liblzma: Create crc_clmul.c.

Both crc32_clmul() and crc64_clmul() are now exported from
crc32_clmul.c as lzma_crc32_clmul() and lzma_crc64_clmul(). This
ensures that is_clmul_supported() (now lzma_is_clmul_supported()) is
not duplicated between crc32_fast.c and crc64_fast.c.

Also, it encapsulates the complexity of the CLMUL implementations into a
single file and reduces the complexity of crc32_fast.c and crc64_fast.c.
Before, CLMUL code was present in crc32_fast.c, crc64_fast.c, and
crc_common.h.

During the conversion, various cleanups were applied to code (thanks to
Lasse Collin) including:

- Require using semicolons with MASK_/L/H/LH macros.
- Variable typing and const handling improvements.
- Improvements to comments.
- Fixes to the pragmas used.
- Removed unneeded variables.
- Whitespace improvements.
- Fixed CRC_USE_GENERIC_FOR_SMALL_INPUTS handling.
- Silenced warnings and removed the need for some #pragmas

1 files changed, 3 insertions, 0 deletions

diff --git a/src/liblzma/check/Makefile.inc b/src/liblzma/check/Makefile.inc
index 1b016356..7780d20d 100644
--- a/src/liblzma/check/Makefile.inc
+++ b/src/liblzma/check/Makefile.inc
@@ -26,6 +26,9 @@ if COND_ASM_X86
 liblzma_la_SOURCES += check/crc32_x86.S
 else
 liblzma_la_SOURCES += check/crc32_fast.c
+if COND_CRC_CLMUL
+liblzma_la_SOURCES += check/crc_clmul.c
+endif
 endif
 endif
 endif