Fixup debug information references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227020 91177308-0d34-0410-b5e6-96231b3b80d8

docs/tutorial/LangImpl1.rst

@@ -73,7 +73,14 @@ in the various pieces. The structure of the tutorial is:
    about this is how easy and trivial it is to construct SSA form in
    LLVM: no, LLVM does *not* require your front-end to construct SSA
    form!
--  `Chapter #8 <LangImpl8.html>`_: Conclusion and other useful LLVM
+-  `Chapter #8 <LangImpl8.html>`_: Extending the Language: Debug
+   Information - Having built a decent little programming language with
+   control flow, functions and mutable variables, we consider what it
+   takes to add debug information to standalone executables. This debug
+   information will allow you to set breakpoints in Kaleidoscope
+   functions, print out argument variables, and call functions - all
+   from within the debugger!
+-  `Chapter #9 <LangImpl8.html>`_: Conclusion and other useful LLVM
    tidbits - This chapter wraps up the series by talking about
    potential ways to extend the language, but also includes a bunch of
    pointers to info about "special topics" like adding garbage

docs/tutorial/LangImpl7.rst

@@ -856,5 +856,5 @@ Here is the code:
 .. literalinclude:: ../../examples/Kaleidoscope/Chapter7/toy.cpp
    :language: c++
 
-`Next: Conclusion and other useful LLVM tidbits <LangImpl8.html>`_
+`Next: Extending the Language: Debug Information <LangImpl8.html>`_
 

docs/tutorial/LangImpl9.rst

@@ -14,9 +14,10 @@ grown our little Kaleidoscope language from being a useless toy, to
 being a semi-interesting (but probably still useless) toy. :)
 
 It is interesting to see how far we've come, and how little code it has
-taken. We built the entire lexer, parser, AST, code generator, and an
-interactive run-loop (with a JIT!) by-hand in under 1000 lines of
-(non-comment/non-blank) code.
+taken. We built the entire lexer, parser, AST, code generator, an
+interactive run-loop (with a JIT!), and emitted debug information in
+standalone executables - all in under 1000 lines of (non-comment/non-blank)
+code.
 
 Our little language supports a couple of interesting features: it
 supports user defined binary and unary operators, it uses JIT
@@ -68,12 +69,6 @@ For example, try adding:
    collection, note that LLVM fully supports `Accurate Garbage
    Collection <../GarbageCollection.html>`_ including algorithms that
    move objects and need to scan/update the stack.
--  **debugger support** - LLVM supports generation of `DWARF Debug
-   info <../SourceLevelDebugging.html>`_ which is understood by common
-   debuggers like GDB. Adding support for debug info is fairly
-   straightforward. The best way to understand it is to compile some
-   C/C++ code with "``clang -g -O0``" and taking a look at what it
-   produces.
 -  **exception handling support** - LLVM supports generation of `zero
    cost exceptions <../ExceptionHandling.html>`_ which interoperate with
    code compiled in other languages. You could also generate code by