re PR target/27542 (the ms_struct pragma is not documented)

2006-06-11  Eric Christopher  <echristo@apple.com>

        PR 27542
        * doc/extend.texi (Structure-Packing Pragmas): Document ms_struct
        pragma.

From-SVN: r114561

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 41d4405..6c5fa70 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2006-06-11  Eric Christopher  <echristo@apple.com>
+
+       PR 27542
+       * doc/extend.texi (Structure-Packing Pragmas): Document ms_struct
+       pragma.
+
 2006-06-11  Roger Sayle  <roger@eyesopen.com>
 
        PR target/27858
@@ -105,11 +111,11 @@
 2006-06-07  Andrew MacLeod  <amacleod@redhat.com>
 
        PR middle-end/27793
-       * tree-dfa.c (referenced_vars_dup_list): New.  List of duplicate 
+       * tree-dfa.c (referenced_vars_dup_list): New.  List of duplicate
        referenced_variables with matching DECL_UID's.
        (find_referenced_vars): Make sure duplicate list is empty to start.
        (referenced_var_p): Remove.
-       (referenced_var_check_and_insert): Renamed from referenced_var_insert.  
+       (referenced_var_check_and_insert): Renamed from referenced_var_insert.
        Check if var is in the list, and add if needed.  Update the duplicate
        list if a different var is in the list with the same DECL_UID.
        (add_referenced_var): Call routine to check and insert.

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 47b1fce..f029ca2 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -9672,6 +9672,17 @@ multiple @code{#pragma pack(@var{n})} instances and finalized by a single
 @code{#pragma pack(pop)}.
 @end enumerate
 
+Some targets, e.g. i386 and powerpc, support the @code{ms_struct}
+@code{#pragma} which lays out a structure as the documented
+@code{__attribute__ ((ms_struct))}.
+@enumerate
+@item @code{#pragma ms_struct on} turns on the layout for structures
+declared.
+@item @code{#pragma ms_struct off} turns off the layout for structures
+declared.
+@item @code{#pragma ms_struct reset} goes back to the default layout.
+@end enumerate
+
 @node Weak Pragmas
 @subsection Weak Pragmas