OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
5d66b937e3
gcc/libgfortran/ChangeLog
Janne Blomqvist 0eaee4abb1 Improve PRNG jumping when using threads 
Currently, when a new thread needs to use the RANDOM_NUMBER intrinsic,
the per-thread PRNG state is initialized by copying the master state
and then jumping forwards N*2**128 entries in the stream so that the
PRNG streams for different threads don't alias each other, where N is
the number of threads that have so far initialized the PRNG.

With this patch the master state itself is jumped forwards once each
time a new thread initializes the PRNG, thus obviating the need to
jump through all the N-1 previous streams. Effectively turning an O(N)
algorithm into an O(1) one.

Regtested on x86_64-pc-linux-gnu.

libgfortran/ChangeLog:

2019-09-05  Janne Blomqvist  <jb@gcc.gnu.org>

	* intrinsics/random.c (master_init): Replace with
	master_state.init.
	(njumps): Remove variable.
	(master_state): Make instance of struct prng_state.
	(init_rand_state): When jumping, update the master_state once
	instead of keeping track of how many jumps need to be done.
	(SZU64): Modify to handle new master_state.
	(SZ): Likewise.
	(random_seed_i4): Likewise.
	(random_seed_i8): Likewise.

From-SVN: r275397
2019-09-05 09:59:55 +03:00

347 lines
12 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

2019-09-05 Janne Blomqvist <jb@gcc.gnu.org>
* intrinsics/random.c (master_init): Replace with
master_state.init.
(njumps): Remove variable.
(master_state): Make instance of struct prng_state.
(init_rand_state): When jumping, update the master_state once
instead of keeping track of how many jumps need to be done.
(SZU64): Modify to handle new master_state.
(SZ): Likewise.
(random_seed_i4): Likewise.
(random_seed_i8): Likewise.
2019-08-17 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/68401
* gfortran.map: Add GFORTRAN_10 node, add _gfortran_os_error_at
symbol.
* libgfortran.h (os_error_at): New prototype.
* runtime/error.c (os_error_at): New function.
2019-08-13 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/91414
* intrinsics/random.c (prng_state): Update state struct.
(master_state): Update to match new size.
(get_rand_state): Update to match new PRNG.
(rotl): New function.
(xorshift1024star): Replace with prng_next.
(prng_next): New function.
(jump): Update for new PRNG.
(lcg_parkmiller): Replace with splitmix64.
(splitmix64): New function.
(getosrandom): Fix return value, simplify.
(init_rand_state): Use getosrandom only to get 8 bytes, splitmix64
to fill rest of state.
(random_r4): Update to new function and struct names.
(random_r8): Likewise.
(random_r10): Likewise.
(random_r16): Likewise.
(arandom_r4): Liekwise.
(arandom_r8): Likewise.
(arandom_r10): Likwewise.
(arandom_r16): Likewise.
(xor_keys): Reduce size to match new PRNG.
(random_seed_i4): Update to new function and struct names, remove
special handling of variable p used in previous PRNG.
(random_seed_i8): Likewise.
2019-08-07 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/53796
* io/inquire.c (inquire_via_filename): Set recl to -1 for
unconnected units.
2019-07-21 Thomas König <tkoenig@gcc.gnu.org>
PR libfortran/91030
* io/unix.c (BUFFER_SIZE): Delete.
(BUFFER_FORMATTED_SIZE_DEFAULT): New variable.
(BUFFER_UNFORMATTED_SIZE_DEFAULT): New variable.
(unix_stream): Add buffer_size.
(buf_read): Use s->buffer_size instead of BUFFER_SIZE.
(buf_write): Likewise.
(buf_init): Add argument unformatted. Handle block sizes
for unformatted vs. formatted, using defaults if provided.
(fd_to_stream): Add argument unformatted in call to buf_init.
* libgfortran.h (options_t): Add buffer_size_formatted and
buffer_size_unformatted.
* runtime/environ.c (variable_table): Add
GFORTRAN_UNFORMATTED_BUFFER_SIZE and
GFORTRAN_FORMATTED_BUFFER_SIZE.
2019-06-25 Kwok Cheung Yeung <kcy@codesourcery.com>
Andrew Stubbs <ams@codesourcery.com>
* configure: Regenerate.
* configure.ac (LIBGFOR_MINIMAL): Do not use on AMD GCN.
2019-06-14 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/65921
* runtime/memory.c (SIZE_MAX):Remove macro definition.
(xmallocarray): Use __builtin_mul_overflow.
2019-05-22 Jeff Law <law@redhat.com>
PR fortran/89100
