Document passes.def.

gcc/
	* doc/cfg.texi (Control Flow): Refer to passes.def instead of
	passes.c.
	* doc/passes.texi (Pass manager): Refer to passes.def.

From-SVN: r206054

gcc/ChangeLog

@@ -1,5 +1,9 @@
 2013-12-17  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* doc/cfg.texi (Control Flow): Refer to passes.def instead of
+	passes.c.
+	* doc/passes.texi (Pass manager): Refer to passes.def.
+
 	* doc/gccint.texi (Top): Fix inclusion order.
 
 2013-12-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

gcc/doc/cfg.texi

@@ -23,7 +23,7 @@ used to represent the control flow graph are defined in
 
 In GCC, the representation of control flow is maintained throughout
 the compilation process, from constructing the CFG early in 
-@code{pass_build_cfg} to @code{pass_free_cfg} (see @file{passes.c}).
+@code{pass_build_cfg} to @code{pass_free_cfg} (see @file{passes.def}).
 The CFG takes various different modes and may undergo extensive
 manipulations, but the graph is always valid between its construction
 and its release.  This way, transfer of information such as data flow,

gcc/doc/passes.texi

@@ -208,6 +208,7 @@ semantic checks), it should return @code{GS_ERROR}.
 
 The pass manager is located in @file{passes.c}, @file{tree-optimize.c}
 and @file{tree-pass.h}.
+It processes passes as described in @file{passes.def}.
 Its job is to run all of the individual passes in the correct order,
 and take care of standard bookkeeping that applies to every pass.