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+//===- 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 <cassert>
+#include <string>
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/MathExtras.h"
+
+namespace llvm {
+ class Type;
+
+ struct MVT { // MVT = Machine Value Type
+ public:
+ enum SimpleValueType {
+ // If you change this numbering, you must change the values in
+ // ValueTypes.td as 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
+
+ FIRST_INTEGER_VALUETYPE = i1,
+ LAST_INTEGER_VALUETYPE = i128,
+
+ 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
+ ppcf128 = 11, // This is a PPC 128-bit floating point value
+ Flag = 12, // This is a condition code or machine flag.
+
+ isVoid = 13, // This has no value
+
+ v2i8 = 14, // 2 x i8
+ v4i8 = 15, // 4 x i8
+ v2i16 = 16, // 2 x i16
+ v8i8 = 17, // 8 x i8
+ v4i16 = 18, // 4 x i16
+ v2i32 = 19, // 2 x i32
+ v1i64 = 20, // 1 x i64
+ v16i8 = 21, // 16 x i8
+ v8i16 = 22, // 8 x i16
+ v3i32 = 23, // 3 x i32
+ v4i32 = 24, // 4 x i32
+ v2i64 = 25, // 2 x i64
+
+ v2f32 = 26, // 2 x f32
+ v3f32 = 27, // 3 x f32
+ v4f32 = 28, // 4 x f32
+ v2f64 = 29, // 2 x f64
+
+ FIRST_VECTOR_VALUETYPE = v2i8,
+ LAST_VECTOR_VALUETYPE = v2f64,
+
+ LAST_VALUETYPE = 30, // This always remains at the end of the list.
+
+ // iPTRAny - An int value the size of the pointer of the current
+ // target to any address space. This must only be used internal to
+ // tblgen. Other than for overloading, we treat iPTRAny the same as iPTR.
+ iPTRAny = 252,
+
+ // fAny - Any floating-point or vector floating-point value. This is used
+ // for intrinsics that have overloadings based on floating-point types.
+ // This is only for tblgen's consumption!
+ fAny = 253,
+
+ // iAny - An integer or vector integer value of any bit width. This is
+ // used for intrinsics that have overloadings based on integer bit widths.
+ // This is only for tblgen's consumption!
+ iAny = 254,
+
+ // iPTR - An int value the size of the pointer of the current
+ // target. This should only be used internal to tblgen!
+ iPTR = 255,
+
+ // LastSimpleValueType - The greatest valid SimpleValueType value.
+ LastSimpleValueType = 255
+ };
+
+ private:
+ /// This union holds low-level value types. Valid values include any of
+ /// the values in the SimpleValueType enum, or any value returned from one
+ /// of the MVT methods. Any value type equal to one of the SimpleValueType
+ /// enum values is a "simple" value type. All others are "extended".
+ ///
+ /// Note that simple doesn't necessary mean legal for the target machine.
+ /// All legal value types must be simple, but often there are some simple
+ /// value types that are not legal.
+ ///
+ union {
+ uintptr_t V;
+ const Type *LLVMTy;
+ };
+
+ public:
+ MVT() {}
+ MVT(SimpleValueType S) : V(S) {}
+
+ bool operator==(const MVT VT) const {
+ return getRawBits() == VT.getRawBits();
+ }
+ bool operator!=(const MVT VT) const {
+ return getRawBits() != VT.getRawBits();
+ }
+
+ /// getFloatingPointVT - Returns the MVT 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 MVT getFloatingPointVT(unsigned BitWidth) {
+ switch (BitWidth) {
+ default:
+ assert(false && "Bad bit width!");
+ case 32:
+ return f32;
+ case 64:
+ return f64;
+ case 80:
+ return f80;
+ case 128:
+ return f128;
+ }
+ }
+
+ /// getIntegerVT - Returns the MVT that represents an integer with the given
+ /// number of bits.
+ static MVT getIntegerVT(unsigned BitWidth) {
+ switch (BitWidth) {
+ default:
+ break;
+ case 1:
+ return i1;
+ case 8:
+ return i8;
+ case 16:
+ return i16;
+ case 32:
+ return i32;
+ case 64:
+ return i64;
+ case 128:
+ return i128;
+ }
+ return getExtendedIntegerVT(BitWidth);
+ }
+
+ /// getVectorVT - Returns the MVT that represents a vector NumElements in
+ /// length, where each element is of type VT.
