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author | Andrew MacLeod <amacleod@redhat.com> | 2015-05-12 20:01:47 +0000 |
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committer | Andrew Macleod <amacleod@gcc.gnu.org> | 2015-05-12 20:01:47 +0000 |
commit | 46b35980b831a980f762753b64c83e1ab8eac880 (patch) | |
tree | 46ecdae55c6167da9fe60411b19d39051ad5e4c1 /gcc/config/aarch64/atomics.md | |
parent | e7a677ca1a53221276c0b382811c0351d381b35a (diff) | |
download | gcc-46b35980b831a980f762753b64c83e1ab8eac880.zip gcc-46b35980b831a980f762753b64c83e1ab8eac880.tar.gz gcc-46b35980b831a980f762753b64c83e1ab8eac880.tar.bz2 |
re PR target/65697 (__atomic memory barriers not strong enough for __sync builtins)
2015-05-12 Andrew MacLeod <amacleod@redhat.com>
PR target/65697
* coretypes.h (MEMMODEL_SYNC, MEMMODEL_BASE_MASK): New macros.
(enum memmodel): Add SYNC_{ACQUIRE,RELEASE,SEQ_CST}.
* tree.h (memmodel_from_int, memmodel_base, is_mm_relaxed,
is_mm_consume,is_mm_acquire, is_mm_release, is_mm_acq_rel,
is_mm_seq_cst, is_mm_sync): New accessor functions.
* builtins.c (expand_builtin_sync_operation,
expand_builtin_compare_and_swap): Use MEMMODEL_SYNC_SEQ_CST.
(expand_builtin_sync_lock_release): Use MEMMODEL_SYNC_RELEASE.
(get_memmodel, expand_builtin_atomic_compare_exchange,
expand_builtin_atomic_load, expand_builtin_atomic_store,
expand_builtin_atomic_clear): Use new accessor routines.
(expand_builtin_sync_synchronize): Use MEMMODEL_SYNC_SEQ_CST.
* optabs.c (expand_compare_and_swap_loop): Use MEMMODEL_SYNC_SEQ_CST.
(maybe_emit_sync_lock_test_and_set): Use new accessors and
MEMMODEL_SYNC_ACQUIRE.
(expand_sync_lock_test_and_set): Use MEMMODEL_SYNC_ACQUIRE.
(expand_mem_thread_fence, expand_mem_signal_fence, expand_atomic_load,
expand_atomic_store): Use new accessors.
* emit-rtl.c (need_atomic_barrier_p): Add additional enum cases.
* tsan.c (instrument_builtin_call): Update check for memory model beyond
final enum to use MEMMODEL_LAST.
* c-family/c-common.c: Use new accessor for memmodel_base.
* config/aarch64/aarch64.c (aarch64_expand_compare_and_swap): Use new
accessors.
* config/aarch64/atomics.md (atomic_load<mode>,atomic_store<mode>,
arch64_load_exclusive<mode>, aarch64_store_exclusive<mode>,
mem_thread_fence, *dmb): Likewise.
* config/alpha/alpha.c (alpha_split_compare_and_swap,
alpha_split_compare_and_swap_12): Likewise.
* config/arm/arm.c (arm_expand_compare_and_swap,
arm_split_compare_and_swap, arm_split_atomic_op): Likewise.
* config/arm/sync.md (atomic_load<mode>, atomic_store<mode>,
atomic_loaddi): Likewise.
* config/i386/i386.c (ix86_destroy_cost_data, ix86_memmodel_check):
Likewise.
* config/i386/sync.md (mem_thread_fence, atomic_store<mode>): Likewise.
* config/ia64/ia64.c (ia64_expand_atomic_op): Add new memmodel cases and
use new accessors.
* config/ia64/sync.md (mem_thread_fence, atomic_load<mode>,
atomic_store<mode>, atomic_compare_and_swap<mode>,
atomic_exchange<mode>): Use new accessors.
* config/mips/mips.c (mips_process_sync_loop): Likewise.
* config/pa/pa.md (atomic_loaddi, atomic_storedi): Likewise.
* config/rs6000/rs6000.c (rs6000_pre_atomic_barrier,
rs6000_post_atomic_barrier): Add new cases.
(rs6000_expand_atomic_compare_and_swap): Use new accessors.
