Follows aco changes, there shouldn't be any loop header phis that are
dead code (as nir_opt_dce ensure that)
Signed-off-by: Mary Guillemard <mary@mary.zone>
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
Trying to spill/fill a temp on the fly has pathologically bad performance in bad
cases, reserving a scratch reg is much more well-behaved. Fixes a fragment
shader timeout in dEQP-VK.graphicsfuzz.spv-stable-maze-flatten-copy-composite
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
we can't stomp over srcs[], where we allocated our space for sources. unclear
how this worked before but it definitely breaks once you have a phi with 7
sources.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
Beneficial so we can fuse the comparison.
total instructions in shared programs: 2188179 -> 2185535 (-0.12%)
instructions in affected programs: 392512 -> 389868 (-0.67%)
helped: 894
HURT: 9
Instructions are helped.
total alu in shared programs: 1706063 -> 1703445 (-0.15%)
alu in affected programs: 275063 -> 272445 (-0.95%)
helped: 880
HURT: 9
Alu are helped.
total fscib in shared programs: 1702385 -> 1699743 (-0.16%)
fscib in affected programs: 276199 -> 273557 (-0.96%)
helped: 894
HURT: 9
Fscib are helped.
total ic in shared programs: 462494 -> 462490 (<.01%)
ic in affected programs: 124 -> 120 (-3.23%)
helped: 1
HURT: 0
total bytes in shared programs: 14476964 -> 14464512 (-0.09%)
bytes in affected programs: 2870824 -> 2858372 (-0.43%)
helped: 888
HURT: 155
Bytes are helped.
total regs in shared programs: 662444 -> 662461 (<.01%)
regs in affected programs: 1025 -> 1042 (1.66%)
helped: 14
HURT: 12
Inconclusive result (value mean confidence interval includes 0).
total uniforms in shared programs: 1638301 -> 1638374 (<.01%)
uniforms in affected programs: 17778 -> 17851 (0.41%)
helped: 22
HURT: 54
Uniforms are HURT.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
It can't be reordered globally, since its value is control-flow dependent.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
There seems to be a hardware issue where fragment shaders with side effects get
skipped if depth testing with NEVER. Add a workaround for this case where we
discard programmatically instead.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29179>
This removes the need for drivers to handle both versions. The base will
get added once in nir_lower_system_values when converting from deref to
intrinsic and will be replaced by a zero for users not supporting it.
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26800>
With the exception of some variants for framebuffer fetch (to be addressed in a
follow up MR, this is big enough as it is) -- this switches us to a shader
precompile path for VS & FS. VS prologs let us implement vertex buffer fetch
with dynamic formats, FS prologs let us implement misc emulation like API sample
masking and cull distance, while FS epilogs handle blending and tilebuffer
stores. This should cut down shader recompile jank significantly in the GL
driver. It also prepares us with most of what we need for big ticket Vulkan
extensions like ESO, GPL, and EDS3.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28483>
translate export/load_exported instructions into moves to/from the requested
GPRs at shader part boundaries, with coalescing in RA for perf.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28483>
