[Bug target/102591] Failure to optimize search for value in vector-sized area to use SIMD

[gabravier at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102591

--- Comment #2 from Gabriel Ravier  ---
memcpy can fail on unaligned memory ??? I used it specifically to avoid this
problem !

(also, LLVM's code, I am pretty sure, does not have any issue with alignment,
as it uses either AVX instructions which care not for it, or specifically does
a movdqu (i.e. unaligned load) of the memory)

[Bug target/102591] Failure to optimize search for value in vector-sized area to use SIMD

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102591

Richard Biener  changed:

   What|Removed |Added

 CC||rguenth at gcc dot gnu.org
 Ever confirmed|0   |1
   Last reconfirmed||2021-10-05
 Status|UNCONFIRMED |WAITING

--- Comment #1 from Richard Biener  ---
Hmm, but

__builtin_memcpy(, tpl, 16);

could trap since 'tpl' is not aligned to 16 bytes?  So LLVM creates wrong code
here?