diff options
Diffstat (limited to 'llvm/lib/Target/DirectX/DXIL.td')
| -rw-r--r-- | llvm/lib/Target/DirectX/DXIL.td | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/llvm/lib/Target/DirectX/DXIL.td b/llvm/lib/Target/DirectX/DXIL.td index 9536a01e125b..66b0ef24332c 100644 --- a/llvm/lib/Target/DirectX/DXIL.td +++ b/llvm/lib/Target/DirectX/DXIL.td @@ -205,28 +205,71 @@ defset list<DXILOpClass> OpClasses = { def writeSamplerFeedbackBias : DXILOpClass; def writeSamplerFeedbackGrad : DXILOpClass; def writeSamplerFeedbackLevel: DXILOpClass; + + // This is a sentinel definition. Hence placed at the end of the list + // and not as part of the above alphabetically sorted valid definitions. + // Additionally it is capitalized unlike all the others. + def UnknownOpClass: DXILOpClass; +} + +// Several of the overloaded DXIL Operations support for data types +// that are a subset of the overloaded LLVM intrinsics that they map to. +// For e.g., llvm.sin.* intrinsic operates on any floating-point type and +// maps for lowering to DXIL Op Sin. However, valid overloads of DXIL Sin +// operation overloads are half (f16) and float (f32) only. +// +// The following abstracts overload types specific to DXIL operations. + +class DXILType : LLVMType<OtherVT> { + let isAny = 1; + int isI16OrI32 = 0; + int isHalfOrFloat = 0; } +// Concrete records for various overload types supported specifically by +// DXIL Operations. +let isI16OrI32 = 1 in + def llvm_i16ori32_ty : DXILType; + +let isHalfOrFloat = 1 in + def llvm_halforfloat_ty : DXILType; + // Abstraction DXIL Operation to LLVM intrinsic -class DXILOpMapping<int opCode, DXILOpClass opClass, Intrinsic intrinsic, string doc> { +class DXILOpMappingBase { + int OpCode = 0; // Opcode of DXIL Operation + DXILOpClass OpClass = UnknownOpClass;// Class of DXIL Operation. + Intrinsic LLVMIntrinsic = ?; // LLVM Intrinsic DXIL Operation maps to + string Doc = ""; // A short description of the operation + list<LLVMType> OpTypes = ?; // Valid types of DXIL Operation in the + // format [returnTy, param1ty, ...] +} + +class DXILOpMapping<int opCode, DXILOpClass opClass, + Intrinsic intrinsic, string doc, + list<LLVMType> opTys = []> : DXILOpMappingBase { int OpCode = opCode; // Opcode corresponding to DXIL Operation - DXILOpClass OpClass = opClass; // Class of DXIL Operation. + DXILOpClass OpClass = opClass; // Class of DXIL Operation. Intrinsic LLVMIntrinsic = intrinsic; // LLVM Intrinsic the DXIL Operation maps string Doc = doc; // to a short description of the operation + list<LLVMType> OpTypes = !if(!eq(!size(opTys), 0), LLVMIntrinsic.Types, opTys); } // Concrete definition of DXIL Operation mapping to corresponding LLVM intrinsic def Sin : DXILOpMapping<13, unary, int_sin, - "Returns sine(theta) for theta in radians.">; + "Returns sine(theta) for theta in radians.", + [llvm_halforfloat_ty, LLVMMatchType<0>]>; def Exp2 : DXILOpMapping<21, unary, int_exp2, "Returns the base 2 exponential, or 2**x, of the specified value." - "exp2(x) = 2**x.">; + "exp2(x) = 2**x.", + [llvm_halforfloat_ty, LLVMMatchType<0>]>; def Frac : DXILOpMapping<22, unary, int_dx_frac, "Returns a fraction from 0 to 1 that represents the " - "decimal part of the input.">; + "decimal part of the input.", + [llvm_halforfloat_ty, LLVMMatchType<0>]>; def Round : DXILOpMapping<26, unary, int_round, "Returns the input rounded to the nearest integer" - "within a floating-point type.">; + "within a floating-point type.", + [llvm_halforfloat_ty, LLVMMatchType<0>]>; def UMax : DXILOpMapping<39, binary, int_umax, "Unsigned integer maximum. UMax(a,b) = a > b ? a : b">; def FMad : DXILOpMapping<46, tertiary, int_fmuladd, |