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authorRĂ©mi Verschelde <rverschelde@gmail.com>2019-01-04 10:13:15 +0100
committerGitHub <noreply@github.com>2019-01-04 10:13:15 +0100
commitbdbcf29246bad902e94c3a5fb1fd1abb06aeb2ae (patch)
treec85c2c9a80d04e338cf39d0fed3fdba2d0291b29 /thirdparty/zstd/common/compiler.h
parentb1e3215f3a316cfaf518747f7dafba4cc0d8d291 (diff)
parente64391f47bf95ab4cdb65683623979ee6790836e (diff)
Merge pull request #24754 from guilhermefelipecgs/fix_17374
Update zstd to 1.3.8
Diffstat (limited to 'thirdparty/zstd/common/compiler.h')
-rw-r--r--thirdparty/zstd/common/compiler.h49
1 files changed, 39 insertions, 10 deletions
diff --git a/thirdparty/zstd/common/compiler.h b/thirdparty/zstd/common/compiler.h
index e90a3bcde3..7f561282ca 100644
--- a/thirdparty/zstd/common/compiler.h
+++ b/thirdparty/zstd/common/compiler.h
@@ -15,6 +15,8 @@
* Compiler specifics
*********************************************************/
/* force inlining */
+
+#if !defined(ZSTD_NO_INLINE)
#if defined (__GNUC__) || defined(__cplusplus) || defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */
# define INLINE_KEYWORD inline
#else
@@ -29,6 +31,13 @@
# define FORCE_INLINE_ATTR
#endif
+#else
+
+#define INLINE_KEYWORD
+#define FORCE_INLINE_ATTR
+
+#endif
+
/**
* FORCE_INLINE_TEMPLATE is used to define C "templates", which take constant
* parameters. They must be inlined for the compiler to elimininate the constant
@@ -77,9 +86,9 @@
* Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default.
*/
#ifndef DYNAMIC_BMI2
- #if (defined(__clang__) && __has_attribute(__target__)) \
+ #if ((defined(__clang__) && __has_attribute(__target__)) \
|| (defined(__GNUC__) \
- && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) \
+ && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \
&& (defined(__x86_64__) || defined(_M_X86)) \
&& !defined(__BMI2__)
# define DYNAMIC_BMI2 1
@@ -88,15 +97,35 @@
#endif
#endif
-/* prefetch */
-#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_I86)) /* _mm_prefetch() is not defined outside of x86/x64 */
-# include <mmintrin.h> /* https://msdn.microsoft.com/fr-fr/library/84szxsww(v=vs.90).aspx */
-# define PREFETCH(ptr) _mm_prefetch((const char*)ptr, _MM_HINT_T0)
-#elif defined(__GNUC__)
-# define PREFETCH(ptr) __builtin_prefetch(ptr, 0, 0)
+/* prefetch
+ * can be disabled, by declaring NO_PREFETCH build macro */
+#if defined(NO_PREFETCH)
+# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */
+# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */
#else
-# define PREFETCH(ptr) /* disabled */
-#endif
+# if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_I86)) /* _mm_prefetch() is not defined outside of x86/x64 */
+# include <mmintrin.h> /* https://msdn.microsoft.com/fr-fr/library/84szxsww(v=vs.90).aspx */
+# define PREFETCH_L1(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T0)
+# define PREFETCH_L2(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T1)
+# elif defined(__GNUC__) && ( (__GNUC__ >= 4) || ( (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1) ) )
+# define PREFETCH_L1(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 3 /* locality */)
+# define PREFETCH_L2(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 2 /* locality */)
+# else
+# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */
+# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */
+# endif
+#endif /* NO_PREFETCH */
+
+#define CACHELINE_SIZE 64
+
+#define PREFETCH_AREA(p, s) { \
+ const char* const _ptr = (const char*)(p); \
+ size_t const _size = (size_t)(s); \
+ size_t _pos; \
+ for (_pos=0; _pos<_size; _pos+=CACHELINE_SIZE) { \
+ PREFETCH_L2(_ptr + _pos); \
+ } \
+}
/* disable warnings */
#ifdef _MSC_VER /* Visual Studio */