#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/Analysis/DebugInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/Mangler.h"
-#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/SmallPtrSet.h"
const TargetAsmInfo *T, bool VDef)
: MachineFunctionPass(&ID), FunctionNumber(0), O(o),
TM(tm), TAI(T), TRI(tm.getRegisterInfo()),
+
+ OutContext(*new MCContext()),
+ OutStreamer(*createAsmStreamer(OutContext, O)),
+
IsInTextSection(false), LastMI(0), LastFn(0), Counter(~0U),
PrevDLT(0, ~0U, ~0U) {
DW = 0; MMI = 0;
for (gcp_iterator I = GCMetadataPrinters.begin(),
E = GCMetadataPrinters.end(); I != E; ++I)
delete I->second;
+
+ delete &OutStreamer;
+ delete &OutContext;
+}
+
+const TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
+ return TM.getTargetLowering()->getObjFileLowering();
}
+
/// SwitchToTextSection - Switch to the specified text section of the executable
/// if we are not already in it!
///
/// SwitchToSection - Switch to the specified section of the executable if we
/// are not already in it!
-void AsmPrinter::SwitchToSection(const Section* NS) {
- const std::string& NewSection = NS->getName();
+void AsmPrinter::SwitchToSection(const MCSection *NS) {
+ const std::string &NewSection = NS->getName();
// If we're already in this section, we're done.
if (CurrentSection == NewSection) return;
// If section is named we need to switch into it via special '.section'
// directive and also append funky flags. Otherwise - section name is just
// some magic assembler directive.
- if (NS->isNamed())
+ if (!NS->isDirective()) {
+ SmallString<32> FlagsStr;
+
+ getObjFileLowering().getSectionFlagsAsString(NS->getKind(), FlagsStr);
+
O << TAI->getSwitchToSectionDirective()
<< CurrentSection
- << TAI->getSectionFlags(NS->getFlags());
- else
+ << FlagsStr.c_str();
+ } else {
O << CurrentSection;
+ }
O << TAI->getDataSectionStartSuffix() << '\n';
}
- IsInTextSection = (NS->getFlags() & SectionFlags::Code);
+ IsInTextSection = NS->getKind().isText();
}
void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
MachineFunctionPass::getAnalysisUsage(AU);
AU.addRequired<GCModuleInfo>();
}
bool AsmPrinter::doInitialization(Module &M) {
- Mang = new Mangler(M, TAI->getGlobalPrefix(), TAI->getPrivateGlobalPrefix());
+ // Initialize TargetLoweringObjectFile.
+ const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
+ .Initialize(OutContext, TM);
+
+ Mang = new Mangler(M, TAI->getGlobalPrefix(), TAI->getPrivateGlobalPrefix(),
+ TAI->getLinkerPrivateGlobalPrefix());
if (TAI->doesAllowQuotesInName())
Mang->setUseQuotes(true);
}
bool AsmPrinter::doFinalization(Module &M) {
+ // Emit global variables.
+ for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I)
+ PrintGlobalVariable(I);
+
// Emit final debug information.
if (TAI->doesSupportDebugInformation() || TAI->doesSupportExceptionHandling())
DW->EndModule();
}
if (TAI->getSetDirective()) {
- if (!M.alias_empty())
- SwitchToSection(TAI->getTextSection());
-
O << '\n';
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
I != E; ++I) {
delete Mang; Mang = 0;
DW = 0; MMI = 0;
+
+ OutStreamer.Finish();
return false;
}
-const std::string &
-AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF,
- std::string &Name) const {
+std::string
+AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) const {
assert(MF && "No machine function?");
- Name = MF->getFunction()->getName();
- if (Name.empty())
- Name = Mang->getMangledName(MF->getFunction());
-
- // FIXME: THIS SEEMS REALLY WRONG, it will get two prefixes.
