re PR tree-optimization/30132 (ICE in find_lattice_value, at tree-complex.c:133)

2008-01-09  Richard Guenther  <rguenther@suse.de>
	Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30132
	* gimplify.c (gimplify_cond_expr): Do not create an addressable
	temporary if an rvalue is ok or an lvalue is not required.

	* gcc.c-torture/compile/pr30132.c: New testcase.

Co-Authored-By: Andrew Pinski <andrew_pinski@playstation.sony.com>

From-SVN: r131430

gcc/ChangeLog

 2008-01-09  Richard Guenther  <rguenther@suse.de>
+	Andrew Pinski  <andrew_pinski@playstation.sony.com>
+
+	PR middle-end/30132
+	* gimplify.c (gimplify_cond_expr): Do not create an addressable
+	temporary if an rvalue is ok or an lvalue is not required.
+
+2008-01-09  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/34458
 	* tree-data-ref.c (initialize_matrix_A): Use tree_low_cst,

gcc/gimplify.c

@@ -2633,7 +2633,11 @@ gimplify_cond_expr (tree *expr_p, tree *pre_p, fallback_t fallback)
     {
       tree result;
 
-      if ((fallback & fb_lvalue) == 0)
+      /* If an rvalue is ok or we do not require an lvalue, avoid creating
+	 an addressable temporary.  */
+      if (((fallback & fb_rvalue)
+	   || !(fallback & fb_lvalue))
+	  && !TREE_ADDRESSABLE (type))
 	{
 	  if (gimplify_ctxp->allow_rhs_cond_expr
 	      /* If either branch has side effects or could trap, it can't be

gcc/testsuite/ChangeLog

 2008-01-09  Richard Guenther  <rguenther@suse.de>
+	Andrew Pinski  <andrew_pinski@playstation.sony.com>
+
+	PR middle-end/30132
+	* gcc.c-torture/compile/pr30132.c: New testcase.
+
+2008-01-09  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/34458
 	* gcc.c-torture/compile/pr34458.c: New testcase.

gcc/testsuite/gcc.c-torture/compile/pr30132.c

+double testit(double _Complex* t)
+{
+  return *t==0.0?0.0:-*t;
+}
+