mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-29 13:29:28 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205831 91177308-0d34-0410-b5e6-96231b3b80d8
368 lines
13 KiB
C++
368 lines
13 KiB
C++
//===- CodeGen/ValueTypes.h - Low-Level Target independ. types --*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the set of low-level target independent types which various
|
|
// values in the code generator are. This allows the target specific behavior
|
|
// of instructions to be described to target independent passes.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_VALUETYPES_H
|
|
#define LLVM_CODEGEN_VALUETYPES_H
|
|
|
|
#include "llvm/CodeGen/MachineValueType.h"
|
|
#include <cassert>
|
|
#include <string>
|
|
|
|
namespace llvm {
|
|
|
|
class LLVMContext;
|
|
class Type;
|
|
|
|
/// EVT - Extended Value Type. Capable of holding value types which are not
|
|
/// native for any processor (such as the i12345 type), as well as the types
|
|
/// a MVT can represent.
|
|
struct EVT {
|
|
private:
|
|
MVT V;
|
|
Type *LLVMTy;
|
|
|
|
public:
|
|
EVT() : V((MVT::SimpleValueType)(MVT::INVALID_SIMPLE_VALUE_TYPE)),
|
|
LLVMTy(nullptr) {}
|
|
EVT(MVT::SimpleValueType SVT) : V(SVT), LLVMTy(nullptr) { }
|
|
EVT(MVT S) : V(S), LLVMTy(nullptr) {}
|
|
|
|
bool operator==(EVT VT) const {
|
|
return !(*this != VT);
|
|
}
|
|
bool operator!=(EVT VT) const {
|
|
if (V.SimpleTy != VT.V.SimpleTy)
|
|
return true;
|
|
if (V.SimpleTy < 0)
|
|
return LLVMTy != VT.LLVMTy;
|
|
return false;
|
|
}
|
|
|
|
/// getFloatingPointVT - Returns the EVT that represents a floating point
|
|
/// type with the given number of bits. There are two floating point types
|
|
/// with 128 bits - this returns f128 rather than ppcf128.
|
|
static EVT getFloatingPointVT(unsigned BitWidth) {
|
|
return MVT::getFloatingPointVT(BitWidth);
|
|
}
|
|
|
|
/// getIntegerVT - Returns the EVT that represents an integer with the given
|
|
/// number of bits.
|
|
static EVT getIntegerVT(LLVMContext &Context, unsigned BitWidth) {
|
|
MVT M = MVT::getIntegerVT(BitWidth);
|
|
if (M.SimpleTy >= 0)
|
|
return M;
|
|
return getExtendedIntegerVT(Context, BitWidth);
|
|
}
|
|
|
|
/// getVectorVT - Returns the EVT that represents a vector NumElements in
|
|
/// length, where each element is of type VT.
|
|
static EVT getVectorVT(LLVMContext &Context, EVT VT, unsigned NumElements) {
|
|
MVT M = MVT::getVectorVT(VT.V, NumElements);
|
|
if (M.SimpleTy >= 0)
|
|
return M;
|
|
return getExtendedVectorVT(Context, VT, NumElements);
|
|
}
|
|
|
|
/// changeVectorElementTypeToInteger - Return a vector with the same number
|
|
/// of elements as this vector, but with the element type converted to an
|
|
/// integer type with the same bitwidth.
|
|
EVT changeVectorElementTypeToInteger() const {
|
|
if (!isSimple())
|
|
return changeExtendedVectorElementTypeToInteger();
|
|
MVT EltTy = getSimpleVT().getVectorElementType();
|
|
unsigned BitWidth = EltTy.getSizeInBits();
|
|
MVT IntTy = MVT::getIntegerVT(BitWidth);
|
|
MVT VecTy = MVT::getVectorVT(IntTy, getVectorNumElements());
|
|
assert(VecTy.SimpleTy >= 0 &&
|
|
"Simple vector VT not representable by simple integer vector VT!");
|
|
return VecTy;
|
|
}
|
|
|
|
/// isSimple - Test if the given EVT is simple (as opposed to being
|
|
/// extended).
