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The powers that be have decided that LLVM IR should now support 16-bit

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"half precision" floating-point with a first-class type.

This patch adds basic IR support (but not codegen support).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146786 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2011-12-17 00:04:22 +00:00
parent 2e1b0c0cd9
commit ce16339930
18 changed files with 123 additions and 56 deletions
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36
include/llvm/Type.h
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@ -47,23 +47,24 @@ public:
enum TypeID {
// PrimitiveTypes - make sure LastPrimitiveTyID stays up to date.
VoidTyID = 0, ///< 0: type with no size
FloatTyID, ///< 1: 32-bit floating point type
DoubleTyID, ///< 2: 64-bit floating point type
X86_FP80TyID, ///< 3: 80-bit floating point type (X87)
FP128TyID, ///< 4: 128-bit floating point type (112-bit mantissa)
PPC_FP128TyID, ///< 5: 128-bit floating point type (two 64-bits, PowerPC)
LabelTyID, ///< 6: Labels
MetadataTyID, ///< 7: Metadata
X86_MMXTyID, ///< 8: MMX vectors (64 bits, X86 specific)
HalfTyID, ///< 1: 32-bit floating point type
FloatTyID, ///< 2: 32-bit floating point type
DoubleTyID, ///< 3: 64-bit floating point type
X86_FP80TyID, ///< 4: 80-bit floating point type (X87)
FP128TyID, ///< 5: 128-bit floating point type (112-bit mantissa)
PPC_FP128TyID, ///< 6: 128-bit floating point type (two 64-bits, PowerPC)
LabelTyID, ///< 7: Labels
MetadataTyID, ///< 8: Metadata
X86_MMXTyID, ///< 9: MMX vectors (64 bits, X86 specific)
// Derived types... see DerivedTypes.h file.
// Make sure FirstDerivedTyID stays up to date!
IntegerTyID, ///< 9: Arbitrary bit width integers
FunctionTyID, ///< 10: Functions
StructTyID, ///< 11: Structures
ArrayTyID, ///< 12: Arrays
PointerTyID, ///< 13: Pointers
VectorTyID, ///< 14: SIMD 'packed' format, or other vector type
IntegerTyID, ///< 10: Arbitrary bit width integers
FunctionTyID, ///< 11: Functions
StructTyID, ///< 12: Structures
ArrayTyID, ///< 13: Arrays
PointerTyID, ///< 14: Pointers
VectorTyID, ///< 15: SIMD 'packed' format, or other vector type
NumTypeIDs, // Must remain as last defined ID
LastPrimitiveTyID = X86_MMXTyID,
@ -121,6 +122,9 @@ public:
/// isVoidTy - Return true if this is 'void'.
bool isVoidTy() const { return ID == VoidTyID; }
/// isHalfTy - Return true if this is 'half', a 16-bit IEEE fp type.
bool isHalfTy() const { return ID == HalfTyID; }
/// isFloatTy - Return true if this is 'float', a 32-bit IEEE fp type.
bool isFloatTy() const { return ID == FloatTyID; }
@ -139,7 +143,7 @@ public:
/// isFloatingPointTy - Return true if this is one of the five floating point
/// types
bool isFloatingPointTy() const {
return ID == FloatTyID || ID == DoubleTyID ||
return ID == HalfTyID || ID == FloatTyID || ID == DoubleTyID ||
ID == X86_FP80TyID || ID == FP128TyID || ID == PPC_FP128TyID;
}
@ -310,6 +314,7 @@ public:
//
static Type *getVoidTy(LLVMContext &C);
static Type *getLabelTy(LLVMContext &C);
static Type *getHalfTy(LLVMContext &C);
static Type *getFloatTy(LLVMContext &C);
static Type *getDoubleTy(LLVMContext &C);
static Type *getMetadataTy(LLVMContext &C);
@ -328,6 +333,7 @@ public:
// Convenience methods for getting pointer types with one of the above builtin
// types as pointee.
//
static PointerType *getHalfPtrTy(LLVMContext &C, unsigned AS = 0);
static PointerType *getFloatPtrTy(LLVMContext &C, unsigned AS = 0);
static PointerType *getDoublePtrTy(LLVMContext &C, unsigned AS = 0);
static PointerType *getX86_FP80PtrTy(LLVMContext &C, unsigned AS = 0);