[llvm-commits] [llvm] r52860 - in /llvm/trunk/lib/Target/X86: X86ATTAsmPrinter.cpp X86ATTAsmPrinter.h X86AsmPrinter.cpp X86AsmPrinter.h
Anton Korobeynikov
asl at math.spbu.ru
Sat Jun 28 04:08:28 PDT 2008
Author: asl
Date: Sat Jun 28 06:08:27 2008
New Revision: 52860
URL: http://llvm.org/viewvc/llvm-project?rev=52860&view=rev
Log:
Remove X86SharedAsmPrinter
Modified:
llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.cpp
llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.h
llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
llvm/trunk/lib/Target/X86/X86AsmPrinter.h
Modified: llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.cpp?rev=52860&r1=52859&r2=52860&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.cpp Sat Jun 28 06:08:27 2008
@@ -20,14 +20,16 @@
#include "X86MachineFunctionInfo.h"
#include "X86TargetMachine.h"
#include "X86TargetAsmInfo.h"
-#include "llvm/ADT/StringExtras.h"
#include "llvm/CallingConv.h"
-#include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
+#include "llvm/Type.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/ADT/Statistic.h"
using namespace llvm;
STATISTIC(EmittedInsts, "Number of machine instrs printed");
@@ -46,6 +48,103 @@
return label;
}
+static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
+ const TargetData *TD) {
+ X86MachineFunctionInfo Info;
+ uint64_t Size = 0;
+
+ switch (F->getCallingConv()) {
+ case CallingConv::X86_StdCall:
+ Info.setDecorationStyle(StdCall);
+ break;
+ case CallingConv::X86_FastCall:
+ Info.setDecorationStyle(FastCall);
+ break;
+ default:
+ return Info;
+ }
+
+ unsigned argNum = 1;
+ for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
+ AI != AE; ++AI, ++argNum) {
+ const Type* Ty = AI->getType();
+
+ // 'Dereference' type in case of byval parameter attribute
+ if (F->paramHasAttr(argNum, ParamAttr::ByVal))
+ Ty = cast<PointerType>(Ty)->getElementType();
+
+ // Size should be aligned to DWORD boundary
+ Size += ((TD->getABITypeSize(Ty) + 3)/4)*4;
+ }
+
+ // We're not supporting tooooo huge arguments :)
+ Info.setBytesToPopOnReturn((unsigned int)Size);
+ return Info;
+}
+
+/// PrintUnmangledNameSafely - Print out the printable characters in the name.
+/// Don't print things like \n or \0.
+static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
+ for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
+ Name != E; ++Name)
+ if (isprint(*Name))
+ OS << *Name;
+}
+
+/// decorateName - Query FunctionInfoMap and use this information for various
+/// name decoration.
+void X86ATTAsmPrinter::decorateName(std::string &Name,
+ const GlobalValue *GV) {
+ const Function *F = dyn_cast<Function>(GV);
+ if (!F) return;
+
+ // We don't want to decorate non-stdcall or non-fastcall functions right now
+ unsigned CC = F->getCallingConv();
+ if (CC != CallingConv::X86_StdCall && CC != CallingConv::X86_FastCall)
+ return;
+
+ // Decorate names only when we're targeting Cygwin/Mingw32 targets
+ if (!Subtarget->isTargetCygMing())
+ return;
+
+ FMFInfoMap::const_iterator info_item = FunctionInfoMap.find(F);
+
+ const X86MachineFunctionInfo *Info;
+ if (info_item == FunctionInfoMap.end()) {
+ // Calculate apropriate function info and populate map
+ FunctionInfoMap[F] = calculateFunctionInfo(F, TM.getTargetData());
+ Info = &FunctionInfoMap[F];
+ } else {
+ Info = &info_item->second;
+ }
+
+ const FunctionType *FT = F->getFunctionType();
+ switch (Info->getDecorationStyle()) {
+ case None:
+ break;
+ case StdCall:
+ // "Pure" variadic functions do not receive @0 suffix.
+ if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
+ (FT->getNumParams() == 1 && F->hasStructRetAttr()))
+ Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
+ break;
+ case FastCall:
+ // "Pure" variadic functions do not receive @0 suffix.
+ if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
+ (FT->getNumParams() == 1 && F->hasStructRetAttr()))
+ Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
+
+ if (Name[0] == '_') {
+ Name[0] = '@';
+ } else {
+ Name = '@' + Name;
+ }
+ break;
+ default:
+ assert(0 && "Unsupported DecorationStyle");
+ }
+}
+
/// getSectionForFunction - Return the section that we should emit the
/// specified function body into.
std::string X86ATTAsmPrinter::getSectionForFunction(const Function &F) const {
@@ -94,7 +193,7 @@
if (CC == CallingConv::X86_StdCall || CC == CallingConv::X86_FastCall)
FunctionInfoMap[F] = *MF.getInfo<X86MachineFunctionInfo>();
- X86SharedAsmPrinter::decorateName(CurrentFnName, F);
+ decorateName(CurrentFnName, F);
SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
@@ -298,7 +397,7 @@
bool isThreadLocal = GVar && GVar->isThreadLocal();
std::string Name = Mang->getValueName(GV);
- X86SharedAsmPrinter::decorateName(Name, GV);
+ decorateName(Name, GV);
if (!isMemOp && !isCallOp)
O << '$';
@@ -649,5 +748,329 @@
printInstruction(MI);
}
+/// doInitialization
+bool X86ATTAsmPrinter::doInitialization(Module &M) {
+ if (TAI->doesSupportDebugInformation()) {
+ // Emit initial debug information.
