[Bug rtl-optimization/19580] [3.4/4.0 Regression] missed load/store motion

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-01-23 15:51 -------
 
g.c:                             g.c.t65.optimized: 
------------------------------------------------------------------------ 
void g ()                       | 
{                               |       <bb 0>: 
  r [0] += r [2];               |         D.1129 = r[0] + r[2]; 
  r [1] += r [0];               |         r[0] = D.1129; 
  r [2] += r [1];               |         D.1131 = D.1129 + r[1]; 
}                               |         r[1] = D.1131; 
                                |         r[2] = D.1131 + r[2]; 
                                |         return; 
 
What exactly are you expecting to be coalesced in this case, if I may ask? 
 
 
 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19580