2 Commits

Author	SHA1	Message	Date
Farzon Lotfi	8386a388bd	[HLSL] implement clamp intrinsic (#85424) ... closes #70071 - `CGBuiltin.cpp` - Add the unsigned\generic clamp intrinsic emitter. - `IntrinsicsDirectX.td` - add the `dx.clamp` & `dx.uclamp` intrinsics - `DXILIntrinsicExpansion.cpp` - add the `clamp` instruction expansion while maintaining vector form. - `SemaChecking.cpp` - Add `clamp` builtin Sema Checks. - `Builtins.td` - add a `clamp` builtin - `hlsl_intrinsics.h` - add the `clamp` api Why `clamp` as instruction expansion for DXIL? 1. SPIR-V has a GLSL `clamp` extension via: - [FClamp](https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#FClamp) - [UClamp](https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#UClamp) - [SClamp](https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#SClamp) 2. Further Clamp lowers to `min(max( x, min_range ), max_range)` which we have float, signed, & unsigned dixilOps.	2024-03-15 20:57:08 -04:00
python3kgae	435897b41d	[TableGen][DirectX] Add tableGen backend to generate DXIL operation for DirectX backend. ... A new tableGen backend gen-dxil-enum is added to generate enum for DXIL operation and operation class. A new file "DXILConstants.inc" will be generated when build DirectX target which include the enums. More tableGen backends will be added to replace manually written table in DirectX backend. The unused fields in dxil_inst will be used in future PR. Reviewed By: bogner Differential Revision: https://reviews.llvm.org/D125435	2022-06-14 17:31:58 -07:00