[Bug tree-optimization/58039] -ftree-vectorizer makes a loop crash on a non-aligned memory

2016-08-14 Thread pinskia at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58039 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|---

[Bug tree-optimization/58039] -ftree-vectorizer makes a loop crash on a non-aligned memory

2013-08-12 Thread bar at mariadb dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58039 --- Comment #4 from Alexander Barkov bar at mariadb dot org --- Mikael, thanks for your comment on this. (In reply to Mikael Pettersson from comment #3) Your code performs mis-aligned uint16_t stores, which x86 allows. Right, this is done for

[Bug tree-optimization/58039] -ftree-vectorizer makes a loop crash on a non-aligned memory

2013-08-12 Thread mikpe at it dot uu.se
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58039 --- Comment #5 from Mikael Pettersson mikpe at it dot uu.se --- (In reply to Alexander Barkov from comment #4) The vectorizer turns those into larger and still mis-aligned `movdqa' stores, which x86 does not allow, hence the SEGV. Can you

[Bug tree-optimization/58039] -ftree-vectorizer makes a loop crash on a non-aligned memory

2013-08-07 Thread mikpe at it dot uu.se
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58039 --- Comment #3 from Mikael Pettersson mikpe at it dot uu.se --- Your code performs mis-aligned uint16_t stores, which x86 allows. The vectorizer turns those into larger and still mis-aligned `movdqa' stores, which x86 does not allow, hence the

[Bug tree-optimization/58039] -ftree-vectorizer makes a loop crash on a non-aligned memory

2013-08-06 Thread bar at mariadb dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58039 --- Comment #2 from Alexander Barkov bar at mariadb dot org --- Any updates? Thanks.