- Name = Mang->makeNameProper(TAI->getEHGlobalPrefix() + Name + ".eh");
- return Name;
+ return Mang->getMangledName(MF->getFunction(), ".eh",
+ TAI->is_EHSymbolPrivate());
}
void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
namespace {
// SectionCPs - Keep track the alignment, constpool entries per Section.
struct SectionCPs {
- const Section *S;
+ const MCSection *S;
unsigned Alignment;
SmallVector<unsigned, 4> CPEs;
- SectionCPs(const Section *s, unsigned a) : S(s), Alignment(a) {};
+ SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {};
};
}
// 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) {
- MachineConstantPoolEntry CPE = CP[i];
+ const MachineConstantPoolEntry &CPE = CP[i];
unsigned Align = CPE.getAlignment();
- const Section* S = TAI->SelectSectionForMachineConst(CPE.getType());
+
+ SectionKind Kind;
+ switch (CPE.getRelocationInfo()) {
+ default: llvm_unreachable("Unknown section kind");
+ case 2: Kind = SectionKind::get(SectionKind::ReadOnlyWithRel); break;
+ case 1:
+ Kind = SectionKind::get(SectionKind::ReadOnlyWithRelLocal);
+ break;
+ case 0:
+ switch (TM.getTargetData()->getTypeAllocSize(CPE.getType())) {
+ case 4: Kind = SectionKind::get(SectionKind::MergeableConst4); break;
+ case 8: Kind = SectionKind::get(SectionKind::MergeableConst8); break;
+ case 16: Kind = SectionKind::get(SectionKind::MergeableConst16);break;
+ default: Kind = SectionKind::get(SectionKind::MergeableConst); break;
+ }
+ }
+
+ const MCSection *S = getObjFileLowering().getSectionForConstant(Kind);
+
// The number of sections are small, just do a linear search from the
// last section to the first.
bool Found = false;
// the appropriate section.
TargetLowering *LoweringInfo = TM.getTargetLowering();
- const char* JumpTableDataSection = TAI->getJumpTableDataSection();
const Function *F = MF.getFunction();
- unsigned SectionFlags = TAI->SectionFlagsForGlobal(F);
bool JTInDiffSection = false;
- if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
- !JumpTableDataSection ||
- SectionFlags & SectionFlags::Linkonce) {
+ 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.
- SwitchToSection(TAI->SectionForGlobal(F));
+ SwitchToSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
} else {
- SwitchToDataSection(JumpTableDataSection);
+ // Otherwise, drop it in the readonly section.
+ const MCSection *ReadOnlySection =
+ getObjFileLowering().getSectionForConstant(
+ SectionKind::get(SectionKind::ReadOnly));
+ SwitchToSection(ReadOnlySection);
JTInDiffSection = true;
}
return true;
}
- // Ignore debug and non-emitted data.
+ // Ignore debug and non-emitted data. This handles llvm.compiler.used.
if (GV->getSection() == "llvm.metadata" ||
GV->hasAvailableExternallyLinkage())
return true;
return false;
}
-/// findGlobalValue - if CV is an expression equivalent to a single
-/// global value, return that value.
-const GlobalValue * AsmPrinter::findGlobalValue(const Constant *CV) {
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
- return GV;
- else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
- const TargetData *TD = TM.getTargetData();
- unsigned Opcode = CE->getOpcode();
- switch (Opcode) {
- case Instruction::GetElementPtr: {
- const Constant *ptrVal = CE->getOperand(0);
- SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
- if (TD->getIndexedOffset(ptrVal->getType(), &idxVec[0], idxVec.size()))
- return 0;
- return findGlobalValue(ptrVal);
- }
- case Instruction::BitCast:
- return findGlobalValue(CE->getOperand(0));
- default:
- return 0;
- }
- }
- return 0;
-}
-
/// EmitLLVMUsedList - For targets that define a TAI::UsedDirective, mark each
/// 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 = TAI->getUsedDirective();
if (InitList == 0) return;
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
- const GlobalValue *GV = findGlobalValue(InitList->getOperand(i));
- if (TAI->emitUsedDirectiveFor(GV, Mang)) {
+ const GlobalValue *GV =
+ dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
+ if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang)) {
O << Directive;
EmitConstantValueOnly(InitList->getOperand(i));
O << '\n';
}
O << '\n';
}
-
+/// PadToColumn - This gets called every time a tab is emitted. If
+/// column padding is turned on, we replace the tab with the
+/// appropriate amount of padding. If not, we replace the tab with a
+/// space, except for the first operand so that initial operands are
+/// always lined up by tabs.
