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Re: [3.3 PATCH] Fix PR optimization/11841
Eric Botcazou <ebotcazou@libertysurf.fr> writes:
| > I was waiting for the outcome of your conversation with Richard G.
| > It looks like that this patch won't resolve optimization/13653. But
| > this is already a good step forward. So, yes, this patch is OK for
| > gcc-3_3-branch.
|
| Do you want me to apply it to the branch now?
If you believe it is the final form you want it, yes, please do.
| As for PR opt/13653, I came to the conclusion that the problem is different.
| Volker identified the patch that had created PR opt/11841 and reverting it
| doesn't cure PR opt/13653. Moreover I skimmed through the RTL generated by
| GCSE and didn't find any problematic REG_EQUAL note.
|
| I spent a couple of hours 2 weeks ago on it, but the lack of reduced testcase
Your efforts to address this issue are appreciated. The size of the
testcase is definitely a big issue.
| is definitely a blocker. So either the bug shows up only with big code and
| there is little chance it will be fixed, or the bottleneck is the reduction
| process and we lack an automated tool in this area.
:-(
-- Gaby