WIP: VK_KHR_shader_float_controls implementation on ANV
First three versions of this branch were sent for review to the mailing list. In order to avoid flooding the list with more emails, I create this MR to continue the review process here.
Reminder: this patch series relies on
VK_KHR_shader_float16_int8 patch series which is currently under review. For that reason, I mark this Merge Request as Work In Progress.