//
//===----------------------------------------------------------------------===//
+#define DEBUG_TYPE "asm-printer"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/DerivedTypes.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/FormattedStream.h"
#include <cerrno>
using namespace llvm;
-static cl::opt<cl::boolOrDefault>
-AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
- cl::init(cl::BOU_UNSET));
+STATISTIC(EmittedInsts, "Number of machine instrs printed");
char AsmPrinter::ID = 0;
AsmPrinter::AsmPrinter(formatted_raw_ostream &o, TargetMachine &tm,
- const MCAsmInfo *T, bool VDef)
- : MachineFunctionPass(&ID), FunctionNumber(0), O(o),
+ MCContext &Ctx, MCStreamer &Streamer,
+ const MCAsmInfo *T)
+ : MachineFunctionPass(&ID), O(o),
TM(tm), MAI(T), TRI(tm.getRegisterInfo()),
-
- OutContext(*new MCContext()),
- // FIXME: Pass instprinter to streamer.
- OutStreamer(*createAsmStreamer(OutContext, O, *T, 0)),
-
+ OutContext(Ctx), OutStreamer(Streamer),
LastMI(0), LastFn(0), Counter(~0U), PrevDLT(NULL) {
DW = 0; MMI = 0;
- switch (AsmVerbose) {
- case cl::BOU_UNSET: VerboseAsm = VDef; break;
- case cl::BOU_TRUE: VerboseAsm = true; break;
- case cl::BOU_FALSE: VerboseAsm = false; break;
- }
+ VerboseAsm = Streamer.isVerboseAsm();
}
AsmPrinter::~AsmPrinter() {
delete &OutContext;
}
+/// getFunctionNumber - Return a unique ID for the current function.
+///
+unsigned AsmPrinter::getFunctionNumber() const {
+ return MF->getFunctionNumber();
+}
+
TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
return TM.getTargetLowering()->getObjFileLowering();
}
// Allow the target to emit any magic that it wants at the start of the file.
EmitStartOfAsmFile(M);
+ // Very minimal debug info. It is ignored if we emit actual debug info. If we
+ // don't, this at least helps the user find where a global came from.
if (MAI->hasSingleParameterDotFile()) {
- /* Very minimal debug info. It is ignored if we emit actual
- debug info. If we don't, this at least helps the user find where
- a function came from. */
- O << "\t.file\t\"" << M.getModuleIdentifier() << "\"\n";
+ // .file "foo.c"
+ OutStreamer.EmitFileDirective(M.getModuleIdentifier());
}
GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
return false;
}
+void AsmPrinter::EmitLinkage(unsigned Linkage, MCSymbol *GVSym) const {
+ switch ((GlobalValue::LinkageTypes)Linkage) {
+ case GlobalValue::CommonLinkage:
+ case GlobalValue::LinkOnceAnyLinkage:
+ case GlobalValue::LinkOnceODRLinkage:
+ case GlobalValue::WeakAnyLinkage:
+ case GlobalValue::WeakODRLinkage:
+ case GlobalValue::LinkerPrivateLinkage:
+ if (MAI->getWeakDefDirective() != 0) {
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
+ // .weak_definition _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
+ } else if (const char *LinkOnce = MAI->getLinkOnceDirective()) {
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
+ // FIXME: linkonce should be a section attribute, handled by COFF Section
+ // assignment.
+ // http://sourceware.org/binutils/docs-2.20/as/Linkonce.html#Linkonce
+ // .linkonce discard
+ // FIXME: It would be nice to use .linkonce samesize for non-common
+ // globals.
+ O << LinkOnce;
+ } else {
+ // .weak _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Weak);
+ }
+ break;
+ case GlobalValue::DLLExportLinkage:
+ case GlobalValue::AppendingLinkage:
+ // FIXME: appending linkage variables should go into a section of
+ // their name or something. For now, just emit them as external.
+ case GlobalValue::ExternalLinkage:
+ // If external or appending, declare as a global symbol.
+ // .globl _foo
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
+ break;
+ case GlobalValue::PrivateLinkage:
+ case GlobalValue::InternalLinkage:
+ break;
+ default:
+ llvm_unreachable("Unknown linkage type!");
+ }
+}
+
+
/// EmitGlobalVariable - Emit the specified global variable to the .s file.
void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
if (!GV->hasInitializer()) // External globals require no code.
return;
MCSymbol *GVSym = GetGlobalValueSymbol(GV);
- printVisibility(GVSym, GV->getVisibility());
+ EmitVisibility(GVSym, GV->getVisibility());
- if (MAI->hasDotTypeDotSizeDirective()) {
- O << "\t.type\t" << *GVSym;
- if (MAI->getCommentString()[0] != '@')
- O << ",@object\n";
- else
- O << ",%object\n";
- }
+ if (MAI->hasDotTypeDotSizeDirective())
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_ELF_TypeObject);
SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM);
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << ' ';
- WriteAsOperand(O, GV, /*PrintType=*/false, GV->getParent());
- O << '\n';
+ WriteAsOperand(OutStreamer.GetCommentOS(), GV,
+ /*PrintType=*/false, GV->getParent());
+ OutStreamer.GetCommentOS() << '\n';
}
// Handle common symbols.
return;
}
- if (const char *LComm = MAI->getLCOMMDirective()) {
+ if (MAI->hasLCOMMDirective()) {
// .lcomm _foo, 42
- O << LComm << *GVSym << ',' << Size;
- O << '\n';
+ OutStreamer.EmitLocalCommonSymbol(GVSym, Size);
return;
}
// .local _foo
- O << "\t.local\t" << *GVSym << '\n';
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Local);
// .comm _foo, 42, 4
OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
return;
// emission.
if (GVKind.isBSSExtern() && MAI->hasMachoZeroFillDirective()) {
// .globl _foo
- OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
+ OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
// .zerofill __DATA, __common, _foo, 400, 5
OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog);
return;
OutStreamer.SwitchSection(TheSection);
- // TODO: Factor into an 'emit linkage' thing that is shared with function
- // bodies.
- switch (GV->getLinkage()) {
- case GlobalValue::CommonLinkage:
- case GlobalValue::LinkOnceAnyLinkage:
- case GlobalValue::LinkOnceODRLinkage:
- case GlobalValue::WeakAnyLinkage:
- case GlobalValue::WeakODRLinkage:
- case GlobalValue::LinkerPrivateLinkage:
- if (MAI->getWeakDefDirective() != 0) {
- // .globl _foo
- OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
- // .weak_definition _foo
- OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::WeakDefinition);
- } else if (const char *LinkOnce = MAI->getLinkOnceDirective()) {
- // .globl _foo
- OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
- // .linkonce same_size
- O << LinkOnce;
- } else {
- // .weak _foo
- OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Weak);
- }
- break;
- case GlobalValue::DLLExportLinkage:
- case GlobalValue::AppendingLinkage:
- // FIXME: appending linkage variables should go into a section of
- // their name or something. For now, just emit them as external.
- case GlobalValue::ExternalLinkage:
- // If external or appending, declare as a global symbol.
- // .globl _foo
- OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global);
- break;
- case GlobalValue::PrivateLinkage:
- case GlobalValue::InternalLinkage:
- break;
- default:
- llvm_unreachable("Unknown linkage type!");
- }
-
+ EmitLinkage(GV->getLinkage(), GVSym);
EmitAlignment(AlignLog, GV);
+
if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << ' ';
- WriteAsOperand(O, GV, /*PrintType=*/false, GV->getParent());
- O << '\n';
+ WriteAsOperand(OutStreamer.GetCommentOS(), GV,
+ /*PrintType=*/false, GV->getParent());
+ OutStreamer.GetCommentOS() << '\n';
}
OutStreamer.EmitLabel(GVSym);
EmitGlobalConstant(GV->getInitializer());
if (MAI->hasDotTypeDotSizeDirective())
- O << "\t.size\t" << *GVSym << ", " << Size << '\n';
+ // .size foo, 42
+ OutStreamer.EmitELFSize(GVSym, MCConstantExpr::Create(Size, OutContext));
+
+ OutStreamer.AddBlankLine();
+}
+
+/// EmitFunctionHeader - This method emits the header for the current
+/// function.
