On 08/31/2016 11:36 PM, Rajalakshmi Srinivasaraghavan wrote:
+#if defined(HOST_WORDS_BIGENDIAN) +#define VEXTRACT(suffix, element) \ + void helper_vextract##suffix(ppc_avr_t *r, ppc_avr_t *b, uint32_t index) \ + { \ + r->u64[0] = r->u64[1] = 0; \ + memmove(&r->u8[8 - sizeof(r->element)], &b->u8[index], \ + sizeof(r->element[0])); \
Again, you must consider R == B. I made this same comment wrt v2, when you still had a memcpy here.
This is trivial: (1) Use memmove to set first sizeof(r->element[0]) bytes, (2) Use memset 0 to clean last (16 - sizeof(r->element[0]) bytes. You have some test cases for these insns, don't you? r~