#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/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()),
- IsInTextSection(false), LastMI(0), LastFn(0), Counter(~0U),
+
+ OutContext(*new MCContext()),
+ OutStreamer(*createAsmStreamer(OutContext, O)),
+
+ LastMI(0), LastFn(0), Counter(~0U),
PrevDLT(0, ~0U, ~0U) {
+ CurrentSection = 0;
DW = 0; MMI = 0;
switch (AsmVerbose) {
case cl::BOU_UNSET: VerboseAsm = VDef; break;
for (gcp_iterator I = GCMetadataPrinters.begin(),
E = GCMetadataPrinters.end(); I != E; ++I)
delete I->second;
-}
-
-/// SwitchToTextSection - Switch to the specified text section of the executable
-/// if we are not already in it!
-///
-void AsmPrinter::SwitchToTextSection(const char *NewSection,
- const GlobalValue *GV) {
- std::string NS;
- if (GV && GV->hasSection())
- NS = TAI->getSwitchToSectionDirective() + GV->getSection();
- else
- NS = NewSection;
- // If we're already in this section, we're done.
- if (CurrentSection == NS) return;
-
- // Close the current section, if applicable.
- if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
- O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << '\n';
-
- CurrentSection = NS;
-
- if (!CurrentSection.empty())
- O << CurrentSection << TAI->getTextSectionStartSuffix() << '\n';
+ delete &OutStreamer;
+ delete &OutContext;
+}
- IsInTextSection = true;
+TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
+ return TM.getTargetLowering()->getObjFileLowering();
}
-/// SwitchToDataSection - Switch to the specified data 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! If "NS" is null, then this causes us to exit the
+/// current section and not reenter another one. This is generally used for
+/// asmprinter hacks.
///
-void AsmPrinter::SwitchToDataSection(const char *NewSection,
- const GlobalValue *GV) {
- std::string NS;
- if (GV && GV->hasSection())
- NS = TAI->getSwitchToSectionDirective() + GV->getSection();
- else
- NS = NewSection;
-
+/// FIXME: Remove support for null sections.
+///
+void AsmPrinter::SwitchToSection(const MCSection *NS) {
// If we're already in this section, we're done.
if (CurrentSection == NS) return;
- // Close the current section, if applicable.
- if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
- O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << '\n';
-
CurrentSection = NS;
-
- if (!CurrentSection.empty())
- O << CurrentSection << TAI->getDataSectionStartSuffix() << '\n';
-
- IsInTextSection = false;
-}
-
-/// 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();
- // If we're already in this section, we're done.
- if (CurrentSection == NewSection) return;
-
- // Close the current section, if applicable.
- if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
- O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << '\n';
-
- // FIXME: Make CurrentSection a Section* in the future
- CurrentSection = NewSection;
- CurrentSection_ = NS;
-
- if (!CurrentSection.empty()) {
- // 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->hasFlag(SectionFlags::Named))
- O << TAI->getSwitchToSectionDirective()
- << CurrentSection
- << TAI->getSectionFlags(NS->getFlags());
- else
- O << CurrentSection;
- O << TAI->getDataSectionStartSuffix() << '\n';
+ if (NS == 0) 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->isDirective()) {
+ SmallString<32> FlagsStr;
+ getObjFileLowering().getSectionFlagsAsString(NS->getKind(), FlagsStr);
+
+ O << TAI->getSwitchToSectionDirective()
+ << CurrentSection->getName() << FlagsStr.c_str() << '\n';
+ } else {
+ O << CurrentSection->getName() << '\n';
}
-
- IsInTextSection = (NS->getFlags() & SectionFlags::Code);
}
void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
MachineFunctionPass::getAnalysisUsage(AU);
AU.addRequired<GCModuleInfo>();
}
bool AsmPrinter::doInitialization(Module &M) {
+ // Initialize TargetLoweringObjectFile.
+ const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
+ .Initialize(OutContext, TM);
+
Mang = new Mangler(M, TAI->getGlobalPrefix(), TAI->getPrivateGlobalPrefix(),
TAI->getLinkerPrivateGlobalPrefix());
<< '\n' << TAI->getCommentString()
<< " End of file scope inline assembly\n";
- SwitchToDataSection(""); // Reset back to no section.
+ SwitchToSection(0); // Reset back to no section to close off sections.
if (TAI->doesSupportDebugInformation() ||
TAI->doesSupportExceptionHandling()) {
// to stuff that is actually used. Note that doing so would require targets
// to notice uses in operands (due to constant exprs etc). This should
// happen with the MC stuff eventually.
