gcc-changelog: Improve error text for overlong ChangeLog lines

This error is wrong, the line is what exceeds LINE_LIMIT characters, the
limit doesn't exceed itself.

contrib/ChangeLog:

* gcc-changelog/git_commit.py (GitCommit.parse_changelog): Fix
grammar.

contrib: Make prepare-commit-msg hook safe for older branches

If a user installs this script as .git/hooks/prepare-commit-msg and then
works on an old branch which doesn't have the mklog.py script, trying to
commit will fail with an error like:

environment: /.../gcc/contrib/mklog.py: No such file or directory

This makes it exit cleanly so it's possible to commit.

contrib/ChangeLog:

* prepare-commit-msg: Do nothing if the mklog.py script isn't
present.

Make TOPN counter dynamically allocated.

gcc/ChangeLog:

* coverage.c (get_coverage_counts): Skip sanity check for TOP N counters
as they have variable number of counters.
* gcov-dump.c (main): Add new option -r.
(print_usage): Likewise.
(tag_counters): All new raw format.
* gcov-io.h (struct gcov_kvp): New.
(GCOV_TOPN_VALUES): Remove.
(GCOV_TOPN_VALUES_COUNTERS): Likewise.
(GCOV_TOPN_MEM_COUNTERS): New.
(GCOV_TOPN_DISK_COUNTERS): Likewise.
(GCOV_TOPN_MAXIMUM_TRACKED_VALUES): Likewise.
* ipa-profile.c (ipa_profile_generate_summary): Use
GCOV_TOPN_MAXIMUM_TRACKED_VALUES.
(ipa_profile_write_edge_summary): Likewise.
(ipa_profile_read_edge_summary): Likewise.
(ipa_profile): Remove usage of GCOV_TOPN_VALUES.
* profile.c (sort_hist_values): Sort variable number
of counters.
(compute_value_histograms): Special case for TOP N counters
that have dynamic number of key-value pairs.
* value-prof.c (dump_histogram_value): Dump variable number
of key-value pairs.
(stream_in_histogram_value): Stream in variable number
of key-value pairs for TOP N counter.
(get_nth_most_common_value): Deal with variable number
of key-value pairs.
(dump_ic_profile): Use GCOV_TOPN_MAXIMUM_TRACKED_VALUES
for loop iteration.
(gimple_find_values_to_profile): Set GCOV_TOPN_MEM_COUNTERS
to n_counters.
* doc/gcov-dump.texi: Document new -r option.

libgcc/ChangeLog:

* libgcov-driver.c (prune_topn_counter): Remove.
(prune_counters): Likewise.
(merge_one_data): Special case TOP N counters
as they have variable length.
(write_top_counters): New.
(write_one_data): Special case TOP N.
(dump_one_gcov): Do not prune TOP N counters.
* libgcov-merge.c (merge_topn_values_set): Remove.
(__gcov_merge_topn): Use gcov_topn_add_value.
* libgcov-profiler.c (__gcov_topn_values_profiler_body):
Likewise here.
* libgcov.h (gcov_counter_add): New.
(gcov_counter_set_if_null): Likewise.
(gcov_topn_add_value): New.

openmp: Fix up build if HAVE_SYNC_BUILTINS is not defined.

2020-06-02  Jakub Jelinek  <jakub@redhat.com>

* allocator.c (omp_free): Fix up build if HAVE_SYNC_BUILTINS is not
defined.

[Ada] Remove ASIS_Mode

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

* atree.ads, checks.adb, contracts.adb, debug.adb, einfo.ads,
exp_ch3.adb, exp_util.adb, expander.ads, expander.adb,
frontend.adb, gnat1drv.adb, itypes.adb, lib.ads, namet.ads,
opt.adb, opt.ads, par-prag.adb, repinfo.ads, sem_aggr.adb,
sem_aux.ads, sem_case.ads, sem_ch10.adb, sem_ch12.adb,
sem_ch13.adb, sem_ch3.adb, sem_ch4.adb, sem_ch6.adb,
sem_dim.adb, sem_elab.adb, sem_prag.adb, sem_prag.ads,
sem_res.adb, sem_type.adb, sem_util.adb, sinfo.ads, stand.ads,
tree_io.ads: Remove references to ASIS_Mode.

[Ada] CCG: regressions on ACATS c460007, c46013a, cd1009d

2020-06-02  Javier Miranda  <miranda@adacore.com>

gcc/ada/

* exp_ch4.adb (Generate_Temporary): New subprogram of
Discrete_Range_Check that generates a temporary to facilitate
the C backend the code generation of the unchecked conversion
since the size of the source type may differ from the size of
the target type.

