the Expression ResultVariable so it's in a known initial state. llvm-svn: 252072
isn't used in this commit but will be in a future commit. llvm-svn: 251887
The Go interpreter doesn't JIT or use LLVM, so this also moves all the JIT related code from UserExpression to a new class LLVMUserExpression. Differential Revision: http://reviews.llvm.org/D13073 Fix merge llvm-svn: 251820