DOC: Add first version of updated documentation.

docs/source/doc/examples/JITTutorial2.rst

@@ -1,62 +1,55 @@
-+-------------------------+
-| layout: page            |
-+-------------------------+
-| title: JIT Tutorial 2   |
-+-------------------------+
+A More Complicated Function
+====================
 
-{% highlight python %} #!/usr/bin/env python
+.. code-block:: python
 
-from llvm.core import \*
+   #!/usr/bin/env python
 
-create a module
-===============
+   from llvm.core import *
 
-module = Module.new ("tut2")
+   #create a module
+   module = Module.new("tut2")
 
-create a function type taking 2 integers, return a 32-bit integer
-=================================================================
+   #create a function type taking 2 integers, return a 32-bit integer
+   ty_int = Type.int(32)
+   func_type = Type.function(ty_int, (ty_int, ty_int))
 
-ty\_int = Type.int (32) func\_type = Type.function (ty\_int, (ty\_int,
-ty\_int))
+   #create a function of that type
+   gcd = Function.new(module, func_type, "gcd")
 
-create a function of that type
-==============================
+   #name function args
+   x = gcd.args[0]; x.name = "x"
+   y = gcd.args[1]; y.name = "y"
 
-gcd = Function.new (module, func\_type, "gcd")
+   #implement the function
 
-name function args
-==================
+   #blocks...
+   entry = gcd.append_basic_block("entry")
+   ret = gcd.append_basic_block("return") 
+   cond_false = gcd.append_basic_block("cond_false")
+   cond_true = gcd.append_basic_block("cond_true")
+   cond_false_2 = gcd.append_basic_block("cond_false_2")
 
-x = gcd.args[0]; x.name = "x" y = gcd.args[1]; y.name = "y"
+   #create a llvm::IRBuilder
+   bldr = Builder.new(entry)
+   x_eq_y = bldr.icmp(IPRED_EQ, x, y, "tmp")
+   bldr.cbranch(x_eq_y, ret, cond_false)
 
-implement the function
-======================
+   bldr.position_at_end (ret)
+   bldr.ret(x)
 
-blocks...
-=========
+   bldr.position_at_end(cond_false)
+   x_lt_y = bldr.icmp(IPRED_ULT, x, y, "tmp")
+   bldr.cbranch(x_lt_y, cond_true, cond_false_2)
 
-entry = gcd.append\_basic\_block ("entry") ret =
-gcd.append\_basic\_block ("return") cond\_false =
-gcd.append\_basic\_block ("cond\_false") cond\_true =
-gcd.append\_basic\_block ("cond\_true") cond\_false\_2 =
-gcd.append\_basic\_block ("cond\_false\_2")
+   bldr.position_at_end(cond_true)
+   y_sub_x = bldr.sub(y, x, "tmp")
+   recur_1 = bldr.call(gcd, (x, y_sub_x,), "tmp")
+   bldr.ret(recur_1)
 
-create a llvm::IRBuilder
-========================
+   bldr.position_at_end(cond_false_2)
+   x_sub_y = bldr.sub(x, y, "x_sub_y")
+   recur_2 = bldr.call(gcd, (x_sub_y, y,), "tmp")
+   bldr.ret(recur_2)
 
-bldr = Builder.new (entry) x\_eq\_y = bldr.icmp (IPRED\_EQ, x, y, "tmp")
-bldr.cbranch (x\_eq\_y, ret, cond\_false)
-
-bldr.position\_at\_end (ret) bldr.ret(x)
-
-bldr.position\_at\_end (cond\_false) x\_lt\_y = bldr.icmp (IPRED\_ULT,
-x, y, "tmp") bldr.cbranch (x\_lt\_y, cond\_true, cond\_false\_2)
-
-bldr.position\_at\_end (cond\_true) y\_sub\_x = bldr.sub (y, x, "tmp")
-recur\_1 = bldr.call (gcd, (x, y\_sub\_x,), "tmp") bldr.ret (recur\_1)
-
-bldr.position\_at\_end (cond\_false\_2) x\_sub\_y = bldr.sub (x, y,
-"x\_sub\_y") recur\_2 = bldr.call (gcd, (x\_sub\_y, y,), "tmp") bldr.ret
-(recur\_2)
-
-print(module) {% endhighlight %}
+   print module