|
|
bool isSimple() const {
|
|
return V.SimpleTy >= 0;
|
|
}
|
|
|
|
/// isExtended - Test if the given EVT is extended (as opposed to
|
|
/// being simple).
|
|
bool isExtended() const {
|
|
return !isSimple();
|
|
}
|
|
|
|
/// isFloatingPoint - Return true if this is a FP, or a vector FP type.
|
|
bool isFloatingPoint() const {
|
|
return isSimple() ? V.isFloatingPoint() : isExtendedFloatingPoint();
|
|
}
|
|
|
|
/// isInteger - Return true if this is an integer, or a vector integer type.
|
|
bool isInteger() const {
|
|
return isSimple() ? V.isInteger() : isExtendedInteger();
|
|
}
|
|
|
|
/// isVector - Return true if this is a vector value type.
|
|
bool isVector() const {
|
|
return isSimple() ? V.isVector() : isExtendedVector();
|
|
}
|
|
|
|
/// is16BitVector - Return true if this is a 16-bit vector type.
|
|
bool is16BitVector() const {
|
|
return isSimple() ? V.is16BitVector() : isExtended16BitVector();
|
|
}
|
|
|
|
/// is32BitVector - Return true if this is a 32-bit vector type.
|
|
bool is32BitVector() const {
|
|
return isSimple() ? V.is32BitVector() : isExtended32BitVector();
|
|
}
|
|
|
|
/// is64BitVector - Return true if this is a 64-bit vector type.
|
|
bool is64BitVector() const {
|
|
return isSimple() ? V.is64BitVector() : isExtended64BitVector();
|
|
}
|
|
|
|
/// is128BitVector - Return true if this is a 128-bit vector type.
|
|
bool is128BitVector() const {
|
|
return isSimple() ? V.is128BitVector() : isExtended128BitVector();
|
|
}
|
|
|
|
/// is256BitVector - Return true if this is a 256-bit vector type.
|
|
bool is256BitVector() const {
|
|
return isSimple() ? V.is256BitVector() : isExtended256BitVector();
|
|
}
|
|
|
|
/// is512BitVector - Return true if this is a 512-bit vector type.
|
|
bool is512BitVector() const {
|
|
return isSimple() ? V.is512BitVector() : isExtended512BitVector();
|
|
}
|
|
|
|
/// is1024BitVector - Return true if this is a 1024-bit vector type.
|
|
bool is1024BitVector() const {
|
|
return isSimple() ? V.is1024BitVector() : isExtended1024BitVector();
|
|
}
|
|
|
|
/// isOverloaded - Return true if this is an overloaded type for TableGen.
|
|
bool isOverloaded() const {
|
|
return (V==MVT::iAny || V==MVT::fAny || V==MVT::vAny || V==MVT::iPTRAny);
|
|
}
|
|
|
|
/// isByteSized - Return true if the bit size is a multiple of 8.
|
|
bool isByteSized() const {
|
|
return (getSizeInBits() & 7) == 0;
|
|
}
|
|
|
|
/// isRound - Return true if the size is a power-of-two number of bytes.
|
|
bool isRound() const {
|
|
unsigned BitSize = getSizeInBits();
|
|
return BitSize >= 8 && !(BitSize & (BitSize - 1));
|
|
}
|
|
|
|
/// bitsEq - Return true if this has the same number of bits as VT.
|
|
bool bitsEq(EVT VT) const {
|
|
if (EVT::operator==(VT)) return true;
|
|
return getSizeInBits() == VT.getSizeInBits();
|
|
}
|
|
|
|
/// bitsGT - Return true if this has more bits than VT.
|
|
bool bitsGT(EVT VT) const {
|
|
if (EVT::operator==(VT)) return false;
|
|
return getSizeInBits() > VT.getSizeInBits();
|
|
}
|
|
|
|
/// bitsGE - Return true if this has no less bits than VT.
|
|
bool bitsGE(EVT VT) const {
|
|
if (EVT::operator==(VT)) return true;
|
|
return getSizeInBits() >= VT.getSizeInBits();
|
|
}
|
|
|
|
/// bitsLT - Return true if this has less bits than VT.