+void AsmPrinter::EmitFunctionHeader() {
+ // Print out constants referenced by the function
+ EmitConstantPool();
+
+ // Print the 'header' of function.
+ const Function *F = MF->getFunction();
+
+ OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
+ EmitVisibility(CurrentFnSym, F->getVisibility());
+
+ EmitLinkage(F->getLinkage(), CurrentFnSym);
+ EmitAlignment(MF->getAlignment(), F);
+
+ if (MAI->hasDotTypeDotSizeDirective())
+ OutStreamer.EmitSymbolAttribute(CurrentFnSym, MCSA_ELF_TypeFunction);
+
+ if (VerboseAsm) {
+ WriteAsOperand(OutStreamer.GetCommentOS(), F,
+ /*PrintType=*/false, F->getParent());
+ OutStreamer.GetCommentOS() << '\n';
+ }
+
+ // Emit the CurrentFnSym. This is is a virtual function to allow targets to
+ // do their wild and crazy things as required.
+ EmitFunctionEntryLabel();
+
+ // Add some workaround for linkonce linkage on Cygwin\MinGW.
+ if (MAI->getLinkOnceDirective() != 0 &&
+ (F->hasLinkOnceLinkage() || F->hasWeakLinkage()))
+ // FIXME: What is this?
+ O << "Lllvm$workaround$fake$stub$" << *CurrentFnSym << ":\n";
+
+ // Emit pre-function debug and/or EH information.
+ if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
+ DW->BeginFunction(MF);
+}
+
+/// EmitFunctionEntryLabel - Emit the label that is the entrypoint for the
+/// function. This can be overridden by targets as required to do custom stuff.
+void AsmPrinter::EmitFunctionEntryLabel() {
+ OutStreamer.EmitLabel(CurrentFnSym);
+}
+
+
+/// EmitFunctionBody - This method emits the body and trailer for a
+/// function.
+void AsmPrinter::EmitFunctionBody() {
+ // Emit target-specific gunk before the function body.
+ EmitFunctionBodyStart();
+
+ // Print out code for the function.
+ bool HasAnyRealCode = false;
+ for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
+ I != E; ++I) {
+ // Print a label for the basic block.
+ EmitBasicBlockStart(I);
+ for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
+ II != IE; ++II) {
+ // Print the assembly for the instruction.
+ if (!II->isLabel())
+ HasAnyRealCode = true;
+
+ ++EmittedInsts;
+
+ // FIXME: Clean up processDebugLoc.
+ processDebugLoc(II, true);
+
+ switch (II->getOpcode()) {
+ case TargetOpcode::DBG_LABEL:
+ case TargetOpcode::EH_LABEL:
+ case TargetOpcode::GC_LABEL:
+ printLabelInst(II);
+ break;
+ case TargetOpcode::INLINEASM:
+ printInlineAsm(II);
+ break;
+ case TargetOpcode::IMPLICIT_DEF:
+ printImplicitDef(II);
+ break;
+ case TargetOpcode::KILL:
+ printKill(II);
+ break;
+ default:
+ EmitInstruction(II);
+ break;
+ }
+ if (VerboseAsm)
+ EmitComments(*II);
+
+ // FIXME: Clean up processDebugLoc.
+ processDebugLoc(II, false);
+ }
+ }
+
+ // If the function is empty and the object file uses .subsections_via_symbols,
+ // then we need to emit *something* to the function body to prevent the
+ // labels from collapsing together. Just emit a 0 byte.
+ if (MAI->hasSubsectionsViaSymbols() && !HasAnyRealCode)
+ OutStreamer.EmitIntValue(0, 1, 0/*addrspace*/);
+
+ // Emit target-specific gunk after the function body.
+ EmitFunctionBodyEnd();
+
+ if (MAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << *CurrentFnSym << ", .-" << *CurrentFnSym << '\n';
+
+ // Emit post-function debug information.
+ if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling())
+ DW->EndFunction(MF);
+
+ // Print out jump tables referenced by the function.
+ EmitJumpTableInfo();
+
+ OutStreamer.AddBlankLine();
}
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
if (!I->hasExternalWeakLinkage()) continue;
- O << MAI->getWeakRefDirective() << *GetGlobalValueSymbol(I) << '\n';
+ OutStreamer.EmitSymbolAttribute(GetGlobalValueSymbol(I),
+ MCSA_WeakReference);
}
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
if (!I->hasExternalWeakLinkage()) continue;
- O << MAI->getWeakRefDirective() << *GetGlobalValueSymbol(I) << '\n';
+ OutStreamer.EmitSymbolAttribute(GetGlobalValueSymbol(I),
+ MCSA_WeakReference);
}
}
- if (MAI->getSetDirective()) {
- O << '\n';
+ if (MAI->hasSetDirective()) {
+ OutStreamer.AddBlankLine();
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
I != E; ++I) {
MCSymbol *Name = GetGlobalValueSymbol(I);
MCSymbol *Target = GetGlobalValueSymbol(GV);
if (I->hasExternalLinkage() || !MAI->getWeakRefDirective())
- O << "\t.globl\t" << *Name << '\n';
+ OutStreamer.EmitSymbolAttribute(Name, MCSA_Global);
else if (I->hasWeakLinkage())
- O << MAI->getWeakRefDirective() << *Name << '\n';
+ OutStreamer.EmitSymbolAttribute(Name, MCSA_WeakReference);
else
assert(I->hasLocalLinkage() && "Invalid alias linkage");
- printVisibility(Name, I->getVisibility());
+ EmitVisibility(Name, I->getVisibility());
- O << MAI->getSetDirective() << ' ' << *Name << ", " << *Target << '\n';
+ // Emit the directives as assignments aka .set:
+ OutStreamer.EmitAssignment(Name,
+ MCSymbolRefExpr::Create(Target, OutContext));
}
}
// to be executable. Some targets have a directive to declare this.
Function *InitTrampolineIntrinsic = M.getFunction("llvm.init.trampoline");
if (!InitTrampolineIntrinsic || InitTrampolineIntrinsic->use_empty())
- if (MAI->getNonexecutableStackDirective())
- O << MAI->getNonexecutableStackDirective() << '\n';
-
+ if (MCSection *S = MAI->getNonexecutableStackSection(OutContext))
+ OutStreamer.SwitchSection(S);
// Allow the target to emit any magic that it wants at the end of the file,
// after everything else has gone out.
}
void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
+ this->MF = &MF;
// Get the function symbol.
CurrentFnSym = GetGlobalValueSymbol(MF.getFunction());
- IncrementFunctionNumber();
if (VerboseAsm)
LI = &getAnalysis<MachineLoopInfo>();
/// used to print out constants which have been "spilled to memory" by
/// the code generator.
