Finn Plummer e520b28397
[DXIL][SPIRV] Lower WaveActiveCountBits intrinsic (#113382)
```
  - add codegen for llvm builtin to spirv/directx intrinsic in CGBuiltin.cpp
  - add lowering of spirv intrinsic to spirv backend in SPIRVInstructionSelector.cpp
  - add lowering of directx intrinsic to dxil op in DXIL.td

  - add test cases to illustrate passes
  - add test case for semantic analysis
```
  
Resolves #80176
2024-11-07 19:06:37 -08:00
..