This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [PATCH] Speed up copyprop (part of PR26830)


Diego Novillo wrote:
On 03/29/06 06:31, Paolo Bonzini wrote:

It may be possible to do further improvements (building in fact a
union-find algorithm into copyprop), but it seems worthless for now.


Care to elaborate?  I have been wanting to overhaul copy-prop for some
time now.

My original plans were to use cached_last_copy_of much more than now, updating it in get_last_copy_of and using it instead of copy_of in that same function. This is the same as the union-find algorithm as implemented for eexample by the RTL web pass. However, copyprop is not a bottleneck in the PR anymore so I won't do that unless another PR comes up where copyprop is a bottleneck.


Paolo


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]