[Bug target/56313] aarch64 backend not using fmls instruction

[josh.m.conner at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56313

--- Comment #1 from Joshua Conner <josh.m.conner at gmail dot com> 2013-02-14 01:39:55 UTC ---
In case it helps, the pattern for aarch64_vmls<mode> is written as:

  (set (op0)
    (minus (op1)
      (mult (op2)
        (op3))))

Restructuring this to:

  (set (op0)
    (fma (neg (op1))
      (op2)
      (op3)))

Allows the combiner to take advantage of the pattern.