Added web pages, and some ee/passes stuff. *Broken*.

git-svn-id: http://llvm-py.googlecode.com/svn/trunk@3 8d1e9007-1d4e-0410-b67e-1979fd6579aa

www/src/examples.txt

@@ -0,0 +1,67 @@
+Examples
+========
+
+Here's an example:
+
+[python]
+source~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#!/usr/bin/env python
+
+from llvm.core import *
+
+## create a module
+module = Module.new("my_module")
+
+## create a function type taking two doubles and returning a (32-bit) integer
+ty_double = Type.double()
+ty_int    = Type.int()
+ty_func   = Type.function( ty_int, [ ty_double, ty_double ] )
+
+## create a function of this type
+func      = Function.new( module, ty_func, "foobar" )
+
+# name function args
+func.args[0].name = "arg1"
+func.args[1].name = "arg2"
+
+## implement the function
+
+# add a basic block
+entry = func.append_basic_block("entry")
+
+# create an llvm::IRBuilder
+builder = Builder.new()
+builder.position_at_end(entry)
+
+# add two args into temp1
+temp1 = builder.add(func.args[0], func.args[1], "temp1")
+
+# sub `1' from that
+one = Constant.real( ty_double, 1.0 )
+temp2 = builder.sub(temp1, one, "temp2")
+
+# convert to integer
+temp3 = builder.fptoui(temp2, ty_int, "temp3")
+
+# return it
+builder.ret(temp3)
+
+# dump the module to see the bc
+module.dump()
+source~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+which gives this output:
+
+-----------------------------------------------------------------------
+; ModuleID = 'my_module'
+
+define i32 @foobar(double %arg1, double %arg2) {
+entry:
+	%temp1 = add double %arg1, %arg2		; <double> [#uses=1]
+	%temp2 = sub double %temp1, 1.000000e+00		; <double> [#uses=1]
+	%temp3 = fptoui double %temp2 to i32		; <i32> [#uses=1]
+	ret i32 %temp3
+}
+-----------------------------------------------------------------------
+
+