[Bug target/78007] New: Important loop from 482.sphinx3 is not vectorized

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78007

            Bug ID: 78007
           Summary: Important loop from 482.sphinx3  is not vectorized
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ysrumyan at gmail dot com
  Target Milestone: ---

The issue is related to missing support for __builtin_bswap32:

t1.c:9:3: note: function is not vectorizable.
t1.c:9:3: note: not vectorized: relevant stmt not supported: _13 =
__builtin_bswap32 (load_dst_8);

Simple reproducer is attached.