+ DW.BeginModule(&M);
+ }
+
+ bool Result = AsmPrinter::doInitialization(M);
+
+ // Darwin wants symbols to be quoted if they have complex names.
+ if (Subtarget->isTargetDarwin())
+ Mang->setUseQuotes(true);
+
+ return Result;
+}
+
+
+bool X86ATTAsmPrinter::doFinalization(Module &M) {
+ // Note: this code is not shared by the Intel printer as it is too different
+ // from how MASM does things. When making changes here don't forget to look
+ // at X86IntelAsmPrinter::doFinalization().
+ const TargetData *TD = TM.getTargetData();
+
+ // Print out module-level global variables here.
+ for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
+ if (!I->hasInitializer())
+ continue; // External global require no code
+
+ // Check to see if this is a special global used by LLVM, if so, emit it.
+ if (EmitSpecialLLVMGlobal(I)) {
+ if (Subtarget->isTargetDarwin() &&
+ TM.getRelocationModel() == Reloc::Static) {
+ if (I->getName() == "llvm.global_ctors")
+ O << ".reference .constructors_used\n";
+ else if (I->getName() == "llvm.global_dtors")
+ O << ".reference .destructors_used\n";
+ }
+ continue;
+ }
+
+ std::string name = Mang->getValueName(I);
+ Constant *C = I->getInitializer();
+ const Type *Type = C->getType();
+ unsigned Size = TD->getABITypeSize(Type);
+ unsigned Align = TD->getPreferredAlignmentLog(I);
+
+ if (I->hasHiddenVisibility()) {
+ if (const char *Directive = TAI->getHiddenDirective())
+ O << Directive << name << "\n";
+ } else if (I->hasProtectedVisibility()) {
+ if (const char *Directive = TAI->getProtectedDirective())
+ O << Directive << name << "\n";
+ }
+
+ if (Subtarget->isTargetELF())
+ O << "\t.type\t" << name << ", at object\n";
+
+ if (C->isNullValue() && !I->hasSection()) {
+ if (I->hasExternalLinkage()) {
+ if (const char *Directive = TAI->getZeroFillDirective()) {
+ O << "\t.globl " << name << "\n";
+ O << Directive << "__DATA, __common, " << name << ", "
+ << Size << ", " << Align << "\n";
+ continue;
+ }
+ }
+
+ if (!I->isThreadLocal() &&
+ (I->hasInternalLinkage() || I->hasWeakLinkage() ||
+ I->hasLinkOnceLinkage() || I->hasCommonLinkage())) {
+ if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
+ if (!NoZerosInBSS && TAI->getBSSSection())
+ SwitchToDataSection(TAI->getBSSSection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
+ if (TAI->getLCOMMDirective() != NULL) {
+ if (I->hasInternalLinkage()) {
+ O << TAI->getLCOMMDirective() << name << "," << Size;
+ if (Subtarget->isTargetDarwin())
+ O << "," << Align;
+ } else if (Subtarget->isTargetDarwin() && !I->hasCommonLinkage()) {
+ O << "\t.globl " << name << "\n"
+ << TAI->getWeakDefDirective() << name << "\n";
+ SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
+ EmitAlignment(Align, I);
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
+ PrintUnmangledNameSafely(I, O);
+ O << "\n";
+ EmitGlobalConstant(C);
+ continue;
+ } else {
+ O << TAI->getCOMMDirective() << name << "," << Size;
+
+ // Leopard and above support aligned common symbols.
