Chris Lattner 7fb29e19f0 Add the following instcombine xforms:
- Implement simple reassociation: (A|c1)|(B|c2) == (A|B)|(c1|c2)
  - (A & C1)+(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0
  - (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0

llvm-svn: 5743
2003-03-11 00:12:48 +00:00
..
2003-03-03 19:57:46 +00:00