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| author | Richard Henderson <rth@redhat.com> | 2011-11-16 20:44:27 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2011-11-16 20:44:27 -0800 |
| commit | 4eace304b85ebbc5d0dc97dfffc1cb39ec41195c (patch) | |
| tree | bafca9114028fee3937d025053f4e61baa2858cb /gcc/config/alpha | |
| parent | 00449933e6832a4a21de8b0f8dd2c8888c636222 (diff) | |
| download | gcc-4eace304b85ebbc5d0dc97dfffc1cb39ec41195c.zip gcc-4eace304b85ebbc5d0dc97dfffc1cb39ec41195c.tar.gz gcc-4eace304b85ebbc5d0dc97dfffc1cb39ec41195c.tar.bz2 | |
Copy ALIAS_SET_MEMORY_BARRIER when creating a new MEM for atomic ops.
* config/alpha/alpha.c (alpha_split_compare_and_swap_12): Copy
ALIAS_SET_MEMORY_BARRIER when creating a new memory.
(alpha_split_atomic_exchange_12): Likewise.
* config/rs6000/rs6000.c (rs6000_adjust_atomic_subword): Likewise.
From-SVN: r181436
Diffstat (limited to 'gcc/config/alpha')
| -rw-r--r-- | gcc/config/alpha/alpha.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index 78717f9..e970227 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -4444,6 +4444,8 @@ alpha_split_compare_and_swap_12 (rtx operands[]) mem = gen_rtx_MEM (DImode, align); MEM_VOLATILE_P (mem) = MEM_VOLATILE_P (orig_mem); + if (MEM_ALIAS_SET (orig_mem) == ALIAS_SET_MEMORY_BARRIER) + set_mem_alias_set (mem, ALIAS_SET_MEMORY_BARRIER); alpha_pre_atomic_barrier (mod_s); @@ -4583,6 +4585,8 @@ alpha_split_atomic_exchange_12 (rtx operands[]) mem = gen_rtx_MEM (DImode, align); MEM_VOLATILE_P (mem) = MEM_VOLATILE_P (orig_mem); + if (MEM_ALIAS_SET (orig_mem) == ALIAS_SET_MEMORY_BARRIER) + set_mem_alias_set (mem, ALIAS_SET_MEMORY_BARRIER); alpha_pre_atomic_barrier (model); |