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Make intel asmprinter child of generic asmprinter, not x86 shared asm printer. This leads to some code duplication, which will be resolved later.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-06-28 11:07:54 +00:00
parent 271329af24
commit 1c4b5eaa46
4 changed files with 138 additions and 27 deletions
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17
lib/Target/X86/X86AsmPrinter.h
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@ -73,23 +73,6 @@ struct VISIBILITY_HIDDEN X86SharedAsmPrinter : public AsmPrinter {
// Necessary for dllexport support
StringSet<> DLLExportedFns, DLLExportedGVs;
inline static bool isScale(const MachineOperand &MO) {
return MO.isImmediate() &&
(MO.getImm() == 1 || MO.getImm() == 2 ||
MO.getImm() == 4 || MO.getImm() == 8);
}
inline static bool isMem(const MachineInstr *MI, unsigned Op) {
if (MI->getOperand(Op).isFrameIndex()) return true;
return Op+4 <= MI->getNumOperands() &&
MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
MI->getOperand(Op+2).isRegister() &&
(MI->getOperand(Op+3).isImmediate() ||
MI->getOperand(Op+3).isGlobalAddress() ||
MI->getOperand(Op+3).isConstantPoolIndex() ||
MI->getOperand(Op+3).isJumpTableIndex());
}
};
} // end namespace llvm

17
lib/Target/X86/X86InstrInfo.h
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@ -227,6 +227,23 @@ namespace X86II {
};
}
inline static bool isScale(const MachineOperand &MO) {
return MO.isImmediate() &&
(MO.getImm() == 1 || MO.getImm() == 2 ||
MO.getImm() == 4 || MO.getImm() == 8);
}
inline static bool isMem(const MachineInstr *MI, unsigned Op) {
if (MI->getOperand(Op).isFrameIndex()) return true;
return Op+4 <= MI->getNumOperands() &&
MI->getOperand(Op ).isRegister() && isScale(MI->getOperand(Op+1)) &&
MI->getOperand(Op+2).isRegister() &&
(MI->getOperand(Op+3).isImmediate() ||
MI->getOperand(Op+3).isGlobalAddress() ||
MI->getOperand(Op+3).isConstantPoolIndex() ||
MI->getOperand(Op+3).isJumpTableIndex());
}
class X86InstrInfo : public TargetInstrInfoImpl {
X86TargetMachine &TM;
const X86RegisterInfo RI;

97
lib/Target/X86/X86IntelAsmPrinter.cpp
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@ -15,20 +15,109 @@
#define DEBUG_TYPE "asm-printer"
#include "X86IntelAsmPrinter.h"
#include "X86InstrInfo.h"
#include "X86TargetAsmInfo.h"
#include "X86.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Assembly/Writer.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");
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 X86IntelAsmPrinter::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;
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");
}
}
std::string X86IntelAsmPrinter::getSectionForFunction(const Function &F) const {
// Intel asm always emits functions to _text.
return "_text";
@ -53,7 +142,7 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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);
@ -162,7 +251,7 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
X86SharedAsmPrinter::decorateName(Name, GV);
decorateName(Name, GV);
if (!isMemOp && !isCallOp) O << "OFFSET ";
if (GV->hasDLLImportLinkage()) {
@ -328,7 +417,7 @@ bool X86IntelAsmPrinter::doInitialization(Module &M) {
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->isDeclaration()) {
std::string Name = Mang->getValueName(I);
X86SharedAsmPrinter::decorateName(Name, I);
decorateName(Name, I);
O << "\textern " ;
if (I->hasDLLImportLinkage()) {

34
lib/Target/X86/X86IntelAsmPrinter.h
View File

@ -14,16 +14,19 @@
#ifndef X86INTELASMPRINTER_H
#define X86INTELASMPRINTER_H
#include "X86AsmPrinter.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "X86.h"
#include "X86MachineFunctionInfo.h"
#include "X86TargetMachine.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Support/Compiler.h"
namespace llvm {
struct VISIBILITY_HIDDEN X86IntelAsmPrinter : public X86SharedAsmPrinter {
struct VISIBILITY_HIDDEN X86IntelAsmPrinter : public AsmPrinter {
X86IntelAsmPrinter(std::ostream &O, X86TargetMachine &TM,
const TargetAsmInfo *T)
: X86SharedAsmPrinter(O, TM, T) {
: AsmPrinter(O, TM, T) {
}
virtual const char *getPassName() const {
@ -110,12 +113,31 @@ struct VISIBILITY_HIDDEN X86IntelAsmPrinter : public X86SharedAsmPrinter {
bool runOnMachineFunction(MachineFunction &F);
bool doInitialization(Module &M);
bool doFinalization(Module &M);
// 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);
/// getSectionForFunction - Return the section that we should emit the
/// specified function body into.
virtual std::string getSectionForFunction(const Function &F) const;
virtual void EmitString(const ConstantArray *CVA) const;
// Necessary for dllexport support
StringSet<> DLLExportedFns, DLLExportedGVs;
};
} // end namespace llvm