re PR target/21099 (ICE on mmx intrinsics)

        PR target/21099
        * config/i386/i386.c (ix86_split_to_parts): Use proper mode when
        simplifying CONST_VECTOR.

From-SVN: r98624

gcc/ChangeLog

+2005-04-23  Richard Henderson  <rth@redhat.com>
+
+	PR target/21099
+	* config/i386/i386.c (ix86_split_to_parts): Use proper mode when
+	simplifying CONST_VECTOR.
+
 2005-04-23  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* tree-ssa-live.c (live_worklist): Take a stack allocated on

gcc/config/i386/i386.c

@@ -10621,7 +10621,10 @@ ix86_split_to_parts (rtx operand, rtx *parts, enum machine_mode mode)
   if (GET_CODE (operand) == CONST_VECTOR)
     {
       enum machine_mode imode = int_mode_for_mode (mode);
-      operand = simplify_subreg (imode, operand, mode, 0);
+      /* Caution: if we looked through a constant pool memory above,
+	 the operand may actually have a different mode now.  That's
+	 ok, since we want to pun this all the way back to an integer.  */
+      operand = simplify_subreg (imode, operand, GET_MODE (operand), 0);
       gcc_assert (operand != NULL);
       mode = imode;
     }

gcc/tree-eh.c

@@ -1920,7 +1920,12 @@ tree_could_throw_p (tree t)
 bool
 tree_can_throw_internal (tree stmt)
 {
-  int region_nr = lookup_stmt_eh_region (stmt);
+  int region_nr;
+
+  if (TREE_CODE (stmt) == RESX_EXPR)
+    region_nr = TREE_INT_CST_LOW (TREE_OPERAND (stmt, 0));
+  else
+    region_nr = lookup_stmt_eh_region (stmt);
   if (region_nr < 0)
     return false;
   return can_throw_internal_1 (region_nr);
@@ -1931,7 +1936,8 @@ tree_can_throw_external (tree stmt)
 {
   int region_nr = lookup_stmt_eh_region (stmt);
   if (region_nr < 0)
-    return false;
+    return tree_could_throw_p (stmt);
+  else
     return can_throw_external_1 (region_nr);
 }