llvm-6502/lib/Target/TargetMachine.cpp

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//===-- TargetMachine.cpp - General Target Information ---------------------==//
//
// 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.
//
//===----------------------------------------------------------------------===//
//
// This file describes the general parts of a Target machine.
// This file also implements TargetCacheInfo.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetCacheInfo.h"
#include "llvm/Type.h"
#include "llvm/IntrinsicLowering.h"
using namespace llvm;
//---------------------------------------------------------------------------
// TargetMachine Class
//
TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
bool LittleEndian,
unsigned char PtrSize, unsigned char PtrAl,
unsigned char DoubleAl, unsigned char FloatAl,
unsigned char LongAl, unsigned char IntAl,
unsigned char ShortAl, unsigned char ByteAl)
: Name(name), DataLayout(name, LittleEndian,
PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
IntAl, ShortAl, ByteAl) {
IL = il ? il : new DefaultIntrinsicLowering();
}
TargetMachine::~TargetMachine() {
delete IL;
}
unsigned TargetMachine::findOptimalStorageSize(const Type *Ty) const {
// All integer types smaller than ints promote to 4 byte integers.
if (Ty->isIntegral() && Ty->getPrimitiveSize() < 4)
return 4;
return DataLayout.getTypeSize(Ty);
}
//---------------------------------------------------------------------------
// TargetCacheInfo Class
//
void TargetCacheInfo::Initialize() {
numLevels = 2;
cacheLineSizes.push_back(16); cacheLineSizes.push_back(32);
cacheSizes.push_back(1 << 15); cacheSizes.push_back(1 << 20);
cacheAssoc.push_back(1); cacheAssoc.push_back(4);
}