Patch for OpenBSD, x86_64 support (Laurence Tratt)

Added JIT tutorial ports (Sebastien Binet)
Updated documentation

git-svn-id: http://llvm-py.googlecode.com/svn/trunk@23 8d1e9007-1d4e-0410-b67e-1979fd6579aa

test/JITTutorial1.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+from llvm.core import *
+
+# create a module
+module = Module.new ("tut1")
+
+# create a function type taking 3 32-bit integers, return a 32-bit integer
+ty_int = Type.int (32)
+func_type = Type.function (ty_int, (ty_int,)*3)
+
+# create a function of that type
+mul_add = Function.new (module, func_type, "mul_add")
+mul_add.calling_convention = CC_C
+x = mul_add.args[0]; x.name = "x"
+y = mul_add.args[1]; y.name = "y"
+z = mul_add.args[2]; z.name = "z"
+
+# implement the function
+
+# new block
+blk = mul_add.append_basic_block ("entry")
+
+# IR builder
+bldr = Builder.new (blk)
+tmp_1 = bldr.mul (x, y, "tmp_1")
+tmp_2 = bldr.add (tmp_1, z, "tmp_2")
+
+bldr.ret (tmp_2)
+
+print module