ExecutionEngine: fix JIT/MCJIT selectTarget() duplication

This prepares for making JITCtor/MCJITCtor take a
TargetMachine* directly from clients like EngineBuilder.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131025 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/ExecutionEngine.h

@@ -210,6 +210,14 @@ public:
                                     CodeModel::Model CMM =
                                       CodeModel::Default);
 
+  /// selectTarget - Pick a target either via -march or by guessing the native
+  /// arch.  Add any CPU features specified via -mcpu or -mattr.
+  static TargetMachine *selectTarget(Module *M,
+                                     StringRef MArch,
+                                     StringRef MCPU,
+                                     const SmallVectorImpl<std::string>& MAttrs,
+                                     std::string *Err);
+
   /// addModule - Add a Module to the list of modules that we can JIT from.
   /// Note that this takes ownership of the Module: when the ExecutionEngine is
   /// destroyed, it destroys the Module as well.