+void AsmPrinter::PadToColumn(unsigned Operand) const {
+ if (TAI->getOperandColumn(Operand) > 0) {
+ O.PadToColumn(TAI->getOperandColumn(Operand), 1);
+ }
+ else {
+ if (Operand == 1) {
+ // Emit the tab after the mnemonic.
+ O << '\t';
+ }
+ else {
+ // Replace the tab with a space.
+ O << ' ';
+ }
+ }
+}
+
/// EmitZeros - Emit a block of zeros.
///
void AsmPrinter::EmitZeros(uint64_t NumZeros, unsigned AddrSpace) const {
const TargetData *TD = TM.getTargetData();
unsigned Opcode = CE->getOpcode();
switch (Opcode) {
+ case Instruction::Trunc:
+ case Instruction::ZExt:
+ case Instruction::SExt:
+ case Instruction::FPTrunc:
+ case Instruction::FPExt:
+ case Instruction::UIToFP:
+ case Instruction::SIToFP:
+ case Instruction::FPToUI:
+ case Instruction::FPToSI:
+ llvm_unreachable("FIXME: Don't support this constant cast expr");
case Instruction::GetElementPtr: {
// generate a symbolic expression for the byte address
const Constant *ptrVal = CE->getOperand(0);
}
break;
}
- case Instruction::Trunc:
- case Instruction::ZExt:
- case Instruction::SExt:
- case Instruction::FPTrunc:
- case Instruction::FPExt:
- case Instruction::UIToFP:
- case Instruction::SIToFP:
- case Instruction::FPToUI:
- case Instruction::FPToSI:
- llvm_unreachable("FIXME: Don't yet support this kind of constant cast expr");
- break;
case Instruction::BitCast:
return EmitConstantValueOnly(CE->getOperand(0));
// 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()))
+ if (TD->getTypeAllocSize(Ty) == TD->getTypeAllocSize(Op->getType()))
return EmitConstantValueOnly(Op);
O << "((";
EmitConstantValueOnly(Op);
- APInt ptrMask = APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Ty));
+ APInt ptrMask =
+ APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Op->getType()));
SmallString<40> S;
ptrMask.toStringUnsigned(S);
O << ':';
if (printComment && MBB->getBasicBlock())
O << '\t' << TAI->getCommentString() << ' '
- << MBB->getBasicBlock()->getNameStart();
+ << MBB->getBasicBlock()->getNameStr();
}
/// printPICJumpTableSetLabel - This method prints a set label for the
/// EmitComments - Pretty-print comments for instructions
void AsmPrinter::EmitComments(const MachineInstr &MI) const
{
- // No comments in MachineInstr yet
+ if (VerboseAsm) {
+ if (!MI.getDebugLoc().isUnknown()) {
+ DebugLocTuple DLT = MF->getDebugLocTuple(MI.getDebugLoc());
+
+ // Print source line info
+ O.PadToColumn(TAI->getCommentColumn(), 1);
+ O << TAI->getCommentString() << " SrcLine ";
+ if (DLT.CompileUnit->hasInitializer()) {
+ Constant *Name = DLT.CompileUnit->getInitializer();
+ if (ConstantArray *NameString = dyn_cast<ConstantArray>(Name))
+ if (NameString->isString()) {
+ O << NameString->getAsString() << " ";
+ }
+ }
+ O << DLT.Line;
+ if (DLT.Col != 0)
+ O << ":" << DLT.Col;
+ }
+ }
}
/// EmitComments - Pretty-print comments for instructions
void AsmPrinter::EmitComments(const MCInst &MI) const
{
- // No comments in MCInst yet
+ if (VerboseAsm) {
+ if (!MI.getDebugLoc().isUnknown()) {
+ DebugLocTuple DLT = MF->getDebugLocTuple(MI.getDebugLoc());
+
+ // Print source line info
+ O.PadToColumn(TAI->getCommentColumn(), 1);
+ O << TAI->getCommentString() << " SrcLine ";
+ if (DLT.CompileUnit->hasInitializer()) {
+ Constant *Name = DLT.CompileUnit->getInitializer();
+ if (ConstantArray *NameString = dyn_cast<ConstantArray>(Name))
+ if (NameString->isString()) {
+ O << NameString->getAsString() << " ";
+ }
+ }
+ O << DLT.Line;
+ if (DLT.Col != 0)
+ O << ":" << DLT.Col;
+ }
+ }
}
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