OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
127,253 Commits 63 Branches 184 Tags 3.1 GiB
4afb594c57
Commit Graph

13 Commits

Author SHA1 Message Date
Torvald Riegel
bec9ec3fc1 Add custom HTM fast path for RTM on x86_64. 
* 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
 2013-08-30 10:33:41 +00:00
Richard Sandiford
75f9527c9b Update copyright in libitm. 
From-SVN: r195697
 2013-02-03 17:46:11 +00:00
Torvald Riegel
64fbcc74a3 Add HTM fastpath and use Intel RTM for it on x86. 
* 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
 2012-11-09 17:04:40 +00:00
Torvald Riegel
31772c9507 libitm: Add multi-lock, write-through TM method. 
libitm/
	* libitm_i.h (GTM::gtm_rwlog_entry): New.
	(GTM::gtm_thread): Add read and write logs.
	(GTM::dispatch_ml_wt): Declare.
	* retry.cc (parse_default_method): Support ml_wt.
	* method-ml.cc: New file.
	* Makefile.am: Add method-ml.cc.
	* Makefile.in: Regenerate.

From-SVN: r184212
 2012-02-14 13:14:27 +00:00
Torvald Riegel
07b6642b93 libitm: Filter out undo writes that overlap with the libitm stack. 
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
 2012-01-13 23:45:06 +00:00
Richard Henderson
8377e5e546 libitm_i.h (_Unwind_DeleteException): Declare weak. 
* libitm_i.h (_Unwind_DeleteException): Declare weak.
	* eh_cpp.cc (_Unwind_DeleteException): Define for
	!HAVE_ELF_STYLE_WEAKREF.

From-SVN: r183049
 2012-01-09 19:16:07 -08:00
Torvald Riegel
11f30bb0e4 libitm: Optimize undo log. 
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
 2012-01-08 14:13:49 +00:00
Torvald Riegel
610e390135 libitm: Fix privatization safety during upgrades to serial mode. 
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
 2011-12-24 01:42:35 +00:00
Richard Henderson
36cfbee133 libitm: Conversion to c++11 atomics. 
* 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
 2011-12-13 11:11:25 -08:00
Richard Henderson
062f93f255 Swap the action and jmpbuf arguments to GTM_longjmp 
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
 2011-11-30 14:29:33 -08:00
Iain Sandoe
0b41ebef72 sjlj.S (CONCAT1, [...]): Respond to __USER_LABEL_PREFIX__ for targets that use it. 
libitm:

	* config/x86/sjlj.S (CONCAT1, CONCAT2, SYM): Respond to
	__USER_LABEL_PREFIX__ for targets that use it.
	TYPE, SIZE, HIDDEN): New macros to assist on non-elf targets.
	(_ITM_beginTransaction): Use SYM, TYPE, SIZE macros to assist
	in portability to non-elf targets.
	(GTM_longjmp): LIkewise.
	* libitm_i.h (begin_transaction): Apply __USER_LABEL_PREFIX__
	where required.

From-SVN: r181612
 2011-11-22 09:57:19 +00:00
Richard Henderson
79b1edb6b5 libitm: Remove unused code. 
In particular, unused code that's presenting portability problems.

From-SVN: r181241
 2011-11-09 14:54:55 -08:00
Aldy Hernandez
0a35513e4e Merge from transactional-memory branch. 
From-SVN: r181154
 2011-11-08 11:13:41 +00:00