https://bugs.llvm.org/show_bug.cgi?id=35003

            Bug ID: 35003
           Summary: [X86] Help update_llc_test_checks.py recognise
                    retl/retq to reduce CHECK duplication
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedb...@nondot.org
          Reporter: llvm-...@redking.me.uk
                CC: craig.top...@gmail.com, llvm-bugs@lists.llvm.org,
                    spatel+l...@rotateright.com

We have a lot of i686 and x86_64 tests that generate identical codegen apart
from the retl/retq return op.

It'd avoid a lot of code duplication if we replaced this with a ret{lq} pattern
match.

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