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updated code comments, based on @terrelln review

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This commit is contained in:
Yann Collet 2018-09-13 16:44:04 -07:00
parent d195eec97e
commit 5512400677
2 changed files with 9 additions and 2 deletions
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8
lib/common/compiler.h
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@ -89,7 +89,13 @@
#endif #endif
/* prefetch /* prefetch
* can be disabled, by declaring NO_PREFETCH macro */ * can be disabled, by declaring NO_PREFETCH macro
* All prefetch invocations use a single default locality 2,
* generating instruction prefetcht1,
* which, according to Intel, means "load data into L2 cache".
* This is a good enough "middle ground" for the time being,
* though in theory, it would be better to specialize locality depending on data being prefetched.
* Tests could not determine any sensible difference based on locality value. */
#if defined(NO_PREFETCH) #if defined(NO_PREFETCH)
# define PREFETCH(ptr) (void)(ptr) /* disabled */ # define PREFETCH(ptr) (void)(ptr) /* disabled */
#else #else

3
lib/decompress/zstd_decompress.c
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@ -56,7 +56,8 @@
* Dependencies * Dependencies
*********************************************************/ *********************************************************/
#include <string.h> /* memcpy, memmove, memset */ #include <string.h> /* memcpy, memmove, memset */
#include "cpu.h" /* prefetch */ #include "compiler.h" /* prefetch */
#include "cpu.h" /* bmi2 */
#include "mem.h" /* low level memory routines */ #include "mem.h" /* low level memory routines */
#define FSE_STATIC_LINKING_ONLY #define FSE_STATIC_LINKING_ONLY
#include "fse.h" #include "fse.h"