[LLVMdev] SelectionDAG scalarizes vector operations.
clattner at apple.com
Wed Feb 8 15:04:47 PST 2012
On Feb 8, 2012, at 12:42 PM, David A. Greene wrote:
> Chris Lattner <clattner at apple.com> writes:
>> Would it make sense to start something like a
>> lib/Target/README-Vectors.txt file with a collection of small examples
>> of pessimizations? We've successfully used text files like this to
>> track "laundry lists" like this. High priority problems (e.g. the
>> sorts that Duncan is pointing out) makes sense to track in bugzilla,
>> of course.
> Sounds fine to me, but is there any reason *not* to file bugs other than
> increasing the number of bugs in Bugzilla? Bugzilla is always where I
> go first to see if a problem has already been identified.
Personally, I think that bugzilla is overkill (i.e. the wrong answer) for a long tail of random micro-optimizations. Much of the stuff in X86/README has been in there for years. Having it in bugzilla would just clutter things up.
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