GerbilSoft/zlib-ng
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29 Commits

Author SHA1 Message Date
Cameron Cawley
d7e121e56b Use GCC's may_alias attribute for unaligned memory access 2024-12-24 12:55:44 +01:00
Hans Kristian Rosbach
509f6b5818 Since we long ago make unaligned reads safe (by using memcpy or intrinsics), 
it is time to replace the UNALIGNED_OK checks that have since really only been
used to select the optimal comparison sizes for the arch instead.
 2024-12-21 00:46:48 +01:00
Hans Kristian Rosbach
037ab0fd35 Revert "Since we long ago make unaligned reads safe (by using memcpy or intrinsics)," 
This reverts commit 80fffd72f3.
It was mistakenly pushed to develop instead of going through a PR and the appropriate reviews.
 2024-12-17 23:09:31 +01:00
Hans Kristian Rosbach
80fffd72f3 Since we long ago make unaligned reads safe (by using memcpy or intrinsics), 
it is time to replace the UNALIGNED_OK checks that have since really only been
used to select the optimal comparison sizes for the arch instead.
 2024-12-17 23:02:32 +01:00
Cameron Cawley
c327d18131 Make use of unaligned loads on big endian in insert_string 2024-09-15 16:07:50 +02:00
Hans Kristian Rosbach
ef2f8d528c Remove unused 's' parameter from HASH_CALC macro 2024-02-23 13:34:10 +01:00
Nathan Moinvaziri
a090529ece Remove deflate_state parameter from update_hash functions. 2024-02-23 13:34:10 +01:00
Nathan Moinvaziri
fc63426372 Update copyright years in other source files. 2024-02-07 19:15:56 +01:00
Dimitri Papadopoulos
73bbb54cf6 Discard repeated words 2023-08-07 08:28:16 +02:00
Nathan Moinvaziri
e22195e5bc Don't use unaligned access for memcpy instructions due to GCC 11 assuming it is aligned in certain instances. 2022-08-17 14:41:18 +02:00
Nathan Moinvaziri
363a95fb9b Introduce zmemcpy to use unaligned access for architectures we know support unaligned access, otherwise use memcpy. 2022-02-10 16:10:48 +01:00
Nathan Moinvaziri
5bc87f1581 Use memcpy for unaligned reads. 
Co-authored-by: Matija Skala <mskala@gmx.com>
 2022-01-08 14:33:19 +01:00
Nathan Moinvaziri
f77af71e77 Fixed trailing whitespaces and missing new lines. 2021-09-22 16:00:46 +02:00
Nathan Moinvaziri
5998d5b632 Added update_hash to build hash incrementally. 2021-06-25 20:09:14 +02:00
Nathan Moinvaziri
6948789969 Added rolling hash functions for hash table. 2021-06-25 20:09:14 +02:00
Hans Kristian Rosbach
cf9127a231 Separate MIN_MATCH into STD_MIN_MATCH and WANT_MIN_MATCH 
Rename MAX_MATCH to STD_MAX_MATCH
 2021-06-13 20:55:01 +02:00
Nathan Moinvaziri
020b5be33e Fixed str uint32_t to uint16_t casting warnings in inflate_string_tpl.h 
insert_string_tpl.h(50,26): warning C4244: '=': conversion from 'const uint32_t' to 'Pos', possible loss of data
  insert_string_tpl.h(67,1): warning C4244: 'initializing': conversion from 'const uint32_t' to 'Pos', possible loss of data
 2020-11-02 17:01:58 +01:00
Nathan Moinvaziri
7cffba4dd6 Rename ZLIB_INTERNAL to Z_INTERNAL for consistency. 2020-08-31 12:33:16 +02:00
Hans Kristian Rosbach
e7bb6db09a Replace hash_bits, hash_size and hash_mask with defines. 2020-08-23 09:57:45 +02:00
Hans Kristian Rosbach
0cd1818e86 Remove return value from insert_string, since it is always ignored and 
quick_insert_string is being used instead.
 2020-08-21 09:46:03 +02:00
Hans Kristian Rosbach
5b5677abd3 Now that the check is out of the loop, it is also safe to remove it 
and unconditionally return head.
 2020-08-21 09:46:03 +02:00
Hans Kristian Rosbach
9b6af1519c Minor optimization of insert_string template. 2020-08-21 09:46:03 +02:00
Nathan Moinvaziri
38e5e4b20c Store hash_mask in local variable for insert_string loop. 2020-08-20 21:49:17 +02:00
Nathan Moinvaziri
dd753715a9 Move zero check for insert_string count to fill_window since it is the only place where count is ever passed as zero. 2020-08-20 21:49:17 +02:00
Nathan Moinvaziri
9ee4f8a100 Fixed many possible loss of data warnings where insert_string and quick_insert_string function used on Windows. 2020-08-14 22:20:50 +02:00
Nathan Moinvaziri
7e3d9be44c Change quick_insert_string memory access to be similar to insert_string. 2020-05-30 21:25:18 +02:00
Nathan Moinvaziri
9b7a52352c Remove extra lines between functions and their comments. 2020-05-30 21:25:18 +02:00
Nathan Moinvaziri
0129e88cee Removed TRIGGER_LEVEL byte masking from INSERT_STRING and UPDATE_HASH due to poor performance on levels 6 and 9 especially with optimized versions of UPDATE_HASH. 
From commit d306c75d3b:

.. we hash 4 bytes, instead of 3, for certain levels. This shortens the hash chains, and also improves the quality
of each hash entry.
 2020-04-30 10:01:46 +02:00
Nathan Moinvaziri
69bbb0d823 Standardize insert_string functionality across architectures. Added unaligned conditionally compiled code for insert_string and quick_insert_string. Unify sse42 crc32 assembly between insert_string and quick_insert_string. Modified quick_insert_string to work across architectures. 2020-04-30 10:01:46 +02:00