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2022-01-03Update copyright years.Jakub Jelinek1-1/+1
2021-01-04Update copyright years.Jakub Jelinek1-1/+1
2020-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r279813
2019-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r267494
2018-05-18PR c++/58407 - deprecated implicit copy ops.Jason Merrill1-0/+5
gcc/c-family/ * c.opt (Wdeprecated-copy): New flag. gcc/cp/ * call.c (build_over_call): Warn about deprecated trivial fns. * class.c (classtype_has_user_copy_or_dtor): New. (type_build_ctor_call): Check TREE_DEPRECATED. (type_build_dtor_call): Likewise. * decl2.c (cp_warn_deprecated_use): Move from tree.c. Add checks. Return bool. Handle -Wdeprecated-copy. (mark_used): Use it. * decl.c (grokdeclarator): Remove redundant checks. * typeck2.c (build_functional_cast): Likewise. * method.c (lazily_declare_fn): Mark deprecated copy ops. * init.c (build_aggr_init): Only set TREE_USED if there are side-effects. libitm/ * beginend.cc (save): Disable -Werror=deprecated-copy. From-SVN: r260381
2018-01-03Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r256169
2017-06-15PR c++/80560 - warn on undefined memory operations involving non-trivial typesMartin Sebor1-3/+3
gcc/c-family/ChangeLog: PR c++/80560 * c.opt (-Wclass-memaccess): New option. gcc/cp/ChangeLog: PR c++/80560 * call.c (first_non_public_field, maybe_warn_class_memaccess): New functions. (has_trivial_copy_assign_p, has_trivial_copy_p): Ditto. (build_cxx_call): Call maybe_warn_class_memaccess. gcc/ChangeLog: PR c++/80560 * dumpfile.c (dump_register): Avoid calling memset to initialize a class with a default ctor. * gcc.c (struct compiler): Remove const qualification. * genattrtab.c (gen_insn_reserv): Replace memset with initialization. * hash-table.h: Ditto. * ipa-cp.c (allocate_and_init_ipcp_value): Replace memset with assignment. * ipa-prop.c (ipa_free_edge_args_substructures): Ditto. * omp-low.c (lower_omp_ordered_clauses): Replace memset with default ctor. * params.h (struct param_info): Make struct members non-const. * tree-switch-conversion.c (emit_case_bit_tests): Replace memset with default initialization. * vec.h (vec_copy_construct, vec_default_construct): New helper functions. (vec<T>::copy, vec<T>::splice, vec<T>::reserve): Replace memcpy with vec_copy_construct. (vect<T>::quick_grow_cleared): Replace memset with default ctor. (vect<T>::vec_safe_grow_cleared, vec_safe_grow_cleared): Same. * doc/invoke.texi (-Wclass-memaccess): Document. libcpp/ChangeLog: PR c++/80560 * line-map.c (line_maps::~line_maps): Avoid calling htab_delete with a null pointer. (linemap_init): Avoid calling memset on an object of a non-trivial type. libitm/ChangeLog: PR c++/80560 * beginend.cc (GTM::gtm_thread::rollback): Avoid calling memset on an object of a non-trivial type. (GTM::gtm_transaction_cp::commit): Use assignment instead of memcpy to copy an object. * method-ml.cc (orec_iterator::reinit): Avoid -Wclass-memaccess. gcc/testsuite/ChangeLog: PR c++/80560 * g++.dg/Wclass-memaccess.C: New test. From-SVN: r249234
2017-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r243994
2016-03-03libitm: Introduce target macro TARGET_BEGIN_TRANSACTION_ATTRIBUTE.Dominik Vogt1-0/+6
