package/gcc/4.8.5/111-pr65730.patch

   1 From b9a7775674d91c7af8043a83211ffeaa576327d7 Mon Sep 17 00:00:00 2001
   2 From: Max Filippov <jcmvbkbc@gmail.com>
   3 Date: Fri, 10 Apr 2015 17:46:30 +0300
   4 Subject: [PATCH] Fix PR target/65730
   5
   6 2015-05-20  Max Filippov  <jcmvbkbc@gmail.com>
   7 gcc/
   8         * config/xtensa/xtensa.c (init_alignment_context): Replace MULT
   9         by BITS_PER_UNIT with ASHIFT by exact_log2 (BITS_PER_UNIT).
  10
  11 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
  12 ---
  13 Backported from: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223452
  14 Changes to ChangeLog are dropped.
  15
  16  gcc/config/xtensa/xtensa.c | 5 +++--
  17  1 file changed, 3 insertions(+), 2 deletions(-)
  18
  19 diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
  20 index eb039ba..7296e36 100644
  21 --- a/gcc/config/xtensa/xtensa.c
  22 +++ b/gcc/config/xtensa/xtensa.c
  23 @@ -1461,8 +1461,9 @@ init_alignment_context (struct alignment_context *ac, rtx mem)
  24    if (ac->shift != NULL_RTX)
  25      {
  26        /* Shift is the byte count, but we need the bitcount.  */
  27 -      ac->shift = expand_simple_binop (SImode, MULT, ac->shift,
  28 -                                      GEN_INT (BITS_PER_UNIT),
  29 +      gcc_assert (exact_log2 (BITS_PER_UNIT) >= 0);
  30 +      ac->shift = expand_simple_binop (SImode, ASHIFT, ac->shift,
  31 +                                      GEN_INT (exact_log2 (BITS_PER_UNIT)),
  32                                        NULL_RTX, 1, OPTAB_DIRECT);
  33        ac->modemask = expand_simple_binop (SImode, ASHIFT,
  34                                           GEN_INT (GET_MODE_MASK (mode)),
  35 --
  36 1.8.1.4
  37