[Bug target/52137] New: bdver2 scheduler needs to be added to bdver1 insn reservations

[qneill at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52137

             Bug #: 52137
           Summary: bdver2 scheduler needs to be added to bdver1 insn
                    reservations
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: target
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: qne...@gcc.gnu.org


Created attachment 26585
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26585
Add bdver2 to list of cpu attributes for bdver1.md insn reservations

The bdver2 scheduler lacks insn reservation conditions for cpu attributes in
the bdver1.md model.  The resulting generated code regresses on bdver2 hardware
for SPEC and polyhedron.

The attached patch recovers most of this performance regression.