From: Bernd Schmidt <bernds@redhat.co.uk>
Date: Thu, 11 Jan 2001 17:53:42 +0000 (+0000)
Subject: Backport changes to set TREE_SIDE_EFFECTS automatically to 2.95 branch
X-Git-Tag: prereleases/gcc-2.95.3-test2~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9b1b1fcc545ae15e1fd402644f62a5ff267f32d;p=thirdparty%2Fgcc.git

Backport changes to set TREE_SIDE_EFFECTS automatically to 2.95 branch

From-SVN: r38912
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3d40878c4fa4..dc923e29be39 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2001-01-11  Bernd Schmidt  <bernds@redhat.co.uk>
+
+	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.
+
+	Mon Oct  4 02:12:41 1999  Mark Mitchell  <mark@codesourcery.com>
+	* tree.c (make_node): Set TREE_SIDE_EFFECTS for expressions that
+	always have side-effects.
+
 2001-01-01  Bernd Schmidt  <bernds@redhat.co.uk>
 
 	* version.c: Bump.
diff --git a/gcc/tree.c b/gcc/tree.c
index 5e29d2f9115b..b6cdf7bebf88 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -1121,6 +1121,26 @@ make_node (code)
     case 'c':
       TREE_CONSTANT (t) = 1;
       break;
+
+     case 'e':
+      switch (code)
+	{
+	case INIT_EXPR:
+	case MODIFY_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;
+	}
+      break;
     }
 
   return t;
@@ -3107,6 +3127,24 @@ build1 (code, type, node)
 	TREE_RAISES (t) = 1;
     }
 
+  switch (code)
+    {
+     case INIT_EXPR:
+     case MODIFY_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;
 }