+ if (Subtarget->getDarwinVers() >= 9)
+ O << "," << Align;
+ }
+ } else {
+ if (!Subtarget->isTargetCygMing()) {
+ if (I->hasInternalLinkage())
+ O << "\t.local\t" << name << "\n";
+ }
+ O << TAI->getCOMMDirective() << name << "," << Size;
+ if (TAI->getCOMMDirectiveTakesAlignment())
+ O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
+ }
+ O << "\t\t" << TAI->getCommentString() << " ";
+ PrintUnmangledNameSafely(I, O);
+ O << "\n";
+ continue;
+ }
+ }
+
+ switch (I->getLinkage()) {
+ case GlobalValue::CommonLinkage:
+ case GlobalValue::LinkOnceLinkage:
+ case GlobalValue::WeakLinkage:
+ if (Subtarget->isTargetDarwin()) {
+ O << "\t.globl " << name << "\n"
+ << TAI->getWeakDefDirective() << name << "\n";
+ if (!I->isConstant())
+ SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
+ else {
+ const ArrayType *AT = dyn_cast<ArrayType>(Type);
+ if (AT && AT->getElementType()==Type::Int8Ty)
+ SwitchToDataSection("\t.section __TEXT,__const_coal,coalesced", I);
+ else
+ SwitchToDataSection("\t.section __DATA,__const_coal,coalesced", I);
+ }
+ } else if (Subtarget->isTargetCygMing()) {
+ std::string SectionName(".section\t.data$linkonce." +
+ name +
+ ",\"aw\"");
+ SwitchToDataSection(SectionName.c_str(), I);
+ O << "\t.globl\t" << name << "\n"
+ << "\t.linkonce same_size\n";
+ } else {
+ std::string SectionName("\t.section\t.llvm.linkonce.d." +
+ name +
+ ",\"aw\", at progbits");
+ SwitchToDataSection(SectionName.c_str(), I);
+ O << "\t.weak\t" << name << "\n";
+ }
+ break;
+ case GlobalValue::DLLExportLinkage:
+ DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
+ // FALL THROUGH
+ 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
+ O << "\t.globl " << name << "\n";
+ // FALL THROUGH
+ case GlobalValue::InternalLinkage: {
+ if (I->isConstant()) {
+ const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
+ if (TAI->getCStringSection() && CVA && CVA->isCString()) {
+ SwitchToDataSection(TAI->getCStringSection(), I);
+ break;
+ }
+ }
+ // FIXME: special handling for ".ctors" & ".dtors" sections
+ if (I->hasSection() &&
+ (I->getSection() == ".ctors" ||
+ I->getSection() == ".dtors")) {
+ std::string SectionName = ".section " + I->getSection();
+
+ if (Subtarget->isTargetCygMing()) {
+ SectionName += ",\"aw\"";
+ } else {
+ assert(!Subtarget->isTargetDarwin());
+ SectionName += ",\"aw\", at progbits";
+ }
+ SwitchToDataSection(SectionName.c_str());
+ } else if (I->hasSection() && Subtarget->isTargetDarwin()) {
+ // Honor all section names on Darwin; ObjC uses this
+ std::string SectionName = ".section " + I->getSection();
+ SwitchToDataSection(SectionName.c_str());
+ } else {
+ if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
+ SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSBSSSection() :
+ TAI->getBSSSection(), I);
+ else if (!I->isConstant())
+ SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSDataSection() :
+ TAI->getDataSection(), I);
+ else if (I->isThreadLocal())
+ SwitchToDataSection(TAI->getTLSDataSection());
+ else {
+ // Read-only data.
+ bool HasReloc = C->ContainsRelocations();
+ if (HasReloc &&
+ Subtarget->isTargetDarwin() &&
+ TM.getRelocationModel() != Reloc::Static)
+ SwitchToDataSection("\t.const_data\n");
+ else if (!HasReloc && Size == 4 &&
+ TAI->getFourByteConstantSection())
+ SwitchToDataSection(TAI->getFourByteConstantSection(), I);
+ else if (!HasReloc && Size == 8 &&
+ TAI->getEightByteConstantSection())
+ SwitchToDataSection(TAI->getEightByteConstantSection(), I);
+ else if (!HasReloc && Size == 16 &&
+ TAI->getSixteenByteConstantSection())
+ SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
+ else if (TAI->getReadOnlySection())
+ SwitchToDataSection(TAI->getReadOnlySection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
+ }
+ }
+
+ break;
+ }
+ default:
+ assert(0 && "Unknown linkage type!");
+ }
+
+ EmitAlignment(Align, I);
+ O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
+ PrintUnmangledNameSafely(I, O);
+ O << "\n";
+ if (TAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << name << ", " << Size << "\n";
+ // If the initializer is a extern weak symbol, remember to emit the weak
+ // reference!
+ if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
+ if (GV->hasExternalWeakLinkage())
+ ExtWeakSymbols.insert(GV);
+
+ EmitGlobalConstant(C);
+ }
+
+ // Output linker support code for dllexported globals
+ if (!DLLExportedGVs.empty()) {
+ SwitchToDataSection(".section .drectve");
+ }
+
+ for (StringSet<>::iterator i = DLLExportedGVs.begin(),
+ e = DLLExportedGVs.end();
+ i != e; ++i) {
+ O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
+ }
+
+ if (!DLLExportedFns.empty()) {
+ SwitchToDataSection(".section .drectve");
+ }
+
+ for (StringSet<>::iterator i = DLLExportedFns.begin(),
+ e = DLLExportedFns.end();
+ i != e; ++i) {
+ O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
+ }
+
+ if (Subtarget->isTargetDarwin()) {
+ SwitchToDataSection("");
+
+ // Output stubs for dynamically-linked functions
+ unsigned j = 1;
+ for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i, ++j) {
+ SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
+ "self_modifying_code+pure_instructions,5", 0);
+ std::string p = i->getKeyData();
+ printSuffixedName(p, "$stub");
+ O << ":\n";
+ O << "\t.indirect_symbol " << p << "\n";
+ O << "\thlt ; hlt ; hlt ; hlt ; hlt\n";
+ }
+
+ O << "\n";
+
+ if (TAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
+ // Add the (possibly multiple) personalities to the set of global values.
