[Bug tree-optimization/66739] New: [6 regression] FAIL: gcc.target/aarch64/subs.c scan-assembler subs\tw[0-9]

["schwab at linux-m68k dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66739

            Bug ID: 66739
           Summary: [6 regression] FAIL: gcc.target/aarch64/subs.c
                    scan-assembler subs\tw[0-9]
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: schwab@linux-m68k.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64-*-*

$ gcc/xgcc -Bgcc/ ../gcc/testsuite/gcc.target/aarch64/subs.c -O2 -S -o subs.s
$ grep sub subs.s
        .file   "subs.c"
        sub     w1, w0, w1
        subs    x1, x0, x1