[llvm-commits] [PATCH] - Instcombine vector code optimizations

[Rotem, Nadav]

Hi, 

Please review the attached patch. I implemented two main optimizations:

1. Getelementptr (PTR, extract (vcast)))  -> Getelementptr (PTR, cast (extract)))  scalarize the casting of pointer index. 
   This generates much better code in cases where the gep index comes from a vector. 

2. Extend the EvaluateInDifferentType and CanEvaluateXXX to support Extract/Insert/ShuffleElement instructions.

Nadav


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