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platform_bionic/libc/arch-arm/cortex-a9/bionic
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Jake Weinstein bff53b2617 libc: import ARM strcmp from newlib 
* Current version is also based on newlib, but an older revision

* The Krait and A9 specific changes no longer seem relevant, so
  let's use A15 directly.

Tested on OnePlus 3 (MSM8996):

Before (Krait strcmp):
                                       iterations      ns/op
BM_string_strcmp/8                          1000k         24    0.322 GiB/s
BM_string_strcmp/64                           20M        123    0.519 GiB/s
BM_string_strcmp/512                           2M        920    0.556 GiB/s
BM_string_strcmp/1024                       1000k       1818    0.563 GiB/s
BM_string_strcmp/8Ki                         200k      14405    0.569 GiB/s
BM_string_strcmp/16Ki                        100k      28762    0.570 GiB/s
BM_string_strcmp/32Ki                         50k      57526    0.570 GiB/s
BM_string_strcmp/64Ki                         10k     114959    0.570 GiB/s

After:
                                       iterations      ns/op
BM_string_strcmp/8                          1000k         28    0.284 GiB/s
BM_string_strcmp/64                           20M        107    0.596 GiB/s
BM_string_strcmp/512                           2M        800    0.639 GiB/s
BM_string_strcmp/1024                       1000k       1579    0.649 GiB/s
BM_string_strcmp/8Ki                         200k      12469    0.657 GiB/s
BM_string_strcmp/16Ki                        100k      24931    0.657 GiB/s
BM_string_strcmp/32Ki                         50k      49843    0.657 GiB/s
BM_string_strcmp/64Ki                         20k      99635    0.658 GiB/s

Test: bionic-benchmarks BM_string_memcmp
Change-Id: Icb3bfb0a381bcc1e10885ca5e9547842c3f620d7
2019-05-16 04:37:26 +00:00
..
__strcat_chk.S Use ifunc for ARM32 fortify functions 2018-11-28 10:56:21 -08:00
__strcpy_chk.S Use ifunc for ARM32 fortify functions 2018-11-28 10:56:21 -08:00
memcpy.S Arm32 dynamic function dispatch 2018-11-26 20:00:55 +00:00
memcpy_base.S Arm32 dynamic function dispatch 2018-11-26 20:00:55 +00:00
memset.S Arm32 dynamic function dispatch 2018-11-26 20:00:55 +00:00
stpcpy.S Add stpcpy assembler version. 2014-09-30 19:23:26 -07:00
strcat.S Arm32 dynamic function dispatch 2018-11-26 20:00:55 +00:00
strcpy.S Add stpcpy assembler version. 2014-09-30 19:23:26 -07:00
string_copy.S Arm32 dynamic function dispatch 2018-11-26 20:00:55 +00:00
strlen.S Arm32 dynamic function dispatch 2018-11-26 20:00:55 +00:00