* io/format.c (parse_format_list): set default width when the
IOPARM_DT_DEC_EXT flag is set for i, f and g.
* io/io.h: add default_width_for_integer, default_width_for_float
and default_precision_for_float.
* io/write.c (write_boz): extra parameter giving length of data
corresponding to the type's kind.
(write_b): pass data length as extra parameter in calls to
write_boz.
(write_o): pass data length as extra parameter in calls to
write_boz.
(write_z): pass data length as extra parameter in calls to
write_boz.
(size_from_kind): also set size is default width is set.
* io/write_float.def (build_float_string): new paramter inserted
before result parameter. If default width use values passed
instead of the values in fnode.
(FORMAT_FLOAT): macro modified to check for default width and
calls to build_float_string to pass in default width.
(get_float_string): set width and precision to defaults when
needed.
2019-05-19 Janne Blomqvist <jb@gcc.gnu.org>
PR libfortran/90038
* intrinsics/execute_command_line (sigchld_handler): New function.
(execute_command_line): Install handler for SIGCHLD.
* configure.ac: Check for presence of sigaction and waitpid.
* config.h.in: Regenerated.
* configure: Regenerated.
2019-05-17 Janne Blomqvist <jb@gcc.gnu.org>
PR libfortran/90038
* configure.ac (AC_CHECK_FUNCS_ONCE): Check for posix_spawn.
* intrinsics/execute_command_line (execute_command_line): Use
posix_spawn.
* Makefile.in: Regenerated.
* config.h.in: Regenerated.
* configure: Regenerated.
2019-05-17 Jakub Jelinek <jakub@redhat.com>
PR fortran/54613
* gfortran.map (GFORTRAN_9.2): Export _gfortran_{,m,s}findloc{0,1}_r10.
* Makefile.am (i_findloc0_c): Add $(srcdir)/generated/findloc0_r10.c.
(i_findloc1_c): Add $(srcdir)/generated/findloc1_r10.c.
* Makefile.in: Regenerated.
* generated/findloc0_r10.c: Generated.
* generated/findloc1_r10.c: Generated.
PR fortran/54613
* gfortran.map (GFORTRAN_9.2): New symbol version, export
_gfortran_{,m,s}findloc0_i2 in it.
2019-05-15 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/90461
* io/open.c (new_unit): Don't check if the file is already open
for F2018.
2019-05-02 Jakub Jelinek <jakub@redhat.com>
* Makefile.am (gfor_cdir): Remove $(MULTISUBDIR).
* Makefile.in: Regenerated.
2019-04-14 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89843
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc): Only
return immediately if the source pointer is null. Bring
forward the extraction of the gfc type. Extract the kind so
that the element size can be correctly computed for sections
and components of derived type arrays. Remove the free of the
CFI descriptor since this is now done in trans-expr.c.
(gfc_desc_to_cfi_desc): Only allocate the CFI descriptor if it
is not null.
(CFI_section): Normalise the difference between the upper and
lower bounds by the stride to correctly calculate the extents
of the section.
PR fortran/89846
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc): Use
the stride measure for the gfc span if it is not a multiple
of the element length. Otherwise use the element length.
PR fortran/90022
* runtime/ISO_Fortran_binding.c (CFI_is_contiguous) : Return
1 for true and 0 otherwise to comply with the standard. Correct
the contiguity check for rank 3 and greater by using the stride
measure of the lower dimension rather than the element length.
2019-03-25 John David Anglin <danglin@gcc.gnu.org>
PR libgfortran/79540
* io/write_float.def (build_float_string): Don't copy digits when
ndigits is negative.
2019-03-05 Jakub Jelinek <jakub@redhat.com>
PR libgfortran/89593
* caf/single.c (_gfortran_caf_sendget_by_ref): Cast &temp to
gfc_descriptor_t * to avoid warning.
2019-02-26 Uroš Bizjak <ubizjak@gmail.com>
* io/transfer.c (transfer_array_inner): Do not
cast charlen to index_type.
2019-02-25 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR libfortran/89274
* io/write.c (write_integer): Add width for INTEGER(16).
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
PR fortran/89366
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc) : In the
interchange between character and derived, the character type
was being set incorrectly.
(gfc_desc_to_cfi_desc) : Eliminate the interchange of types in