///
-void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
+void AsmPrinter::EmitConstantPool() {
+ const MachineConstantPool *MCP = MF->getConstantPool();
const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
if (CP.empty()) return;
const Type *Ty = CPE.getType();
Offset = NewOffset + TM.getTargetData()->getTypeAllocSize(Ty);
- O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
- << CPI << ':';
+ // Emit the label with a comment on it.
if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " constant ";
- WriteTypeSymbolic(O, CPE.getType(), MF->getFunction()->getParent());
+ OutStreamer.GetCommentOS() << "constant pool ";
+ WriteTypeSymbolic(OutStreamer.GetCommentOS(), CPE.getType(),
+ MF->getFunction()->getParent());
+ OutStreamer.GetCommentOS() << '\n';
}
- O << '\n';
+ OutStreamer.EmitLabel(GetCPISymbol(CPI));
+
if (CPE.isMachineConstantPoolEntry())
EmitMachineConstantPoolValue(CPE.Val.MachineCPVal);
else
/// 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) {
+void AsmPrinter::EmitJumpTableInfo() {
+ const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
+ if (MJTI == 0) return;
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();
+ const Function *F = MF->getFunction();
bool JTInDiffSection = false;
- if (F->isWeakForLinker() ||
- (IsPic && !LoweringInfo->usesGlobalOffsetTable())) {
- // 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.
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang,
- TM));
+ if (// 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.
+ // FIXME: Need a better predicate for this: what about custom entries?
+ MJTI->getEntryKind() == MachineJumpTableInfo::EK_LabelDifference32 ||
+ // We should also do if the section name is NULL or function is declared
+ // in discardable section
+ // FIXME: this isn't the right predicate, should be based on the MCSection
+ // for the function.
+ F->isWeakForLinker()) {
+ OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F,Mang,TM));
} else {
// Otherwise, drop it in the readonly section.
const MCSection *ReadOnlySection =
OutStreamer.SwitchSection(ReadOnlySection);
JTInDiffSection = true;
}
+
+ EmitAlignment(Log2_32(MJTI->getEntryAlignment(*TM.getTargetData())));
- EmitAlignment(Log2_32(MJTI->getAlignment()));
-
- for (unsigned i = 0, e = JT.size(); i != e; ++i) {
- const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs;
+ for (unsigned JTI = 0, e = JT.size(); JTI != e; ++JTI) {
+ const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].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;
- if (MAI->getSetDirective() && IsPic)
- for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
- if (EmittedSets.insert(JTBBs[ii]))
- printPICJumpTableSetLabel(i, JTBBs[ii]);
+ // For the EK_LabelDifference32 entry, if the target supports .set, emit a
+ // .set directive for each unique entry. This reduces the number of
+ // relocations the assembler will generate for the jump table.
+ if (MJTI->getEntryKind() == MachineJumpTableInfo::EK_LabelDifference32 &&
+ MAI->hasSetDirective()) {
+ SmallPtrSet<const MachineBasicBlock*, 16> EmittedSets;
+ const TargetLowering *TLI = TM.getTargetLowering();
+ const MCExpr *Base = TLI->getPICJumpTableRelocBaseExpr(MF,JTI,OutContext);
+ for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
+ const MachineBasicBlock *MBB = JTBBs[ii];
+ if (!EmittedSets.insert(MBB)) continue;
+
+ // .set LJTSet, LBB32-base
+ const MCExpr *LHS =
+ MCSymbolRefExpr::Create(MBB->getSymbol(OutContext), OutContext);
+ OutStreamer.EmitAssignment(GetJTSetSymbol(JTI, MBB->getNumber()),
+ MCBinaryExpr::CreateSub(LHS, Base, OutContext));
+ }
+ }
// On some targets (e.g. Darwin) we want to emit two consequtive labels
// 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.
- if (JTInDiffSection && MAI->getLinkerPrivateGlobalPrefix()[0]) {
- O << MAI->getLinkerPrivateGlobalPrefix()
- << "JTI" << getFunctionNumber() << '_' << i << ":\n";
- }
-
- O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << i << ":\n";
-
- for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
- printPICJumpTableEntry(MJTI, JTBBs[ii], i);
- O << '\n';
- }
+ if (JTInDiffSection && MAI->getLinkerPrivateGlobalPrefix()[0])
+ // FIXME: This doesn't have to have any specific name, just any randomly
+ // named and numbered 'l' label would work. Simplify GetJTISymbol.
+ OutStreamer.EmitLabel(GetJTISymbol(JTI, true));
+
+ OutStreamer.EmitLabel(GetJTISymbol(JTI));
+
+ for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
+ EmitJumpTableEntry(MJTI, JTBBs[ii], JTI);
}
}
-void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
- const MachineBasicBlock *MBB,
- unsigned uid) const {
- bool isPIC = TM.getRelocationModel() == Reloc::PIC_;
-
- // Use JumpTableDirective otherwise honor the entry size from the jump table
- // info.
- const char *JTEntryDirective = MAI->getJumpTableDirective(isPIC);
- bool HadJTEntryDirective = JTEntryDirective != NULL;
- if (!HadJTEntryDirective) {
- JTEntryDirective = MJTI->getEntrySize() == 4 ?
- MAI->getData32bitsDirective() : MAI->getData64bitsDirective();
+/// EmitJumpTableEntry - Emit a jump table entry for the specified MBB to the
+/// current stream.
+void AsmPrinter::EmitJumpTableEntry(const MachineJumpTableInfo *MJTI,
+ const MachineBasicBlock *MBB,
+ unsigned UID) const {
+ const MCExpr *Value = 0;
+ switch (MJTI->getEntryKind()) {
+ case MachineJumpTableInfo::EK_Custom32:
+ Value = TM.getTargetLowering()->LowerCustomJumpTableEntry(MJTI, MBB, UID,
+ OutContext);
+ break;
+ case MachineJumpTableInfo::EK_BlockAddress:
+ // EK_BlockAddress - Each entry is a plain address of block, e.g.:
+ // .word LBB123
+ Value = MCSymbolRefExpr::Create(MBB->getSymbol(OutContext), OutContext);
+ break;
+ case MachineJumpTableInfo::EK_GPRel32BlockAddress: {
+ // EK_GPRel32BlockAddress - Each entry is an address of block, encoded
+ // with a relocation as gp-relative, e.g.:
+ // .gprel32 LBB123
+ MCSymbol *MBBSym = MBB->getSymbol(OutContext);
+ OutStreamer.EmitGPRel32Value(MCSymbolRefExpr::Create(MBBSym, OutContext));
+ return;
}
- 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.
- if (!isPIC) {
- O << *GetMBBSymbol(MBB->getNumber());
- } else if (MAI->getSetDirective()) {
- O << MAI->getPrivateGlobalPrefix() << getFunctionNumber()
- << '_' << uid << "_set_" << MBB->getNumber();
- } else {
- O << *GetMBBSymbol(MBB->getNumber());
- // If the arch uses custom Jump Table directives, don't calc relative to
- // JT
- if (!HadJTEntryDirective)
- O << '-' << MAI->getPrivateGlobalPrefix() << "JTI"
- << getFunctionNumber() << '_' << uid;
+ case MachineJumpTableInfo::EK_LabelDifference32: {
+ // EK_LabelDifference32 - Each entry is the address of the block minus
+ // the address of the jump table. This is used for PIC jump tables where
+ // gprel32 is not supported. e.g.:
+ // .word LBB123 - LJTI1_2
+ // If the .set directive is supported, this is emitted as:
+ // .set L4_5_set_123, LBB123 - LJTI1_2
+ // .word L4_5_set_123
+
+ // 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 (MAI->hasSetDirective()) {
+ // If we used .set, reference the .set's symbol.
+ Value = MCSymbolRefExpr::Create(GetJTSetSymbol(UID, MBB->getNumber()),
+ OutContext);
+ break;
+ }
+ // Otherwise, use the difference as the jump table entry.
