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//===-- llvm/CodeGen/SparcInstrSelectionSupport.h ---------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// TODO: Need a description here.
//
//===----------------------------------------------------------------------===//
#ifndef SPARC_INSTR_SELECTION_SUPPORT_h
#define SPARC_INSTR_SELECTION_SUPPORT_h
#include "llvm/DerivedTypes.h"
#include "SparcInternals.h"
// Choose load instruction opcode based on type of value
inline MachineOpCode
ChooseLoadInstruction(const Type *DestTy)
{
switch (DestTy->getPrimitiveID()) {
case Type::BoolTyID:
case Type::UByteTyID: return V9::LDUBr;
case Type::SByteTyID: return V9::LDSBr;
case Type::UShortTyID: return V9::LDUHr;
case Type::ShortTyID: return V9::LDSHr;
case Type::UIntTyID: return V9::LDUWr;
case Type::IntTyID: return V9::LDSWr;
case Type::PointerTyID:
case Type::ULongTyID:
case Type::LongTyID: return V9::LDXr;
case Type::FloatTyID: return V9::LDFr;
case Type::DoubleTyID: return V9::LDDFr;
default: assert(0 && "Invalid type for Load instruction");
}
return 0;
}
// Choose store instruction opcode based on type of value
inline MachineOpCode
ChooseStoreInstruction(const Type *DestTy)
{
switch (DestTy->getPrimitiveID()) {
case Type::BoolTyID:
case Type::UByteTyID:
case Type::SByteTyID: return V9::STBr;
case Type::UShortTyID:
case Type::ShortTyID: return V9::STHr;
case Type::UIntTyID:
case Type::IntTyID: return V9::STWr;
case Type::PointerTyID:
case Type::ULongTyID:
case Type::LongTyID: return V9::STXr;
case Type::FloatTyID: return V9::STFr;
case Type::DoubleTyID: return V9::STDFr;
default: assert(0 && "Invalid type for Store instruction");
}
return 0;
}
inline MachineOpCode
ChooseAddInstructionByType(const Type* resultType)
{
MachineOpCode opCode = V9::INVALID_OPCODE;
if (resultType->isIntegral() ||
isa<PointerType>(resultType) ||
isa<FunctionType>(resultType) ||
resultType == Type::LabelTy)
{
opCode = V9::ADDr;
}
else
switch(resultType->getPrimitiveID())
{
case Type::FloatTyID: opCode = V9::FADDS; break;
case Type::DoubleTyID: opCode = V9::FADDD; break;
default: assert(0 && "Invalid type for ADD instruction"); break;
}
return opCode;
}
// Because the Sparc instruction selector likes to re-write operands to
// instructions, making them change from a Value* (virtual register) to a
// Constant* (making an immediate field), we need to change the opcode from a
// register-based instruction to an immediate-based instruction, hence this
// mapping.
static unsigned
convertOpcodeFromRegToImm(unsigned Opcode) {
switch (Opcode) {
/* arithmetic */
case V9::ADDr: return V9::ADDi;
case V9::ADDccr: return V9::ADDcci;
case V9::ADDCr: return V9::ADDCi;
case V9::ADDCccr: return V9::ADDCcci;
case V9::SUBr: return V9::SUBi;
case V9::SUBccr: return V9::SUBcci;
case V9::SUBCr: return V9::SUBCi;
case V9::SUBCccr: return V9::SUBCcci;
case V9::MULXr: return V9::MULXi;
case V9::SDIVXr: return V9::SDIVXi;
case V9::UDIVXr: return V9::UDIVXi;
/* logical */
case V9::ANDr: return V9::ANDi;
case V9::ANDccr: return V9::ANDcci;
case V9::ANDNr: return V9::ANDNi;
case V9::ANDNccr: return V9::ANDNcci;
case V9::ORr: return V9::ORi;
case V9::ORccr: return V9::ORcci;
