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10 Commits

Author SHA1 Message Date
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
Elliott Hughes 927fe99692 Reland ifuncs for strcmp and strlen. 
This reverts commit e4788d4c7e,
which undid this change during the Q betas.

Bug: http://b/120989619
Change-Id: Iea589fd0e56426971adf9f7c19c2aedf0d7a7a60
 2019-04-22 18:57:21 +00:00
Haibo Huang e4788d4c7e No ifunc for strcmp and strlen 
This is a workaround to unbreak bank apps

Bug: 120254692
Test: Run broken apps
Change-Id: I47a655e9648a6d5f50856f712d8e1cf2be24b440
 2018-12-12 04:28:29 +00:00
Haibo Huang 4af19611e2 Bionic: Support kryo385 CPU 
Bug: 119564566
Test: build
Change-Id: I557fb6a860b777b7cdb6b97d6946847800a8cec6
 2018-12-05 04:39:15 +00:00
Haibo Huang 01bfd8934e Remove denver from bionic 
Test: bionic unit tests
Bug: 73545680
Change-Id: Ib142bf289ac73a3512ad1f29789ef82027160d78
 2018-12-04 06:38:08 +00:00
Haibo Huang 73ad790ebe [ifunc] Use c implementation to compare cpu variant names 
Did this for fun but turns out it generates better assembly code.

With a C implementation, compiler can expand both the comparison
loop and cpu_variant_names array. Results in a decision tree like
structure. For example the "cortex-a" prefix common in many variants
will only be compared once.

Test: run bionic unit tests.
Test: use debugger to check which variant is used.
Change-Id: Id70e5536f968161f20b18f35d46430457c338f0f
 2018-11-30 07:56:22 +00:00
Haibo Huang f1c8d1a6f9 Use ifunc for ARM32 fortify functions 
Test: compile and run bionic unit tests
Test: make PRODUCT-sdk_phone_arm64-sdk
Change-Id: I614f495ad6053d507446a6a896b9199825325188
 2018-11-28 10:56:21 -08:00
Haibo Huang ea9957a72a Arm32 dynamic function dispatch 
Previous change was reverted in 9690b121e3.
This change added .arch directive to kryo/ to avoid invalid instruction error.

Test: Run bionic unit test.
Test: Use gdb to make sure the right function is selected.
Test: Build previously failed target: make PRODUCT-sdk_phone_arm64-sdk
Change-Id: I14de41851121fc1a0b38c98fda5eb844b6a9695c
 2018-11-26 20:00:55 +00:00
Izabela Orlowska 9690b121e3 Revert "Arm32 dynamic function dispatch" 
This reverts commit ce4ff9c44d.

Reason for revert: broke master in ab/5138164 target sdk_phone_armv7-sdk

Change-Id: Ia4b0c7e6117a37df694509078116963f41d7865e
 2018-11-19 14:14:41 +00:00
Haibo Huang ce4ff9c44d Arm32 dynamic function dispatch 
Test: Run bionic unit test.
Test: Use gdb to make sure the right function is selected.

Change-Id: I34ccd83d472c13993f75672b1aac2b2eae65c499
 2018-11-16 19:50:17 +00:00