+ Value = MCSymbolRefExpr::Create(MBB->getSymbol(OutContext), OutContext);
+ const MCExpr *JTI = MCSymbolRefExpr::Create(GetJTISymbol(UID), OutContext);
+ Value = MCBinaryExpr::CreateSub(Value, JTI, OutContext);
+ break;
+ }
}
+
+ assert(Value && "Unknown entry kind!");
+
+ unsigned EntrySize = MJTI->getEntrySize(*TM.getTargetData());
+ OutStreamer.EmitValue(Value, EntrySize, /*addrspace*/0);
}
/// do nothing and return false.
bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
if (GV->getName() == "llvm.used") {
- if (MAI->getUsedDirective() != 0) // No need to emit this at all.
+ if (MAI->hasNoDeadStrip()) // No need to emit this at all.
EmitLLVMUsedList(GV->getInitializer());
return true;
}
EmitXXStructorList(GV->getInitializer());
if (TM.getRelocationModel() == Reloc::Static &&
- MAI->hasStaticCtorDtorReferenceInStaticMode())
- O << ".reference .constructors_used\n";
+ MAI->hasStaticCtorDtorReferenceInStaticMode()) {
+ StringRef Sym(".constructors_used");
+ OutStreamer.EmitSymbolAttribute(OutContext.GetOrCreateSymbol(Sym),
+ MCSA_Reference);
+ }
return true;
}
EmitXXStructorList(GV->getInitializer());
if (TM.getRelocationModel() == Reloc::Static &&
- MAI->hasStaticCtorDtorReferenceInStaticMode())
- O << ".reference .destructors_used\n";
+ MAI->hasStaticCtorDtorReferenceInStaticMode()) {
+ StringRef Sym(".destructors_used");
+ OutStreamer.EmitSymbolAttribute(OutContext.GetOrCreateSymbol(Sym),
+ MCSA_Reference);
+ }
return true;
}
/// global in the specified llvm.used list for which emitUsedDirectiveFor
/// is true, as being used with this directive.
void AsmPrinter::EmitLLVMUsedList(Constant *List) {
- const char *Directive = MAI->getUsedDirective();
-
// Should be an array of 'i8*'.
ConstantArray *InitList = dyn_cast<ConstantArray>(List);
if (InitList == 0) return;
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
const GlobalValue *GV =
dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
- if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang)) {
- O << Directive;
- EmitConstantValueOnly(InitList->getOperand(i));
- O << '\n';
- }
+ if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang))
+ OutStreamer.EmitSymbolAttribute(GetGlobalValueSymbol(GV),
+ MCSA_NoDeadStrip);
}
}
}
}
-
-//===----------------------------------------------------------------------===//
-/// LEB 128 number encoding.
-
-/// PrintULEB128 - Print a series of hexadecimal values (separated by commas)
-/// representing an unsigned leb128 value.
-void AsmPrinter::PrintULEB128(unsigned Value) const {
- do {
- unsigned char Byte = static_cast<unsigned char>(Value & 0x7f);
- Value >>= 7;
- if (Value) Byte |= 0x80;
- PrintHex(Byte);
- if (Value) O << ", ";
- } while (Value);
-}
-
-/// PrintSLEB128 - Print a series of hexadecimal values (separated by commas)
-/// representing a signed leb128 value.
-void AsmPrinter::PrintSLEB128(int Value) const {
- int Sign = Value >> (8 * sizeof(Value) - 1);
- bool IsMore;
-
- do {
- unsigned char Byte = static_cast<unsigned char>(Value & 0x7f);
- Value >>= 7;
- IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
- if (IsMore) Byte |= 0x80;
- PrintHex(Byte);
- if (IsMore) O << ", ";
- } while (IsMore);
-}
-
//===--------------------------------------------------------------------===//
// Emission and print routines
//
-/// PrintHex - Print a value as a hexadecimal value.
-///
-void AsmPrinter::PrintHex(uint64_t Value) const {
- O << "0x";
- O.write_hex(Value);
-}
-
-/// EOL - Print a newline character to asm stream. If a comment is present
-/// then it will be printed first. Comments should not contain '\n'.
-void AsmPrinter::EOL() const {
- O << '\n';
-}
-
-void AsmPrinter::EOL(const Twine &Comment) const {
- if (VerboseAsm && !Comment.isTriviallyEmpty()) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << ' '
- << Comment;
- }
- O << '\n';
-}
-
-static const char *DecodeDWARFEncoding(unsigned Encoding) {
- switch (Encoding) {
- case dwarf::DW_EH_PE_absptr:
- return "absptr";
- case dwarf::DW_EH_PE_omit:
- return "omit";
- case dwarf::DW_EH_PE_pcrel:
- return "pcrel";
- case dwarf::DW_EH_PE_udata4:
- return "udata4";
- case dwarf::DW_EH_PE_udata8:
- return "udata8";
- case dwarf::DW_EH_PE_sdata4:
- return "sdata4";
- case dwarf::DW_EH_PE_sdata8:
- return "sdata8";
- case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata4:
- return "pcrel udata4";
- case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4:
- return "pcrel sdata4";
- case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8:
- return "pcrel udata8";
- case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8:
- return "pcrel sdata8";
- case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata4:
- return "indirect pcrel udata4";
- case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata4:
- return "indirect pcrel sdata4";
- case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata8:
- return "indirect pcrel udata8";
- case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata8:
- return "indirect pcrel sdata8";
- }
-
- return 0;
-}
-
-void AsmPrinter::EOL(const Twine &Comment, unsigned Encoding) const {
- if (VerboseAsm && !Comment.isTriviallyEmpty()) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << ' '
- << Comment;
-
- if (const char *EncStr = DecodeDWARFEncoding(Encoding))
- O << " (" << EncStr << ')';
- }
- O << '\n';
-}
-
-/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
-/// unsigned leb128 value.
-void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {
- if (MAI->hasLEB128()) {
- O << "\t.uleb128\t"
- << Value;
- } else {
- O << MAI->getData8bitsDirective();
- PrintULEB128(Value);
- }
-}
-
-/// EmitSLEB128Bytes - print an assembler byte data directive to compose a
-/// signed leb128 value.
-void AsmPrinter::EmitSLEB128Bytes(int Value) const {
- if (MAI->hasLEB128()) {
- O << "\t.sleb128\t"
- << Value;
- } else {
- O << MAI->getData8bitsDirective();
- PrintSLEB128(Value);
- }
-}
-
/// EmitInt8 - Emit a byte directive and value.
///
void AsmPrinter::EmitInt8(int Value) const {
- O << MAI->getData8bitsDirective();
- PrintHex(Value & 0xFF);
+ OutStreamer.EmitIntValue(Value, 1, 0/*addrspace*/);
}
/// EmitInt16 - Emit a short directive and value.
///
void AsmPrinter::EmitInt16(int Value) const {
- O << MAI->getData16bitsDirective();
- PrintHex(Value & 0xFFFF);
+ OutStreamer.EmitIntValue(Value, 2, 0/*addrspace*/);
}
/// EmitInt32 - Emit a long directive and value.
///
void AsmPrinter::EmitInt32(int Value) const {
- O << MAI->getData32bitsDirective();
- PrintHex(Value);
+ OutStreamer.EmitIntValue(Value, 4, 0/*addrspace*/);
}
/// EmitInt64 - Emit a long long directive and value.
///
void AsmPrinter::EmitInt64(uint64_t Value) const {
- if (MAI->getData64bitsDirective()) {
- O << MAI->getData64bitsDirective();
- PrintHex(Value);
- } else {
- if (TM.getTargetData()->isBigEndian()) {
- EmitInt32(unsigned(Value >> 32)); O << '\n';
- EmitInt32(unsigned(Value));
- } else {
- EmitInt32(unsigned(Value)); O << '\n';
- EmitInt32(unsigned(Value >> 32));
- }
- }
-}
-
-/// 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.
