[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.