[Bug tree-optimization/90579] Huge store forward stall due to vectorizer

2019-06-11 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90579 --- Comment #4 from Richard Biener --- A workaround on your side would be to stick -mprefer-vector-size=128 on the function. Note the actual code seems to have another loop touching r inbetween: for (i=0;i<6;i++) { r[i] = x1*toverp[k+i]*g

[Bug tree-optimization/90579] Huge store forward stall due to vectorizer

2019-06-07 Thread hjl.tools at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90579 --- Comment #3 from H.J. Lu --- (In reply to Florian Weimer from comment #2) > In the actual code (sysdeps/ieee754/dbl-64/branred.c) r is a local variable. > Would it possible to increase its alignment automatically? That's obviously > not possi

[Bug tree-optimization/90579] Huge store forward stall due to vectorizer

2019-06-07 Thread fw at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90579 Florian Weimer changed: What|Removed |Added CC||fw at gcc dot gnu.org See Als

[Bug tree-optimization/90579] Huge store forward stall due to vectorizer

2019-05-23 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90579 Richard Biener changed: What|Removed |Added Keywords||missed-optimization Status|