re PR middle-end/45869 (type mismatch in shift expression produces ice with -O3 and -m32)

2010-10-07  Richard Guenther  <rguenther@suse.de>

	PR middle-end/45869
	* tree-cfg.c (verify_gimple_assign_binary): Allow vector shifts
	of pointers.

	* gcc.dg/torture/pr45869.c: New testcase.

From-SVN: r165113

gcc/ChangeLog

+2010-10-07  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/45869
+	* tree-cfg.c (verify_gimple_assign_binary): Allow vector shifts
+	of pointers.
+
 2010-10-07  Alan Modra  <amodra@gmail.com>
 
 	* config/rs6000/rs6000.c (rs6000_emit_prologue): Use gen_int_mode

gcc/testsuite/ChangeLog

+2010-10-07  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/45869
+	* gcc.dg/torture/pr45869.c: New testcase.
+
 2010-10-07  Iain Sandoe  <iains@gcc.gnu.org>
 
 	* objc.dg/set-not-used-1.m: New

gcc/testsuite/gcc.dg/torture/pr45869.c

+/* { dg-do compile } */
+
+char *
+foo (unsigned int count, void **list)
+{
+  char *minaddr = (char *) list[0];
+  unsigned int i; /* NOTE: change of type to "int" eliminates the ICE */
+  for (i = 1; i < count; i++)
+    {
+      char *addr = (char *) list[i];
+      if (addr < minaddr)
+	minaddr = addr;
+    }
+  return minaddr;
+}

gcc/tree-cfg.c

@@ -3422,6 +3422,7 @@ verify_gimple_assign_binary (gimple stmt)
       {
 	if (TREE_CODE (rhs1_type) != VECTOR_TYPE
 	    || !(INTEGRAL_TYPE_P (TREE_TYPE (rhs1_type))
+		 || POINTER_TYPE_P (TREE_TYPE (rhs1_type))
 		 || FIXED_POINT_TYPE_P (TREE_TYPE (rhs1_type))
 		 || SCALAR_FLOAT_TYPE_P (TREE_TYPE (rhs1_type)))
 	    || (!INTEGRAL_TYPE_P (rhs2_type)
@@ -3435,9 +3436,9 @@ verify_gimple_assign_binary (gimple stmt)
 	    debug_generic_expr (rhs2_type);
 	    return true;
 	  }
-	/* For shifting a vector of floating point components we
+	/* For shifting a vector of non-integral components we
 	   only allow shifting by a constant multiple of the element size.  */
-	if (SCALAR_FLOAT_TYPE_P (TREE_TYPE (rhs1_type))
+	if (!INTEGRAL_TYPE_P (TREE_TYPE (rhs1_type))
 	    && (TREE_CODE (rhs2) != INTEGER_CST
 		|| !div_if_zero_remainder (EXACT_DIV_EXPR, rhs2,
 					   TYPE_SIZE (TREE_TYPE (rhs1_type)))))