[x86] Merge two very similar tests and regenerate FileCheck lines for
them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218945 91177308-0d34-0410-b5e6-96231b3b80d8
[x86] This is a terrible SSE1 test, but we should keep it. I've deleted
two functions that really didn't have any interesting assertions, and
generated more precise tests for one of the others.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218946 91177308-0d34-0410-b5e6-96231b3b80d8
[x86] Cleanup and generate precise FileCheck assertions for a bunch of
SSE tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218947 91177308-0d34-0410-b5e6-96231b3b80d8