https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115675
Bug ID: 115675
Summary: truncv4hiv4qi affect r14-1402-gd8545fb2c71683's
optimization.
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: lin1.hu at intel dot com
Target Milestone: ---
After r15-1678-ge5f8a39941f6f0, truncv4hiv4qi affects dump and interferes with
r14-1402-gd8545fb2c71683's optimization.
When I compile pr108938-3.c with -mavx or -mavx512bw -mavx512vl, GCC doesn't
generate bswap r32. I've discussed this with Hongtao and haven't found an
easier way to do it yet. I think it might be possible to target match the
current form to re-support bswap optimization with option -mavx.
