This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
[PATCH] Fix PR target/65730
- From: Max Filippov <jcmvbkbc at gmail dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Sterling Augustine <augustine dot sterling at gmail dot com>, Richard Henderson <rth at redhat dot com>, Max Filippov <jcmvbkbc at gmail dot com>
- Date: Wed, 20 May 2015 06:31:59 +0300
- Subject: [PATCH] Fix PR target/65730
- Authentication-results: sourceware.org; auth=none
2015-05-20 Max Filippov <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/xtensa.c (init_alignment_context): Replace MULT
by BITS_PER_UNIT with ASHIFT by exact_log2 (BITS_PER_UNIT).
---
gcc/config/xtensa/xtensa.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
index eb039ba..7296e36 100644
--- a/gcc/config/xtensa/xtensa.c
+++ b/gcc/config/xtensa/xtensa.c
@@ -1461,8 +1461,9 @@ init_alignment_context (struct alignment_context *ac, rtx mem)
if (ac->shift != NULL_RTX)
{
/* Shift is the byte count, but we need the bitcount. */
- ac->shift = expand_simple_binop (SImode, MULT, ac->shift,
- GEN_INT (BITS_PER_UNIT),
+ gcc_assert (exact_log2 (BITS_PER_UNIT) >= 0);
+ ac->shift = expand_simple_binop (SImode, ASHIFT, ac->shift,
+ GEN_INT (exact_log2 (BITS_PER_UNIT)),
NULL_RTX, 1, OPTAB_DIRECT);
ac->modemask = expand_simple_binop (SImode, ASHIFT,
GEN_INT (GET_MODE_MASK (mode)),
--
1.8.1.4