| OLD | NEW |
|---|
| 1 Name: zlib | 1 Name: zlib |
| 2 URL: http://zlib.net/ | 2 URL: http://zlib.net/ |
| 3 Version: 1.2.5 | 3 Version: 1.2.5 |
| 4 Security Critical: yes | 4 Security Critical: yes |
| 5 License: Custom license | 5 License: Custom license |
| 6 License Android Compatible: yes | 6 License Android Compatible: yes |
| 7 | 7 |
| 8 Description: | 8 Description: |
| 9 General purpose compression library | 9 General purpose compression library |
| 10 | 10 |
| 11 Local Modifications: | 11 Local Modifications: |
| 12 A few minor changes, all marked with "Google": | 12 A few minor changes, all marked with "Google": |
| 13 - Added #ifdefs to avoid compile warnings when NO_GZCOMPRESS is defined. | 13 - Added #ifdefs to avoid compile warnings when NO_GZCOMPRESS is defined. |
| 14 - Removed use of strerror for WinCE in gzio.c. | 14 - Removed use of strerror for WinCE in gzio.c. |
| 15 - Added 'int z_errno' global for WinCE, to which 'errno' is defined in zutil.h. | 15 - Added 'int z_errno' global for WinCE, to which 'errno' is defined in zutil.h. |
| 16 - Added 'mozzconf.h' to mangle the function names. | 16 - Added 'mozzconf.h' to mangle the function names. |
| 17 - Added logic in zlib.h to undef our earlier mangles when defaulting to 64 bit o
ffset versions of API. | 17 - Added logic in zlib.h to undef our earlier mangles when defaulting to 64 bit o
ffset versions of API. |
| 18 The 'google.patch' file represents our changes from the original zlib-1.2.5. | 18 The 'google.patch' file represents our changes from the original zlib-1.2.5. |
| 19 | 19 |
| 20 A more significant change to support mixed-source data compression. See | 20 A more significant change to support mixed-source data compression. See |
| 21 crbug.com/139744 and mixed-source.patch. | 21 crbug.com/139744 and mixed-source.patch. |
| 22 |
| 23 Integrated Intel SIMD optimisations from: https://github.com/jtkukunas/zlib/ |
| 24 and modified to accomodate the older version and existing changes in tree. |
| 25 |
| 26 This introduces new files: simd_stub.c, crc_folding.c, fill_window_sse.c and |
| 27 x86.[ch]. All but the latter are built into a static library to allow the |
| 28 compiler to use the desired instructions only when valid. The latter version is |
| 29 only built on x86 (32-bit and 64-bit) systems with it's functionality stubbed |
| 30 on the others. |
| 31 |
| 32 Other changes to accomodate: |
| 33 - fill_window() implementation calls into _sse() variant when supported and the |
| 34 original implementation renamed to _c() |
| 35 - read_buf was moved from local to ZLIB_INTERNAL for fill_window_sse.c to use |
| 36 - INSERT_STRING macro was made a function, insert_string() and an implementation
using CRC instruction added |
| 37 - some crc funcionality moved into crc32.c |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 552123005:
Integrate SIMD optimisations for zlib (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master