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This prevents regressions on SNB due to the redundant MOVs lying around in cases where fetch_payload_reg() returns a VGRF (currently only in SIMD32 but soon in pretty much all cases). The MOVs can't be register-coalesced due to their source being a FIXED_GRF, and they can't be copy-propagated either due to the unlit centroid workaround partial writes. They can be copy-propagated just fine into a SEL instruction though. On SNB this prevents the following shader-db regressions (including SIMD32 programs) in combination with the interpolation rework part of this series: total instructions in shared programs: 13996898 -> 14001982 (0.04%) instructions in affected programs: 197461 -> 202545 (2.57%) helped: 0 HURT: 1251 Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> |
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| .. | ||
| blorp | ||
| common | ||
| compiler | ||
| dev | ||
| genxml | ||
| isl | ||
| perf | ||
| tools | ||
| vulkan | ||
| Android.blorp.mk | ||
| Android.common.mk | ||
| Android.compiler.mk | ||
| Android.dev.mk | ||
| Android.genxml.mk | ||
| Android.isl.mk | ||
| Android.mk | ||
| Android.perf.mk | ||
| Android.vulkan.mk | ||
| Makefile.perf.am | ||
| Makefile.sources | ||
| meson.build | ||