[Ada] Bump copyright year

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

* ada_get_targ.adb: Bump copyright year.
* adabkend.adb: Likewise.
* adabkend.ads: Likewise.
* adadecode.c: Likewise.
* adadecode.h: Likewise.
* adaint.c: Likewise.
* adaint.h: Likewise.
* affinity.c: Likewise.
* ali-util.adb: Likewise.
* ali-util.ads: Likewise.
* ali.adb: Likewise.
* ali.ads: Likewise.
* alloc.ads: Likewise.
* argv-lynxos178-raven-cert.c: Likewise.
* argv.c: Likewise.
* aspects.adb: Likewise.
* aspects.ads: Likewise.
* atree.adb: Likewise.
* atree.ads: Likewise.
* atree.h: Likewise.
* aux-io.c: Likewise.
* back_end.adb: Likewise.
* back_end.ads: Likewise.
* bcheck.adb: Likewise.
* bcheck.ads: Likewise.
* binde.adb: Likewise.
* binde.ads: Likewise.
* binderr.adb: Likewise.
* binderr.ads: Likewise.
* bindgen.adb: Likewise.
* bindgen.ads: Likewise.
* bindo-augmentors.adb: Likewise.
* bindo-augmentors.ads: Likewise.
* bindo-builders.adb: Likewise.
* bindo-builders.ads: Likewise.
* bindo-diagnostics.adb: Likewise.
* bindo-diagnostics.ads: Likewise.
* bindo-elaborators.adb: Likewise.
* bindo-elaborators.ads: Likewise.
* bindo-graphs.adb: Likewise.
* bindo-graphs.ads: Likewise.
* bindo-units.adb: Likewise.
* bindo-units.ads: Likewise.
* bindo-validators.adb: Likewise.
* bindo-validators.ads: Likewise.
* bindo-writers.adb: Likewise.
* bindo-writers.ads: Likewise.
* bindo.adb: Likewise.
* bindo.ads: Likewise.
* bindusg.adb: Likewise.
* bindusg.ads: Likewise.
* butil.adb: Likewise.
* butil.ads: Likewise.
* cal.c: Likewise.
* casing.adb: Likewise.
* casing.ads: Likewise.
* ceinfo.adb: Likewise.
* checks.adb: Likewise.
* checks.ads: Likewise.
* cio.c: Likewise.
* clean.adb: Likewise.
* clean.ads: Likewise.
* comperr.adb: Likewise.
* comperr.ads: Likewise.
* contracts.adb: Likewise.
* contracts.ads: Likewise.
* csets.adb: Likewise.
* csets.ads: Likewise.
* csinfo.adb: Likewise.
* cstand.adb: Likewise.
* cstand.ads: Likewise.
* cstreams.c: Likewise.
* ctrl_c.c: Likewise.
* debug.adb: Likewise.
* debug.ads: Likewise.
* debug_a.adb: Likewise.
* debug_a.ads: Likewise.
* einfo.adb: Likewise.
* einfo.ads: Likewise.
* elists.adb: Likewise.
* elists.ads: Likewise.
* elists.h: Likewise.
* env.c: Likewise.
* env.h: Likewise.
* err_vars.ads: Likewise.
* errno.c: Likewise.
* errout.adb: Likewise.
* errout.ads: Likewise.
* erroutc.adb: Likewise.
* erroutc.ads: Likewise.
* errutil.adb: Likewise.
* errutil.ads: Likewise.
* eval_fat.adb: Likewise.
* eval_fat.ads: Likewise.
* exit.c: Likewise.
* exp_aggr.adb: Likewise.
* exp_aggr.ads: Likewise.
* exp_atag.adb: Likewise.
* exp_atag.ads: Likewise.
* exp_attr.adb: Likewise.
* exp_attr.ads: Likewise.
* exp_cg.adb: Likewise.
* exp_cg.ads: Likewise.
* exp_ch10.ads: Likewise.
* exp_ch11.adb: Likewise.
* exp_ch11.ads: Likewise.
* exp_ch12.adb: Likewise.
* exp_ch12.ads: Likewise.
* exp_ch13.adb: Likewise.
* exp_ch13.ads: Likewise.
* exp_ch2.adb: Likewise.
* exp_ch2.ads: Likewise.
* exp_ch3.adb: Likewise.
* exp_ch3.ads: Likewise.
* exp_ch4.adb: Likewise.
* exp_ch4.ads: Likewise.
* exp_ch5.adb: Likewise.
* exp_ch5.ads: Likewise.
* exp_ch6.adb: Likewise.
* exp_ch6.ads: Likewise.
* exp_ch7.adb: Likewise.
* exp_ch7.ads: Likewise.
* exp_ch8.adb: Likewise.
* exp_ch8.ads: Likewise.
* exp_ch9.adb: Likewise.
* exp_ch9.ads: Likewise.
* exp_code.adb: Likewise.
