From: Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
Date: Mon, 11 Nov 2002 21:29:19 +0000 (+0000)
Subject: re PR c/8467 (Bug in sibling call optimization)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=303b90b00106ed64c731827336490830ebf6ca4a;p=gcc.git

re PR c/8467 (Bug in sibling call optimization)

2002-11-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	PR c/8467
	* gcc.c-torture/execute/20021111-1.c

From-SVN: r59026
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dcc0bd2570b..7b06a1e6467 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2002-11-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
+
+	PR c/8467
+	* stmt.c (tail_recursion_args): Handle DECL_MODE differing from the
+	mode of DECL_RTL case.
+
 2002-11-11  Janis Johnson  <janis187@us.ibm.com>
 
 	* doc/contrib.texi: Merge in the list from the libstdc++ web pages.
diff --git a/gcc/stmt.c b/gcc/stmt.c
index c07fe663fb3..360abe19571 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -3311,8 +3311,18 @@ tail_recursion_args (actuals, formals)
       if (GET_MODE (DECL_RTL (f)) == GET_MODE (argvec[i]))
 	emit_move_insn (DECL_RTL (f), argvec[i]);
       else
-	convert_move (DECL_RTL (f), argvec[i],
-		      TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (a))));
+	{
+	  rtx tmp = argvec[i];
+
+	  if (DECL_MODE (f) != GET_MODE (DECL_RTL (f)))
+	    {
+	      tmp = gen_reg_rtx (DECL_MODE (f));
+	      convert_move (tmp, argvec[i],
+			    TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (a))));
+	    }
+	  convert_move (DECL_RTL (f), tmp,
+			TREE_UNSIGNED (TREE_TYPE (TREE_VALUE (a))));
+	}
     }
 
   free_temp_slots ();
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 99af5fe5eeb..2a8434fa526 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2002-11-11  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
+
+	PR c/8467
+	* gcc.c-torture/execute/20021111-1.c
+
 2002-11-09  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR c/8439
diff --git a/gcc/testsuite/gcc.c-torture/execute/20021111-1.c b/gcc/testsuite/gcc.c-torture/execute/20021111-1.c
new file mode 100644
index 00000000000..b81fa0b0f88
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20021111-1.c
@@ -0,0 +1,31 @@
+/* Origin: PR c/8467 */
+
+extern void abort (void);
+extern void exit (int);
+
+int aim_callhandler(int sess, int conn, unsigned short family, unsigned short type);
+
+int aim_callhandler(int sess, int conn, unsigned short family, unsigned short type)
+{
+  static int i = 0;
+
+  if (!conn)
+    return 0;
+
+  if (type == 0xffff)
+    {
+      return 0;
+    }
+
+  if (i >= 1)
+    abort ();
+
+  i++;
+  return aim_callhandler(sess, conn, family, (unsigned short) 0xffff);
+}
+
+int main (void)
+{
+  aim_callhandler (0, 1, 0, 0);
+  exit (0);
+}