[Bug rtl-optimization/27437] [4.2 Regression]: -O3 regression due to SEE

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2006-05-05 15:04 -------
(In reply to comment #5)
> There are several problems with the current SEE implementation:
> 
> 1. SEE uses NEXT_INSN/PREV_INSN to find adjacent insns to check if SEE
> is safe. But with -g, NEXT_INSN/PREV_INSN may point to a NOTE:
> 

That one is easy to fix.  Please post a patch to using
next_nonnote_insn/prev_nonnote_insn instead.

And then the -O3 (without -g) is a different issue.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27437