[Bug target/68752] New: PowerPC: vector reciprocal square root estimate missed optimisations

[anton at samba dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68752

            Bug ID: 68752
           Summary: PowerPC: vector reciprocal square root estimate missed
                    optimisations
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: anton at samba dot org
  Target Milestone: ---

Created attachment 36938
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36938&action=edit
Test cases

This test case (based on the existing x86 one) shows places we could be using
vector reciprocal square root estimate instructions but aren't.