Revert r206045, "Fix shift by constants for vector."

It broke some builders, at least, i686.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206153 91177308-0d34-0410-b5e6-96231b3b80d8
Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206154 91177308-0d34-0410-b5e6-96231b3b80d8