Regenerate doc/tm.texi

	* doc/tm.texi: Regenerated.

From-SVN: r221151

gcc/ChangeLog

+2015-03-03  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* doc/tm.texi: Regenerated.
+
 2015-03-03  Max Filippov  <jcmvbkbc@gmail.com>
 
 	* builtins.c (expand_builtin_return_addr): Add

gcc/doc/tm.texi

@@ -3045,7 +3045,7 @@ A C expression whose value is RTL representing the value of the return
 address for the frame @var{count} steps up from the current frame, after
 the prologue.  @var{frameaddr} is the frame pointer of the @var{count}
 frame, or the frame pointer of the @var{count} @minus{} 1 frame if
-@code{RETURN_ADDR_IN_PREVIOUS_FRAME} is defined.
+@code{RETURN_ADDR_IN_PREVIOUS_FRAME} is nonzero.
 
 The value of the expression must always be the correct address when
 @var{count} is zero, but may be @code{NULL_RTX} if there is no way to
@@ -3053,8 +3053,9 @@ determine the return address of other frames.
 @end defmac
 
 @defmac RETURN_ADDR_IN_PREVIOUS_FRAME
-Define this if the return address of a particular stack frame is accessed
-from the frame pointer of the previous stack frame.
+Define this macro to nonzero value if the return address of a particular
+stack frame is accessed from the frame pointer of the previous stack
+frame.  The zero default for this macro is suitable for most ports.
 @end defmac
 
 @defmac INCOMING_RETURN_ADDR_RTX