
|
/// GetJTISymbol - Return the symbol for the specified jump table entry.
|
|
|
|
MCSymbol *AsmPrinter::GetJTISymbol(unsigned JTID, bool isLinkerPrivate) const {
|
|
|
|
const char *Prefix = isLinkerPrivate ? MAI->getLinkerPrivateGlobalPrefix() :
|
|
|
|
MAI->getPrivateGlobalPrefix();
|
|
|
|
SmallString<60> Name;
|
|
|
|
raw_svector_ostream(Name) << Prefix << "JTI" << getFunctionNumber() << '_'
|
|
|
|
<< JTID;
|
|
|
|
return OutContext.GetOrCreateSymbol(Name.str());
|
|
|
|
}
|
|
|
|
|
|
|
|
/// GetGlobalValueSymbol - Return the MCSymbol for the specified global
|
|
|
|
/// value.
|
|
|
|
MCSymbol *AsmPrinter::GetGlobalValueSymbol(const GlobalValue *GV) const {
|
|
|
|
SmallString<60> NameStr;
|
|
|
|
Mang->getNameWithPrefix(NameStr, GV, false);
|
|
|
|
return OutContext.GetOrCreateSymbol(NameStr.str());
|
|
|
|
}
|
|
|
|
|
|
|
|
/// GetSymbolWithGlobalValueBase - Return the MCSymbol for a symbol with
|
|
|
|
/// global value name as its base, with the specified suffix, and where the
|
|
|
|
/// symbol is forced to have private linkage if ForcePrivate is true.
|
|
|
|
MCSymbol *AsmPrinter::GetSymbolWithGlobalValueBase(const GlobalValue *GV,
|
|
|
|
StringRef Suffix,
|
|
|
|
bool ForcePrivate) const {
|
|
|
|
SmallString<60> NameStr;
|
|
|
|
Mang->getNameWithPrefix(NameStr, GV, ForcePrivate);
|
|
|
|
NameStr.append(Suffix.begin(), Suffix.end());
|
|
|
|
return OutContext.GetOrCreateSymbol(NameStr.str());
|
|
|
|
}
|
|
|
|
|
|
|
|
/// GetExternalSymbolSymbol - Return the MCSymbol for the specified
|
|
|
|
/// ExternalSymbol.
|
|
|
|
MCSymbol *AsmPrinter::GetExternalSymbolSymbol(StringRef Sym) const {
|
|
|
|
SmallString<60> NameStr;
|
|
|
|
Mang->getNameWithPrefix(NameStr, Sym);
|
|
|
|
return OutContext.GetOrCreateSymbol(NameStr.str());
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/// PrintParentLoopComment - Print comments about parent loops of this one.
|
|
|
|
static void PrintParentLoopComment(raw_ostream &OS, const MachineLoop *Loop,
|
|
|
|
unsigned FunctionNumber) {
|
|
|
|
if (Loop == 0) return;
|
|
|
|
PrintParentLoopComment(OS, Loop->getParentLoop(), FunctionNumber);
|
|
|
|
OS.indent(Loop->getLoopDepth()*2)
|
|
|
|
<< "Parent Loop BB" << FunctionNumber << "_"
|
|
|
|
<< Loop->getHeader()->getNumber()
|
|
|
|
<< " Depth=" << Loop->getLoopDepth() << '\n';
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// PrintChildLoopComment - Print comments about child loops within
|
|
|
|
/// the loop for this basic block, with nesting.
|
|
|
|
static void PrintChildLoopComment(raw_ostream &OS, const MachineLoop *Loop,
|
|
|
|
unsigned FunctionNumber) {
|
|
|
|
// Add child loop information
|
|
|
|
for (MachineLoop::iterator CL = Loop->begin(), E = Loop->end();CL != E; ++CL){
|
|
|
|
OS.indent((*CL)->getLoopDepth()*2)
|
|
|
|
<< "Child Loop BB" << FunctionNumber << "_"
|
|
|
|
<< (*CL)->getHeader()->getNumber() << " Depth " << (*CL)->getLoopDepth()
|
|
|
|
<< '\n';
|
|
|
|
PrintChildLoopComment(OS, *CL, FunctionNumber);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitComments - Pretty-print comments for basic blocks.
