[Bug rtl-optimization/18942] [4.0 Regression] Do loop is not as optimizationed as 3.3.2

[dje at gcc dot gnu dot org]

------- Additional Comments From dje at gcc dot gnu dot org  2004-12-12 19:00 -------
The new doloop generator is being more conservative for the signed int 
argument and induction variable.  Unsigned int produces better code.  Maybe 
the new algorithm could be more aggressive when one of the -ffast-math sub-
switches is enabled.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18942