re PR c/47809 (ICE in gimplify_expr, at gimplify.c:7291)

	PR c/47809
	* c-common.c (c_fully_fold_internal): Handle VIEW_CONVERT_EXPR.

	* gcc.target/i386/pr47809.c: New test.

From-SVN: r170323

gcc/c-family/ChangeLog

+2011-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/47809
+	* c-common.c (c_fully_fold_internal): Handle VIEW_CONVERT_EXPR.
+
 2011-02-17  Iain Sandoe  <iains@gcc.gnu.org>
 
 	* c.opt (fobjc-abi-version=) New.

gcc/c-family/c-common.c

@@ -1213,6 +1213,7 @@ c_fully_fold_internal (tree expr, bool in_init, bool *maybe_const_operands,
     case FIX_TRUNC_EXPR:
     case FLOAT_EXPR:
     CASE_CONVERT:
+    case VIEW_CONVERT_EXPR:
     case NON_LVALUE_EXPR:
     case NEGATE_EXPR:
     case BIT_NOT_EXPR:

gcc/testsuite/ChangeLog

+2011-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/47809
+	* gcc.target/i386/pr47809.c: New test.
+
 2011-02-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 	    Tobias Burnus  <burnus@net-b.de>
 

gcc/testsuite/gcc.target/i386/pr47809.c

+/* PR c/47809 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse2" } */
+
+#include <emmintrin.h>
+double bar (double, double);
+
+__m128d
+foo (__m128d x)
+{
+  x *= (__m128d) { bar (1.0, 1.0), 0.0 };
+  return (__m128d) ((__m128i) x ^ (__m128i) { 0, 0});
+}