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Add volatile to prevent asm being optimised out

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-10-10 10:06:02 +01:00
parent b34fe8b88b
commit cb5c9fb0c2
1 changed files with 1 additions and 1 deletions
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2
library/aesce.c
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@ -568,7 +568,7 @@ static inline uint8x16_t poly_mult_reduce(uint8x16x3_t input)
/* use 'asm' as an optimisation barrier to prevent loading MODULO from
* memory. It is for GNUC compatible compilers.
*/
asm ("" : "+w" (r));
asm volatile ("" : "+w" (r));
#endif
uint8x16_t const MODULO = vreinterpretq_u8_u64(vshrq_n_u64(r, 64 - 8));
uint8x16_t h, m, l; /* input high/middle/low 128b */