+ static MVT getVectorVT(MVT VT, unsigned NumElements) {
+ switch (VT.V) {
+ default:
+ break;
+ case i8:
+ if (NumElements == 2) return v2i8;
+ if (NumElements == 4) return v4i8;
+ if (NumElements == 8) return v8i8;
+ if (NumElements == 16) return v16i8;
+ break;
+ case i16:
+ if (NumElements == 2) return v2i16;
+ if (NumElements == 4) return v4i16;
+ if (NumElements == 8) return v8i16;
+ break;
+ case i32:
+ if (NumElements == 2) return v2i32;
+ if (NumElements == 3) return v3i32;
+ if (NumElements == 4) return v4i32;
+ break;
+ case i64:
+ if (NumElements == 1) return v1i64;
+ if (NumElements == 2) return v2i64;
+ break;
+ case f32:
+ if (NumElements == 2) return v2f32;
+ if (NumElements == 3) return v3f32;
+ if (NumElements == 4) return v4f32;
+ break;
+ case f64:
+ if (NumElements == 2) return v2f64;
+ break;
+ }
+ return getExtendedVectorVT(VT, NumElements);
+ }
+
+ /// getIntVectorWithNumElements - Return any integer vector type that has
+ /// the specified number of elements.
+ static MVT getIntVectorWithNumElements(unsigned NumElts) {
+ switch (NumElts) {
+ default: return getVectorVT(i8, NumElts);
+ case 1: return v1i64;
+ case 2: return v2i32;
+ case 3: return v3i32;
+ case 4: return v4i16;
+ case 8: return v8i8;
+ case 16: return v16i8;
+ }
+ }
+
+ /// isSimple - Test if the given MVT is simple (as opposed to being
+ /// extended).
+ bool isSimple() const {
+ return V <= LastSimpleValueType;
+ }
+
+ /// isExtended - Test if the given MVT 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 >= f32 && V <= ppcf128) || (V >= v2f32 && V <= v2f64)) :
+ isExtendedFloatingPoint();
+ }
+
+ /// isInteger - Return true if this is an integer, or a vector integer type.
+ bool isInteger() const {
+ return isSimple() ?
+ ((V >= FIRST_INTEGER_VALUETYPE && V <= LAST_INTEGER_VALUETYPE) ||
+ (V >= v2i8 && V <= v2i64)) : isExtendedInteger();
+ }
+
+ /// isVector - Return true if this is a vector value type.
+ bool isVector() const {
+ return isSimple() ?
+ (V >= FIRST_VECTOR_VALUETYPE && V <= LAST_VECTOR_VALUETYPE) :
+ isExtendedVector();
+ }
+
+ /// is64BitVector - Return true if this is a 64-bit vector type.
+ bool is64BitVector() const {
+ return isSimple() ?
+ (V==v8i8 || V==v4i16 || V==v2i32 || V==v1i64 || V==v2f32) :
+ isExtended64BitVector();
+ }
+
+ /// is128BitVector - Return true if this is a 128-bit vector type.
+ bool is128BitVector() const {
+ return isSimple() ?
+ (V==v16i8 || V==v8i16 || V==v4i32 ||
+ V==v2i64 || V==v4f32 || V==v2f64) :
+ isExtended128BitVector();
+ }
+
+ /// 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(MVT VT) const {
+ return getSizeInBits() == VT.getSizeInBits();
+ }
+
+ /// bitsGT - Return true if this has more bits than VT.
+ bool bitsGT(MVT VT) const {
+ return getSizeInBits() > VT.getSizeInBits();
+ }
+
+ /// bitsGE - Return true if this has no less bits than VT.
+ bool bitsGE(MVT VT) const {
+ return getSizeInBits() >= VT.getSizeInBits();
+ }
+
+ /// bitsLT - Return true if this has less bits than VT.
+ bool bitsLT(MVT VT) const {
+ return getSizeInBits() < VT.getSizeInBits();
+ }
+
+ /// bitsLE - Return true if this has no more bits than VT.
+ bool bitsLE(MVT VT) const {
+ return getSizeInBits() <= VT.getSizeInBits();
+ }
+
+
+ /// getSimpleVT - Return the SimpleValueType held in the specified
+ /// simple MVT.
+ SimpleValueType getSimpleVT() const {
+ assert(isSimple() && "Expected a SimpleValueType!");
+ return SimpleValueType(V);
+ }
+
+ /// getVectorElementType - Given a vector type, return the type of
+ /// each element.
+ MVT getVectorElementType() const {
+ assert(isVector() && "Invalid vector type!");
+ switch (V) {
+ default:
+ return getExtendedVectorElementType();
+ case v2i8 :
+ case v4i8 :
+ case v8i8 :
+ case v16i8: return i8;
+ case v2i16:
+ case v4i16:
+ case v8i16: return i16;
+ case v2i32:
+ case v3i32:
+ case v4i32: return i32;
+ case v1i64:
+ case v2i64: return i64;
+ case v2f32:
+ case v3f32:
+ case v4f32: return f32;
+ case v2f64: return f64;
+ }
+ }
+
+ /// getVectorNumElements - Given a vector type, return the number of
+ /// elements it contains.