+ // Only referenced functions get into the Personalities list.
+ const std::vector<Function *>& Personalities = MMI->getPersonalities();
+
+ for (std::vector<Function *>::const_iterator I = Personalities.begin(),
+ E = Personalities.end(); I != E; ++I)
+ if (*I) GVStubs.insert("_" + (*I)->getName());
+ }
+
+ // Output stubs for external and common global variables.
+ if (!GVStubs.empty())
+ SwitchToDataSection(
+ "\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
+ for (StringSet<>::iterator i = GVStubs.begin(), e = GVStubs.end();
+ i != e; ++i) {
+ std::string p = i->getKeyData();
+ printSuffixedName(p, "$non_lazy_ptr");
+ O << ":\n";
+ O << "\t.indirect_symbol " << p << "\n";
+ O << "\t.long\t0\n";
+ }
+
+ // Emit final debug information.
+ DW.EndModule();
+
+ // Funny Darwin hack: This flag tells the linker that no global symbols
+ // contain code that falls through to other global symbols (e.g. the obvious
+ // implementation of multiple entry points). If this doesn't occur, the
+ // linker can safely perform dead code stripping. Since LLVM never
+ // generates code that does this, it is always safe to set.
+ O << "\t.subsections_via_symbols\n";
+ } else if (Subtarget->isTargetCygMing()) {
+ // Emit type information for external functions
+ for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
+ i != e; ++i) {
+ O << "\t.def\t " << i->getKeyData()
+ << ";\t.scl\t" << COFF::C_EXT
+ << ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
+ << ";\t.endef\n";
+ }
+
+ // Emit final debug information.
+ DW.EndModule();
+ } else if (Subtarget->isTargetELF()) {
+ // Emit final debug information.
+ DW.EndModule();
+ }
+
+ return AsmPrinter::doFinalization(M);
+}
+
// Include the auto-generated portion of the assembly writer.
#include "X86GenAsmWriter.inc"
Modified: llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.h?rev=52860&r1=52859&r2=52860&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.h (original)
+++ llvm/trunk/lib/Target/X86/X86ATTAsmPrinter.h Sat Jun 28 06:08:27 2008
@@ -14,21 +14,49 @@
#ifndef X86ATTASMPRINTER_H
#define X86ATTASMPRINTER_H
-#include "X86AsmPrinter.h"
+#include "X86.h"
+#include "X86MachineFunctionInfo.h"
+#include "X86TargetMachine.h"
+#include "llvm/ADT/StringSet.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/Support/Compiler.h"
namespace llvm {
struct MachineJumpTableInfo;
-
-struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public X86SharedAsmPrinter {
- X86ATTAsmPrinter(std::ostream &O, X86TargetMachine &TM, const TargetAsmInfo *T)
- : X86SharedAsmPrinter(O, TM, T) { }
+
+struct VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter {
+ DwarfWriter DW;
+ MachineModuleInfo *MMI;
+
+ const X86Subtarget *Subtarget;
+
+ X86ATTAsmPrinter(std::ostream &O, X86TargetMachine &TM,
+ const TargetAsmInfo *T)
+ : AsmPrinter(O, TM, T), DW(O, this, T), MMI(0) {
+ Subtarget = &TM.getSubtarget<X86Subtarget>();
+ }
virtual const char *getPassName() const {
return "X86 AT&T-Style Assembly Printer";
}
+ void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ if (Subtarget->isTargetDarwin() ||
+ Subtarget->isTargetELF() ||
+ Subtarget->isTargetCygMing()) {
+ AU.addRequired<MachineModuleInfo>();
+ }
+ AsmPrinter::getAnalysisUsage(AU);
+ }
+
+ bool doInitialization(Module &M);
+ bool doFinalization(Module &M);
+
/// printInstruction - This method is automatically generated by tablegen
/// from the instruction set description. This method returns true if the
/// machine instruction was sufficiently described to print it, otherwise it
@@ -68,13 +96,13 @@
void printlea64_32mem(const MachineInstr *MI, unsigned OpNo) {
printMemReference(MI, OpNo, "subreg64");
}
-
+
bool printAsmMRegister(const MachineOperand &MO, const char Mode);
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode);
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode);
-
+
void printMachineInstruction(const MachineInstr *MI);
void printSSECC(const MachineInstr *MI, unsigned Op);
void printMemReference(const MachineInstr *MI, unsigned Op,
@@ -88,13 +116,35 @@
void printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
const MachineBasicBlock *MBB,
unsigned uid) const;
-
+
void printPICLabel(const MachineInstr *MI, unsigned Op);
bool runOnMachineFunction(MachineFunction &F);
-
+
/// getSectionForFunction - Return the section that we should emit the
/// specified function body into.
virtual std::string getSectionForFunction(const Function &F) const;
+
+ // Necessary for Darwin to print out the apprioriate types of linker stubs
+ StringSet<> FnStubs, GVStubs, LinkOnceStubs;
+
+ // Necessary for dllexport support
+ StringSet<> DLLExportedFns, DLLExportedGVs;
+
+ // We have to propagate some information about MachineFunction to
+ // AsmPrinter. It's ok, when we're printing the function, since we have
+ // access to MachineFunction and can get the appropriate MachineFunctionInfo.