The attached patch adds the a target specific attribute via the new target macro TARGET_BEGIN_TRANSACTION_ATTRIBUTE to the function begin_transaction(). S/390 uses this to set the soft-float target attribute which is needed to fix a crash with -m31. As there seems to be no place in libitm to document internal macros like USE_HTM_FASTPATH or the new macro, I've put the documentation in a comment where the macro is used. 2016-03-03 Dominik Vogt <vogt@linux.vnet.ibm.com> * config/s390/target.h (TARGET_BEGIN_TRANSACTION_ATTRIBUTE): Define function attribute to disable floating point in begin_transaction() on S/390. * beginend.cc (begin_transaction): Use TARGET_BEGIN_TRANSACTION_ATTRIBUTE. From-SVN: r233929
2016-01-22libitm: Fix HTM fastpath.Torvald Riegel1-16/+31
* beginend.cc (GTM::gtm_thread::serial_lock): Put on cacheline boundary. (htm_fastpath): Remove. (gtm_thread::begin_transaction): Fix HTM fastpath. (_ITM_commitTransaction): Adapt. (_ITM_commitTransactionEH): Adapt. * libitm/config/linux/rwlock.h (gtm_rwlock): Add htm_fastpath member and accessors. * libitm/config/posix/rwlock.h (gtm_rwlock): Likewise. * libitm/config/posix/rwlock.cc (gtm_rwlock::gtm_rwlock): Adapt. * libitm/config/x86/sjlj.S (_ITM_beginTransaction): Fix HTM fastpath. * libitm/libitm_i.h (htm_fastpath): Remove declaration. * libitm/method-serial.cc (htm_mg): Adapt. (gtm_thread::serialirr_mode): Adapt. * libitm/query.cc (_ITM_inTransaction, _ITM_getTransactionId): Adapt. From-SVN: r232735
2016-01-13libitm: Fix seq-cst MOs/fences in rwlock.Torvald Riegel1-2/+4
From-SVN: r232353
2016-01-13libitm: Fix privatization safety interaction with serial mode.Torvald Riegel1-5/+29
From-SVN: r232322
2016-01-12libitm: Remove dead code and data.Torvald Riegel1-3/+0
From-SVN: r232275
2016-01-04Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r232055
2015-11-20Support __cxa_free_exception and fix exception handling.Torvald Riegel1-2/+8
gcc/cp/ * except.c (do_free_exception): Use transactional wrapper. libitm/ * testsuite/libitm.c++/eh-5.C: New. * libitm.h (_ITM_cxa_free_exception): New. * libitm.map (_ITM_cxa_free_exception): Add it. * libitm.texi: Update ABI docs. * libitm_i.h (gtm_transaction_cp::cxa_unthrown): Remove. (gtm_transaction_cp::cxa_uncaught_count): Add. (gtm_thread::cxa_unthrown): Remove. (gtm_thread::cxa_uncaught_count_ptr): Add. (gtm_thread::cxa_uncaught_count): Add. (gtm_thread::drop_references_allocations): Rename to... (gtm_thread::discard_allocation): ... this and adapt. (gtm_thread::init_cpp_exceptions): New. * beginend.cc (gtm_thread::gtm_thread): Adapt EH handling. (gtm_thread::begin_transaction): Likewise. (gtm_transaction_cp::save): Likewise. (gtm_thread::trycommit): Likewise. * eh_cpp.cc: Add overview comments. (__cxa_eh_globals, __cxa_get_globals, __cxa_free_exception): Declare. (free_any_exception, _ITM_cxa_free_exception): New. (gtm_thread::init_cpp_exceptions): Define. (_ITM_cxa_allocate_exception, _ITM_cxa_throw): Adapt. (_ITM_cxa_begin_catch, _ITM_cxa_end_catch): Likewise. (gtm_thread::revert_cpp_exceptions): Likewise. From-SVN: r230634
2015-01-05Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r219188
2014-01-02Update copyright years in libitm/Richard Sandiford1-1/+1
From-SVN: r206298
2013-08-30Add custom HTM fast path for RTM on x86_64.Torvald Riegel1-1/+45
* libitm_i.h (gtm_thread): Assign an asm name to serial_lock. (htm_fastpath): Assign an asm name. * libitm.h (_ITM_codeProperties): Add non-ABI flags used by custom HTM fast paths. (_ITM_actions): Likewise. * config/x86/target.h (HTM_CUSTOM_FASTPATH): Enable custom fastpath on x86_64. * config/x86/sjlj.S (_ITM_beginTransaction): Add custom HTM fast path. * config/posix/rwlock.h (gtm_rwlock): Update comments. Move summary field to the start of the structure. * config/linux/rwlock.h (gtm_rwlock): Update comments. * beginend.cc (gtm_thread::begin_transaction): Add retry policy handling for custom HTM fast paths. From-SVN: r202101
