tree 5989155d2971801c766819cbaf853e3a6029bd02
parent de1cc06c1d1c1eeae31aa5cae686ccf24064730f
author steve-lunarg <steve_gh@khasekhemwy.net> 1493777690 -0600
committer steve-lunarg <steve_gh@khasekhemwy.net> 1493840680 -0600

HLSL: implement [unroll] and [loop] attributes

This adds infrastructure suitable for any front end to create SPIR-V loop
control flags.  The only current front end doing so is HLSL.

[unroll] turns into spv::LoopControlUnrollMask
[loop] turns into spv::LoopControlDontUnrollMask
no specification means spv::LoopControlMaskNone