case V9::ORNr: return V9::ORNi;
case V9::ORNccr: return V9::ORNcci;
case V9::XORr: return V9::XORi;
case V9::XORccr: return V9::XORcci;
case V9::XNORr: return V9::XNORi;
case V9::XNORccr: return V9::XNORcci;
/* shift */
case V9::SLLr5: return V9::SLLi5;
case V9::SRLr5: return V9::SRLi5;
case V9::SRAr5: return V9::SRAi5;
case V9::SLLXr6: return V9::SLLXi6;
case V9::SRLXr6: return V9::SRLXi6;
case V9::SRAXr6: return V9::SRAXi6;
/* Conditional move on int comparison with zero */
case V9::MOVRZr: return V9::MOVRZi;
case V9::MOVRLEZr: return V9::MOVRLEZi;
case V9::MOVRLZr: return V9::MOVRLZi;
case V9::MOVRNZr: return V9::MOVRNZi;
case V9::MOVRGZr: return V9::MOVRGZi;
case V9::MOVRGEZr: return V9::MOVRGEZi;
/* Conditional move on int condition code */
case V9::MOVAr: return V9::MOVAi;
case V9::MOVNr: return V9::MOVNi;
case V9::MOVNEr: return V9::MOVNEi;
case V9::MOVEr: return V9::MOVEi;
case V9::MOVGr: return V9::MOVGi;
case V9::MOVLEr: return V9::MOVLEi;
case V9::MOVGEr: return V9::MOVGEi;
case V9::MOVLr: return V9::MOVLi;
case V9::MOVGUr: return V9::MOVGUi;
case V9::MOVLEUr: return V9::MOVLEUi;
case V9::MOVCCr: return V9::MOVCCi;
case V9::MOVCSr: return V9::MOVCSi;
case V9::MOVPOSr: return V9::MOVPOSi;
case V9::MOVNEGr: return V9::MOVNEGi;
case V9::MOVVCr: return V9::MOVVCi;
case V9::MOVVSr: return V9::MOVVSi;
/* Conditional move of int reg on fp condition code */
case V9::MOVFAr: return V9::MOVFAi;
case V9::MOVFNr: return V9::MOVFNi;
case V9::MOVFUr: return V9::MOVFUi;
case V9::MOVFGr: return V9::MOVFGi;
case V9::MOVFUGr: return V9::MOVFUGi;
case V9::MOVFLr: return V9::MOVFLi;
case V9::MOVFULr: return V9::MOVFULi;
case V9::MOVFLGr: return V9::MOVFLGi;
case V9::MOVFNEr: return V9::MOVFNEi;
case V9::MOVFEr: return V9::MOVFEi;
case V9::MOVFUEr: return V9::MOVFUEi;
case V9::MOVFGEr: return V9::MOVFGEi;
case V9::MOVFUGEr: return V9::MOVFUGEi;
case V9::MOVFLEr: return V9::MOVFLEi;
case V9::MOVFULEr: return V9::MOVFULEi;
case V9::MOVFOr: return V9::MOVFOi;
/* load */
case V9::LDSBr: return V9::LDSBi;
case V9::LDSHr: return V9::LDSHi;
case V9::LDSWr: return V9::LDSWi;
case V9::LDUBr: return V9::LDUBi;
case V9::LDUHr: return V9::LDUHi;
case V9::LDUWr: return V9::LDUWi;
case V9::LDXr: return V9::LDXi;
case V9::LDFr: return V9::LDFi;
case V9::LDDFr: return V9::LDDFi;
case V9::LDQFr: return V9::LDQFi;
case V9::LDFSRr: return V9::LDFSRi;
case V9::LDXFSRr: return V9::LDXFSRi;
/* store */
case V9::STBr: return V9::STBi;
case V9::STHr: return V9::STHi;
case V9::STWr: return V9::STWi;
case V9::STXr: return V9::STXi;
case V9::STFr: return V9::STFi;
case V9::STDFr: return V9::STDFi;
case V9::STFSRr: return V9::STFSRi;
case V9::STXFSRr: return V9::STXFSRi;
/* jump & return */
case V9::JMPLCALLr: return V9::JMPLCALLi;
case V9::JMPLRETr: return V9::JMPLRETi;
case V9::RETURNr: return V9::RETURNi;
/* save and restore */
case V9::SAVEr: return V9::SAVEi;
case V9::RESTOREr: return V9::RESTOREi;
default:
// It's already in correct format
// Or, it's just not handled yet, but an assert() would break LLC
#if 0
std::cerr << "Unhandled opcode in convertOpcodeFromRegToImm(): " << Opcode
<< "\n";
#endif
return Opcode;
}
}
#endif
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