diff options
Diffstat (limited to 'sql/sql_bitmap.h')
| -rw-r--r-- | sql/sql_bitmap.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sql/sql_bitmap.h b/sql/sql_bitmap.h index 93c5056a8fb..4f1acb60161 100644 --- a/sql/sql_bitmap.h +++ b/sql/sql_bitmap.h @@ -27,6 +27,18 @@ #include <my_bitmap.h> #include <my_bit.h> +/* + Workaround GCC optimizer bug (generating SSE instuctions on unaligned data) +*/ +#if defined (__GNUC__) && defined(__x86_64__) && (__GNUC__ < 6) +#define NEED_GCC_NO_SSE_WORKAROUND +#endif + +#ifdef NEED_GCC_NO_SSE_WORKAROUND +#pragma GCC push_options +#pragma GCC target ("no-sse") +#endif + template <uint width> class Bitmap { uint32 buffer[(width + 31) / 32]; @@ -266,6 +278,11 @@ public: }; }; +#ifdef NEED_GCC_NO_SSE_WORKAROUND +#pragma GCC pop_options +#undef NEED_GCC_NO_SSE_WORKAROUND +#endif + /* An iterator to quickly walk over bits in ulonglong bitmap. */ class Table_map_iterator { |