+
+ /// 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);
+ }