[Bug tree-optimization/63798] New: [5.0 regression] FAIL: gcc.target/powerpc/ppc-fmadd-1.c scan-assembler-not f(add|sub|mul|neg)

[schwab@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63798

            Bug ID: 63798
           Summary: [5.0 regression] FAIL:
                    gcc.target/powerpc/ppc-fmadd-1.c scan-assembler-not
                    f(add|sub|mul|neg)
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: schwab@linux-m68k.org
                CC: rguenther at suse dot de
            Target: powerpc*-*-*

$ gcc/xgcc -Bgcc/ ../gcc/gcc/testsuite/gcc.target/powerpc/ppc-fmadd-1.c
-ffast-math -O2 -ffat-lto-objects -S -m32 -o ppc-fmadd-1.s && grep -Ec
"f(add|sub|mul|neg)" ppc-fmadd-1.s
4

f619ecaed41d1487091098a0f4fdf4d6ed1fa379 is the first bad commit
commit f619ecaed41d1487091098a0f4fdf4d6ed1fa379
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Mon Oct 27 11:30:23 2014 +0000

    2014-10-27  Richard Biener  <rguenther@suse.de>

        * tree-ssa-forwprop.c: Include tree-cfgcleanup.h and tree-into-ssa.h.
        (lattice): New global.
        (fwprop_ssa_val): New function.
        (fold_all_stmts): Likewise.
        (pass_forwprop::execute): Finally fold all stmts.