[milestone] Compile particle_life.hlsl

[damyanp]

This milestone shows that clang is able to compile and run a simple, but non-trivial, compute shader.

https://github.com/damyanp/dplife/blob/main/src/particle_life/particle_life.hlsl

Workstreams

Language (#21)

• Basic type declarations (e.g. uint, int, half, ...)
• Vector type declarations (e.g. vector<T,N>, float3, int4, ...)
• Vector cast-construction syntax (e.g. float3(x,x,x))
• Internal function linkage rules
• cbuffer declarations
• [HLSL] bitcasts emitted instead of vector conversions in binary operators llvm-project#106253

Resource Binding (#23)

• Document resource binding annotations in language spec #55
• Explicit resource binding for SRV, CBV and samplers #36

Semantics (#25)

• [HLSL] implement SV_GroupThreadId semantic llvm-project#70122
• [HLSL] implement SV_GroupID semantic llvm-project#70120

DXIL Legalization and Lowering (#27)

• Inlining
  • [DXIL] Always inline HLSL functions by default llvm-project#89282
• Scalarization
  • [0009] A proposal for DXIL Function Scalarization #62
  • [0010] Dxil data scalarization proposal #72
  • [DirectX] Enable the Scalarizer pass in the DirectX backend llvm-project#105178
  • Add support for DirectX intrinsics to the scalarizer pass llvm-project#107433
  • Write a pass for Data layout scalarization llvm-project#107920

Intrinsics (#28)

• Intrinsics used by particle_life.hlsl are implemented #29

DXIL Shader Flags (#57)

• [DirectX] Shader Flag Analysis to indicate use of Raw and Structured Buffers llvm-project#112273
• [DirectX] Implement Shader Flags Analysis for TypedUAVLoadAdditionalFormats llvm-project#114557
  Set based on properties of DXIL::Opcode::BufferLoad, if present, in the candidate function - see here
• [DirectX] Run shader flags analysis before DXILOpLowering llvm-project#120119

Resources (#8)

• Structured buffers #88
• CBuffers #41
• Document the plan for how resource attributes map to DXIL and SPIR-V #68
• [HLSL] Document HLSL buffer types in the language spec #56
• Validation for resource element types #74
• Clean up early resource experiments #122

DirectX Container (#9)

• Entry properties for Compute shader in PSV0 part #51
• Introduce DXIL Metadata analysis pass llvm-project#63835