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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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include/llvm-c/Core.h
+3
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@@ -203,6 +203,7 @@ typedef enum {
typedef enum {
LLVMVoidTypeKind, /**< type with no size */
LLVMHalfTypeKind, /**< 16 bit floating point type */
LLVMFloatTypeKind, /**< 32 bit floating point type */
LLVMDoubleTypeKind, /**< 64 bit floating point type */
LLVMX86_FP80TypeKind, /**< 80 bit floating point type (X87) */
@@ -382,12 +383,14 @@ LLVMTypeRef LLVMIntType(unsigned NumBits);
unsigned LLVMGetIntTypeWidth(LLVMTypeRef IntegerTy);
/* Operations on real types */
LLVMTypeRef LLVMHalfTypeInContext(LLVMContextRef C);
LLVMTypeRef LLVMFloatTypeInContext(LLVMContextRef C);
LLVMTypeRef LLVMDoubleTypeInContext(LLVMContextRef C);
LLVMTypeRef LLVMX86FP80TypeInContext(LLVMContextRef C);
LLVMTypeRef LLVMFP128TypeInContext(LLVMContextRef C);
LLVMTypeRef LLVMPPCFP128TypeInContext(LLVMContextRef C);
LLVMTypeRef LLVMHalfType(void);
LLVMTypeRef LLVMFloatType(void);
LLVMTypeRef LLVMDoubleType(void);
LLVMTypeRef LLVMX86FP80Type(void);
include/llvm/Bitcode/LLVMBitCodes.h
+1 -1
View File
@@ -94,7 +94,7 @@ namespace bitc {
TYPE_CODE_FUNCTION_OLD = 9, // FUNCTION: [vararg, attrid, retty,
// paramty x N]
// Code #10 is unused.
TYPE_CODE_HALF = 10, // HALF
TYPE_CODE_ARRAY = 11, // ARRAY: [numelts, eltty]
TYPE_CODE_VECTOR = 12, // VECTOR: [numelts, eltty]
include/llvm/Type.h
+21 -15
View File
@@ -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);