split PHI node stuff out to InstCombinePHI.cpp

llvm-svn: 92682

Author: lattner

llvm/lib/Transforms/InstCombine/CMakeLists.txt

@@ -2,6 +2,7 @@ add_llvm_library(LLVMInstCombine
   InstructionCombining.cpp
   InstCombineCasts.cpp
   InstCombineCompares.cpp
+  InstCombinePHI.cpp
   InstCombineSimplifyDemanded.cpp
   )