From dc700f497caaf7c36db7220ab6f827b8dcf6a7e6 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@gcc.gnu.org>
Date: Thu, 26 Aug 2004 17:55:38 -0700
Subject: [PATCH] Update comment for staticp.
From-SVN: r86652
---
gcc/tree.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/gcc/tree.c b/gcc/tree.c
index 27efff1d49ff..1c5060e5869b 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -1363,8 +1363,9 @@ array_type_nelts (tree type)
: fold (build2 (MINUS_EXPR, TREE_TYPE (max), max, min)));
}
-/* Return true if arg is static -- a reference to an object in
- static storage. This is not the same as the C meaning of `static'. */
+/* If arg is static -- a reference to an object in static storage -- then
+ return the object. This is not the same as the C meaning of `static'.
+ If arg isn't static, return NULL. */
tree
staticp (tree arg)
@@ -2270,7 +2271,11 @@ do { tree _node = (NODE); \
address of a volatile variable is not volatile.) If it's a constant,
the address is both invariant and constant. Otherwise it's neither. */
if (TREE_CODE (node) == INDIRECT_REF)
- UPDATE_TITCSE (node);
+ {
+ /* If this is &((T*)0)->field, then this is a form of addition. */
+ if (TREE_CODE (TREE_OPERAND (node, 0)) != INTEGER_CST)
+ UPDATE_TITCSE (node);
+ }
else if (DECL_P (node))
{
if (staticp (node))
--
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