[X86] Add test cases for multiply by 37, 41, and 73.

These can all be handled with 2 LEAs similar to what we do for 11, 19, 21.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337870 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed