Move the function extractor pass from tools/extract into lib/Xform/IPO

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4759 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/IPO.h

@@ -9,6 +9,7 @@
 #define LLVM_TRANSFORMS_IPO_H
 
 class Pass;
+class Function;
 
 //===----------------------------------------------------------------------===//
 // createConstantMergePass - This function returns a new pass that merges
@@ -34,6 +35,13 @@ Pass *createDeadTypeEliminationPass();
 Pass *createGlobalDCEPass();
 
 
+//===----------------------------------------------------------------------===//
+// createFunctionExtractionPass - This pass deletes as much of the module as
+// possible, except for the function specified.
+//
+Pass *createFunctionExtractionPass(Function *F);
+
+
 //===----------------------------------------------------------------------===//
 // FunctionResolvingPass - Go over the functions that are in the module and
 // look for functions that have the same name.  More often than not, there will