2013-06-20libitm: Fix handling of reentrancy in the HTM fastpath.Torvald Riegel1-0/+10
PR libitm/57643 * beginend.cc (gtm_thread::begin_transaction): Handle reentrancy in the HTM fastpath. From-SVN: r200250
2013-02-03Update copyright in libitm.Richard Sandiford1-1/+1
From-SVN: r195697
2012-11-09Add HTM fastpath and use Intel RTM for it on x86.Torvald Riegel1-0/+85
* beginend.cc (htm_fastpath): New. (gtm_thread::begin_transaction, _ITM_commitTransaction, _ITM_commitTransactionEH): Add HTM fastpath handling. * config/linux/rwlock.h (gtm_rwlock.is_write_locked): New. * config/posix/rwlock.h (gtm_rwlock.is_write_locked): New. * config/x86/target.h (htm_available, htm_init, htm_begin_success, htm_begin, htm_commit, htm_abort, htm_abort_should_retry): New. * configure.tgt: Add -mrtm to XCFLAGS. * method-serial.cc (htm_mg, o_htm_mg, htm_dispatch, dispatch_htm): New. (gtm_thread::serialirr_mode): Add HTM fastpath handling. * libitm_i.h (htm_fastpath, dispatch_htm): Declare. * retry.cc (parse_default_method): Add HTM method parsing. (gtm_thread::number_of_threads_changed): Use HTM by default if available. From-SVN: r193369
2012-02-20libitm: Fix race condition in dispatch choice at transaction begin.Torvald Riegel1-10/+0
libitm/ * beginend.cc (GTM::gtm_thread::begin_transaction): Move serial lock acquisition to ... * retry.cc (GTM::gtm_thread::decide_begin_dispatch): ... here. (default_dispatch): Make atomic. (GTM::gtm_thread::set_default_dispatch): Access atomically. (GTM::gtm_thread::decide_retry_strategy): Access atomically and use decide_begin_dispatch() if default_dispatch might have changed. (GTM::gtm_thread::number_of_threads_changed): Initialize default_dispatch here. From-SVN: r184392
2012-01-13libitm: Filter out undo writes that overlap with the libitm stack.Torvald Riegel1-1/+1
PR libitm/51855 * config/generic/tls.h (GTM::mask_stack_top): New. (GTM::mask_stack_bottom): Declare. * config/generic/tls.c (GTM::mask_stack_bottom): New. * local.cc (gtm_undolog::rollback): Filter out any updates that overlap the libitm stack. Add current transaction as parameter. * libitm_i.h (GTM::gtm_undolog::rollback): Adapt. * beginend.cc (GTM::gtm_thread::rollback): Adapt. * testsuite/libitm.c/stackundo.c: New test. From-SVN: r183172
2012-01-08libitm: Optimize undo log.Torvald Riegel1-3/+3
libitm/ * local.cc (GTM_LB): Use GTM::gtm_undolog. (GTM::gtm_thread::drop_references_undolog): Remove. (GTM::gtm_thread::commit_undolog, GTM::gtm_thread::rollback_undolog): Move to ... * libitm_i.h (GTM::gtm_undolog): ...here. New. (GTM::gtm_undolog_entry): Remove. (GTM::gtm_thread): Adapt. * beginend.cc (GTM::gtm_thread::rollback): Adapt. (GTM::gtm_thread::trycommit): Adapt. * method-serial.cc (serial_dispatch::log): Adapt. * method-gl.cc (gl_wt_dispatch::pre_write): Adapt. (gl_wt_dispatch::store): Fix likely/unlikely. * containers.h (GTM::vector::resize): Add additional_capacity parameter and handle it. (GTM::vector::resize_noinline): New/adapt. (GTM::vector::push): New. From-SVN: r182992
2011-12-24libitm: Don't enforce privatization safety if already in serial mode.Torvald Riegel1-1/+6
libitm/ * beginend.cc (GTM::gtm_thread::trycommit): Don't enforce privatization safety if already in serial mode. From-SVN: r182676
2011-12-24libitm: Fix privatization safety during upgrades to serial mode.Torvald Riegel1-1/+9