-///
-static void printStringChar(formatted_raw_ostream &O, unsigned char C) {
- 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;
- }
- }
-}
-
-/// EmitString - Emit a string with quotes and a null terminator.
-/// Special characters are emitted properly.
-/// \literal (Eg. '\t') \endliteral
-void AsmPrinter::EmitString(const StringRef String) const {
- EmitString(String.data(), String.size());
-}
-
-void AsmPrinter::EmitString(const char *String, unsigned Size) const {
- const char* AscizDirective = MAI->getAscizDirective();
- if (AscizDirective)
- O << AscizDirective;
- else
- O << MAI->getAsciiDirective();
- O << '\"';
- for (unsigned i = 0; i < Size; ++i)
- printStringChar(O, String[i]);
- if (AscizDirective)
- O << '\"';
- else
- O << "\\0\"";
+ OutStreamer.EmitIntValue(Value, 8, 0/*addrspace*/);
}
-
-/// EmitFile - Emit a .file directive.
-void AsmPrinter::EmitFile(unsigned Number, StringRef Name) const {
- 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
OutStreamer.EmitValueToAlignment(1 << NumBits, FillValue, 1, 0);
}
-// Print out the specified constant, without a storage class. Only the
-// constants valid in constant expressions can occur here.
-void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
- if (CV->isNullValue() || isa<UndefValue>(CV)) {
- O << '0';
- return;
- }
-
- if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- O << CI->getZExtValue();
- return;
- }
+/// LowerConstant - Lower the specified LLVM Constant to an MCExpr.
+///
+static const MCExpr *LowerConstant(const Constant *CV, AsmPrinter &AP) {
+ MCContext &Ctx = AP.OutContext;
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
- // This is a constant address for a global variable or function. Use the
- // name of the variable or function as the address value.
- O << *GetGlobalValueSymbol(GV);
- return;
- }
+ 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);
- if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV)) {
- O << *GetBlockAddressSymbol(BA);
- return;
- }
+ 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);
const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV);
if (CE == 0) {
- llvm_unreachable("Unknown constant value!");
- O << '0';
- return;
+ llvm_unreachable("Unknown constant value to lower!");
+ return MCConstantExpr::Create(0, Ctx);
}
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:
default:
- llvm_unreachable("FIXME: Don't support this constant cast expr");
+ // If the code isn't optimized, there may be outstanding folding
+ // opportunities. Attempt to fold the expression using TargetData as a
+ // last resort before giving up.
+ if (Constant *C =
+ ConstantFoldConstantExpression(CE, AP.TM.getTargetData()))
+ if (C != CE)
+ return LowerConstant(C, AP);
+#ifndef NDEBUG
+ CE->dump();
+#endif
+ llvm_unreachable("FIXME: Don't support this constant expr");
case Instruction::GetElementPtr: {
- // generate a symbolic expression for the byte address
- const TargetData *TD = TM.getTargetData();
- 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 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);
if (Offset == 0)
- return EmitConstantValueOnly(ptrVal);
+ return Base;
// Truncate/sext the offset to the pointer size.
- if (TD->getPointerSizeInBits() != 64) {
- int SExtAmount = 64-TD->getPointerSizeInBits();
+ if (TD.getPointerSizeInBits() != 64) {
+ int SExtAmount = 64-TD.getPointerSizeInBits();
Offset = (Offset << SExtAmount) >> SExtAmount;
}
- if (Offset)
- O << '(';
- EmitConstantValueOnly(ptrVal);
- if (Offset > 0)
- O << ") + " << Offset;
- else
- O << ") - " << -Offset;
- return;
+ return MCBinaryExpr::CreateAdd(Base, MCConstantExpr::Create(Offset, Ctx),
+ Ctx);
}
+
+ 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.
case Instruction::BitCast:
- return EmitConstantValueOnly(CE->getOperand(0));
+ return LowerConstant(CE->getOperand(0), AP);
case Instruction::IntToPtr: {
+ const TargetData &TD = *AP.TM.getTargetData();
// Handle casts to pointers by changing them into casts to the appropriate
// integer type. This promotes constant folding and simplifies this code.
- const TargetData *TD = TM.getTargetData();
Constant *Op = CE->getOperand(0);
- Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(CV->getContext()),
+ Op = ConstantExpr::getIntegerCast(Op, TD.getIntPtrType(CV->getContext()),
false/*ZExt*/);
- return EmitConstantValueOnly(Op);
+ return LowerConstant(Op, AP);
}
case Instruction::PtrToInt: {
+ const TargetData &TD = *AP.TM.getTargetData();
// 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();
- const TargetData *TD = TM.getTargetData();
+
+ const MCExpr *OpExpr = LowerConstant(Op, AP);
// We can emit the pointer value into this slot if the slot is an
- // integer slot greater or equal to the size of the pointer.
- if (TD->getTypeAllocSize(Ty) == TD->getTypeAllocSize(Op->getType()))
- return EmitConstantValueOnly(Op);
-
- O << "((";
- EmitConstantValueOnly(Op);
- APInt ptrMask =
- APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Op->getType()));
-
- SmallString<40> S;
- ptrMask.toStringUnsigned(S);
- O << ") & " << S.str() << ')';
- return;
+ // 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);
}
- 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.
- return EmitConstantValueOnly(CE->getOperand(0));
-
+ // The MC library also has a right-shift operator, but it isn't consistently
+ // signed or unsigned between different targets.
case Instruction::Add:
case Instruction::Sub:
+ case Instruction::Mul:
+ case Instruction::SDiv:
+ case Instruction::SRem:
+ case Instruction::Shl:
case Instruction::And:
case Instruction::Or:
- case Instruction::Xor:
- O << '(';
- EmitConstantValueOnly(CE->getOperand(0));
- O << ')';
+ case Instruction::Xor: {
+ const MCExpr *LHS = LowerConstant(CE->getOperand(0), AP);
+ const MCExpr *RHS = LowerConstant(CE->getOperand(1), AP);
switch (CE->getOpcode()) {
- case Instruction::Add:
- O << " + ";
- break;
- case Instruction::Sub:
- O << " - ";
- break;
- case Instruction::And:
- O << " & ";
- break;
- case Instruction::Or:
- O << " | ";
- break;
- case Instruction::Xor:
- O << " ^ ";
- break;
- default:
- break;
+ 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::Mul: return MCBinaryExpr::CreateMul(LHS, RHS, Ctx);
+ case Instruction::SDiv: return MCBinaryExpr::CreateDiv(LHS, RHS, Ctx);
+ case Instruction::SRem: return MCBinaryExpr::CreateMod(LHS, RHS, Ctx);
+ case Instruction::Shl: return MCBinaryExpr::CreateShl(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);
}
- O << '(';
- EmitConstantValueOnly(CE->getOperand(1));
- O << ')';
- break;
- }
-}
-
-/// EmitZeros - Emit a block of zeros.
-///
-void AsmPrinter::EmitZeros(uint64_t NumZeros, unsigned AddrSpace) const {
- OutStreamer.EmitFill(NumZeros, 0, AddrSpace);
-}
-
-/// printAsCString - Print the specified array as a C compatible string, only if
-/// the predicate isString is true.
-///
-static void printAsCString(formatted_raw_ostream &O, const ConstantArray *CVA,
- unsigned LastElt) {
- assert(CVA->isString() && "Array is not string compatible!");
-
- O << '\"';
- for (unsigned i = 0; i != LastElt; ++i) {
- unsigned char C =
- (unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getZExtValue();
- printStringChar(O, C);
}
- O << '\"';
-}
-
-/// EmitString - Emit a zero-byte-terminated string constant.
