DMD and SIMD Bugs

[Walter Bright]

There have been some complaints about the SIMD bugs in DMD, so I thought I'd 
have a look and see what can be done. I've fixed several issues (for dmd, 
excluding the library and enhancement requests), these are the remainder:

https://issues.dlang.org/buglist.cgi?bug_severity=regression&bug_severity=blocker&bug_severity=critical&bug_severity=major&bug_severity=normal&bug_severity=minor&bug_severity=trivial&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&component=dmd&keywords=simd&keywords_type=allwords&list_id=234152&query_format=advanced

If your bug was filed and was neither fixed nor on that list, please tag with 
the SIMD keyword.

If your bug was not filed, it won't be fixed, so sad, too bad!