[Bug tree-optimization/68417] [6 Regression] Missed vectorization opportunity when setting struct field

[vekumar at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68417

--- Comment #4 from vekumar at gcc dot gnu.org ---
Older trunk showed (gcc version 6.0.0 20151202 (experimental) (GCC))
iftmp.1_19 = p1_36->y;
tree could trap...

Today's trunk (gcc version 6.0.0 20151209)
Applying if-conversion
new phi replacement stmt
iftmp.1_6 = m1_16 >= m2_18 ? iftmp.1_19 : iftmp.1_20;
Removing basic block 4
basic block 4, loop depth 1