* exp_code.ads: Likewise.
* exp_dbug.adb: Likewise.
* exp_dbug.ads: Likewise.
* exp_disp.adb: Likewise.
* exp_disp.ads: Likewise.
* exp_dist.adb: Likewise.
* exp_dist.ads: Likewise.
* exp_fixd.adb: Likewise.
* exp_fixd.ads: Likewise.
* exp_imgv.adb: Likewise.
* exp_imgv.ads: Likewise.
* exp_intr.adb: Likewise.
* exp_intr.ads: Likewise.
* exp_pakd.adb: Likewise.
* exp_pakd.ads: Likewise.
* exp_prag.adb: Likewise.
* exp_prag.ads: Likewise.
* exp_sel.adb: Likewise.
* exp_sel.ads: Likewise.
* exp_smem.adb: Likewise.
* exp_smem.ads: Likewise.
* exp_spark.adb: Likewise.
* exp_spark.ads: Likewise.
* exp_strm.adb: Likewise.
* exp_strm.ads: Likewise.
* exp_tss.adb: Likewise.
* exp_tss.ads: Likewise.
* exp_unst.adb: Likewise.
* exp_unst.ads: Likewise.
* exp_util.adb: Likewise.
* exp_util.ads: Likewise.
* expander.adb: Likewise.
* expander.ads: Likewise.
* expect.c: Likewise.
* fe.h: Likewise.
* final.c: Likewise.
* fmap.adb: Likewise.
* fmap.ads: Likewise.
* fname-sf.adb: Likewise.
* fname-sf.ads: Likewise.
* fname-uf.adb: Likewise.
* fname-uf.ads: Likewise.
* fname.adb: Likewise.
* fname.ads: Likewise.
* freeze.adb: Likewise.
* freeze.ads: Likewise.
* frontend.adb: Likewise.
* frontend.ads: Likewise.
* get_scos.adb: Likewise.
* get_scos.ads: Likewise.
* get_targ.adb: Likewise.
* get_targ.ads: Likewise.
* ghost.adb: Likewise.
* ghost.ads: Likewise.
* gnat1drv.adb: Likewise.
* gnat1drv.ads: Likewise.
* gnatbind.adb: Likewise.
* gnatbind.ads: Likewise.
* gnatchop.adb: Likewise.
* gnatclean.adb: Likewise.
* gnatcmd.adb: Likewise.
* gnatcmd.ads: Likewise.
* gnatdll.adb: Likewise.
* gnatfind.adb: Likewise.
* gnatkr.adb: Likewise.
* gnatkr.ads: Likewise.
* gnatlink.adb: Likewise.
* gnatlink.ads: Likewise.
* gnatls.adb: Likewise.
* gnatls.ads: Likewise.
* gnatmake.adb: Likewise.
* gnatmake.ads: Likewise.
* gnatname.adb: Likewise.
* gnatname.ads: Likewise.
* gnatprep.adb: Likewise.
* gnatprep.ads: Likewise.
* gnatvsn.adb: Likewise.
* gnatxref.adb: Likewise.
* gprep.adb: Likewise.
* gprep.ads: Likewise.
* gsocket.h: Likewise.
* hostparm.ads: Likewise.
* impunit.adb: Likewise.
* impunit.ads: Likewise.
* indepsw-aix.adb: Likewise.
* indepsw-darwin.adb: Likewise.
* indepsw-gnu.adb: Likewise.
* indepsw.adb: Likewise.
* indepsw.ads: Likewise.
* init.c: Likewise.
* initialize.c: Likewise.
* inline.adb: Likewise.
* inline.ads: Likewise.
* itypes.adb: Likewise.
* itypes.ads: Likewise.
* krunch.adb: Likewise.
* krunch.ads: Likewise.
* layout.adb: Likewise.
* layout.ads: Likewise.
* lib-list.adb: Likewise.
* lib-load.adb: Likewise.
* lib-load.ads: Likewise.
* lib-sort.adb: Likewise.
* lib-util.adb: Likewise.
* lib-util.ads: Likewise.
* lib-writ.adb: Likewise.
* lib-writ.ads: Likewise.
* lib-xref-spark_specific.adb: Likewise.
* lib-xref.adb: Likewise.
* lib-xref.ads: Likewise.
* lib.adb: Likewise.
* lib.ads: Likewise.
* libgnarl/a-astaco.adb: Likewise.
* libgnarl/a-dispat.adb: Likewise.
* libgnarl/a-dynpri.adb: Likewise.
* libgnarl/a-etgrbu.ads: Likewise.
* libgnarl/a-exetim__darwin.adb: Likewise.
* libgnarl/a-exetim__default.ads: Likewise.
* libgnarl/a-exetim__mingw.adb: Likewise.
* libgnarl/a-exetim__mingw.ads: Likewise.
* libgnarl/a-exetim__posix.adb: Likewise.
* libgnarl/a-interr.adb: Likewise.
* libgnarl/a-interr.ads: Likewise.
* libgnarl/a-intnam.ads: Likewise.
* libgnarl/a-intnam__aix.ads: Likewise.
