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We need to emit a jump over the else body when constructing the IR, even if the else body appears empty in NIR, because instructions could be added when going out-of-SSA. This optimization should instead happen post-RA, but doing so is nontrivial and the cycle count regression is minimal, so punting on this for now. total instructions in shared programs: 2728364 -> 2731495 (0.11%) instructions in affected programs: 580462 -> 583593 (0.54%) helped: 0 HURT: 1272 HURT stats (abs) min: 1.0 max: 17.0 x̄: 2.46 x̃: 2 HURT stats (rel) min: 0.09% max: 22.22% x̄: 0.88% x̃: 0.59% 95% mean confidence interval for instructions value: 2.37 2.56 95% mean confidence interval for instructions %-change: 0.80% 0.97% Instructions are HURT. total cycles in shared programs: 140628.52 -> 140631.50 (<.01%) cycles in affected programs: 474.45 -> 477.44 (0.63%) helped: 0 HURT: 116 HURT stats (abs) min: 0.015625 max: 0.0625 x̄: 0.03 x̃: 0 HURT stats (rel) min: 0.21% max: 9.09% x̄: 1.16% x̃: 0.39% 95% mean confidence interval for cycles value: 0.02 0.03 95% mean confidence interval for cycles %-change: 0.88% 1.43% Cycles are HURT. total cvt in shared programs: 14816.20 -> 14865.12 (0.33%) cvt in affected programs: 4954.31 -> 5003.23 (0.99%) helped: 0 HURT: 1272 HURT stats (abs) min: 0.015625 max: 0.265625 x̄: 0.04 x̃: 0 HURT stats (rel) min: 0.16% max: 28.57% x̄: 1.88% x̃: 1.17% 95% mean confidence interval for cvt value: 0.04 0.04 95% mean confidence interval for cvt %-change: 1.74% 2.02% Cvt are HURT. total quadwords in shared programs: 1476536 -> 1478512 (0.13%) quadwords in affected programs: 54496 -> 56472 (3.63%) helped: 0 HURT: 247 HURT stats (abs) min: 8.0 max: 8.0 x̄: 8.00 x̃: 8 HURT stats (rel) min: 0.93% max: 20.00% x̄: 5.78% x̃: 4.17% 95% mean confidence interval for quadwords value: 8.00 8.00 95% mean confidence interval for quadwords %-change: 5.21% 6.34% Quadwords are HURT. Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17794> |
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| amd | ||
| android_stub | ||
| asahi | ||
| broadcom | ||
| c11 | ||
| compiler | ||
| drm-shim | ||
| egl | ||
| etnaviv | ||
| freedreno | ||
| gallium | ||
| gbm | ||
| getopt | ||
| glx | ||
| gtest | ||
| hgl | ||
| imagination | ||
| imgui | ||
| intel | ||
| loader | ||
| mapi | ||
| mesa | ||
| microsoft | ||
| nouveau | ||
| panfrost | ||
| tool | ||
| util | ||
| virtio | ||
| vulkan | ||
| meson.build | ||