-///
-void AsmPrinter::EmitString(const ConstantArray *CVA) const {
- unsigned NumElts = CVA->getNumOperands();
- if (MAI->getAscizDirective() && NumElts &&
- cast<ConstantInt>(CVA->getOperand(NumElts-1))->getZExtValue() == 0) {
- O << MAI->getAscizDirective();
- printAsCString(O, CVA, NumElts-1);
- } else {
- O << MAI->getAsciiDirective();
- printAsCString(O, CVA, NumElts);
}
- O << '\n';
}
static void EmitGlobalConstantArray(const ConstantArray *CA, unsigned AddrSpace,
AsmPrinter &AP) {
- if (AddrSpace == 0 && CA->isString()) {
- AP.EmitString(CA);
- } else { // Not a string. Print the values in successive locations
+ 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;
}
+
+ // 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());
+
+ AP.OutStreamer.EmitBytes(StringRef(TmpVec.data(), TmpVec.size()), AddrSpace);
}
static void EmitGlobalConstantVector(const ConstantVector *CV,
unsigned AddrSpace, AsmPrinter &AP) {
- const VectorType *VTy = CV->getType();
- for (unsigned i = 0, e = VTy->getNumElements(); i != e; ++i)
+ for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i)
AP.EmitGlobalConstant(CV->getOperand(i), AddrSpace);
}
// Print the fields in successive locations. Pad to align if needed!
const TargetData *TD = AP.TM.getTargetData();
unsigned Size = TD->getTypeAllocSize(CS->getType());
- const StructLayout *cvsLayout = TD->getStructLayout(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);
+ const Constant *Field = CS->getOperand(i);
// Check if padding is needed and insert one or more 0s.
- uint64_t fieldSize = TD->getTypeAllocSize(field->getType());
- uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
- - cvsLayout->getElementOffset(i)) - fieldSize;
- SizeSoFar += fieldSize + padSize;
+ 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;
// Now print the actual field value.
- AP.EmitGlobalConstant(field, AddrSpace);
+ AP.EmitGlobalConstant(Field, AddrSpace);
// 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.
- AP.EmitZeros(padSize, AddrSpace);
+ AP.OutStreamer.EmitZeros(PadSize, AddrSpace);
}
- assert(SizeSoFar == cvsLayout->getSizeInBytes() &&
+ assert(SizeSoFar == Layout->getSizeInBytes() &&
"Layout of constant struct may be incorrect!");
}
-void AsmPrinter::EmitGlobalConstantFP(const ConstantFP *CFP,
- unsigned AddrSpace) {
+static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
+ AsmPrinter &AP) {
// FP Constants are printed as integer constants to avoid losing
- // precision...
- const TargetData &TD = *TM.getTargetData();
+ // precision.
if (CFP->getType()->isDoubleTy()) {
- double Val = CFP->getValueAPF().convertToDouble(); // for comment only
- uint64_t i = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- if (MAI->getData64bitsDirective(AddrSpace)) {
- O << MAI->getData64bitsDirective(AddrSpace) << i;
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " double " << Val;
- }
- O << '\n';
- } else if (TD.isBigEndian()) {
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word of double " << Val;
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word of double " << Val;
- }
- O << '\n';
- } else {
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word of double " << Val;
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << unsigned(i >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word of double " << Val;
- }
- O << '\n';
+ if (AP.VerboseAsm) {
+ double Val = CFP->getValueAPF().convertToDouble();
+ AP.OutStreamer.GetCommentOS() << "double " << Val << '\n';
}
+
+ uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
+ AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
return;
}
if (CFP->getType()->isFloatTy()) {
- float Val = CFP->getValueAPF().convertToFloat(); // for comment only
- O << MAI->getData32bitsDirective(AddrSpace)
- << CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " float " << Val;
+ if (AP.VerboseAsm) {
+ float Val = CFP->getValueAPF().convertToFloat();
+ AP.OutStreamer.GetCommentOS() << "float " << Val << '\n';
}
- O << '\n';
+ uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
+ AP.OutStreamer.EmitIntValue(Val, 4, AddrSpace);
return;
}
if (CFP->getType()->isX86_FP80Ty()) {
// 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();
- // 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);
- if (TD.isBigEndian()) {
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant halfword of x86_fp80 ~"
- << DoubleVal.convertToDouble();
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 48);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 16);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant halfword";
- }
- O << '\n';
- } else {
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant halfword of x86_fp80 ~"
- << DoubleVal.convertToDouble();
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 16);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[0] >> 48);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next halfword";
- }
- O << '\n';
- O << MAI->getData16bitsDirective(AddrSpace) << uint16_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant halfword";
- }
- O << '\n';
+ 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';
}
- LLVMContext &Context = CFP->getContext();
- EmitZeros(TD.getTypeAllocSize(Type::getX86_FP80Ty(Context)) -
- TD.getTypeStoreSize(Type::getX86_FP80Ty(Context)), AddrSpace);
+
+ 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);
return;
}
- if (CFP->getType()->isPPC_FP128Ty()) {
- // 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 (TD.isBigEndian()) {
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word of ppc_fp128";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word";
- }
- O << '\n';
- } else {
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " least significant word of ppc_fp128";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[1] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0]);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " next word";
- }
- O << '\n';
- O << MAI->getData32bitsDirective(AddrSpace) << uint32_t(p[0] >> 32);
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << " most significant word";
- }
- O << '\n';
- }
- return;
- } else llvm_unreachable("Floating point constant type not handled");
+ 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);
+ }
}
-void AsmPrinter::EmitGlobalConstantLargeInt(const ConstantInt *CI,
- unsigned AddrSpace) {
- const TargetData *TD = TM.getTargetData();
+static void EmitGlobalConstantLargeInt(const ConstantInt *CI,
+ unsigned AddrSpace, AsmPrinter &AP) {
+ const TargetData *TD = AP.TM.getTargetData();
unsigned BitWidth = CI->getBitWidth();
assert((BitWidth & 63) == 0 && "only support multiples of 64-bits");
// quantities at a time.
const uint64_t *RawData = CI->getValue().getRawData();
for (unsigned i = 0, e = BitWidth / 64; i != e; ++i) {
- uint64_t Val;
- if (TD->isBigEndian())
- Val = RawData[e - i - 1];
- else
- Val = RawData[i];
-
- if (MAI->getData64bitsDirective(AddrSpace)) {
- O << MAI->getData64bitsDirective(AddrSpace) << Val << '\n';
- continue;
- }
-
- // Emit two 32-bit chunks, order depends on endianness.
- unsigned FirstChunk = unsigned(Val), SecondChunk = unsigned(Val >> 32);
- const char *FirstName = " least", *SecondName = " most";
- if (TD->isBigEndian()) {
- std::swap(FirstChunk, SecondChunk);
- std::swap(FirstName, SecondName);
- }
-
- O << MAI->getData32bitsDirective(AddrSpace) << FirstChunk;
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << FirstName << " significant half of i64 " << Val;
- }
- O << '\n';
-
- O << MAI->getData32bitsDirective(AddrSpace) << SecondChunk;
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString()
- << SecondName << " significant half of i64 " << Val;
- }
- O << '\n';
+ uint64_t Val = TD->isBigEndian() ? RawData[e - i - 1] : RawData[i];
+ AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
}
}
/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
- const TargetData *TD = TM.getTargetData();
- const Type *type = CV->getType();
- unsigned Size = TD->getTypeAllocSize(type);
+ if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV)) {
+ uint64_t Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+ if (Size == 0) Size = 1; // An empty "_foo:" followed by a section is undef.