this function. Do not add the kind and length information to
the type field of structures. Lbounds were incorrectly being
set to zero for allocatable and pointer descriptors. Should
have been non-pointer, non-allocatables that received this
treatment.
2019-01-30 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
Revert:
2016-11-16 Szabolcs Nagy <szabolcs.nagy@arm.com>
PR libfortran/78314
* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.
2019-01-30 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
exception flags before changing trap mode. Optimize to call
feenableexcept and fedisableexcept only once.
2019-01-28 Sebastian Huber <sebastian.huber@embedded-brains.de>
* io/async.c (init_adv_cond): Use __GTHREAD_COND_INIT_FUNCTION().
2019-01-27 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/89020
* io/close.c (st_close): Simplify text of error message to not
presume a specific cause of failure to remove file.
2019-01-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/89020
* io/close.c (st_close): Fix typo.
2019-01-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/89020
* io/close.c (st_close): Generate error if calls to 'remove' return
an error.
2019-01-17 Andrew Stubbs <ams@codesourcery.com>
Kwok Cheung Yeung <kcy@codesourcery.com>
Julian Brown <julian@codesourcery.com>
Tom de Vries <tom@codesourcery.com>
* configure.ac: Use minimal mode for amdgcn.
* configure: Regenerate.
2019-01-13 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/88776
* io/open.c (newunit): Free format buffer if the unit specified is for
stdin, stdout, or stderr.
2019-01-12 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/88776
* io/list_read.c (namelist_read): Use nml_err_ret path on read error
not based on stdin_unit.
2019-01-12 Paul Thomas <pault@gcc.gnu.org>
* ISO_Fortran_binding.h : New file.
* Makefile.am : Include ISO_Fortran_binding.c in the list of
files to compile.
* Makefile.in : Regenerated.
* gfortran.map : Add _gfortran_cfi_desc_to_gfc_desc,
_gfortran_gfc_desc_to_cfi_desc and the CFI API functions.
* runtime/ISO_Fortran_binding.c : New file containing the new
functions added to the map.
2019-01-12 Jakub Jelinek <jakub@redhat.com>
PR libfortran/88807
* m4/minloc0.m4: Reindent to avoid -Wmisleading-indentation warnings.
* generated/minloc0_4_i1.c: Regenerated.
* generated/minloc0_4_i2.c: Regenerated.
* generated/minloc0_4_i4.c: Regenerated.
* generated/minloc0_4_i8.c: Regenerated.
* generated/minloc0_4_i16.c: Regenerated.
* generated/minloc0_4_r4.c: Regenerated.
* generated/minloc0_4_r8.c: Regenerated.
* generated/minloc0_4_r10.c: Regenerated.
* generated/minloc0_4_r16.c: Regenerated.
* generated/minloc0_8_i1.c: Regenerated.
* generated/minloc0_8_i2.c: Regenerated.
* generated/minloc0_8_i4.c: Regenerated.
* generated/minloc0_8_i8.c: Regenerated.
* generated/minloc0_8_i16.c: Regenerated.
* generated/minloc0_8_r4.c: Regenerated.
* generated/minloc0_8_r8.c: Regenerated.
* generated/minloc0_8_r10.c: Regenerated.
* generated/minloc0_8_r16.c: Regenerated.
* generated/minloc0_16_i1.c: Regenerated.
* generated/minloc0_16_i2.c: Regenerated.
* generated/minloc0_16_i4.c: Regenerated.
* generated/minloc0_16_i8.c: Regenerated.
* generated/minloc0_16_i16.c: Regenerated.
* generated/minloc0_16_r4.c: Regenerated.
* generated/minloc0_16_r8.c: Regenerated.
* generated/minloc0_16_r10.c: Regenerated.
* generated/minloc0_16_r16.c: Regenerated.
2019-01-09 Sandra Loosemore <sandra@codesourcery.com>
PR other/16615
* caf/single.c: Mechanically replace "can not" with "cannot".
* io/unit.c: Likewise.
2019-01-07 Thomas Koenig <tkoenig@gcc.gnu.org>
Harald Anlauf <anlauf@gmx.de>
Tobias Burnus <burnus@gcc.gnu.org>
PR fortran/45424
* Makefile.am: Add intrinsics/is_contiguous.c.
* Makefile.in: Regenerated.
* gfortran.map: Add _gfortran_is_contiguous0.
* intrinsics/is_contiguous.c: New file.
* libgfortran.h: Add prototype for is_contiguous0.
2019-01-07 Janne Blomqvist <jb@gcc.gnu.org>
* gfortran.map (GFORTRAN_9): Make GFORTRAN_9 node depend on
GFORTRAN_8.
2019-01-01 Jakub Jelinek <jakub@redhat.com>
Update copyright years.
Copyright (C) 2019 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
Reference in New Issue View Git Blame Copy Permalink