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Disable vectorization 

Disable vectorization for now.  To correctly use them, we should
use posix_memalign() to allocate them.  Otherwise, can cause
misaligned access.

https://bugs.chromium.org/p/chromium/issues/detail?id=860184
This commit is contained in:
Behdad Esfahbod 2018-07-05 14:04:13 +04:30
parent 18a06f8a66
commit 1ebaa090d8
1 changed files with 12 additions and 0 deletions
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12
src/hb-private.hh
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@ -1107,6 +1107,18 @@ struct HbOpXor
/* Compiler-assisted vectorization. */ /* Compiler-assisted vectorization. */
/*
* Disable vectorization for now. To correctly use them, we should
* use posix_memalign() to allocate them. Otherwise, can cause
* misaligned access.
*
* https://bugs.chromium.org/p/chromium/issues/detail?id=860184
*/
#if !defined(HB_VECTOR_SIZE)
# define HB_VECTOR_SIZE 0
#endif
/* The `vector_size' attribute was introduced in gcc 3.1. */ /* The `vector_size' attribute was introduced in gcc 3.1. */
#if !defined(HB_VECTOR_SIZE) #if !defined(HB_VECTOR_SIZE)
# if defined( __GNUC__ ) && ( __GNUC__ >= 4 ) # if defined( __GNUC__ ) && ( __GNUC__ >= 4 )