Add a new pass to simplify specific half_powr function calls. This is

a specialized pass that it not likely to be generally useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58732 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/Scalar.h

@@ -317,6 +317,12 @@ Pass *createLoopDeletionPass();
 /// specific well-known (library) functions.
 FunctionPass *createSimplifyLibCallsPass();
 
+//===----------------------------------------------------------------------===//
+//
+/// createSimplifyHalfPowrLibCallsPass - This is an experimental pass that
+/// optimizes specific half_pow functions.
+FunctionPass *createSimplifyHalfPowrLibCallsPass();
+
 //===----------------------------------------------------------------------===//
 //
 // CodeGenPrepare - This pass prepares a function for instruction selection.