|
|
|
|
static void PrintBasicBlockLoopComments(const MachineBasicBlock &MBB,
|
|
|
|
const MachineLoopInfo *LI,
|
|
|
|
const AsmPrinter &AP) {
|
|
|
|
// Add loop depth information
|
|
|
|
const MachineLoop *Loop = LI->getLoopFor(&MBB);
|
|
|
|
if (Loop == 0) return;
|
|
|
|
|
|
|
|
MachineBasicBlock *Header = Loop->getHeader();
|
|
|
|
assert(Header && "No header for loop");
|
|
|
|
|
|
|
|
// If this block is not a loop header, just print out what is the loop header
|
|
|
|
// and return.
|
|
|
|
if (Header != &MBB) {
|
|
|
|
AP.OutStreamer.AddComment(" in Loop: Header=BB" +
|
|
|
|
Twine(AP.getFunctionNumber())+"_" +
|
|
|
|
Twine(Loop->getHeader()->getNumber())+
|
|
|
|
" Depth="+Twine(Loop->getLoopDepth()));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Otherwise, it is a loop header. Print out information about child and
|
|
|
|
// parent loops.
|
|
|
|
raw_ostream &OS = AP.OutStreamer.GetCommentOS();
|
|
|
|
|
|
|
|
PrintParentLoopComment(OS, Loop->getParentLoop(), AP.getFunctionNumber());
|
|
|
|
|
|
|
|
OS << "=>";
|
|
|
|
OS.indent(Loop->getLoopDepth()*2-2);
|
|
|
|
|
|
|
|
OS << "This ";
|
|
|
|
if (Loop->empty())
|
|
|
|
OS << "Inner ";
|
|
|
|
OS << "Loop Header: Depth=" + Twine(Loop->getLoopDepth()) << '\n';
|
|
|
|
|
|
|
|
PrintChildLoopComment(OS, Loop, AP.getFunctionNumber());
|
|
|
|
}
|
|
|
|
|
2009-06-02 17:52:33 +00:00
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
/// EmitBasicBlockStart - This method prints the label for the specified
|
|
|
|
/// MachineBasicBlock, an alignment (if present) and a comment describing
|
|
|
|
/// it if appropriate.
|
|
|
|
void AsmPrinter::EmitBasicBlockStart(const MachineBasicBlock *MBB) const {
|
2009-11-04 14:58:56 +00:00
|
|
|
// Emit an alignment directive for this block, if needed.
|
2009-10-14 17:57:32 +00:00
|
|
|
if (unsigned Align = MBB->getAlignment())
|
|
|
|
EmitAlignment(Log2_32(Align));
|
|
|
|
|
2009-11-04 14:58:56 +00:00
|
|
|
// If the block has its address taken, emit a special label to satisfy
|
|
|
|
// references to the block. This is done so that we don't need to
|
|
|
|
// remember the number of this label, and so that we can make
|
|
|
|
// forward references to labels without knowing what their numbers
|
|
|
|
// will be.
|
|
|
|
if (MBB->hasAddressTaken()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
const BasicBlock *BB = MBB->getBasicBlock();
|
|
|
|
if (VerboseAsm)
|
|
|
|
OutStreamer.AddComment("Address Taken");
|
|
|
|
OutStreamer.EmitLabel(GetBlockAddressSymbol(BB->getParent(), BB));
|
2009-11-04 14:58:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Print the main label for the block.
|
2009-10-14 17:57:32 +00:00
|
|
|
if (MBB->pred_empty() || MBB->isOnlyReachableByFallthrough()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (VerboseAsm) {
|
|
|
|
// NOTE: Want this comment at start of line.
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getCommentString() << " BB#" << MBB->getNumber() << ':';
|
2010-01-23 11:09:33 +00:00
|
|
|
if (const BasicBlock *BB = MBB->getBasicBlock())
|
|
|
|
if (BB->hasName())
|
|
|
|
OutStreamer.AddComment("%" + BB->getName());
|
|
|
|
|
|
|
|
PrintBasicBlockLoopComments(*MBB, LI, *this);
|
|
|
|
OutStreamer.AddBlankLine();
|
|
|
|
}
|
2009-10-14 17:57:32 +00:00
|
|
|
} else {
|
2010-01-23 11:09:33 +00:00
|
|
|
if (VerboseAsm) {
|
|
|
|
if (const BasicBlock *BB = MBB->getBasicBlock())
|
|
|
|
if (BB->hasName())
|
|
|
|
OutStreamer.AddComment("%" + BB->getName());
|
|
|
|
PrintBasicBlockLoopComments(*MBB, LI, *this);
|
|
|
|
}
|
2009-10-14 17:57:32 +00:00
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
OutStreamer.EmitLabel(GetMBBSymbol(MBB->getNumber()));
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// printPICJumpTableSetLabel - This method prints a set label for the
|
|
|
|
/// specified MachineBasicBlock for a jumptable entry.