+ unsigned getVectorNumElements() const {
+ assert(isVector() && "Invalid vector type!");
+ switch (V) {
+ default:
+ return getExtendedVectorNumElements();
+ case v16i8: return 16;
+ case v8i8 :
+ case v8i16: return 8;
+ case v4i8:
+ case v4i16:
+ case v4i32:
+ case v4f32: return 4;
+ case v3i32:
+ case v3f32: return 3;
+ case v2i8:
+ case v2i16:
+ case v2i32:
+ case v2i64:
+ case v2f32:
+ case v2f64: return 2;
+ case v1i64: return 1;
+ }
+ }
+
+ /// getSizeInBits - Return the size of the specified value type in bits.
+ unsigned getSizeInBits() const {
+ switch (V) {
+ case iPTR:
+ assert(0 && "Value type size is target-dependent. Ask TLI.");
+ case iPTRAny:
+ case iAny:
+ case fAny:
+ assert(0 && "Value type is overloaded.");
+ default:
+ return getExtendedSizeInBits();
+ case i1 : return 1;
+ case i8 : return 8;
+ case i16 :
+ case v2i8: return 16;
+ case f32 :
+ case i32 :
+ case v4i8:
+ case v2i16: return 32;
+ case f64 :
+ case i64 :
+ case v8i8:
+ case v4i16:
+ case v2i32:
+ case v1i64:
+ case v2f32: return 64;
+ case f80 : return 80;
+ case v3i32:
+ case v3f32: return 96;
+ case f128:
+ case ppcf128:
+ case i128:
+ case v16i8:
+ case v8i16:
+ case v4i32:
+ case v2i64:
+ case v4f32:
+ case v2f64: return 128;
+ }
+ }
+
+ /// getStoreSizeInBits - Return the number of bits overwritten by a store
+ /// of the specified value type.
+ unsigned getStoreSizeInBits() const {
+ return (getSizeInBits() + 7)/8*8;
+ }
+
+ /// getRoundIntegerType - Rounds the bit-width of the given integer MVT up
+ /// to the nearest power of two (and at least to eight), and returns the
+ /// integer MVT with that number of bits.
+ MVT getRoundIntegerType() const {
+ assert(isInteger() && !isVector() && "Invalid integer type!");
+ unsigned BitWidth = getSizeInBits();
+ if (BitWidth <= 8)
+ return i8;
+ else
+ return getIntegerVT(1 << Log2_32_Ceil(BitWidth));
+ }
+
+ /// isPow2VectorType - Retuns 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 MVT up to
+ /// the nearest power of 2 and returns that type.
+ MVT getPow2VectorType() const {
+ if (!isPow2VectorType()) {
+ unsigned NElts = getVectorNumElements();
+ unsigned Pow2NElts = 1 << Log2_32_Ceil(NElts);
+ return MVT::getVectorVT(getVectorElementType(), Pow2NElts);
+ }
+ else {
+ return *this;
+ }
+ }
+
+ /// getMVTString - This function returns value type as a string,
+ /// e.g. "i32".
+ std::string getMVTString() const;
+
+ /// getTypeForMVT - This method returns an LLVM type corresponding to the
+ /// specified MVT. For integer types, this returns an unsigned type. Note
+ /// that this will abort for types that cannot be represented.
+ const Type *getTypeForMVT() const;
+
+ /// getMVT - 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 MVT getMVT(const Type *Ty, bool HandleUnknown = false);
+
+ /// getRawBits - Represent the type as a bunch of bits.
+ uintptr_t getRawBits() const { return V; }
+
+ /// compareRawBits - A meaningless but well-behaved order, useful for
+ /// constructing containers.
+ struct compareRawBits {
+ bool operator()(MVT L, MVT R) const {
+ return L.getRawBits() < R.getRawBits();
+ }
+ };
+
+ 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.
+ static MVT getExtendedIntegerVT(unsigned BitWidth);
+ static MVT getExtendedVectorVT(MVT VT, unsigned NumElements);
+ bool isExtendedFloatingPoint() const;
+ bool isExtendedInteger() const;
+ bool isExtendedVector() const;
+ bool isExtended64BitVector() const;
+ bool isExtended128BitVector() const;
+ MVT getExtendedVectorElementType() const;
+ unsigned getExtendedVectorNumElements() const;
+ unsigned getExtendedSizeInBits() const;
+ };
+
+} // End llvm namespace
+
+#endif
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