- SwitchToDataSection("");
+ SwitchToSection(0);
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
O << TAI->getWeakRefDirective() << Mang->getMangledName(I) << '\n';
}
- for (Module::const_iterator I = M.begin(), E = M.end();
- I != E; ++I) {
+ for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
if (I->hasExternalWeakLinkage())
O << TAI->getWeakRefDirective() << Mang->getMangledName(I) << '\n';
}
}
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;
}
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) {};
};
}
const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
if (CP.empty()) return;
- const TargetData &TD = *TM.getTargetData();
-
// 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) {
const MachineConstantPoolEntry &CPE = CP[i];
unsigned Align = CPE.getAlignment();
- uint64_t Size = TD.getTypeAllocSize(CPE.getType());
- const Section *S =
- TAI->getSectionForMergableConstant(Size, CPE.getRelocationInfo());
+
+ 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);
// The number of sections are small, just do a linear search from the
// last section to the first.
// the appropriate section.
TargetLowering *LoweringInfo = TM.getTargetLowering();
- const char* JumpTableDataSection = TAI->getJumpTableDataSection();
const Function *F = MF.getFunction();
- const Section *FuncSection = TAI->SectionForGlobal(F);
-
bool JTInDiffSection = false;
- if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
- !JumpTableDataSection ||
- FuncSection->hasFlag(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(FuncSection);
+ SwitchToSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
} else {
- SwitchToDataSection(JumpTableDataSection);
+ // Otherwise, drop it in the readonly section.
+ const MCSection *ReadOnlySection =
+ getObjFileLowering().getSectionForConstant(SectionKind::getReadOnly());
+ SwitchToSection(ReadOnlySection);
JTInDiffSection = true;
}
/// 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->isName("llvm.used")) {
+ if (GV->getName() == "llvm.used") {
if (TAI->getUsedDirective() != 0) // No need to emit this at all.
EmitLLVMUsedList(GV->getInitializer());
return true;
const TargetData *TD = TM.getTargetData();
unsigned Align = Log2_32(TD->getPointerPrefAlignment());
if (GV->getName() == "llvm.global_ctors") {
- SwitchToDataSection(TAI->getStaticCtorsSection());
+ SwitchToSection(getObjFileLowering().getStaticCtorSection());
EmitAlignment(Align, 0);
EmitXXStructorList(GV->getInitializer());
return true;
}
if (GV->getName() == "llvm.global_dtors") {
- SwitchToDataSection(TAI->getStaticDtorsSection());
+ SwitchToSection(getObjFileLowering().getStaticDtorSection());
EmitAlignment(Align, 0);
EmitXXStructorList(GV->getInitializer());
return true;
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
const GlobalValue *GV =
dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
- if (GV && TAI->emitUsedDirectiveFor(GV, Mang)) {
+ if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang)) {
O << Directive;
EmitConstantValueOnly(InitList->getOperand(i));
O << '\n';
if (TAI->getAlignmentIsInBytes()) NumBits = 1 << NumBits;
O << TAI->getAlignDirective() << NumBits;
- unsigned FillValue = TAI->getTextAlignFillValue();
- UseFillExpr &= IsInTextSection && FillValue;
- if (UseFillExpr) {
- O << ',';
- PrintHex(FillValue);
- }
+ if (CurrentSection && CurrentSection->getKind().isText())
+ if (unsigned FillValue = TAI->getTextAlignFillValue()) {
+ O << ',';
+ PrintHex(FillValue);
+ }
O << '\n';
}
+/// getOperandColumn - Return the output column number (zero-based)
+/// for operand % "operand." If TargetAsmInfo has FirstOperandColumn
+/// == 0 or MaxOperandLength == 0, return 0, meaning column alignment
+/// is disabled.
+unsigned AsmPrinter::getOperandColumn(int operand) const {
+ if (TAI->getFirstOperandColumn() > 0 && TAI->getMaxOperandLength() > 0)
+ return TAI->getFirstOperandColumn() +
+ (TAI->getMaxOperandLength()+1)*(operand-1);
+ return 0;
+}
+/// 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 (getOperandColumn(Operand) > 0) {
+ O.PadToColumn(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);
/// processDebugLoc - Processes the debug information of each machine
/// instruction's DebugLoc.
void AsmPrinter::processDebugLoc(DebugLoc DL) {
+ if (!TAI || !DW)
+ return;
+
if (TAI->doesSupportDebugInformation() && DW->ShouldEmitDwarfDebug()) {
if (!DL.isUnknown()) {
DebugLocTuple CurDLT = MF->getDebugLocTuple(DL);
O << ':';
if (printComment && MBB->getBasicBlock())
O << '\t' << TAI->getCommentString() << ' '
- << MBB->getBasicBlock()->getNameStart();
+ << MBB->getBasicBlock()->getNameStr();
}
/// printPICJumpTableSetLabel - This method prints a set label for the
projects / oota-llvm.git / blobdiff