Tidy up. Trailing whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189617 91177308-0d34-0410-b5e6-96231b3b80d8
Tidy up. Comment grammar.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189618 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: Improve pattern for isel mul of vector by scalar.

In addition to recognizing when the multiply's second argument is
coming from an explicit VDUPLANE, also look for a plain scalar
f32 reference and reference it via the corresponding vector
lane.

rdar://14870054

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189619 91177308-0d34-0410-b5e6-96231b3b80d8