[Orc] Add a Kaleidoscope tutorial for Orc demonstrating eager compilation.

This tutorial demonstrates a very basic custom Orc JIT stack that performs eager
compilation: All modules are CodeGen'd immediately upon being added to the JIT.

llvm-svn: 228456

llvm/examples/Kaleidoscope/Orc/initial/Makefile

@@ -0,0 +1,9 @@
+.PHONY: all
+all: toy
+
+toy: toy.cpp
+	clang++ -std=c++11 toy.cpp -g -O0 -rdynamic -fno-rtti `llvm-config --cppflags --ldflags --system-libs --libs core orcjit native` -o toy
+
+.PHONY: clean
+clean:
+	rm -f toy

llvm/examples/Kaleidoscope/Orc/initial/README.txt

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+//===----------------------------------------------------------------------===/
+//                 Kaleidoscope with Orc - Initial Version
+//===----------------------------------------------------------------------===//
+
+This version of Kaleidoscope with Orc demonstrates fully eager compilation. When
+a function definition or top-level expression is entered it is immediately
+translated (IRGen'd) to LLVM IR and added to the JIT, where it is code-gen'd to
+native code and either stored (for function definitions) or executed (for
+top-level expressions).
+
+This directory contain a Makefile that allow the code to be built in a
+standalone manner, independent of the larger LLVM build infrastructure. To build
+the program you will need to have 'clang++' and 'llvm-config' in your path.