[X86] Make abi-isel.ll like update_llc_test_checks.py output

- Remove -asm-verbose=0 from every llc command. The tests still pass.
- Reorder the RUN lines to match CHECKs.
- Use -LABEL like update_llc_test_checks.py does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@338927 91177308-0d34-0410-b5e6-96231b3b80d8

Author: rnk