Add an early implementation of a partial inlining pass. The idea behind this

is that, for functions whose bodies are entirely guarded by an if-statement, it
can be profitable to pull the test out of the callee and into the caller.

This code has had some cursory testing, but still has a number of known issues
on the LLVM test suite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73338 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/IPO.h

@@ -214,6 +214,11 @@ Pass *createFunctionAttrsPass();
 ///
 ModulePass *createMergeFunctionsPass();
 
+//===----------------------------------------------------------------------===//
+/// createPartialInliningPass - This pass inlines parts of functions.
+///
+ModulePass *createPartialInliningPass();
+
 } // End llvm namespace
 
 #endif