[Bug target/68753] New: PowerPC: double precision reciprocal estimate missed optimisations

[anton at samba dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68753

            Bug ID: 68753
           Summary: PowerPC: double precision reciprocal 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 36939
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36939&action=edit
Test cases

POWER6 and above should use reciprocal estimate instructions for double
precision. Attached is a set of test cases based on our single precision ones.
Some of them fail.