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
@@ -644,7 +650,7 @@
 	decode_addr_const): Likewise.
 
 2005-04-21 Alan Modra  <amodra@bigpond.net.au>
-           Fariborz Jahanian <fjahanian@apple.com>
+	   Fariborz Jahanian <fjahanian@apple.com>
 
 	* config/rs6000/rs6000.c (rs6000_arg_partial_bytes): Fix size of
 	portion of argument passed in fpr.
@@ -1122,7 +1128,7 @@
 	* fold-const (fold_binary):  Fold ~X ^ ~ Y to X ^ Y.
 
 2005-04-20  Michael Pogue  <michael.pogue@sun.com>
-            Joseph S. Myers  <joseph@codesourcery.com>
+	    Joseph S. Myers  <joseph@codesourcery.com>
 
 	* c.opt (Wint-to-pointer-cast, Wpointer-to-int-cast): New options.
 	* c-typeck.c (build_c_cast): Check these options.

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);
@@ -1931,8 +1936,9 @@ tree_can_throw_external (tree stmt)
 {
   int region_nr = lookup_stmt_eh_region (stmt);
   if (region_nr < 0)
-    return false;
-  return can_throw_external_1 (region_nr);
+    return tree_could_throw_p (stmt);
+  else
+    return can_throw_external_1 (region_nr);
 }
 
 bool