* libgnarl/a-intnam__darwin.ads: Likewise.
* libgnarl/a-intnam__dragonfly.ads: Likewise.
* libgnarl/a-intnam__dummy.ads: Likewise.
* libgnarl/a-intnam__freebsd.ads: Likewise.
* libgnarl/a-intnam__hpux.ads: Likewise.
* libgnarl/a-intnam__linux.ads: Likewise.
* libgnarl/a-intnam__lynxos.ads: Likewise.
* libgnarl/a-intnam__mingw.ads: Likewise.
* libgnarl/a-intnam__qnx.ads: Likewise.
* libgnarl/a-intnam__rtems.ads: Likewise.
* libgnarl/a-intnam__solaris.ads: Likewise.
* libgnarl/a-intnam__vxworks.ads: Likewise.
* libgnarl/a-reatim.adb: Likewise.
* libgnarl/a-reatim.ads: Likewise.
* libgnarl/a-retide.adb: Likewise.
* libgnarl/a-retide.ads: Likewise.
* libgnarl/a-rttiev.adb: Likewise.
* libgnarl/a-rttiev.ads: Likewise.
* libgnarl/a-synbar.adb: Likewise.
* libgnarl/a-synbar.ads: Likewise.
* libgnarl/a-synbar__posix.adb: Likewise.
* libgnarl/a-synbar__posix.ads: Likewise.
* libgnarl/a-sytaco.adb: Likewise.
* libgnarl/a-sytaco.ads: Likewise.
* libgnarl/a-tasatt.adb: Likewise.
* libgnarl/a-tasatt.ads: Likewise.
* libgnarl/a-taside.adb: Likewise.
* libgnarl/a-taside.ads: Likewise.
* libgnarl/a-taster.adb: Likewise.
* libgnarl/g-boubuf.adb: Likewise.
* libgnarl/g-boubuf.ads: Likewise.
* libgnarl/g-boumai.ads: Likewise.
* libgnarl/g-semaph.adb: Likewise.
* libgnarl/g-semaph.ads: Likewise.
* libgnarl/g-signal.adb: Likewise.
* libgnarl/g-signal.ads: Likewise.
* libgnarl/g-tastus.ads: Likewise.
* libgnarl/g-thread.adb: Likewise.
* libgnarl/g-thread.ads: Likewise.
* libgnarl/i-vxinco.adb: Likewise.
* libgnarl/i-vxinco.ads: Likewise.
* libgnarl/s-inmaop.ads: Likewise.
* libgnarl/s-inmaop__dummy.adb: Likewise.
* libgnarl/s-inmaop__posix.adb: Likewise.
* libgnarl/s-inmaop__vxworks.adb: Likewise.
* libgnarl/s-interr.adb: Likewise.
* libgnarl/s-interr.ads: Likewise.
* libgnarl/s-interr__dummy.adb: Likewise.
* libgnarl/s-interr__hwint.adb: Likewise.
* libgnarl/s-interr__sigaction.adb: Likewise.
* libgnarl/s-interr__vxworks.adb: Likewise.
* libgnarl/s-intman.ads: Likewise.
* libgnarl/s-intman__android.adb: Likewise.
* libgnarl/s-intman__dummy.adb: Likewise.
* libgnarl/s-intman__lynxos.adb: Likewise.
* libgnarl/s-intman__mingw.adb: Likewise.
* libgnarl/s-intman__posix.adb: Likewise.
* libgnarl/s-intman__qnx.adb: Likewise.
* libgnarl/s-intman__solaris.adb: Likewise.
* libgnarl/s-intman__susv3.adb: Likewise.
* libgnarl/s-intman__vxworks.adb: Likewise.
* libgnarl/s-intman__vxworks.ads: Likewise.
* libgnarl/s-linux.ads: Likewise.
* libgnarl/s-linux__alpha.ads: Likewise.
* libgnarl/s-linux__android.ads: Likewise.
* libgnarl/s-linux__hppa.ads: Likewise.
* libgnarl/s-linux__mips.ads: Likewise.
* libgnarl/s-linux__riscv.ads: Likewise.
* libgnarl/s-linux__sparc.ads: Likewise.
* libgnarl/s-linux__x32.ads: Likewise.
* libgnarl/s-mudido.adb: Likewise.
* libgnarl/s-mudido__affinity.adb: Likewise.
* libgnarl/s-osinte__aix.adb: Likewise.
* libgnarl/s-osinte__aix.ads: Likewise.
* libgnarl/s-osinte__android.adb: Likewise.
* libgnarl/s-osinte__android.ads: Likewise.
* libgnarl/s-osinte__darwin.adb: Likewise.
* libgnarl/s-osinte__darwin.ads: Likewise.
* libgnarl/s-osinte__dragonfly.adb: Likewise.
* libgnarl/s-osinte__dragonfly.ads: Likewise.
* libgnarl/s-osinte__dummy.ads: Likewise.
* libgnarl/s-osinte__freebsd.adb: Likewise.
* libgnarl/s-osinte__freebsd.ads: Likewise.
* libgnarl/s-osinte__gnu.adb: Likewise.