* config/rs6000/sync.md (mem_thread_fence): Add new cases.
(atomic_load<mode>): Add new cases and use new accessors.
(store_quadpti): Add new cases.
* config/s390/s390.md (mem_thread_fence, atomic_store<mode>): Use new
accessors.
* config/sparc/sparc.c (sparc_emit_membar_for_model): Use new accessors.
* doc/extend.texi: Update docs to indicate 16 bits are used for memory
model, not 8.
From-SVN: r223096
Diffstat (limited to 'gcc/config/aarch64/atomics.md')
-rw-r--r-- | gcc/config/aarch64/atomics.md | 38 |
1 files changed, 14 insertions, 24 deletions
diff --git a/gcc/config/aarch64/atomics.md b/gcc/config/aarch64/atomics.md index 939a11e..1a38ac0 100644 --- a/gcc/config/aarch64/atomics.md +++ b/gcc/config/aarch64/atomics.md @@ -260,10 +260,8 @@ UNSPECV_LDA))] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[2]); - if (model == MEMMODEL_RELAXED - || model == MEMMODEL_CONSUME - || model == MEMMODEL_RELEASE) + enum memmodel model = memmodel_from_int (INTVAL (operands[2])); + if (is_mm_relaxed (model) || is_mm_consume (model) || is_mm_release (model)) return "ldr<atomic_sfx>\t%<w>0, %1"; else return "ldar<atomic_sfx>\t%<w>0, %1"; @@ -278,10 +276,8 @@ UNSPECV_STL))] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[2]); - if (model == MEMMODEL_RELAXED - || model == MEMMODEL_CONSUME - || model == MEMMODEL_ACQUIRE) + enum memmodel model = memmodel_from_int (INTVAL (operands[2])); + if (is_mm_relaxed (model) || is_mm_consume (model) || is_mm_acquire (model)) return "str<atomic_sfx>\t%<w>1, %0"; else return "stlr<atomic_sfx>\t%<w>1, %0"; @@ -297,10 +293,8 @@ UNSPECV_LX)))] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[2]); - if (model == MEMMODEL_RELAXED - || model == MEMMODEL_CONSUME - || model == MEMMODEL_RELEASE) + enum memmodel model = memmodel_from_int (INTVAL (operands[2])); + if (is_mm_relaxed (model) || is_mm_consume (model) || is_mm_release (model)) return "ldxr<atomic_sfx>\t%w0, %1"; else return "ldaxr<atomic_sfx>\t%w0, %1"; @@ -315,10 +309,8 @@ UNSPECV_LX))] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[2]); - if (model == MEMMODEL_RELAXED - || model == MEMMODEL_CONSUME - || model == MEMMODEL_RELEASE) + enum memmodel model = memmodel_from_int (INTVAL (operands[2])); + if (is_mm_relaxed (model) || is_mm_consume (model) || is_mm_release (model)) return "ldxr\t%<w>0, %1"; else return "ldaxr\t%<w>0, %1"; @@ -335,10 +327,8 @@ UNSPECV_SX))] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[3]); - if (model == MEMMODEL_RELAXED - || model == MEMMODEL_CONSUME - || model == MEMMODEL_ACQUIRE) + enum memmodel model = memmodel_from_int (INTVAL (operands[3])); + if (is_mm_relaxed (model) || is_mm_consume (model) || is_mm_acquire (model)) return "stxr<atomic_sfx>\t%w0, %<w>2, %1"; else return "stlxr<atomic_sfx>\t%w0, %<w>2, %1"; @@ -349,8 +339,8 @@ [(match_operand:SI 0 "const_int_operand" "")] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[0]); - if (model != MEMMODEL_RELAXED && model != MEMMODEL_CONSUME) + enum memmodel model = memmodel_from_int (INTVAL (operands[0])); + if (!(is_mm_relaxed (model) || is_mm_consume (model))) emit_insn (gen_dmb (operands[0])); DONE; } @@ -373,8 +363,8 @@ UNSPEC_MB))] "" { - enum memmodel model = (enum memmodel) INTVAL (operands[1]); - if (model == MEMMODEL_ACQUIRE) + enum memmodel model = memmodel_from_int (INTVAL (operands[1])); + if (is_mm_acquire (model)) return "dmb\\tishld"; else return "dmb\\tish"; |