diff options
Diffstat (limited to 'jmemmgr.c')
| -rw-r--r-- | jmemmgr.c | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -95,6 +95,19 @@ round_up_pow2(size_t a, size_t b) #endif #endif +#ifdef WITH_SIMD +#if (ALIGN_SIZE % 16) + #error "ALIGN_SIZE is not a multiple of 16 bytes - required for SIMD instructions." +#endif +#if defined(__AVX2__) && (ALIGN_SIZE % 32) + #error "AVX2 requires 32-byte alignment. ALIGN_SIZE is not a multiple of 32 bytes." +#elif defined(__ARM_NEON) && (ALIGN_SIZE % 32) + /* 32-byte alignment allows us to extract more performance from */ + /* fancy-upsampling algorithms when using NEON. */ + #error "NEON optimizations rely on 32-byte alignment. ALIGN_SIZE is not a multiple of 32 bytes." +#endif +#endif + /* * We allocate objects from "pools", where each pool is gotten with a single * request to jpeg_get_small() or jpeg_get_large(). There is no per-object |