+ return OutStreamer.EmitZeros(Size, AddrSpace);
+ }
- if (CV->isNullValue() || isa<UndefValue>(CV))
- return EmitZeros(Size, AddrSpace);
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+ 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);
+ return;
+ }
+ }
if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV))
return EmitGlobalConstantArray(CVA, AddrSpace, *this);
return EmitGlobalConstantStruct(CVS, AddrSpace, *this);
if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
- return EmitGlobalConstantFP(CFP, AddrSpace);
-
- if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- // If we can directly emit an 8-byte constant, do it.
- if (Size == 8)
- if (const char *Data64Dir = MAI->getData64bitsDirective(AddrSpace)) {
- O << Data64Dir << CI->getZExtValue() << '\n';
- return;
- }
-
- // Small integers are handled below; large integers are handled here.
- if (Size > 4) {
- EmitGlobalConstantLargeInt(CI, AddrSpace);
- return;
- }
- }
+ return EmitGlobalConstantFP(CFP, AddrSpace, *this);
if (const ConstantVector *V = dyn_cast<ConstantVector>(CV))
return EmitGlobalConstantVector(V, AddrSpace, *this);
- printDataDirective(type, AddrSpace);
- EmitConstantValueOnly(CV);
- if (VerboseAsm) {
- if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- SmallString<40> S;
- CI->getValue().toStringUnsigned(S, 16);
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " 0x" << S.str();
- }
+ if (isa<ConstantPointerNull>(CV)) {
+ unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+ OutStreamer.EmitIntValue(0, Size, AddrSpace);
+ return;
}
- O << '\n';
+
+ // 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);
}
void AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
if (CurDLT.getScope().isNull())
return;
- if (BeforePrintingInsn) {
- 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();
- }
- } else {
+ if (!BeforePrintingInsn) {
// After printing instruction
DW->EndScope(MI);
+ } 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();
}
}
++OpNo; // Skip over the ID number.
if (Modifier[0] == 'l') // labels are target independent
- O << *GetMBBSymbol(MI->getOperand(OpNo).getMBB()->getNumber());
+ O << *MI->getOperand(OpNo).getMBB()->getSymbol(OutContext);
else {
AsmPrinter *AP = const_cast<AsmPrinter*>(this);
if ((OpFlags & 7) == 4) {
}
}
O << "\n\t" << MAI->getCommentString() << MAI->getInlineAsmEnd();
+ OutStreamer.AddBlankLine();
}
/// printImplicitDef - This method prints the specified machine instruction
O.PadToColumn(MAI->getCommentColumn());
O << MAI->getCommentString() << " implicit-def: "
<< TRI->getName(MI->getOperand(0).getReg());
+ OutStreamer.AddBlankLine();
}
void AsmPrinter::printKill(const MachineInstr *MI) const {
assert(op.isReg() && "KILL instruction must have only register operands");
O << ' ' << TRI->getName(op.getReg()) << (op.isDef() ? "<def>" : "<kill>");
}
+ OutStreamer.AddBlankLine();
}
/// printLabel - This method prints a local label used by debug and
/// exception handling tables.
-void AsmPrinter::printLabel(const MachineInstr *MI) const {
+void AsmPrinter::printLabelInst(const MachineInstr *MI) const {
printLabel(MI->getOperand(0).getImm());
+ OutStreamer.AddBlankLine();
}
void AsmPrinter::printLabel(unsigned Id) const {
return true;
}
-MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA,
- const char *Suffix) const {
- return GetBlockAddressSymbol(BA->getFunction(), BA->getBasicBlock(), Suffix);
+MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA) const {
+ return GetBlockAddressSymbol(BA->getFunction(), BA->getBasicBlock());
}
MCSymbol *AsmPrinter::GetBlockAddressSymbol(const Function *F,
- const BasicBlock *BB,
- const char *Suffix) const {
+ const BasicBlock *BB) const {
assert(BB->hasName() &&
"Address of anonymous basic block not supported yet!");
SmallString<60> NameResult;
Mang->getNameWithPrefix(NameResult,
StringRef("BA") + Twine((unsigned)FnName.size()) +
- "_" + FnName.str() + "_" + BB->getName() + Suffix,
+ "_" + FnName.str() + "_" + BB->getName(),
Mangler::Private);
return OutContext.GetOrCreateSymbol(NameResult.str());
}
-MCSymbol *AsmPrinter::GetMBBSymbol(unsigned MBBID) const {
+/// 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() << "BB"
- << getFunctionNumber() << '_' << MBBID;
-
+ 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 {
+ return MF->getJTISymbol(JTID, OutContext, isLinkerPrivate);
+}
+
+/// GetJTSetSymbol - Return the symbol for the specified jump table .set
+/// FIXME: privatize to AsmPrinter.
+MCSymbol *AsmPrinter::GetJTSetSymbol(unsigned UID, unsigned MBBID) const {
+ SmallString<60> Name;
+ raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix()
+ << getFunctionNumber() << '_' << UID << "_set_" << MBBID;
return OutContext.GetOrCreateSymbol(Name.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);
+ }
+}
+
+/// PrintBasicBlockLoopComments - 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());
+}
+
+
/// EmitBasicBlockStart - This method prints the label for the specified
/// MachineBasicBlock, an alignment (if present) and a comment describing
/// it if appropriate.
// forward references to labels without knowing what their numbers
// will be.
if (MBB->hasAddressTaken()) {
- O << *GetBlockAddressSymbol(MBB->getBasicBlock()->getParent(),
- MBB->getBasicBlock());
- O << ':';
- if (VerboseAsm) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " Address Taken";
- }
- O << '\n';
+ const BasicBlock *BB = MBB->getBasicBlock();
+ if (VerboseAsm)
+ OutStreamer.AddComment("Address Taken");
+ OutStreamer.EmitLabel(GetBlockAddressSymbol(BB->getParent(), BB));
}
// Print the main label for the block.
if (MBB->pred_empty() || MBB->isOnlyReachableByFallthrough()) {
- if (VerboseAsm)
+ if (VerboseAsm) {
+ // NOTE: Want this comment at start of line.
O << MAI->getCommentString() << " BB#" << MBB->getNumber() << ':';
+ if (const BasicBlock *BB = MBB->getBasicBlock())
+ if (BB->hasName())
+ OutStreamer.AddComment("%" + BB->getName());
+
+ PrintBasicBlockLoopComments(*MBB, LI, *this);
+ OutStreamer.AddBlankLine();
+ }
} else {
- O << *GetMBBSymbol(MBB->getNumber()) << ':';
- if (!VerboseAsm)
- O << '\n';
- }
-
- // Print some comments to accompany the label.
- if (VerboseAsm) {
- if (const BasicBlock *BB = MBB->getBasicBlock())
- if (BB->hasName()) {
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << ' ';
- WriteAsOperand(O, BB, /*PrintType=*/false);
- }
+ if (VerboseAsm) {
+ if (const BasicBlock *BB = MBB->getBasicBlock())
+ if (BB->hasName())
+ OutStreamer.AddComment("%" + BB->getName());
+ PrintBasicBlockLoopComments(*MBB, LI, *this);
+ }
- EmitComments(*MBB);
- O << '\n';
+ OutStreamer.EmitLabel(MBB->getSymbol(OutContext));
}
}
-/// printPICJumpTableSetLabel - This method prints a set label for the
-/// specified MachineBasicBlock for a jumptable entry.
-void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
- const MachineBasicBlock *MBB) const {
- if (!MAI->getSetDirective())
- return;
-
- O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
- << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ','
- << *GetMBBSymbol(MBB->getNumber())
- << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << uid << '\n';
-}
-
-void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
- const MachineBasicBlock *MBB) const {
- if (!MAI->getSetDirective())
- return;
+void AsmPrinter::EmitVisibility(MCSymbol *Sym, unsigned Visibility) const {
+ MCSymbolAttr Attr = MCSA_Invalid;
- O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
- << getFunctionNumber() << '_' << uid << '_' << uid2
- << "_set_" << MBB->getNumber() << ','
- << *GetMBBSymbol(MBB->getNumber())
- << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
- << '_' << uid << '_' << uid2 << '\n';
-}
-
-/// printDataDirective - This method prints the asm directive for the
-/// specified type.
