* doc/c-tree.texi (DECL_ASSEMBLER_NAME): Mention that using this

	macro results in memory allocation.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@78767 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0a6a908..2df4662 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-03-02  Mark Mitchell  <mark@codesourcery.com>
+
+       * doc/c-tree.texi (DECL_ASSEMBLER_NAME): Mention that using this
+       macro results in memory allocation.
+
 2004-03-02  David O'Brien  <obrien@FreeBSD.org>
 
        * config/freebsd-spec.h (FBSD_DYNAMIC_LINKER): Add.

diff --git a/gcc/doc/c-tree.texi b/gcc/doc/c-tree.texi
index d1afe65..8cd059e 100644 (file)
--- a/gcc/doc/c-tree.texi
+++ b/gcc/doc/c-tree.texi
@@ -1105,6 +1105,13 @@ platform, it is the responsibility of the back end to perform those
 modifications.  (Of course, the back end should not modify
 @code{DECL_ASSEMBLER_NAME} itself.)
 
+Using @code{DECL_ASSEMBLER_NAME} will cause additional memory to be
+allocated (for the mangled name of the entity) so it should be used
+only when emitting assembly code.  It should not be used within the
+optimizers to determine whether or not two declarations are the same,
+even though some of the existing optimizers do use it in that way.
+These uses will be removed over time.
+
 @item DECL_EXTERNAL
 This predicate holds if the function is undefined.