|
|
|
|
void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
|
|
|
|
const MachineBasicBlock *MBB) const {
|
2009-10-14 17:57:32 +00:00
|
|
|
if (!MAI->getSetDirective())
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
|
2010-01-23 11:09:33 +00:00
|
|
|
<< getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ','
|
|
|
|
<< *GetMBBSymbol(MBB->getNumber())
|
|
|
|
<< '-' << *GetJTISymbol(uid) << '\n';
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
|
|
|
|
const MachineBasicBlock *MBB) const {
|
2009-10-14 17:57:32 +00:00
|
|
|
if (!MAI->getSetDirective())
|
2009-06-02 17:52:33 +00:00
|
|
|
return;
|
|
|
|
|
2009-10-14 17:57:32 +00:00
|
|
|
O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
|
2009-06-02 17:52:33 +00:00
|
|
|
<< getFunctionNumber() << '_' << uid << '_' << uid2
|
2010-01-23 11:09:33 +00:00
|
|
|
<< "_set_" << MBB->getNumber() << ','
|
|
|
|
<< *GetMBBSymbol(MBB->getNumber())
|
|
|
|
<< '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
|
2009-06-02 17:52:33 +00:00
|
|
|
<< '_' << uid << '_' << uid2 << '\n';
|
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
void AsmPrinter::printVisibility(MCSymbol *Sym, unsigned Visibility) const {
|
|
|
|
MCSymbolAttr Attr = MCSA_Invalid;
|
|
|
|
|
|
|
|
switch (Visibility) {
|
|
|
|
default: break;
|
|
|
|
case GlobalValue::HiddenVisibility:
|
|
|
|
Attr = MAI->getHiddenVisibilityAttr();
|
2009-06-02 17:52:33 +00:00
|
|
|
break;
|
2010-01-23 11:09:33 +00:00
|
|
|
case GlobalValue::ProtectedVisibility:
|
|
|
|
Attr = MAI->getProtectedVisibilityAttr();
|
2009-06-02 17:52:33 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
if (Attr != MCSA_Invalid)
|
|
|
|
OutStreamer.EmitSymbolAttribute(Sym, Attr);
|
2009-06-02 17:52:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void AsmPrinter::printOffset(int64_t Offset) const {
|
|
|
|
if (Offset > 0)
|
|
|
|
O << '+' << Offset;
|
|
|
|
else if (Offset < 0)
|
|
|
|
O << Offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
GCMetadataPrinter *AsmPrinter::GetOrCreateGCPrinter(GCStrategy *S) {
|
|
|
|
if (!S->usesMetadata())
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
gcp_iterator GCPI = GCMetadataPrinters.find(S);
|
|
|
|
if (GCPI != GCMetadataPrinters.end())
|
|
|
|
return GCPI->second;
|
|
|
|
|
|
|
|
const char *Name = S->getName().c_str();
|
|
|
|
|
|
|
|
for (GCMetadataPrinterRegistry::iterator
|
|
|
|
I = GCMetadataPrinterRegistry::begin(),
|
|
|
|
E = GCMetadataPrinterRegistry::end(); I != E; ++I)
|
|
|
|
if (strcmp(Name, I->getName()) == 0) {
|
|
|
|
GCMetadataPrinter *GMP = I->instantiate();
|
|
|
|
GMP->S = S;
|
|
|
|
GCMetadataPrinters.insert(std::make_pair(S, GMP));
|
|
|
|
return GMP;
|
|
|
|
}
|
|
|
|
|
2010-01-23 11:09:33 +00:00
|
|
|
llvm_report_error("no GCMetadataPrinter registered for GC: " + Twine(Name));
|
|
|
|
return 0;
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// EmitComments - Pretty-print comments for instructions
|
|
|
|
void AsmPrinter::EmitComments(const MachineInstr &MI) const {
|
2009-11-18 14:58:34 +00:00
|
|
|
if (!VerboseAsm)
|
|
|
|
return;
|
2009-10-14 17:57:32 +00:00
|
|
|
|
2009-11-18 14:58:34 +00:00
|
|
|
bool Newline = false;
|
|
|
|
|
|
|
|
if (!MI.getDebugLoc().isUnknown()) {
|
2010-01-23 11:09:33 +00:00
|
|
|
DILocation DLT = MF->getDILocation(MI.getDebugLoc());
|
2009-11-18 14:58:34 +00:00
|
|
|
|
|
|
|
// Print source line info.