|
|
bool bitsLT(EVT VT) const {
|
|
if (EVT::operator==(VT)) return false;
|
|
return getSizeInBits() < VT.getSizeInBits();
|
|
}
|
|
|
|
/// bitsLE - Return true if this has no more bits than VT.
|
|
bool bitsLE(EVT VT) const {
|
|
if (EVT::operator==(VT)) return true;
|
|
return getSizeInBits() <= VT.getSizeInBits();
|
|
}
|
|
|
|
|
|
/// getSimpleVT - Return the SimpleValueType held in the specified
|
|
/// simple EVT.
|
|
MVT getSimpleVT() const {
|
|
assert(isSimple() && "Expected a SimpleValueType!");
|
|
return V;
|
|
}
|
|
|
|
/// getScalarType - If this is a vector type, return the element type,
|
|
/// otherwise return this.
|
|
EVT getScalarType() const {
|
|
return isVector() ? getVectorElementType() : *this;
|
|
}
|
|
|
|
/// getVectorElementType - Given a vector type, return the type of
|
|
/// each element.
|
|
EVT getVectorElementType() const {
|
|
assert(isVector() && "Invalid vector type!");
|
|
if (isSimple())
|
|
return V.getVectorElementType();
|
|
return getExtendedVectorElementType();
|
|
}
|
|
|
|
/// getVectorNumElements - Given a vector type, return the number of
|
|
/// elements it contains.
|
|
unsigned getVectorNumElements() const {
|
|
assert(isVector() && "Invalid vector type!");
|
|
if (isSimple())
|
|
return V.getVectorNumElements();
|
|
return getExtendedVectorNumElements();
|
|
}
|
|
|
|
/// getSizeInBits - Return the size of the specified value type in bits.
|
|
unsigned getSizeInBits() const {
|
|
if (isSimple())
|
|
return V.getSizeInBits();
|
|
return getExtendedSizeInBits();
|
|
}
|
|
|
|
unsigned getScalarSizeInBits() const {
|
|
return getScalarType().getSizeInBits();
|
|
}
|
|
|
|
/// getStoreSize - Return the number of bytes overwritten by a store
|
|
/// of the specified value type.
|
|
unsigned getStoreSize() const {
|
|
return (getSizeInBits() + 7) / 8;
|
|
}
|
|
|
|
/// getStoreSizeInBits - Return the number of bits overwritten by a store
|
|
/// of the specified value type.
|
|
unsigned getStoreSizeInBits() const {
|
|
return getStoreSize() * 8;
|
|
}
|
|
|
|
/// getRoundIntegerType - Rounds the bit-width of the given integer EVT up
|
|
/// to the nearest power of two (and at least to eight), and returns the
|
|
/// integer EVT with that number of bits.
|
|
EVT getRoundIntegerType(LLVMContext &Context) const {
|
|
assert(isInteger() && !isVector() && "Invalid integer type!");
|
|
unsigned BitWidth = getSizeInBits();
|
|
if (BitWidth <= 8)
|
|
return EVT(MVT::i8);
|
|
return getIntegerVT(Context, 1 << Log2_32_Ceil(BitWidth));
|
|
}
|
|
|
|
/// getHalfSizedIntegerVT - Finds the smallest simple value type that is
|
|
/// greater than or equal to half the width of this EVT. If no simple
|
|
/// value type can be found, an extended integer value type of half the
|
|
/// size (rounded up) is returned.
|
|
EVT getHalfSizedIntegerVT(LLVMContext &Context) const {
|
|
assert(isInteger() && !isVector() && "Invalid integer type!");
|
|
unsigned EVTSize = getSizeInBits();
|
|
for (unsigned IntVT = MVT::FIRST_INTEGER_VALUETYPE;
|
|
IntVT <= MVT::LAST_INTEGER_VALUETYPE; ++IntVT) {
|
|
EVT HalfVT = EVT((MVT::SimpleValueType)IntVT);
|
|
if (HalfVT.getSizeInBits() * 2 >= EVTSize)
|
|
return HalfVT;
|
|
}
|
|
return getIntegerVT(Context, (EVTSize + 1) / 2);
|
|
}
|
|
|
|
/// \brief Return a VT for an integer vector type with the size of the
|
|
/// elements doubled. The typed returned may be an extended type.
