rtl.texi (RTX_AUTOINC): Document that the first operand is the automo…

…dified register. gcc/ * doc/rtl.texi (RTX_AUTOINC): Document that the first operand is the automodified register. From-SVN: r214890
robbiev · Sep 3, 2014 · 64e0418 · 64e0418
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diff --git a/gcc/ChangeLog b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-09-03  Richard Sandiford  <[email protected]>
+
+	* doc/rtl.texi (RTX_AUTOINC): Document that the first operand is
+	the automodified register.
+
 2014-09-03  Richard Sandiford  <[email protected]>
 
 	* output.h (get_some_local_dynamic_name): Declare.

diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi
@@ -193,7 +193,8 @@ An RTX code for something that matches in insns, such as
 
 @item RTX_AUTOINC
 An RTX code for an auto-increment addressing mode, such as
-@code{POST_INC}.
+@code{POST_INC}.  @samp{XEXP (@var{x}, 0)} gives the auto-modified
+register.
 
 @item RTX_EXTRA
 All other RTX codes.  This category includes the remaining codes used