[CMake] llvm_process_sources: Introduce a parameter, ADDITIONAL_HEADERS.

[oota-llvm.git] / docs / TableGenFundamentals.rst

diff --git a/docs/TableGenFundamentals.rst b/docs/TableGenFundamentals.rst
index 73bcd66a60cb1eebfa88329b5af958245245e58e..a28026f7840026d370bcffc37a9e0fab67c30314 100644 (file)
--- a/docs/TableGenFundamentals.rst
+++ b/docs/TableGenFundamentals.rst
@@ -1,5 +1,3 @@
-.. _tablegen:
-
 =====================
 TableGen Fundamentals
 =====================
@@ -603,7 +601,7 @@ the classes multiple times yourself, e.g. by writing:
   ...
 
 A ``defm`` can also be used inside a multiclass providing several levels of
-multiclass instanciations.
+multiclass instantiations.
 
 .. code-block:: llvm
 
@@ -729,7 +727,7 @@ opened, as in the case with the ``CALL*`` instructions above.
 
 It's also possible to use "let" expressions inside multiclasses, providing more
 ways to factor out commonality from the records, specially if using several
-levels of multiclass instanciations. This also avoids the need of using "let"
+levels of multiclass instantiations. This also avoids the need of using "let"
 expressions within subsequent records inside a multiclass.
 
 .. code-block:: llvm
@@ -793,6 +791,10 @@ Expressions used by code generator to describe instructions and isel patterns:
 TableGen backends
 =================
 
+Until we get a step-by-step HowTo for writing TableGen backends, you can at
+least grab the boilerplate (build system, new files, etc.) from Clang's
+r173931.
+
 TODO: How they work, how to write one.  This section should not contain details
 about any particular backend, except maybe ``-print-enums`` as an example.  This
 should highlight the APIs in ``TableGen/Record.h``.