[globalisel][docs] Add a pass index

dsandersllvm · dsandersllvm · commit 91e2151d04cc · 2019-10-30T12:06:22.000-07:00
diff --git a/llvm/docs/GlobalISel/index.rst b/llvm/docs/GlobalISel/index.rst
@@ -54,6 +54,15 @@ the following sections.
   Porting
   Resources
 
+More information on specific passes can be found in the following sections:
+
+.. toctree::
+  :maxdepth: 1
+
+  IRTranslator
+  Legalizer
+  RegBankSelect
+  InstructionSelect
 
 .. _progress:
 
