[Bug target/89319] New: PowerPC generates poor code when using attribute((vector_size(32))

[g...@the-meissners.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89319

            Bug ID: 89319
           Summary: PowerPC generates poor code when using
                    attribute((vector_size(32))
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: g...@the-meissners.org
  Target Milestone: ---

Created attachment 45677
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45677&action=edit
Source code to show the problem

I tried out some code using the vector_size(32) attribute on PowerPC, and it
generates poor code.  I expected that it would just generate two loads, two
adds, and two stores, but instead it pushed things to the stack.

See the attached code and asm file.