[Bug tree-optimization/68961] New: Test case pr60203.c fails since r231674

["seurer at linux dot vnet.ibm.com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68961

            Bug ID: 68961
           Summary: Test case pr60203.c fails since r231674
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at linux dot vnet.ibm.com
  Target Milestone: ---

PASS: gcc.target/powerpc/pr60203.c (test for excess errors)
PASS: gcc.target/powerpc/pr60203.c scan-assembler-not stfd
FAIL: gcc.target/powerpc/pr60203.c scan-assembler-not lfd
PASS: gcc.target/powerpc/pr60203.c scan-assembler-not lxsdx
PASS: gcc.target/powerpc/pr60203.c scan-assembler-not stxsdx
PASS: gcc.target/powerpc/pr60203.c scan-assembler-not mfvsrd
PASS: gcc.target/powerpc/pr60203.c scan-assembler-not mtvsrd

There are now two lfds (which trigger the error above) and lots of other ops in
the generated code

pack:
        xxpermdi 0,2,1,0
        addi 9,1,-16
        xxpermdi 0,0,0,2
        stxvd2x 0,0,9
        lfd 1,-16(1)
        lfd 2,-8(1)
        blr

while previously there was just

pack:
        blr

Compiled with  -mcpu=power8 -O3.