* libgnarl/s-osinte__gnu.ads: Likewise.
* libgnarl/s-osinte__hpux-dce.adb: Likewise.
* libgnarl/s-osinte__hpux-dce.ads: Likewise.
* libgnarl/s-osinte__hpux.ads: Likewise.
* libgnarl/s-osinte__kfreebsd-gnu.ads: Likewise.
* libgnarl/s-osinte__linux.ads: Likewise.
* libgnarl/s-osinte__lynxos178.adb: Likewise.
* libgnarl/s-osinte__lynxos178e.ads: Likewise.
* libgnarl/s-osinte__mingw.ads: Likewise.
* libgnarl/s-osinte__posix.adb: Likewise.
* libgnarl/s-osinte__qnx.adb: Likewise.
* libgnarl/s-osinte__qnx.ads: Likewise.
* libgnarl/s-osinte__rtems.adb: Likewise.
* libgnarl/s-osinte__rtems.ads: Likewise.
* libgnarl/s-osinte__solaris.adb: Likewise.
* libgnarl/s-osinte__solaris.ads: Likewise.
* libgnarl/s-osinte__vxworks.adb: Likewise.
* libgnarl/s-osinte__vxworks.ads: Likewise.
* libgnarl/s-osinte__x32.adb: Likewise.
* libgnarl/s-proinf.adb: Likewise.
* libgnarl/s-proinf.ads: Likewise.
* libgnarl/s-qnx.ads: Likewise.
* libgnarl/s-solita.adb: Likewise.
* libgnarl/s-solita.ads: Likewise.
* libgnarl/s-stusta.adb: Likewise.
* libgnarl/s-stusta.ads: Likewise.
* libgnarl/s-taasde.adb: Likewise.
* libgnarl/s-taasde.ads: Likewise.
* libgnarl/s-tadeca.adb: Likewise.
* libgnarl/s-tadeca.ads: Likewise.
* libgnarl/s-tadert.adb: Likewise.
* libgnarl/s-tadert.ads: Likewise.
* libgnarl/s-taenca.adb: Likewise.
* libgnarl/s-taenca.ads: Likewise.
* libgnarl/s-taprob.adb: Likewise.
* libgnarl/s-taprob.ads: Likewise.
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* make_util.ads: Likewise.
* makeusg.adb: Likewise.
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* mdll-fil.adb: Likewise.
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* mdll-utl.adb: Likewise.
* mdll-utl.ads: Likewise.
* mdll.adb: Likewise.
* mdll.ads: Likewise.
* mingw32.h: Likewise.
* mkdir.c: Likewise.
* namet-sp.adb: Likewise.
* namet-sp.ads: Likewise.
* namet.adb: Likewise.
* namet.ads: Likewise.
* namet.h: Likewise.
* nlists.adb: Likewise.
* nlists.ads: Likewise.
* nlists.h: Likewise.
* opt.adb: Likewise.
* opt.ads: Likewise.
* osint-b.adb: Likewise.
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* output.adb: Likewise.
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* par-ch10.adb: Likewise.
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* par-ch12.adb: Likewise.
* par-ch13.adb: Likewise.
* par-ch2.adb: Likewise.
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* repinfo.adb: Likewise.
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* repinfo.h: Likewise.
* restrict.adb: Likewise.
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* rident.ads: Likewise.
* rtfinal.c: Likewise.
* rtinit.c: Likewise.
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* runtime.h: Likewise.
* s-oscons-tmplt.c: Likewise.
* sa_messages.adb: Likewise.
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* scans.adb: Likewise.
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* scil_ll.adb: Likewise.
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* seh_init.c: Likewise.
* sem.adb: Likewise.
* sem.ads: Likewise.
* sem_aggr.adb: Likewise.
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* sem_attr.adb: Likewise.
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* sem_aux.adb: Likewise.
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[Ada] Improved support for aspect alignment in CCG

