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| author | Max Filippov <jcmvbkbc@gmail.com> | 2015-05-20 18:56:14 +0000 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gcc.gnu.org> | 2015-05-20 18:56:14 +0000 |
| commit | 91767ed11af18ab39fc7a85850ff4908036e416b (patch) | |
| tree | 3dfe36f601c5749c06ae110f47e03b2d0782edb6 /gcc | |
| parent | eb3243e854017b4db99c2e29f9f440ea1630d98b (diff) | |
| download | gcc-91767ed11af18ab39fc7a85850ff4908036e416b.zip gcc-91767ed11af18ab39fc7a85850ff4908036e416b.tar.gz gcc-91767ed11af18ab39fc7a85850ff4908036e416b.tar.bz2 | |
re PR target/65730 (xtensa: ICE in libstdc++-v3/include/bits/atomic_base.h: In function ‘bool std::atomic_flag_test_and_set_explicit(std::__atomic_flag_base*, std::memory_order)’)
Fix PR target/65730
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).
From-SVN: r223452
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/xtensa/xtensa.c | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 27435c6..36b8e05 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2015-05-20 Max Filippov <jcmvbkbc@gmail.com> + + * config/xtensa/xtensa.c (init_alignment_context): Replace MULT + by BITS_PER_UNIT with ASHIFT by exact_log2 (BITS_PER_UNIT). + 2015-05-20 Jeff Law <law@redhat.com> * tree-ssa-threadupdate.c (mark_threaded_blocks): Properly diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c index 1e8eceb..1f71117 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)), |