[Bug tree-optimization/31136] [4.2 Regression] FRE ignores bit-field truncation (C and C++ front-end don't produce bit-field truncation

[pinskia at gcc dot gnu dot org]

------- Comment #10 from pinskia at gcc dot gnu dot org  2007-03-23 08:17 
-------
The good question is why does FRE not do anything on the trunk:
  s.b6 = 31;
  D.1597_1 = s.b6;
that really should be optimized at the FRE level.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31136