|
|
EVT widenIntegerVectorElementType(LLVMContext &Context) const {
|
|
EVT EltVT = getVectorElementType();
|
|
EltVT = EVT::getIntegerVT(Context, 2 * EltVT.getSizeInBits());
|
|
return EVT::getVectorVT(Context, EltVT, getVectorNumElements());
|
|
}
|
|
|
|
/// isPow2VectorType - Returns true if the given vector is a power of 2.
|
|
bool isPow2VectorType() const {
|
|
unsigned NElts = getVectorNumElements();
|
|
return !(NElts & (NElts - 1));
|
|
}
|
|
|
|
/// getPow2VectorType - Widens the length of the given vector EVT up to
|
|
/// the nearest power of 2 and returns that type.
|
|
EVT getPow2VectorType(LLVMContext &Context) const {
|
|
if (!isPow2VectorType()) {
|
|
unsigned NElts = getVectorNumElements();
|
|
unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts);
|
|
return EVT::getVectorVT(Context, getVectorElementType(), Pow2NElts);
|
|
}
|
|
else {
|
|
return *this;
|
|
}
|
|
}
|
|
|
|
/// getEVTString - This function returns value type as a string,
|
|
/// e.g. "i32".
|
|
std::string getEVTString() const;
|
|
|
|
/// getTypeForEVT - This method returns an LLVM type corresponding to the
|
|
/// specified EVT. For integer types, this returns an unsigned type. Note
|
|
/// that this will abort for types that cannot be represented.
|
|
Type *getTypeForEVT(LLVMContext &Context) const;
|
|
|
|
/// getEVT - Return the value type corresponding to the specified type.
|
|
/// This returns all pointers as iPTR. If HandleUnknown is true, unknown
|
|
/// types are returned as Other, otherwise they are invalid.
|
|
static EVT getEVT(Type *Ty, bool HandleUnknown = false);
|
|
|
|
intptr_t getRawBits() const {
|
|
if (isSimple())
|
|
return V.SimpleTy;
|
|
else
|
|
return (intptr_t)(LLVMTy);
|
|
}
|
|
|
|
/// compareRawBits - A meaningless but well-behaved order, useful for
|
|
/// constructing containers.
|
|
struct compareRawBits {
|
|
bool operator()(EVT L, EVT R) const {
|
|
if (L.V.SimpleTy == R.V.SimpleTy)
|
|
return L.LLVMTy < R.LLVMTy;
|
|
else
|
|
return L.V.SimpleTy < R.V.SimpleTy;
|
|
}
|
|
};
|
|
|
|
private:
|
|
// Methods for handling the Extended-type case in functions above.
|
|
// These are all out-of-line to prevent users of this header file
|
|
// from having a dependency on Type.h.
|
|
EVT changeExtendedVectorElementTypeToInteger() const;
|
|
static EVT getExtendedIntegerVT(LLVMContext &C, unsigned BitWidth);
|
|
static EVT getExtendedVectorVT(LLVMContext &C, EVT VT,
|
|
unsigned NumElements);
|
|
bool isExtendedFloatingPoint() const LLVM_READONLY;
|
|
bool isExtendedInteger() const LLVM_READONLY;
|
|
bool isExtendedVector() const LLVM_READONLY;
|
|
bool isExtended16BitVector() const LLVM_READONLY;
|
|
bool isExtended32BitVector() const LLVM_READONLY;
|
|
bool isExtended64BitVector() const LLVM_READONLY;
|
|
bool isExtended128BitVector() const LLVM_READONLY;
|
|
bool isExtended256BitVector() const LLVM_READONLY;
|
|
bool isExtended512BitVector() const LLVM_READONLY;
|
|
bool isExtended1024BitVector() const LLVM_READONLY;
|
|
EVT getExtendedVectorElementType() const;
|
|
unsigned getExtendedVectorNumElements() const LLVM_READONLY;
|
|
unsigned getExtendedSizeInBits() const;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|