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llvm-project/libc/test/src/string
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Guillaume Chatelet 1c814c99aa [libc] Improve memcmp latency and codegen 
This is based on ideas from @nafi to:
 - use a branchless version of 'cmp' for 'uint32_t',
 - completely resolve the lexicographic comparison through vector
   operations when wide types are available. We also get rid of byte
   reloads and serializing '__builtin_ctzll'.

I did not include the suggestion to replace comparisons of 'uint16_t'
with two 'uint8_t' as it did not seem to help the codegen. This can
be revisited in sub-sequent patches.

The code been rewritten to reduce nested function calls, making the
job of the inliner easier and preventing harmful code duplication.

Reviewed By: nafi3000

Differential Revision: https://reviews.llvm.org/D148717
2023-06-30 13:00:58 +00:00
..
memory_utils
[libc] Improve memcmp latency and codegen
2023-06-30 13:00:58 +00:00
bcmp_test.cpp
[libc][test] Drastically reduce mem test runtime
2023-05-25 15:05:21 +00:00
bcopy_test.cpp
[libc] Enable custom logging in LibcTest
2023-06-14 13:37:50 +00:00
bzero_test.cpp
[libc][test] Drastically reduce mem test runtime
2023-05-25 15:05:21 +00:00
CMakeLists.txt
[libc] Enable the 'string' unit tests to be hermetic
2023-05-02 18:51:11 -05:00
index_test.cpp
[libc] Correctly add new files
2023-04-11 04:41:14 +00:00
memccpy_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
memchr_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
memcmp_test.cpp
[libc][test] Drastically reduce mem test runtime
2023-05-25 15:05:21 +00:00
memcpy_test.cpp
[libc][test] Drastically reduce mem test runtime
2023-05-25 15:05:21 +00:00
memmem_test.cpp
[libc] Enable custom logging in LibcTest
2023-06-14 13:37:50 +00:00
memmove_test.cpp
[libc] Enable custom logging in LibcTest
2023-06-14 13:37:50 +00:00
mempcpy_test.cpp
[libc] Enable custom logging in LibcTest
2023-06-14 13:37:50 +00:00
memrchr_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
memset_test.cpp
[libc][test] Drastically reduce mem test runtime
2023-05-25 15:05:21 +00:00
rindex_test.cpp
[libc] Correctly add new files
2023-04-11 04:41:14 +00:00
stpcpy_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
stpncpy_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strcasecmp_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strcasestr_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strcat_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strchr_test.cpp
[libc] Move str{,r}chr implementation to headers
2023-04-11 01:16:56 +00:00
strchrnul_test.cpp
[libc] Add strchrnul implementation
2023-04-03 11:08:28 -07:00
StrchrTest.h
[libc] Enable running libc unit tests on AMDGPU
2023-05-04 06:32:52 -05:00
strcmp_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strcoll_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strcpy_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strcspn_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strdup_test.cpp
[libc][NFC] Switch string and errno tests to libc_errno.
2023-03-13 22:22:00 +00:00
strerror_r_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strerror_test.cpp
[libc] Fix integer conversion error in test
2023-03-07 17:49:47 +00:00
strlcat_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strlcpy_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strlen_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strncasecmp_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strncat_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strncmp_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strncpy_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strndup_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strnlen_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strpbrk_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strrchr_test.cpp
[libc] Move str{,r}chr implementation to headers
2023-04-11 01:16:56 +00:00
strsep_test.cpp
[libc] Implement strsep
2023-04-06 17:48:28 +00:00
strsignal_test.cpp
[libc] Make string tests compatible with the Fuchsia build
2023-03-20 10:22:52 -07:00
strspn_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strstr_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strtok_r_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strtok_test.cpp
[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.
2023-02-07 19:45:51 +00:00
strxfrm_test.cpp
[libc] Add strxfrm Implementation
2023-04-07 00:09:22 +00:00