X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FType.h;h=fe3c392c7c6cd03f597aca9ead7c76c7800fcc7f;hb=a6fb5b54f3a35fdefbb03b9c7be4c6d6d53cdd35;hp=72e70b44a95a728ed7c8db0f154ed7d68525d66c;hpb=ef1af7d6d5be039e7eea46f8f3a2720fb5a1a153;p=oota-llvm.git diff --git a/include/llvm/Type.h b/include/llvm/Type.h index 72e70b44a95..fe3c392c7c6 100644 --- a/include/llvm/Type.h +++ b/include/llvm/Type.h @@ -2,8 +2,8 @@ // // 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. // //===----------------------------------------------------------------------===// @@ -16,7 +16,7 @@ #include "llvm/Support/DataTypes.h" #include "llvm/Support/Streams.h" #include "llvm/ADT/GraphTraits.h" -#include "llvm/ADT/iterator" +#include "llvm/ADT/iterator.h" #include #include @@ -80,11 +80,10 @@ public: IntegerTyID, ///< 7: Arbitrary bit width integers FunctionTyID, ///< 8: Functions StructTyID, ///< 9: Structures - PackedStructTyID,///< 10: Packed Structure. This is for bitcode only - ArrayTyID, ///< 11: Arrays - PointerTyID, ///< 12: Pointers - OpaqueTyID, ///< 13: Opaque: type with unknown structure - VectorTyID, ///< 14: SIMD 'packed' format, or other vector type + ArrayTyID, ///< 10: Arrays + PointerTyID, ///< 11: Pointers + OpaqueTyID, ///< 12: Opaque: type with unknown structure + VectorTyID, ///< 13: SIMD 'packed' format, or other vector type NumTypeIDs, // Must remain as last defined ID LastPrimitiveTyID = LabelTyID, @@ -213,13 +212,33 @@ public: inline bool isPrimitiveType() const { return ID <= LastPrimitiveTyID; } inline bool isDerivedType() const { return ID >= FirstDerivedTyID; } - /// isFirstClassType - Return true if the value is holdable in a register. + /// isFirstClassType - Return true if the type is "first class", meaning it + /// is a valid type for a Value. /// inline bool isFirstClassType() const { + // There are more first-class kinds than non-first-class kinds, so a + // negative test is simpler than a positive one. + return ID != FunctionTyID && ID != VoidTyID && ID != OpaqueTyID; + } + + /// isSingleValueType - Return true if the type is a valid type for a + /// virtual register in codegen. This includes all first-class types + /// except struct and array types. + /// + inline bool isSingleValueType() const { return (ID != VoidTyID && ID <= LastPrimitiveTyID) || ID == IntegerTyID || ID == PointerTyID || ID == VectorTyID; } + /// isAggregateType - Return true if the type is an aggregate type. This + /// means it is valid as the first operand of an insertvalue or + /// extractvalue instruction. This includes struct and array types, but + /// does not include vector types. + /// + inline bool isAggregateType() const { + return ID == StructTyID || ID == ArrayTyID; + } + /// isSized - Return true if it makes sense to take the size of this type. To /// get the actual size for a particular target, it is reasonable to use the /// TargetData subsystem to do this. @@ -230,8 +249,7 @@ public: return true; // If it is not something that can have a size (e.g. a function or label), // it doesn't have a size. - if (ID != StructTyID && ID != ArrayTyID && ID != VectorTyID && - ID != PackedStructTyID) + if (ID != StructTyID && ID != ArrayTyID && ID != VectorTyID) return false; // If it is something that can have a size and it's concrete, it definitely // has a size, otherwise we have to try harder to decide. @@ -244,8 +262,21 @@ public: /// primitive type. /// unsigned getPrimitiveSizeInBits() const; + + /// getFPMantissaWidth - Return the width of the mantissa of this type. This + /// is only valid on scalar floating point types. If the FP type does not + /// have a stable mantissa (e.g. ppc long double), this method returns -1. + int getFPMantissaWidth() const { + assert(isFloatingPoint() && "Not a floating point type!"); + if (ID == FloatTyID) return 24; + if (ID == DoubleTyID) return 53; + if (ID == X86_FP80TyID) return 64; + if (ID == FP128TyID) return 113; + assert(ID == PPC_FP128TyID && "unknown fp type"); + return -1; + } - /// getForwaredType - Return the type that this type has been resolved to if + /// getForwardedType - Return the type that this type has been resolved to if /// it has been resolved to anything. This is used to implement the /// union-find algorithm for type resolution, and shouldn't be used by general /// purpose clients. @@ -295,7 +326,7 @@ public: static const IntegerType *Int1Ty, *Int8Ty, *Int16Ty, *Int32Ty, *Int64Ty; /// Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const Type *T) { return true; } + static inline bool classof(const Type *) { return true; } void addRef() const { assert(isAbstract() && "Cannot add a reference to a non-abstract type!"); @@ -359,9 +390,10 @@ inline void PATypeHandle::removeUser() { Ty->removeAbstractTypeUser(User); } -// Define inline methods for PATypeHolder... +// Define inline methods for PATypeHolder. inline void PATypeHolder::addRef() { + assert(Ty && "Type Holder has a null type!"); if (Ty->isAbstract()) Ty->addRef(); }