re PR middle-end/23831 (ICE in immed_double_const with vectorized multipication)

	PR middle-end/23831
	* simplify-rtx.c (simplify_immed_subreg) [MODE_INT]: Skip
	simplification if elem_bitsize > 2 * HOST_BITS_PER_WIDE_INT.

From-SVN: r104650

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5654d3df2bff58e4386a2bf3344b35e94cf6bd60..2d94072f915d70c6498bead0de31244a57927829 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-09-26  Uros Bizjak  <uros@kss-loka.si>
+
+       PR middle-end/23831
+       * simplify-rtx.c (simplify_immed_subreg) [MODE_INT]: Skip
+       simplification if elem_bitsize > 2 * HOST_BITS_PER_WIDE_INT.
+
 2005-09-26    Fariborz Jahanian <fjahanian@apple.com>
 
         * combine.c (make_extraction): Check for valid use of subreg.

diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index 1b99677fdb5fa6aef34d9e9cf33d695c4528d06a..44a1660e6882477101a18beb76058ed2924f20b1 100644 (file)
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -3743,8 +3743,10 @@ simplify_immed_subreg (enum machine_mode outermode, rtx op,
               know why.  */
            if (elem_bitsize <= HOST_BITS_PER_WIDE_INT)
              elems[elem] = gen_int_mode (lo, outer_submode);
-           else
+           else if (elem_bitsize <= 2 * HOST_BITS_PER_WIDE_INT)
              elems[elem] = immed_double_const (lo, hi, outer_submode);
+           else
+             return NULL_RTX;
          }
          break;