libitm/ * beginend.cc (GTM::gtm_thread::restart): Add and handle finish_serial_upgrade parameter. * libitm.h (GTM::gtm_thread::restart): Adapt declaration. * config/linux/rwlock.cc (GTM::gtm_rwlock::write_lock_generic): Don't unset reader flag. (GTM::gtm_rwlock::write_upgrade_finish): New. * config/posix/rwlock.cc: Same. * config/linux/rwlock.h (GTM::gtm_rwlock::write_upgrade_finish): Declare. * config/posix/rwlock.h: Same. * method-serial.cc (GTM::gtm_thread::serialirr_mode): Unset reader flag after commit or after rollback when restarting. From-SVN: r182675
2011-12-24libitm: Fixed conversion to C++11 atomics.Torvald Riegel1-5/+19
libitm/ * beginend.cc (GTM::gtm_thread::begin_transaction): Add comment. (GTM::gtm_thread::try_commit): Changed memory order. * config/linux/alpha/futex_bits.h (sys_futex0): Take atomic int as parameter. * config/linux/x86/futex_bits.h (sys_futex0): Same. * config/linux/sh/futex_bits.h (sys_futex0): Same. * config/linux/futex_bits.h (sys_futex0): Same. * config/linux/futex.cc (futex_wait, futex_wake): Same. * config/linux/futex.h (futex_wait, futex_wake): Same. * config/linux/rwlock.h (gtm_rwlock::writers, gtm_rwlock::writer_readers, gtm_rwlock::readers): Change to atomic ints. * config/linux/rwlock.cc (gtm_rwlock::read_lock, gtm_rwlock::write_lock_generic, gtm_rwlock::read_unlock, gtm_rwlock::write_unlock): Fix memory orders and fences. * config/posix/rwlock.cc (gtm_rwlock::read_lock, gtm_rwlock::write_lock_generic, gtm_rwlock::read_unlock, gtm_rwlock::write_unlock): Same. * config/linux/rwlock.h (gtm_rwlock::summary): Change to atomic int. * method-gl.cc (gl_mg::init, gl_wt_dispatch::memtransfer_static, gl_wt_dispatch::memset_static, gl_wt_dispatch::begin_or_restart): Add comments. (gl_wt_dispatch::pre_write, gl_wt_dispatch::validate, gl_wt_dispatch::load, gl_wt_dispatch::store, gl_wt_dispatch::try_commit, gl_wt_dispatch::rollback): Fix memory orders and fences. Add comments. From-SVN: r182674
2011-12-13libitm: Conversion to c++11 atomics.Richard Henderson1-11/+12
* local_atomic: New file. * libitm_i.h: Include it. (gtm_thread::shared_state): Use atomic template. * beginend.cc (GTM::gtm_clock): Use atomic template. (global_tid): Use atomic template if 64-bit atomics available. (gtm_thread::gtm_thread): Update shared_state access. (gtm_thread::trycommit): Likewise. (choose_code_path): Update global_tid access. * method-gl.cc (gl_mg::orec): Use atomic template. Update all users. * stmlock.h (GTM::gtm_clock): Use atomic template. (gtm_get_clock, gtm_inc_clock): Update accesses. * config/linux/rwlock.cc (gtm_rwlock::read_lock): Remove redundant __sync_synchronize after atomic shared_state access. * config/posix/rwlock.cc (gtm_rwlock::read_lock): Likewise. (gtm_rwlock::write_lock_generic): Likewise. (gtm_rwlock::read_unlock): Likewise. * config/alpha/target.h (atomic_read_barrier): Remove. (atomic_write_barrier): Remove. * config/x86/target.h (atomic_read_barrier): Remove. (atomic_write_barrier): Remove. From-SVN: r182294
2011-11-30Swap the action and jmpbuf arguments to GTM_longjmpRichard Henderson1-6/+6
On several ABIs, the first register parameter is the same as the return value register. Moving the action parameter first avoids the need for register shuffling on these targets. * libitm_i.h (GTM_longjmp): Swap first and second arguments. * beginend.c (_ITM_abortTransaction): Update to match. (GTM::gtm_thread::restart): Likewise. * config/alpha/sjlj.S (GTM_longjmp): Likewise. * config/x86/sjlj.S (GTM_longjmp): Likewise. From-SVN: r181863
2011-11-08Merge from transactional-memory branch.Aldy Hernandez1-0/+536
From-SVN: r181154
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