| c54ca40aef48009e7b0e5b2b3069aad62ffd3453 |
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13-Dec-2013 |
Elliott Hughes <enh@google.com> |
Clean up some ARMv4/ARMv5 cruft.
Change-Id: I29e836fea4b53901e29f96c6888869c35f6726be
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| 9ad2a73ed65d39c3a638ff9bd2d73250b41212c6 |
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15-Jul-2013 |
Christopher Ferris <cferris@google.com> |
Fix assembler errors in generic arm strlen.c.
Tested using a static version of the strlen libc_test program
on a nexus7 that uses the generic code.
Merge from internal master.
(cherry-picked from d8d10a8994472e40d19301b7087806630877b4d5)
Change-Id: I88f7dc01dc5b5c3ac2d5580d92153bc1bc36c564
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| 0aa9b52efa75b4c8bbdc12845434e25e457ea57b |
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10-Jul-2013 |
Christopher Ferris <cferris@google.com> |
Add new optimized strlen for arm.
This optimized version is primarily targeted at cortex-a15.
Tested on all nexus devices using the system/extras/libc_test strlen test.
Tested alignments from 1 to 32 that are powers of 2.
Tested that strlen does not cross page boundaries at all alignments.
Speed improvements listed below:
cortex-a15
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~250% improvement.
cortex-a9
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~85% improvement.
krait
- Sizes >= 32 bytes, ~95% improvement.
- Sizes >= 1024 bytes, ~160% improvement.
Merge from internal master.
(cherry-picked from 2fc071797743b88a9a47427d46baed7c7b24f4d2)
Change-Id: I1ceceb4e745fd68e9d946f96d1d42e0cdaff6ccf
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| d8d10a8994472e40d19301b7087806630877b4d5 |
|
15-Jul-2013 |
Christopher Ferris <cferris@google.com> |
Fix assembler errors in generic arm strlen.c.
Tested using a static version of the strlen libc_test program
on a nexus7 that uses the generic code.
Change-Id: If04d15dcb6c0b18f27f2fefadca5510ed49016c5
|
| 2fc071797743b88a9a47427d46baed7c7b24f4d2 |
|
10-Jul-2013 |
Christopher Ferris <cferris@google.com> |
Add new optimized strlen for arm.
This optimized version is primarily targeted at cortex-a15.
Tested on all nexus devices using the system/extras/libc_test strlen test.
Tested alignments from 1 to 32 that are powers of 2.
Tested that strlen does not cross page boundaries at all alignments.
Speed improvements listed below:
cortex-a15
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~250% improvement.
cortex-a9
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~85% improvement.
krait
- Sizes >= 32 bytes, ~95% improvement.
- Sizes >= 1024 bytes, ~160% improvement.
Change-Id: I361b1a36ed89ab991f2a8f0abbf0d7416d39c8f5
|