llvm-project

History

Shuxin Yang 7b0c94e207 Implement XOR reassociation. It is based on following rules:

rule 1: (x | c1) ^ c2 => (x & ~c1) ^ (c1^c2),
     only useful when c1=c2
  rule 2: (x & c1) ^ (x & c2) = (x & (c1^c2))
  rule 3: (x | c1) ^ (x | c2) = (x & c3) ^ c3 where c3 = c1 ^ c2
  rule 4: (x | c1) ^ (x & c2) => (x & c3) ^ c1, where c3 = ~c1 ^ c2

 It reduces an application's size (in terms of # of instructions) by 8.9%.
 Reviwed by Pete Cooper. Thanks a lot!

 rdar://13212115  

llvm-svn: 178409

2013-03-30 02:15:01 +00:00

Hello

Move all of the header files which are involved in modelling the LLVM IR

2013-01-02 11:36:10 +00:00

InstCombine

Check if Type is a vector before calling function Type::getVectorNumElements.

2013-03-28 01:28:02 +00:00

Instrumentation

Minor simplification.

2013-03-28 22:40:08 +00:00

IPO

Move library call prototype attribute inference to functionattrs