+ // Unfortunately, this is not possible when we're printing reference to
+ // Function (e.g. calling it and so on). Even more, there is no way to get the
+ // corresponding MachineFunctions: it can even be not created at all. That's
+ // why we should use additional structure, when we're collecting all necessary
+ // information.
+ //
+ // This structure is using e.g. for name decoration for stdcall & fastcall'ed
+ // function, since we have to use arguments' size for decoration.
+ typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
+ FMFInfoMap FunctionInfoMap;
+
+ void decorateName(std::string& Name, const GlobalValue* GV);
};
} // end namespace llvm
Modified: llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp?rev=52860&r1=52859&r2=52860&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp Sat Jun 28 06:08:27 2008
@@ -14,446 +14,11 @@
//
//===----------------------------------------------------------------------===//
-#include "X86AsmPrinter.h"
#include "X86ATTAsmPrinter.h"
-#include "X86COFF.h"
#include "X86IntelAsmPrinter.h"
-#include "X86MachineFunctionInfo.h"
#include "X86Subtarget.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/CallingConv.h"
-#include "llvm/Constants.h"
-#include "llvm/Module.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/ParameterAttributes.h"
-#include "llvm/Type.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetOptions.h"
using namespace llvm;
-static X86MachineFunctionInfo calculateFunctionInfo(const Function *F,
- const TargetData *TD) {
- X86MachineFunctionInfo Info;
- uint64_t Size = 0;
-
- switch (F->getCallingConv()) {
- case CallingConv::X86_StdCall:
- Info.setDecorationStyle(StdCall);
- break;
- case CallingConv::X86_FastCall:
- Info.setDecorationStyle(FastCall);
- break;
- default:
- return Info;
- }
-
- unsigned argNum = 1;
- for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
- AI != AE; ++AI, ++argNum) {
- const Type* Ty = AI->getType();
-
- // 'Dereference' type in case of byval parameter attribute
- if (F->paramHasAttr(argNum, ParamAttr::ByVal))
- Ty = cast<PointerType>(Ty)->getElementType();
-
- // Size should be aligned to DWORD boundary
- Size += ((TD->getABITypeSize(Ty) + 3)/4)*4;
- }
-
- // We're not supporting tooooo huge arguments :)
- Info.setBytesToPopOnReturn((unsigned int)Size);
- return Info;
-}
-
-
-/// decorateName - Query FunctionInfoMap and use this information for various
-/// name decoration.
-void X86SharedAsmPrinter::decorateName(std::string &Name,
- const GlobalValue *GV) {
- const Function *F = dyn_cast<Function>(GV);
- if (!F) return;
-
- // We don't want to decorate non-stdcall or non-fastcall functions right now
- unsigned CC = F->getCallingConv();
- if (CC != CallingConv::X86_StdCall && CC != CallingConv::X86_FastCall)
- return;
-
- // Decorate names only when we're targeting Cygwin/Mingw32 targets
- if (!Subtarget->isTargetCygMing())
- return;
-
- FMFInfoMap::const_iterator info_item = FunctionInfoMap.find(F);
-
- const X86MachineFunctionInfo *Info;
- if (info_item == FunctionInfoMap.end()) {
- // Calculate apropriate function info and populate map
- FunctionInfoMap[F] = calculateFunctionInfo(F, TM.getTargetData());
- Info = &FunctionInfoMap[F];
- } else {
- Info = &info_item->second;
- }
-
- const FunctionType *FT = F->getFunctionType();
- switch (Info->getDecorationStyle()) {
- case None:
- break;
- case StdCall:
- // "Pure" variadic functions do not receive @0 suffix.
- if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
- (FT->getNumParams() == 1 && F->hasStructRetAttr()))
- Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
- break;
- case FastCall:
- // "Pure" variadic functions do not receive @0 suffix.
- if (!FT->isVarArg() || (FT->getNumParams() == 0) ||
- (FT->getNumParams() == 1 && F->hasStructRetAttr()))
- Name += '@' + utostr_32(Info->getBytesToPopOnReturn());
-
- if (Name[0] == '_') {
- Name[0] = '@';
- } else {
- Name = '@' + Name;
- }
- break;
- default:
- assert(0 && "Unsupported DecorationStyle");
- }
-}
-
-/// doInitialization
-bool X86SharedAsmPrinter::doInitialization(Module &M) {
- if (TAI->doesSupportDebugInformation()) {
- // Emit initial debug information.
