tree cea843b71d4171320b341e430a34754fd4674bde
parent 771aad30276397d6388c147b93c9e298fe30b72b
author Marek Olšák <marek.olsak@amd.com> 1600308382 -0400
committer Marge Bot <eric+marge@anholt.net> 1600950551 +0000

radeonsi: fuse or lower ffma optimally on all chips

LLVM is going to support the legacy instructions soon.

This change switches FMA to MAD for gfx10.

54793 shaders in 33659 tests
Totals:
SGPRS: 2632554 -> 2629570 (-0.11 %)
VGPRS: 1536364 -> 1535312 (-0.07 %)
Spilled SGPRs: 3602 -> 3562 (-1.11 %)
Spilled VGPRs: 44 -> 40 (-9.09 %)
Private memory VGPRs: 256 -> 256 (0.00 %)
Scratch size: 312 -> 308 (-1.28 %) dwords per thread
Code Size: 55422660 -> 55345408 (-0.14 %) bytes
Max Waves: 963983 -> 964200 (0.02 %)

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6756>