[Bug target/35363] Missing bit field coalescing optimization

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2008-02-25 18:44 -------
I would expect the equivalent of

  int tmp = a;
  tmp &= 0x0030;  // fix the mask to be correct, all bits of b3
  tmp |= 2 | 3 | 8; // constant folded and properly shifted
  a = tmp;

I still see three ORs for ppc64 and non-combined rlwimi ops for ppc32.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35363