- DW.BeginModule(&M);
- }
-
- bool Result = AsmPrinter::doInitialization(M);
-
- // Darwin wants symbols to be quoted if they have complex names.
- if (Subtarget->isTargetDarwin())
- Mang->setUseQuotes(true);
-
- return Result;
-}
-
-/// PrintUnmangledNameSafely - Print out the printable characters in the name.
-/// Don't print things like \n or \0.
-static void PrintUnmangledNameSafely(const Value *V, std::ostream &OS) {
- for (const char *Name = V->getNameStart(), *E = Name+V->getNameLen();
- Name != E; ++Name)
- if (isprint(*Name))
- OS << *Name;
-}
-
-bool X86SharedAsmPrinter::doFinalization(Module &M) {
- // Note: this code is not shared by the Intel printer as it is too different
- // from how MASM does things. When making changes here don't forget to look
- // at X86IntelAsmPrinter::doFinalization().
- const TargetData *TD = TM.getTargetData();
-
- // Print out module-level global variables here.
- for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
- I != E; ++I) {
- if (!I->hasInitializer())
- continue; // External global require no code
-
- // Check to see if this is a special global used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(I)) {
- if (Subtarget->isTargetDarwin() &&
- TM.getRelocationModel() == Reloc::Static) {
- if (I->getName() == "llvm.global_ctors")
- O << ".reference .constructors_used\n";
- else if (I->getName() == "llvm.global_dtors")
- O << ".reference .destructors_used\n";
- }
- continue;
- }
-
- std::string name = Mang->getValueName(I);
- Constant *C = I->getInitializer();
- const Type *Type = C->getType();
- unsigned Size = TD->getABITypeSize(Type);
- unsigned Align = TD->getPreferredAlignmentLog(I);
-
- if (I->hasHiddenVisibility()) {
- if (const char *Directive = TAI->getHiddenDirective())
- O << Directive << name << "\n";
- } else if (I->hasProtectedVisibility()) {
- if (const char *Directive = TAI->getProtectedDirective())
- O << Directive << name << "\n";
- }
-
- if (Subtarget->isTargetELF())
- O << "\t.type\t" << name << ", at object\n";
-
- if (C->isNullValue() && !I->hasSection()) {
- if (I->hasExternalLinkage()) {
- if (const char *Directive = TAI->getZeroFillDirective()) {
- O << "\t.globl " << name << "\n";
- O << Directive << "__DATA, __common, " << name << ", "
- << Size << ", " << Align << "\n";
- continue;
- }
- }
-
- if (!I->isThreadLocal() &&
- (I->hasInternalLinkage() || I->hasWeakLinkage() ||
- I->hasLinkOnceLinkage() || I->hasCommonLinkage())) {
- if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- if (!NoZerosInBSS && TAI->getBSSSection())
- SwitchToDataSection(TAI->getBSSSection(), I);
- else
- SwitchToDataSection(TAI->getDataSection(), I);
- if (TAI->getLCOMMDirective() != NULL) {
- if (I->hasInternalLinkage()) {
- O << TAI->getLCOMMDirective() << name << "," << Size;
- if (Subtarget->isTargetDarwin())
- O << "," << Align;
- } else if (Subtarget->isTargetDarwin() && !I->hasCommonLinkage()) {
- O << "\t.globl " << name << "\n"
- << TAI->getWeakDefDirective() << name << "\n";
- SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
- PrintUnmangledNameSafely(I, O);
- O << "\n";
- EmitGlobalConstant(C);
- continue;
- } else {
- O << TAI->getCOMMDirective() << name << "," << Size;
-
- // Leopard and above support aligned common symbols.
