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Re: combine permutations in gimple


On Mon, 13 Aug 2012, Marc Glisse wrote:

On Mon, 13 Aug 2012, Richard Guenther wrote:

If your new predicate would match more places (can you do a quick search?)

You mean: if there are more optimizations that either already check for double use in the same statement, or could benefit from doing so? I'll take a look.

I couldn't find anything obvious (not that I understood a significant percentage of what I saw...).


Note that the comments are efficient since the only current use of num_imm_uses is in a debug printf call.


I'll give it a few more days for the conversation to settle, so I know what I should do between:
- the barely modified patch you accepted,
- the check asked by Jakub,
- the restriction to identity that prevents any regression (well...),
- something else?


--
Marc Glisse


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