-void AsmPrinter::printDataDirective(const Type *type, unsigned AddrSpace) {
- const TargetData *TD = TM.getTargetData();
- switch (type->getTypeID()) {
- case Type::FloatTyID: case Type::DoubleTyID:
- case Type::X86_FP80TyID: case Type::FP128TyID: case Type::PPC_FP128TyID:
- assert(0 && "Should have already output floating point constant.");
- default:
- assert(0 && "Can't handle printing this type of thing");
- case Type::IntegerTyID: {
- unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
- if (BitWidth <= 8)
- O << MAI->getData8bitsDirective(AddrSpace);
- else if (BitWidth <= 16)
- O << MAI->getData16bitsDirective(AddrSpace);
- else if (BitWidth <= 32)
- O << MAI->getData32bitsDirective(AddrSpace);
- else if (BitWidth <= 64) {
- assert(MAI->getData64bitsDirective(AddrSpace) &&
- "Target cannot handle 64-bit constant exprs!");
- O << MAI->getData64bitsDirective(AddrSpace);
- } else {
- llvm_unreachable("Target cannot handle given data directive width!");
- }
+ switch (Visibility) {
+ default: break;
+ case GlobalValue::HiddenVisibility:
+ Attr = MAI->getHiddenVisibilityAttr();
break;
- }
- case Type::PointerTyID:
- if (TD->getPointerSize() == 8) {
- assert(MAI->getData64bitsDirective(AddrSpace) &&
- "Target cannot handle 64-bit pointer exprs!");
- O << MAI->getData64bitsDirective(AddrSpace);
- } else if (TD->getPointerSize() == 2) {
- O << MAI->getData16bitsDirective(AddrSpace);
- } else if (TD->getPointerSize() == 1) {
- O << MAI->getData8bitsDirective(AddrSpace);
- } else {
- O << MAI->getData32bitsDirective(AddrSpace);
- }
+ case GlobalValue::ProtectedVisibility:
+ Attr = MAI->getProtectedVisibilityAttr();
break;
}
-}
-void AsmPrinter::printVisibility(const MCSymbol *Sym,
- unsigned Visibility) const {
- if (Visibility == GlobalValue::HiddenVisibility) {
- if (const char *Directive = MAI->getHiddenDirective())
- O << Directive << *Sym << '\n';
- } else if (Visibility == GlobalValue::ProtectedVisibility) {
- if (const char *Directive = MAI->getProtectedDirective())
- O << Directive << *Sym << '\n';
- }
+ if (Attr != MCSA_Invalid)
+ OutStreamer.EmitSymbolAttribute(Sym, Attr);
}
void AsmPrinter::printOffset(int64_t Offset) const {
return GMP;
}
- errs() << "no GCMetadataPrinter registered for GC: " << Name << "\n";
- llvm_unreachable(0);
+ llvm_report_error("no GCMetadataPrinter registered for GC: " + Twine(Name));
+ return 0;
}
/// EmitComments - Pretty-print comments for instructions
if (!VerboseAsm)
return;
- bool Newline = false;
-
if (!MI.getDebugLoc().isUnknown()) {
DILocation DLT = MF->getDILocation(MI.getDebugLoc());
O << ':' << DLT.getLineNumber();
if (DLT.getColumnNumber() != 0)
O << ':' << DLT.getColumnNumber();
- Newline = true;
+ O << '\n';
}
// Check for spills and reloads
if (TM.getInstrInfo()->isLoadFromStackSlotPostFE(&MI, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
MMO = *MI.memoperands_begin();
- if (Newline) O << '\n';
O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Reload";
- Newline = true;
+ O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Reload\n";
}
}
else if (TM.getInstrInfo()->hasLoadFromStackSlot(&MI, MMO, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
- if (Newline) O << '\n';
O.PadToColumn(MAI->getCommentColumn());
O << MAI->getCommentString() << ' '
- << MMO->getSize() << "-byte Folded Reload";
- Newline = true;
+ << MMO->getSize() << "-byte Folded Reload\n";
}
}
else if (TM.getInstrInfo()->isStoreToStackSlotPostFE(&MI, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
MMO = *MI.memoperands_begin();
- if (Newline) O << '\n';
O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Spill";
- Newline = true;
+ O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Spill\n";
}
}
else if (TM.getInstrInfo()->hasStoreToStackSlot(&MI, MMO, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
- if (Newline) O << '\n';
O.PadToColumn(MAI->getCommentColumn());
O << MAI->getCommentString() << ' '
- << MMO->getSize() << "-byte Folded Spill";
- Newline = true;
+ << MMO->getSize() << "-byte Folded Spill\n";
}
}
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";
+ O << MAI->getCommentString() << " Reload Reuse\n";
}
}
}
-/// PrintChildLoopComment - Print comments about child loops within
-/// the loop for this basic block, with nesting.
-///
-static void PrintChildLoopComment(formatted_raw_ostream &O,
- const MachineLoop *loop,
- const MCAsmInfo *MAI,
- int FunctionNumber) {
- // Add child loop information
- for(MachineLoop::iterator cl = loop->begin(),
- clend = loop->end();
- cl != clend;
- ++cl) {
- MachineBasicBlock *Header = (*cl)->getHeader();
- assert(Header && "No header for loop");
-
- O << '\n';
- O.PadToColumn(MAI->getCommentColumn());
-
- O << MAI->getCommentString();
- O.indent(((*cl)->getLoopDepth()-1)*2)
- << " Child Loop BB" << FunctionNumber << "_"
- << Header->getNumber() << " Depth " << (*cl)->getLoopDepth();
-
- PrintChildLoopComment(O, *cl, MAI, FunctionNumber);
- }
-}
-
-/// EmitComments - Pretty-print comments for basic blocks
-void AsmPrinter::EmitComments(const MachineBasicBlock &MBB) const {
- if (VerboseAsm) {
- // Add loop depth information
- const MachineLoop *loop = LI->getLoopFor(&MBB);
-
- if (loop) {
- // Print a newline after bb# annotation.
- O << "\n";
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " Loop Depth " << loop->getLoopDepth()
- << '\n';
-
- O.PadToColumn(MAI->getCommentColumn());
-
- MachineBasicBlock *Header = loop->getHeader();
- assert(Header && "No header for loop");
-
- if (Header == &MBB) {
- O << MAI->getCommentString() << " Loop Header";
- PrintChildLoopComment(O, loop, MAI, getFunctionNumber());
- }
- else {
- O << MAI->getCommentString() << " Loop Header is BB"
- << getFunctionNumber() << "_" << loop->getHeader()->getNumber();
- }
-
- if (loop->empty()) {
- O << '\n';
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString() << " Inner Loop";
- }
-
- // Add parent loop information
- for (const MachineLoop *CurLoop = loop->getParentLoop();
- CurLoop;
- CurLoop = CurLoop->getParentLoop()) {
- MachineBasicBlock *Header = CurLoop->getHeader();
- assert(Header && "No header for loop");
-
- O << '\n';
- O.PadToColumn(MAI->getCommentColumn());
- O << MAI->getCommentString();
- O.indent((CurLoop->getLoopDepth()-1)*2)
- << " Inside Loop BB" << getFunctionNumber() << "_"
- << Header->getNumber() << " Depth " << CurLoop->getLoopDepth();
- }
- }
- }
-}
projects / oota-llvm.git / blobdiff