2020-06-02  Javier Miranda  <miranda@adacore.com>

gcc/ada/

* sem_ch3.adb (Analyze_Object_Declaration): Set attribute
Expansion_Delayed on aggregates that initialize an object that
has aspect alignment or address clause. Done to allow ther
initialization by means of multiple assignments.
* exp_ch3.adb (Expand_N_Object_Declaration): Resolve delayed
aggregates. This patch complements the patch applied to
sem_ch3.adb

[Ada] Compiler crash processing controlled type primitive

2020-06-02  Javier Miranda  <miranda@adacore.com>

gcc/ada/

* sem_util.adb (Ensure_Minimum_Decoration): New subprogram that
ensures the minimum decoration required by
Requires_Transient_Scope() to provide its functionality when the
entity is not frozen.

[Ada] Remove degenerate Treat_Fixed_As_Integer mechanism

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_ch4.adb (Expand_N_Op_Divide): Remove code dealing with
the Treat_Fixed_As_Integer flag.
(Expand_N_Op_Multiply): Likewise.
* exp_fixd.adb (Build_Divide): Do the division in an integer
type long enough to hold both operands and convert the result
to the type of the LHS.  Do not set Treat_Fixed_As_Integer.
(Build_Multiply): Do not set Treat_Fixed_As_Integer.
(Build_Rem): Likewise.
* sem_ch4.adb (Analyze_Arithmetic_Op): Remove code dealing with
the Treat_Fixed_As_Integer flag.
(Check_Arithmetic_Pair): Likewise.
* sinfo.ads (Treat_Fixed_As_Integer): Delete.
(N_Has_Treat_Fixed_As_Integer): Likewise.
(Set_Treat_Fixed_As_Integer): Likewise.
* sinfo.adb (Treat_Fixed_As_Integer): Likewise.
(Set_Treat_Fixed_As_Integer): Likewise.
* sprint.ads (Syntax Extensions): Remove '#' special character.
* sprint.adb (Process_TFAI_RR_Flags): Delete.
(Sprint_Node_Actual) <N_Op_Divide>: Print '@' manually.
<N_Op_Multiply>: Likewise.
<N_Op_Mod>: Do not print '#'.
<N_Op_Rem>: Likewise.

[Ada] Get rid of more references to Universal_Integer in expanded code

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_aggr.adb (Others_Check): In the positional case, use the
general expression for the comparison only when needed.
* exp_attr.adb (Expand_Fpt_Attribute;): Use a simple conversion
to the target type instead of an unchecked conversion to the
base type to do the range check, as in the other cases.
(Expand_N_Attribute_Reference) <Attribute_Storage_Size>: Do the
Max operation in the type of the storage size variable, and use
Convert_To as in the other cases.
* tbuild.adb (Convert_To): Do not get rid of an intermediate
conversion to Universal_Integer here...
* sem_res.adb  (Simplify_Type_Conversion): ...but here instead.

[Ada] gnatpp: documentation for --RM-style-spacing

2020-06-02  Bob Duff  <duff@adacore.com>

gcc/ada/

* doc/gnat_ugn/gnat_utility_programs.rst: Update documentation
for --RM-style-spacing.

[Ada] gnatpp: documentation for --[no-]compact switch

2020-06-02  Bob Duff  <duff@adacore.com>

gcc/ada/

* doc/gnat_ugn/gnat_utility_programs.rst: Add documentation for
--[no-]compact switch.

