From: Richard Henderson <rth@gcc.gnu.org>
Date: Mon, 4 Oct 1999 23:57:47 +0000 (-0700)
Subject: tree.c (build1): Set TREE_SIDE_EFFECTS for expressions that always have side-effects.
X-Git-Tag: prereleases/libstdc++-2.92~10210
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1fef02f64a6dd30c90d829df4de8b8706e4e3c02;p=thirdparty%2Fgcc.git

tree.c (build1): Set TREE_SIDE_EFFECTS for expressions that always have side-effects.

        * tree.c (build1): Set TREE_SIDE_EFFECTS for expressions that
        always have side-effects.  Use memset not bzero.
        (make_node): Likewise.

From-SVN: r29817
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a03ab5dd3eb6..a8a273419030 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+Mon Oct  4 16:56:11 1999  Richard Henderson  <rth@cygnus.com>
+
+	* tree.c (build1): Set TREE_SIDE_EFFECTS for expressions that
+	always have side-effects.  Use memset not bzero.
+	(make_node): Likewise.
+
 Mon Oct  4 16:22:20 1999  Mark Mitchell  <mark@codesourcery.com>
 
 	* stmt.c (expand_anon_union_decl): When any of the elements of the
@@ -36,7 +42,7 @@ Mon Oct  4 02:31:20 1999  Mark Mitchell  <mark@codesourcery.com>
 Mon Oct  4 02:12:41 1999  Mark Mitchell  <mark@codesourcery.com>
 
 	* tree.c (make_node): Set TREE_SIDE_EFFECTS for expressions that
-	are always have side-effects.
+	always have side-effects.
 
 Sun Oct  3 14:14:16 1999  Jeffrey A Law  (law@cygnus.com)
 
diff --git a/gcc/tree.c b/gcc/tree.c
index 221afba5184c..8f707474d237 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -1028,7 +1028,7 @@ make_node (code)
   else
     {
       t = (tree) obstack_alloc (obstack, length);
-      bzero ((PTR) t, length);
+      memset ((PTR) t, 0, length);
     }
 
 #ifdef GATHER_STATISTICS
@@ -3115,8 +3115,10 @@ build1 (code, type, node)
   if (ggc_p)
     t = ggc_alloc_tree (length);
   else
-    t = (tree) obstack_alloc (obstack, length);
-  bzero ((PTR) t, length);
+    {
+      t = (tree) obstack_alloc (obstack, length);
+      memset ((PTR) t, 0, length);
+    }
 
 #ifdef GATHER_STATISTICS
   tree_node_counts[(int)kind]++;
@@ -3138,6 +3140,25 @@ build1 (code, type, node)
 	TREE_RAISES (t) = 1;
     }
 
+  switch (code)
+    {
+    case INIT_EXPR:
+    case MODIFY_EXPR:
+    case VA_ARG_EXPR:
+    case RTL_EXPR:
+    case PREDECREMENT_EXPR:
+    case PREINCREMENT_EXPR:
+    case POSTDECREMENT_EXPR:
+    case POSTINCREMENT_EXPR:
+      /* All of these have side-effects, no matter what their
+	 operands are.  */
+      TREE_SIDE_EFFECTS (t) = 1;
+      break;
+	  
+    default:
+      break;
+    }
+
   return t;
 }