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Subject: [Bug middle-end/42371] dead code not eliminated during folding with whole-program
Date: Thu, 17 Jan 2013 18:29:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42371

--- Comment #13 from Matt Hargett <matt at use dot net> 2013-01-17 18:28:18 UTC ---
No. 

4.6 doesn't devirt (at -O2 or -O3) and therefore the DCE isn't relevant.

At both -O2 and -O3, with and without -fwhole-program, both with and without
adjustin declarations one()/two() to one(void)/two(void):

4.7 and google/4.7 both devirt correctly but the DCE on the function bodies
doesn't happen.

4.8 also devirts correctly, but the DCE on the function bodies doesn't happen.