[Ada] Get rid of more references to Universal_Integer in expanded code

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_aggr.adb (Build_Array_Aggr_Code): Set the type of the PAT
on the zero used to clear the array.
* exp_attr.adb (Expand_N_Attribute_Reference)
<Attribute_Alignment>: In the CW case, directly convert from the
alignment's type to the target type if the parent is an
unchecked conversion.
* sem_res.adb (Set_String_Literal_Subtype): In the dynamic case,
use the general expression for the upper bound only when needed.
Set the base type of the index as the type of the low bound.
(Simplify_Type_Conversion): Do an intermediate conversion to the
root type of the target type if the operand is an integer
literal.
* tbuild.adb (Convert_To): Get rid of an intermediate conversion
to Universal_Integer if the inner expression has integer tyoe.
* libgnat/a-sequio.adb (Byte_Swap): Make use of an equivalent
static expression in the case statement.

[Ada] Statement SCO code for degenerate subprograms

2020-06-02  Thomas Quinot  <quinot@adacore.com>

gcc/ada/

* par_sco.adb (Traverse_Degenerate_Subprogram): Set statement
code to 'X'.
* scos.ads: Update comment documenting SCO data.

[Ada] ICE during unnesting when nested subprograms have address taken

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

* exp_unst.adb (Register_Subprogram): Test for Address_Taken (in
addition to the existing test for In_Synchonized_Unit) when
deciding whether to reset the Reachable flag on all subprograms
enclosing the subprogram being registered.

[Ada] Spurious accessibility error on return aggregate in GNATprove mode

2020-06-02  Justin Squirek  <squirek@adacore.com>

gcc/ada/

* sem_ch6.adb (Check_Return_Obj_Accessibility): Avoid use of
parent node pointers so we are not relying on expansion done in
GNATprove mode.

[Ada] Fix minor discrepancy in Expand_N_Attribute_Reference

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_attr.adb (Expand_N_Attribute_Reference)
<Attribute_Alignment>: Adjust comment and compare against proper
type.

[Ada] Unnesting bugs with array renamings generated for quantified expr

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

* exp_unst.adb (Visit_Node): When visiting array attribute
nodes, apply Get_Referenced_Object to the attribute prefix, to
handle prefixes denoting renamed objects by picking up the Etype
of the renamed object rather than the possibly unconstrained
nominal subtype of the renaming declaration's Entity.
* sem_util.ads (Get_Referenced_Object): Update comment to
clearly indicate that any kind of node can be passed to this
function.
* sem_util.adb (Get_Referenced_Object): Add test of Is_Object to
the condition, to allow for passing names that denote types and
subtypes.

[Ada] snames.ads-tmpl: add comment

2020-06-02  Bob Duff  <duff@adacore.com>

gcc/ada/

* snames.ads-tmpl: Add comments explaining that enumeration
types have to be kept in synch with subtypes of Name_Id.

[Ada] Remove dead code for detecting hidden package state

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* sem_util.adb (Check_No_Hidden_State): Remove dead code.

[Ada] Use Standard.Natural on bit references to packed arrays

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_pakd.adb (Expand_Packed_Bit_Reference): Change type of
reference from Universal_Integer to Standard_Natural.

[Ada] Accept objects from nested packages in Initializes contract

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* sem_prag.adb (Collect_States_And_Objects): Call itself on
declaration of nested packages; append abstract states
one-by-one, so that in recursive call we do not overwrite the
ones that have been already collected.

[Ada] Use Standard.Natural on indices in support routines for Ada.Tags

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_atag.ads (Build_Inherit_Predefined_Prims): Change type
of Num_Predef_Prim parameter from Int to Nat.
* exp_atag.adb (Build_Range): New procedure.
(Build_Val): Likewise.
(Build_CW_Membership): Call Build_Val.
(Build_Get_Predefined_Prim_Op_Address): Likewise.
(Build_Inherit_CPP_Prims): Likewise.
(Build_Get_Prim_Op_Address): Likewise.
(Build_Set_Predefined_Prim_Op_Address): Likewise.
(Build_Inherit_Prims): Call Build_Range.
(Build_Inherit_Predefined_Prims): Likewise.  Change type of
Num_Predef_Prim parameter from Int to Nat.

[Ada] Two typo fixes

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

* sem_ch3.adb: Two typo fixes.

[Ada] Fix small oversight in latest change for Replace_Discriminants

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* sem_ch3.adb (Replace_Discriminants): Preserve the Etype of the
Name of N_Variant_Part nodes when rewriting it.

[Ada] Do not set the bounds of integer types to be universal

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* sem_ch3.adb (Signed_Integer_Type_Declaration): Change the type
of the bounds from Universal_Integer to Implicit_Base.

