On 9/29/23 05:14, Jeff Law wrote:
On 9/28/23 21:49, Vineet Gupta wrote:
On 9/28/23 20:17, Jeff Law wrote:
I can bootstrap & regression test alpha using QEMU user mode
emulation. So we might be able to trigger something that way. It'll
take some time, but might prove fruitful.
That would be awesome. It's not like this this is burning or anything
and one of the things in the long tail of things we need to do in
this area.
Absolutely true. In fact, I doubt this particular quirk is all that
important in the extension removal space. But we've got enough data
to do a bit of an experiment. While it takes a long time to run, it
doesn't require any kind of regular human intervention. Better to
fire it off now while it's still fresh in our minds. If we wait a
week or two I'll have forgotten everything.
Just as a data-point, the SPEC QEMU icount on RISC-V with this patch
seems promising (+ve is better, lesser icount)
Baseline subreg promoted
note preserved %
benchmark workload #
500.perlbench_r 0 1222524143251 1222717055541 -0.02%
1 741422677286 740573609468 0.11%
2 694157786227 693787219643 0.05%
502.gcc_r 0 189519277112 188986824061 0.28% <--
1 224763075520 224225499491 0.24%
2 216802546093 216426186662 0.17%
3 179634122120 179165923074 0.26% <--
4 222757886491 222343753217 0.19%
503.bwaves_r 0 309660270217 309640234863 0.01%
1 488871452301 488838894844 0.01%
2 381243468081 381218065515 0.01%
3 463786236849 463756755469 0.01%
505.mcf_r 0 675010417323 675014630665 0.00%
507.cactuBSSN_r 0 2856874668987 2856874679135 0.00%
508.namd_r 0 1877527849689 1877508676900 0.00%
510.parest_r 0 3479719575579 3479104891751 0.02%
511.povray_r 0 3028749801452 3030037805612 -0.04%
519.lbm_r 0 1172421269180 1172421185445 0.00%
520.omnetpp_r 0 1014838628822 1007680353306 0.71% <--
521.wrf_r 0 3897783090826 3897162379983 0.02%
523.xalancbmk_r 0 1062577057227 1062508198843 0.01%
525.x264_r 0 451836043634 449289002218 0.56% <--
1 1761617424590 1758009904369 0.20% <--
2 1686037465791 1682815274048 0.19% <--
526.blender_r 0 1660559350538 1660534452552 0.00%
527.cam4_r 0 2141572063843 2141254936488 0.01%
531.deepsjeng_r 0 1605692153702 1603021256993 0.17%
538.imagick_r 0 3401602661013 3401602660827 0.00%
541.leela_r 0 1989286081019 1987365526160 0.10%
544.nab_r 0 1537038165879 1528865609530 0.53% <--
548.exchange2_r 0 2050220774922 2048840906692 0.07%
549.fotonik3d_r 0 2231807908394 2231807600916 0.00%
554.roms_r 0 2612969430882 2611529873683 0.06%
557.xz_r 0 367967125022 367760820700 0.06%
1 961163448926 961025548415 0.01%
2 522156857947 521939109911 0.04%
997.specrand_fr 0 413618578 413604068 0.00%
999.specrand_ir 0 413618578 413604068 0.00%
