[Bug tree-optimization/19686] [4.0 Regression] loop performance decrease, not comparing against 0

schlie at comcast dot net gcc-bugzilla@gcc.gnu.org
Mon Feb 7 14:45:00 GMT 2005


------- Additional Comments From schlie at comcast dot net  2005-02-07 02:42 -------
(In reply to comment #2)

Might it be possible to change the severity to at least "normal"
and possibly reclassify it as a "mis-optimization", as it's very
typical for folks who know processors to intentionally write
code such that compairs are agaisnt zero, as they are typically
free; having the compiler de-optimize an otherwise more effecient
explicit code fragment would seem like something that would be fairly
critical to remedy?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19686



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