- if (Subtarget->getDarwinVers() >= 9)
- O << "," << Align;
- }
- } else {
- if (!Subtarget->isTargetCygMing()) {
- if (I->hasInternalLinkage())
- O << "\t.local\t" << name << "\n";
- }
- O << TAI->getCOMMDirective() << name << "," << Size;
- if (TAI->getCOMMDirectiveTakesAlignment())
- O << "," << (TAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
- }
- O << "\t\t" << TAI->getCommentString() << " ";
- PrintUnmangledNameSafely(I, O);
- O << "\n";
- continue;
- }
- }
-
- switch (I->getLinkage()) {
- case GlobalValue::CommonLinkage:
- case GlobalValue::LinkOnceLinkage:
- case GlobalValue::WeakLinkage:
- if (Subtarget->isTargetDarwin()) {
- O << "\t.globl " << name << "\n"
- << TAI->getWeakDefDirective() << name << "\n";
- if (!I->isConstant())
- SwitchToDataSection("\t.section __DATA,__datacoal_nt,coalesced", I);
- else {
- const ArrayType *AT = dyn_cast<ArrayType>(Type);
- if (AT && AT->getElementType()==Type::Int8Ty)
- SwitchToDataSection("\t.section __TEXT,__const_coal,coalesced", I);
- else
- SwitchToDataSection("\t.section __DATA,__const_coal,coalesced", I);
- }
- } else if (Subtarget->isTargetCygMing()) {
- std::string SectionName(".section\t.data$linkonce." +
- name +
- ",\"aw\"");
- SwitchToDataSection(SectionName.c_str(), I);
- O << "\t.globl\t" << name << "\n"
- << "\t.linkonce same_size\n";
- } else {
- std::string SectionName("\t.section\t.llvm.linkonce.d." +
- name +
- ",\"aw\", at progbits");
- SwitchToDataSection(SectionName.c_str(), I);
- O << "\t.weak\t" << name << "\n";
- }
- break;
- case GlobalValue::DLLExportLinkage:
- DLLExportedGVs.insert(Mang->makeNameProper(I->getName(),""));
- // FALL THROUGH
- 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
- O << "\t.globl " << name << "\n";
- // FALL THROUGH
- case GlobalValue::InternalLinkage: {
- if (I->isConstant()) {
- const ConstantArray *CVA = dyn_cast<ConstantArray>(C);
- if (TAI->getCStringSection() && CVA && CVA->isCString()) {
- SwitchToDataSection(TAI->getCStringSection(), I);
- break;
- }
- }
- // FIXME: special handling for ".ctors" & ".dtors" sections
- if (I->hasSection() &&
- (I->getSection() == ".ctors" ||
- I->getSection() == ".dtors")) {
- std::string SectionName = ".section " + I->getSection();
-
- if (Subtarget->isTargetCygMing()) {
- SectionName += ",\"aw\"";
- } else {
- assert(!Subtarget->isTargetDarwin());
- SectionName += ",\"aw\", at progbits";
- }
- SwitchToDataSection(SectionName.c_str());
- } else if (I->hasSection() && Subtarget->isTargetDarwin()) {
- // Honor all section names on Darwin; ObjC uses this
- std::string SectionName = ".section " + I->getSection();
- SwitchToDataSection(SectionName.c_str());
- } else {
- if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
- SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSBSSSection() :
- TAI->getBSSSection(), I);
- else if (!I->isConstant())
- SwitchToDataSection(I->isThreadLocal() ? TAI->getTLSDataSection() :
- TAI->getDataSection(), I);
- else if (I->isThreadLocal())
- SwitchToDataSection(TAI->getTLSDataSection());
- else {
- // Read-only data.
- bool HasReloc = C->ContainsRelocations();
- if (HasReloc &&
- Subtarget->isTargetDarwin() &&
- TM.getRelocationModel() != Reloc::Static)
- SwitchToDataSection("\t.const_data\n");
- else if (!HasReloc && Size == 4 &&
- TAI->getFourByteConstantSection())
- SwitchToDataSection(TAI->getFourByteConstantSection(), I);
- else if (!HasReloc && Size == 8 &&
- TAI->getEightByteConstantSection())
- SwitchToDataSection(TAI->getEightByteConstantSection(), I);
- else if (!HasReloc && Size == 16 &&
- TAI->getSixteenByteConstantSection())
- SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
- else if (TAI->getReadOnlySection())
- SwitchToDataSection(TAI->getReadOnlySection(), I);
- else
- SwitchToDataSection(TAI->getDataSection(), I);
- }
- }
-
- break;
- }
- default:
- assert(0 && "Unknown linkage type!");
- }
-
- EmitAlignment(Align, I);
- O << name << ":\t\t\t\t" << TAI->getCommentString() << " ";
- PrintUnmangledNameSafely(I, O);
- O << "\n";
- if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size\t" << name << ", " << Size << "\n";
- // If the initializer is a extern weak symbol, remember to emit the weak
- // reference!
- if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
- if (GV->hasExternalWeakLinkage())
- ExtWeakSymbols.insert(GV);
-
- EmitGlobalConstant(C);
- }
-
- // Output linker support code for dllexported globals
- if (!DLLExportedGVs.empty()) {
- SwitchToDataSection(".section .drectve");
- }
-
- for (StringSet<>::iterator i = DLLExportedGVs.begin(),
- e = DLLExportedGVs.end();
- i != e; ++i) {
- O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
- }
-
- if (!DLLExportedFns.empty()) {
- SwitchToDataSection(".section .drectve");
- }
-
- for (StringSet<>::iterator i = DLLExportedFns.begin(),
- e = DLLExportedFns.end();
- i != e; ++i) {
- O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
- }
-
- if (Subtarget->isTargetDarwin()) {
- SwitchToDataSection("");
-
- // Output stubs for dynamically-linked functions
- unsigned j = 1;
- for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i, ++j) {
- SwitchToDataSection("\t.section __IMPORT,__jump_table,symbol_stubs,"
- "self_modifying_code+pure_instructions,5", 0);
- std::string p = i->getKeyData();
- printSuffixedName(p, "$stub");
- O << ":\n";
- O << "\t.indirect_symbol " << p << "\n";
- O << "\thlt ; hlt ; hlt ; hlt ; hlt\n";
- }
-
- O << "\n";
-
- if (TAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
- // Add the (possibly multiple) personalities to the set of global values.
