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//===- ValueTypes.cpp - Tablegen extended ValueType implementation --------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// The MVT type is used by tablegen as well as in LLVM. In order to handle
// extended types, the MVT type uses support functions that call into
// LLVM's type system code. These aren't accessible in tablegen, so this
// file provides simple replacements.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/ValueTypes.h"
#include <map>
#include <vector>
using namespace llvm;
namespace llvm {
class Type {
public:
virtual unsigned getSizeInBits() const = 0;
virtual ~Type() {}
};
}
class ExtendedIntegerType : public Type {
unsigned BitWidth;
public:
explicit ExtendedIntegerType(unsigned bits)
: BitWidth(bits) {}
unsigned getSizeInBits() const {
return getBitWidth();
}
unsigned getBitWidth() const {
return BitWidth;
}
};
class ExtendedVectorType : public Type {
MVT ElementType;
unsigned NumElements;
public:
ExtendedVectorType(MVT elty, unsigned num)
: ElementType(elty), NumElements(num) {}
unsigned getSizeInBits() const {
return getNumElements() * getElementType().getSizeInBits();
}
MVT getElementType() const {
return ElementType;
}
unsigned getNumElements() const {
return NumElements;
}
};
static std::map<unsigned, const Type *>
ExtendedIntegerTypeMap;
static std::map<std::pair<uintptr_t, uintptr_t>, const Type *>
ExtendedVectorTypeMap;
MVT MVT::getExtendedIntegerVT(unsigned BitWidth) {
const Type *&ET = ExtendedIntegerTypeMap[BitWidth];
if (!ET) ET = new ExtendedIntegerType(BitWidth);
MVT VT;
VT.LLVMTy = ET;
assert(VT.isExtended() && "Type is not extended!");
return VT;
}
MVT MVT::getExtendedVectorVT(MVT VT, unsigned NumElements) {
const Type *&ET = ExtendedVectorTypeMap[std::make_pair(VT.getRawBits(),
NumElements)];
if (!ET) ET = new ExtendedVectorType(VT, NumElements);
MVT ResultVT;
ResultVT.LLVMTy = ET;
assert(ResultVT.isExtended() && "Type is not extended!");
return ResultVT;
}
bool MVT::isExtendedFloatingPoint() const {
assert(isExtended() && "Type is not extended!");
// Extended floating-point types are not supported yet.
return false;
}
bool MVT::isExtendedInteger() const {
assert(isExtended() && "Type is not extended!");
return dynamic_cast<const ExtendedIntegerType *>(LLVMTy) != 0;
}
bool MVT::isExtendedVector() const {
assert(isExtended() && "Type is not extended!");
return dynamic_cast<const ExtendedVectorType *>(LLVMTy) != 0;
}
bool MVT::isExtended64BitVector() const {
assert(isExtended() && "Type is not extended!");
return isExtendedVector() && getSizeInBits() == 64;
}
bool MVT::isExtended128BitVector() const {
assert(isExtended() && "Type is not extended!");
return isExtendedVector() && getSizeInBits() == 128;
}
MVT MVT::getExtendedVectorElementType() const {
assert(isExtendedVector() && "Type is not an extended vector!");
return static_cast<const ExtendedVectorType *>(LLVMTy)->getElementType();
}
unsigned MVT::getExtendedVectorNumElements() const {
assert(isExtendedVector() && "Type is not an extended vector!");
return static_cast<const ExtendedVectorType *>(LLVMTy)->getNumElements();
}
unsigned MVT::getExtendedSizeInBits() const {
assert(isExtended() && "Type is not extended!");
return LLVMTy->getSizeInBits();
}
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