//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#ifndef LLVM_CODEGEN_VALUETYPES_H
#define LLVM_CODEGEN_VALUETYPES_H
+#include "llvm/CodeGen/MachineValueType.h"
#include <cassert>
-#include "llvm/Support/DataTypes.h"
+#include <string>
namespace llvm {
+
+ class LLVMContext;
class Type;
-/// MVT namespace - This namespace defines the ValueType enum, which contains
-/// the various low-level value types.
-///
-namespace MVT { // MVT = Machine Value Types
- enum ValueType {
- // If you change this numbering, you must change the values in ValueTypes.td
- // well!
- Other = 0, // This is a non-standard value
- i1 = 1, // This is a 1 bit integer value
- i8 = 2, // This is an 8 bit integer value
- i16 = 3, // This is a 16 bit integer value
- i32 = 4, // This is a 32 bit integer value
- i64 = 5, // This is a 64 bit integer value
- i128 = 6, // This is a 128 bit integer value
-
- f32 = 7, // This is a 32 bit floating point value
- f64 = 8, // This is a 64 bit floating point value
- f80 = 9, // This is a 80 bit floating point value
- f128 = 10, // This is a 128 bit floating point value
- Flag = 11, // This is a condition code or machine flag.
-
- isVoid = 12, // This has no value
-
- Vector = 13, // This is an abstract vector type, which will
- // be expanded into a target vector type, or scalars
- // if no matching vector type is available.
-
- v8i8 = 14, // 8 x i8
- v4i16 = 15, // 4 x i16
- v2i32 = 16, // 2 x i32
- v1i64 = 17, // 1 x i64
- v16i8 = 18, // 16 x i8
- v8i16 = 19, // 8 x i16
- v4i32 = 20, // 4 x i32
- v2i64 = 21, // 2 x i64
-
- v2f32 = 22, // 2 x f32
- v4f32 = 23, // 4 x f32
- v2f64 = 24, // 2 x f64
- FIRST_VECTOR_VALUETYPE = v8i8,
- LAST_VECTOR_VALUETYPE = v2f64,
-
- LAST_VALUETYPE = 25, // This always remains at the end of the list.
-
- // iPTR - An int value the size of the pointer of the current
- // target. This should only be used internal to tblgen!
- iPTR = 255
- };
+ /// 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:
+ LLVM_CONSTEXPR EVT() : V(MVT::INVALID_SIMPLE_VALUE_TYPE), LLVMTy(nullptr) {}
+ LLVM_CONSTEXPR EVT(MVT::SimpleValueType SVT) : V(SVT), LLVMTy(nullptr) {}
+ LLVM_CONSTEXPR 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;
+ }
+
+ /// Return the type converted to an equivalently sized integer or vector
+ /// with integer element type. Similar to changeVectorElementTypeToInteger,
+ /// but also handles scalars.
+ EVT changeTypeToInteger() {
+ if (isVector())
+ return changeVectorElementTypeToInteger();
+
+ if (isSimple())
+ return MVT::getIntegerVT(getSizeInBits());
+
+ return changeExtendedTypeToInteger();
+ }
+
+ /// 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();
+ }
+
+ /// is2048BitVector - Return true if this is a 2048-bit vector type.
+ bool is2048BitVector() const {
+ return isSimple() ? V.is2048BitVector() : isExtended2048BitVector();
+ }
+
+ /// 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();
+ }
- /// MVT::isInteger - Return true if this is a simple integer, or a packed
- /// vector integer type.
- static inline bool isInteger(ValueType VT) {
- return (VT >= i1 && VT <= i128) || (VT >= v8i8 && VT <= v2i64);
- }
-
- /// MVT::isFloatingPoint - Return true if this is a simple FP, or a packed
- /// vector FP type.
- static inline bool isFloatingPoint(ValueType VT) {
- return (VT >= f32 && VT <= f128) || (VT >= v4f32 && VT <= v2f64);
- }
-
- /// MVT::isVector - Return true if this is a packed vector type (i.e. not
- /// MVT::Vector).
- static inline bool isVector(ValueType VT) {
- return VT >= FIRST_VECTOR_VALUETYPE && VT <= LAST_VECTOR_VALUETYPE;
- }
-
- /// MVT::getSizeInBits - Return the size of the specified value type in bits.
