6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-29 10:32:47 +00:00
Code Issues Projects Releases Wiki Activity

Seperate code out of TargetMachine into MachineInstrInfo

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4368 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-10-28 23:55:33 +00:00
parent 75276f150e
commit 93fa70598c
2 changed files with 59 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
lib/Target/TargetInstrInfo.cpp Normal file
View File

@ -0,0 +1,56 @@
//===-- TargetMachine.cpp - General Target Information ---------------------==//
//
// This file describes the general parts of a Target machine.
// This file also implements MachineInstrInfo and MachineCacheInfo.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/MachineInstrInfo.h"
#include "llvm/Constant.h"
#include "llvm/DerivedTypes.h"
//---------------------------------------------------------------------------
// class MachineInstructionInfo
// Interface to description of machine instructions
//---------------------------------------------------------------------------
MachineInstrInfo::MachineInstrInfo(const TargetMachine& tgt,
const MachineInstrDescriptor* Desc,
unsigned DescSize,
unsigned NumRealOpCodes)
: target(tgt), desc(Desc), descSize(DescSize), numRealOpCodes(NumRealOpCodes) {
// FIXME: TargetInstrDescriptors should not be global
assert(TargetInstrDescriptors == NULL && desc != NULL);
TargetInstrDescriptors = desc; // initialize global variable
}
MachineInstrInfo::~MachineInstrInfo() {
TargetInstrDescriptors = NULL; // reset global variable
}
bool MachineInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
int64_t intValue) const {
// First, check if opCode has an immed field.
bool isSignExtended;
uint64_t maxImmedValue = maxImmedConstant(opCode, isSignExtended);
if (maxImmedValue != 0)
{
// NEED TO HANDLE UNSIGNED VALUES SINCE THEY MAY BECOME MUCH
// SMALLER AFTER CASTING TO SIGN-EXTENDED int, short, or char.
// See CreateUIntSetInstruction in SparcInstrInfo.cpp.
// Now check if the constant fits
if (intValue <= (int64_t) maxImmedValue &&
intValue >= -((int64_t) maxImmedValue+1))
return true;
}
return false;
}
bool MachineInstrInfo::ConstantTypeMustBeLoaded(const Constant* CV) const {
assert(CV->getType()->isPrimitiveType() || isa<PointerType>(CV->getType()));
return !(CV->getType()->isIntegral() || isa<PointerType>(CV->getType()));
}

65
lib/Target/TargetMachine.cpp
View File

@ -1,14 +1,13 @@
//===-- TargetMachine.cpp - General Target Information ---------------------==//
//
// This file describes the general parts of a Target machine.
// This file also implements MachineInstrInfo and MachineCacheInfo.
// This file also implements MachineCacheInfo.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/MachineInstrInfo.h"
#include "llvm/Target/MachineCacheInfo.h"
#include "llvm/Function.h"
#include "llvm/Type.h"
//---------------------------------------------------------------------------
// class TargetMachine
@ -44,55 +43,6 @@ TargetMachine::findOptimalStorageSize(const Type* ty) const
}
//---------------------------------------------------------------------------
// class MachineInstructionInfo
// Interface to description of machine instructions
//---------------------------------------------------------------------------
/*ctor*/
MachineInstrInfo::MachineInstrInfo(const TargetMachine& tgt,
const MachineInstrDescriptor* _desc,
unsigned int _descSize,
unsigned int _numRealOpCodes)
: target(tgt),
desc(_desc), descSize(_descSize), numRealOpCodes(_numRealOpCodes)
{
// FIXME: TargetInstrDescriptors should not be global
assert(TargetInstrDescriptors == NULL && desc != NULL);
TargetInstrDescriptors = desc; // initialize global variable
}
MachineInstrInfo::~MachineInstrInfo()
{
TargetInstrDescriptors = NULL; // reset global variable
}
bool
MachineInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
int64_t intValue) const
{
// First, check if opCode has an immed field.
bool isSignExtended;
uint64_t maxImmedValue = maxImmedConstant(opCode, isSignExtended);
if (maxImmedValue != 0)
{
// NEED TO HANDLE UNSIGNED VALUES SINCE THEY MAY BECOME MUCH
// SMALLER AFTER CASTING TO SIGN-EXTENDED int, short, or char.
// See CreateUIntSetInstruction in SparcInstrInfo.cpp.
// Now check if the constant fits
if (intValue <= (int64_t) maxImmedValue &&
intValue >= -((int64_t) maxImmedValue+1))
return true;
}
return false;
}
//---------------------------------------------------------------------------
// class MachineCacheInfo
//
@ -100,16 +50,7 @@ MachineInstrInfo::constantFitsInImmedField(MachineOpCode opCode,
// Describes properties of the target cache architecture.
//---------------------------------------------------------------------------
/*ctor*/
MachineCacheInfo::MachineCacheInfo(const TargetMachine& tgt)
: target(tgt)
{
Initialize();
}
void
MachineCacheInfo::Initialize()
{
void MachineCacheInfo::Initialize() {
numLevels = 2;
cacheLineSizes.push_back(16); cacheLineSizes.push_back(32);
cacheSizes.push_back(1 << 15); cacheSizes.push_back(1 << 20);