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
2009-12-15 18:09:07 +00:00
|
|
|
O << MAI->getCommentString() << ' ';
|
2010-01-23 11:09:33 +00:00
|
|
|
DIScope Scope = DLT.getScope();
|
2009-12-15 18:09:07 +00:00
|
|
|
// Omit the directory, because it's likely to be long and uninteresting.
|
|
|
|
if (!Scope.isNull())
|
|
|
|
O << Scope.getFilename();
|
|
|
|
else
|
|
|
|
O << "<unknown>";
|
2010-01-23 11:09:33 +00:00
|
|
|
O << ':' << DLT.getLineNumber();
|
|
|
|
if (DLT.getColumnNumber() != 0)
|
|
|
|
O << ':' << DLT.getColumnNumber();
|
2009-11-18 14:58:34 +00:00
|
|
|
Newline = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check for spills and reloads
|
|
|
|
int FI;
|
|
|
|
|
|
|
|
const MachineFrameInfo *FrameInfo =
|
|
|
|
MI.getParent()->getParent()->getFrameInfo();
|
|
|
|
|
|
|
|
// We assume a single instruction only has a spill or reload, not
|
|
|
|
// both.
|
2009-12-15 18:09:07 +00:00
|
|
|
const MachineMemOperand *MMO;
|
2009-11-18 14:58:34 +00:00
|
|
|
if (TM.getInstrInfo()->isLoadFromStackSlotPostFE(&MI, FI)) {
|
|
|
|
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
|
2009-12-15 18:09:07 +00:00
|
|
|
MMO = *MI.memoperands_begin();
|
2009-11-18 14:58:34 +00:00
|
|
|
if (Newline) O << '\n';
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
2009-12-15 18:09:07 +00:00
|
|
|
O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Reload";
|
2009-11-18 14:58:34 +00:00
|
|
|
Newline = true;
|
|
|
|
}
|
|
|
|
}
|
2009-12-15 18:09:07 +00:00
|
|
|
else if (TM.getInstrInfo()->hasLoadFromStackSlot(&MI, MMO, FI)) {
|
2009-11-18 14:58:34 +00:00
|
|
|
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
|
|
|
|
if (Newline) O << '\n';
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
2009-12-15 18:09:07 +00:00
|
|
|
O << MAI->getCommentString() << ' '
|
|
|
|
<< MMO->getSize() << "-byte Folded Reload";
|
2009-11-18 14:58:34 +00:00
|
|
|
Newline = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (TM.getInstrInfo()->isStoreToStackSlotPostFE(&MI, FI)) {
|
|
|
|
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
|
2009-12-15 18:09:07 +00:00
|
|
|
MMO = *MI.memoperands_begin();
|
2009-11-18 14:58:34 +00:00
|
|
|
if (Newline) O << '\n';
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
2009-12-15 18:09:07 +00:00
|
|
|
O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Spill";
|
2009-11-18 14:58:34 +00:00
|
|
|
Newline = true;
|
|
|
|
}
|
|
|
|
}
|
2009-12-15 18:09:07 +00:00
|
|
|
else if (TM.getInstrInfo()->hasStoreToStackSlot(&MI, MMO, FI)) {
|
2009-11-18 14:58:34 +00:00
|
|
|
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
|
|
|
|
if (Newline) O << '\n';
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
2009-12-15 18:09:07 +00:00
|
|
|
O << MAI->getCommentString() << ' '
|
|
|
|
<< MMO->getSize() << "-byte Folded Spill";
|
2009-11-18 14:58:34 +00:00
|
|
|
Newline = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check for spill-induced copies
|
|
|
|
unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
|
|
|
|
if (TM.getInstrInfo()->isMoveInstr(MI, SrcReg, DstReg,
|
|
|
|
SrcSubIdx, DstSubIdx)) {
|
|
|
|
if (MI.getAsmPrinterFlag(ReloadReuse)) {
|
|
|
|
if (Newline) O << '\n';
|
|
|
|
O.PadToColumn(MAI->getCommentColumn());
|
|
|
|
O << MAI->getCommentString() << " Reload Reuse";
|
|
|
|
}
|
2009-10-14 17:57:32 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|