- // Only referenced functions get into the Personalities list.
- const std::vector<Function *>& Personalities = MMI->getPersonalities();
-
- for (std::vector<Function *>::const_iterator I = Personalities.begin(),
- E = Personalities.end(); I != E; ++I)
- if (*I) GVStubs.insert("_" + (*I)->getName());
- }
-
- // Output stubs for external and common global variables.
- if (!GVStubs.empty())
- SwitchToDataSection(
- "\t.section __IMPORT,__pointers,non_lazy_symbol_pointers");
- for (StringSet<>::iterator i = GVStubs.begin(), e = GVStubs.end();
- i != e; ++i) {
- std::string p = i->getKeyData();
- printSuffixedName(p, "$non_lazy_ptr");
- O << ":\n";
- O << "\t.indirect_symbol " << p << "\n";
- O << "\t.long\t0\n";
- }
-
- // Emit final debug information.
- DW.EndModule();
-
- // Funny Darwin hack: This flag tells the linker that no global symbols
- // contain code that falls through to other global symbols (e.g. the obvious
- // implementation of multiple entry points). If this doesn't occur, the
- // linker can safely perform dead code stripping. Since LLVM never
- // generates code that does this, it is always safe to set.
- O << "\t.subsections_via_symbols\n";
- } else if (Subtarget->isTargetCygMing()) {
- // Emit type information for external functions
- for (StringSet<>::iterator i = FnStubs.begin(), e = FnStubs.end();
- i != e; ++i) {
- O << "\t.def\t " << i->getKeyData()
- << ";\t.scl\t" << COFF::C_EXT
- << ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
- << ";\t.endef\n";
- }
-
- // Emit final debug information.
- DW.EndModule();
- } else if (Subtarget->isTargetELF()) {
- // Emit final debug information.
- DW.EndModule();
- }
-
- return AsmPrinter::doFinalization(M);
-}
-
/// createX86CodePrinterPass - Returns a pass that prints the X86 assembly code
/// for a MachineFunction to the given output stream, using the given target
/// machine description.
Modified: llvm/trunk/lib/Target/X86/X86AsmPrinter.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86AsmPrinter.h?rev=52860&r1=52859&r2=52860&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86AsmPrinter.h (original)
+++ llvm/trunk/lib/Target/X86/X86AsmPrinter.h Sat Jun 28 06:08:27 2008
@@ -1,80 +0,0 @@
-//===-- X86AsmPrinter.h - Convert X86 LLVM code to Intel assembly ---------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file the shared super class printer that converts from our internal
-// representation of machine-dependent LLVM code to Intel and AT&T format
-// assembly language. This printer is the output mechanism used by `llc'.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef X86ASMPRINTER_H
-#define X86ASMPRINTER_H
-
-#include "X86.h"
-#include "X86MachineFunctionInfo.h"
-#include "X86TargetMachine.h"
-#include "llvm/ADT/StringSet.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/DwarfWriter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/Support/Compiler.h"
-
-namespace llvm {
-
-struct VISIBILITY_HIDDEN X86SharedAsmPrinter : public AsmPrinter {
- DwarfWriter DW;
- MachineModuleInfo *MMI;
-
- X86SharedAsmPrinter(std::ostream &O, X86TargetMachine &TM,
- const TargetAsmInfo *T)
- : AsmPrinter(O, TM, T), DW(O, this, T), MMI(0) {
- Subtarget = &TM.getSubtarget<X86Subtarget>();
- }
-
- // We have to propagate some information about MachineFunction to
- // AsmPrinter. It's ok, when we're printing the function, since we have
- // access to MachineFunction and can get the appropriate MachineFunctionInfo.
- // Unfortunately, this is not possible when we're printing reference to
- // Function (e.g. calling it and so on). Even more, there is no way to get the
- // corresponding MachineFunctions: it can even be not created at all. That's
- // why we should use additional structure, when we're collecting all necessary
- // information.
- //
- // This structure is using e.g. for name decoration for stdcall & fastcall'ed
- // function, since we have to use arguments' size for decoration.
- typedef std::map<const Function*, X86MachineFunctionInfo> FMFInfoMap;
- FMFInfoMap FunctionInfoMap;
-
- void decorateName(std::string& Name, const GlobalValue* GV);
-
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
-
- void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- if (Subtarget->isTargetDarwin() ||
- Subtarget->isTargetELF() ||
- Subtarget->isTargetCygMing()) {
- AU.addRequired<MachineModuleInfo>();
- }
- AsmPrinter::getAnalysisUsage(AU);
- }
-
- const X86Subtarget *Subtarget;
-
- // Necessary for Darwin to print out the apprioriate types of linker stubs
- StringSet<> FnStubs, GVStubs, LinkOnceStubs;
-
- // Necessary for dllexport support
- StringSet<> DLLExportedFns, DLLExportedGVs;
-};
-
-} // end namespace llvm
-
-#endif
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