- ///
- static inline unsigned getSizeInBits(ValueType VT) {
- switch (VT) {
- default: assert(0 && "ValueType has no known size!");
- case MVT::i1 : return 1;
- case MVT::i8 : return 8;
- case MVT::i16 : return 16;
- case MVT::f32 :
- case MVT::i32 : return 32;
- case MVT::f64 :
- case MVT::i64 :
- case MVT::v8i8:
- case MVT::v4i16:
- case MVT::v2i32:
- case MVT::v1i64:
- case MVT::v2f32: return 64;
- case MVT::f80 : return 80;
- case MVT::f128:
- case MVT::i128:
- case MVT::v16i8:
- case MVT::v8i16:
- case MVT::v4i32:
- case MVT::v2i64:
- case MVT::v4f32:
- case MVT::v2f64: return 128;
- }
- }
-
- /// MVT::getVectorType - Returns the ValueType that represents a vector
- /// NumElements in length, where each element is of type VT. If there is no
- /// ValueType that represents this vector, a ValueType of Other is returned.
- ///
- ValueType getVectorType(ValueType VT, unsigned NumElements);
-
- /// MVT::getVectorBaseType - Given a packed vector type, return the type of
- /// each element.
- static inline ValueType getVectorBaseType(ValueType VT) {
- switch (VT) {
- default: assert(0 && "Invalid vector type!");
- case v8i8 :
- case v16i8: return i8;
- case v4i16:
- case v8i16: return i16;
- case v2i32:
- case v4i32: return i32;
- case v1i64:
- case v2i64: return i64;
- case v2f32:
- case v4f32: return f32;
- case v2f64: return f64;
- }
- }
-
- /// MVT::getVectorNumElements - Given a packed vector type, return the number
- /// of elements it contains.
- static inline unsigned getVectorNumElements(ValueType VT) {
- switch (VT) {
- default: assert(0 && "Invalid vector type!");
- case v16i8: return 16;
- case v8i8 :
- case v8i16: return 8;
- case v4i16:
- case v4i32:
- case v4f32: return 4;
- case v2i32:
- case v2i64:
- case v2f32:
- case v2f64: return 2;
- case v1i64: return 1;
- }
- }
-
- /// MVT::getIntVectorWithNumElements - Return any integer vector type that has
- /// the specified number of elements.
- static inline ValueType getIntVectorWithNumElements(unsigned NumElts) {
- switch (NumElts) {
- default: assert(0 && "Invalid vector type!");
- case 1: return v1i64;
- case 2: return v2i32;
- case 4: return v4i16;
- case 8: return v8i8;
- case 16: return v16i8;
- }
- }
-
-
- /// MVT::getIntVTBitMask - Return an integer with 1's every place there are
- /// bits in the specified integer value type.
- static inline uint64_t getIntVTBitMask(ValueType VT) {
- assert(isInteger(VT) && !isVector(VT) && "Only applies to int scalars!");
- return ~uint64_t(0UL) >> (64-getSizeInBits(VT));
- }
- /// MVT::getIntVTSignBit - Return an integer with a 1 in the position of the
- /// sign bit for the specified integer value type.
- static inline uint64_t getIntVTSignBit(ValueType VT) {
- assert(isInteger(VT) && !isVector(VT) && "Only applies to int scalars!");
- return uint64_t(1UL) << (getSizeInBits(VT)-1);
- }
-
- /// MVT::getValueTypeString - This function returns value type as a string,
- /// e.g. "i32".
- const char *getValueTypeString(ValueType VT);
-
- /// MVT::getTypeForValueType - This method returns an LLVM type corresponding
- /// to the specified ValueType. For integer types, this returns an unsigned
- /// type. Note that this will abort for types that cannot be represented.
- const Type *getTypeForValueType(ValueType VT);
-}
+ 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 changeExtendedTypeToInteger() const;
+ 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;
+ bool isExtended2048BitVector() const LLVM_READONLY;
+ EVT getExtendedVectorElementType() const;
+ unsigned getExtendedVectorNumElements() const LLVM_READONLY;
+ unsigned getExtendedSizeInBits() const;
+ };
} // End llvm namespace
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