[SPIR-V] QuadAny/QuadAll Unsupported in SPIR-V

[rnvannatta]

Description
The QuadAny/QuadAll builtins do not work when targeting SPIR-V, reporting a "QuadAny intrinsic function unimplemented" error.

Other builtins, like QuadReadLaneAt work in SPIR-V. And DXC uses a polyfill for QuadAny when targeting DXIL < SM 6_7. I'd also expect DXC to use a polyfill for old SPIR-V versions.

We also target SPIR-V platforms which lack QuadAny support so I'd appreciate if the polyfill worked there too :)

Steps to Reproduce
https://godbolt.org/z/zeK7jv3x5

Actual Behavior
The QuadAny/QuadAll builtins do not work when targeting SPIR-V, reporting a "QuadAny intrinsic function unimplemented" error.

Environment

• DXC version libdxcompiler.so: 1.8(dev;1-11e1318c)
• Host Operating System any

[s-perron]

@cassiebeckley Somehow we missed a SM6.7 feature: https://microsoft.github.io/DirectX-Specs/d3d/HLSL_SM_6_7_QuadAny_QuadAll.html.

Can you take a look at it?

[cassiebeckley]

I'm working on an implementation for this.