Re: [REPORT] Nightly Performance Tests - Sunday, September 13, 2020

[Philippe Mathieu-Daudé]

Hi Ahmed,

On 9/14/20 12:07 AM, Ahmed Karaman wrote:
> Host CPU         : Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
> Host Memory      : 15.49 GB
> 
> Start Time (UTC) : 2020-09-13 21:35:01
> End Time (UTC)   : 2020-09-13 22:07:44
> Execution Time   : 0:32:42.230467
> 
> Status           : SUCCESS
> 
> Note:
> Changes denoted by '-----' are less than 0.01%.
> 
> --------------------------------------------------------
>             SUMMARY REPORT - COMMIT f00f57f3
> --------------------------------------------------------

(Maybe this was already commented earlier but I missed it).

What change had a so significant impact on the m68k target?
At a glance I only see mostly changes in softfloat:

$ git log --oneline v5.1.0..f00f57f3 tcg target/m68k fpu
fe4b0b5bfa9 tcg: Implement 256-bit dup for tcg_gen_gvec_dup_mem
6a17646176e tcg: Eliminate one store for in-place 128-bit dup_mem
e7e8f33fb60 tcg: Fix tcg gen for vectorized absolute value
5ebf5f4be66 softfloat: Define misc operations for bfloat16
34f0c0a98a5 softfloat: Define convert operations for bfloat16
8282310d853 softfloat: Define operations for bfloat16
0d93d8ec632 softfloat: Add fp16 and uint8/int8 conversion functions
fbcc38e4cb1 softfloat: add xtensa specialization for pickNaNMulAdd
913602e3ffe softfloat: pass float_status pointer to pickNaN
cc43c692511 softfloat: make NO_SIGNALING_NANS runtime property
73ebe95e8e5 target/ppc: add vmulld to INDEX_op_mul_vec case

> --------------------------------------------------------
> --------------------------------------------------------
> Test Program: matmult_double
> --------------------------------------------------------
> Target              Instructions      Latest      v5.1.0
> ----------  --------------------  ----------  ----------
> aarch64            1 412 412 599       -----     +0.311%
> alpha              3 233 957 639       -----     +7.472%
> arm                8 545 302 995       -----      +1.09%
> hppa               3 483 527 330       -----     +4.466%
> m68k               3 919 110 506       -----    +18.433%
> mips               2 344 641 840       -----     +4.085%
> mipsel             3 329 912 425       -----     +5.177%
> mips64             2 359 024 910       -----     +4.075%
> mips64el           3 343 650 686       -----     +5.166%
> ppc                3 209 505 701       -----     +3.248%
> ppc64              3 287 495 266       -----     +3.173%
> ppc64le            3 287 135 580       -----     +3.171%
> riscv64            1 221 617 903       -----     +0.278%
> s390x              2 874 160 417       -----     +5.826%
> sh4                3 544 094 841       -----      +6.42%
> sparc64            3 426 094 848       -----     +7.138%
> x86_64             1 249 076 697       -----     +0.335%
> --------------------------------------------------------
...
> --------------------------------------------------------
> Test Program: qsort_double
> --------------------------------------------------------
> Target              Instructions      Latest      v5.1.0
> ----------  --------------------  ----------  ----------
> aarch64            2 709 839 947       -----     +2.423%
> alpha              1 969 432 086       -----     +3.679%
> arm                8 323 168 267       -----     +2.589%
> hppa               3 188 316 726       -----       +2.9%
> m68k               4 953 947 225       -----    +15.153%
> mips               2 123 789 120       -----     +3.049%
> mipsel             2 124 235 492       -----     +3.049%
> mips64             1 999 025 951       -----     +3.404%
> mips64el           1 996 433 190       -----     +3.409%
> ppc                2 819 299 843       -----     +5.436%
> ppc64              2 768 177 037       -----     +5.512%
> ppc64le            2 724 766 044       -----     +5.602%
> riscv64            1 638 324 190       -----     +4.021%
> s390x              2 519 117 806       -----     +3.364%
> sh4                2 595 696 102       -----       +3.0%
> sparc64            3 988 892 763       -----     +2.744%
> x86_64             2 033 624 062       -----     +3.242%
> --------------------------------------------------------