[Ada] Address potentially uninitialized variables and dead code

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

* bcheck.adb, binde.adb, bindo-diagnostics.adb, checks.adb,
exp_aggr.adb, exp_ch3.adb, exp_ch4.adb, exp_ch7.adb,
exp_ch9.adb, gnatname.adb, sem_case.adb, sem_ch13.adb,
sem_ch5.adb, sem_prag.adb, sem_util.adb, uintp.adb, urealp.adb,
xoscons.adb, xr_tabls.adb, xref_lib.adb: Initialize objects more
explicitly and add corresponding assertions. Remove dead code.
Also add a few Annotate pragmas to help static analysis.
* libgnat/a-caldel.adb, libgnat/a-calend.adb,
libgnat/a-ngcoty.adb, libgnat/a-ngelfu.adb,
libgnat/a-ngrear.adb, libgnat/a-strfix.adb,
libgnat/g-calend.adb, libgnat/g-catiio.adb,
libgnat/g-comlin.adb, libgnat/g-debpoo.adb,
libgnat/g-dirope.adb, libgnat/g-hesorg.adb,
libgnat/g-pehage.adb, libgnat/g-socket.adb, libgnat/i-cobol.adb,
libgnat/s-dwalin.adb, libgnat/s-dwalin.ads,
libgnat/s-fatgen.adb, libgnat/s-gearop.adb,
libgnat/s-genbig.adb, libgnat/s-imgrea.adb,
libgnat/s-os_lib.adb, libgnat/s-rannum.adb,
libgnat/s-regpat.adb, libgnat/s-trasym__dwarf.adb,
libgnat/s-valrea.adb: Ditto.

[Ada] Fix bogus error for clause on derived type with variant part

2020-06-02  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* sem_ch3.adb (Replace_Components): Rename into...
(Replace_Discriminants): ...this.  Replace girder discriminants
with non-girder ones.  Do not replace components.
* sem_ch13.adb (Check_Record_Representation_Clause): Deal with
non-girder discriminants correctly.

[Ada] Use new API when creating a special SPARK heap entity

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* lib-xref-spark_specific.adb (Create_Heap): use a new variant
of Name_Enter to directly converts String to Make_Id.

[Ada] Typo corrections and minor reformatting

2020-06-02  Gary Dismukes  <dismukes@adacore.com>

gcc/ada/

* exp_attr.adb, par-ch4.adb, par-util.adb, scans.ads, scng.adb,
sem_attr.adb, sem_ch4.adb, sinfo.ads: Typo corrections and minor
reformatting.

[Ada] Treat attribute Img equivalent to attribute Image

2020-06-02  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

* snames.ads-tmpl (Name_Img, Attribute_Img): Make it an
attribute returning renamable functions.

[Ada] Allow GNATprove to set overflow mode

2020-06-02  Yannick Moy  <moy@adacore.com>

gcc/ada/

* sem_prag.adb, sem_prag.ads (Set_Overflow_Mode): New procedure
to set overflow mode.

[Ada] Reuse Is_Package_Or_Generic_Package where possible

2020-06-02  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* contracts.adb, einfo.adb, exp_ch9.adb, sem_ch12.adb,
sem_ch4.adb, sem_ch7.adb, sem_ch8.adb, sem_elab.adb,
sem_type.adb, sem_util.adb: Reuse Is_Package_Or_Generic_Package
where possible (similarly, reuse Is_Concurrent_Type if it was
possible in the same expressions).

Fix unrecognised -mcpu target 'armv7-a' on arm-wrs-vxworks7

In the removal of arm-wrs-vxworks, the default cpu was updated from arm8
to armv7-a, but this is not recognized as a valid -mcpu target.  There
is however generic-armv7-a, which was likely the intended cpu that
should have been used instead.

gcc/ChangeLog:

PR target/95420
* config.gcc (arm-wrs-vxworks7*): Set default cpu to generic-armv7-a.

d: Fix segfault in build_frontend_type on alpha-*-*

The va_list type for Alpha includes a nameless dummy field for alignment
purposes.  To transpose this into D, a field named "__pad%d" is inserted
into the struct definition.

It was also noticed that in the D front-end AST copy of the backend
type, all offsets for fields generated by build_frontend_type were set
to zero due to a wrong assumption that DECL_FIELD_OFFSET would have a
non-zero value.  This has been fixed to use byte_position instead.

gcc/d/ChangeLog:

* d-builtins.cc (build_frontend_type): Handle struct fields with NULL
DECL_NAME.  Use byte_position to get the real field offset.

contrib: Improve comments and error text

* gcc-changelog/git_commit.py (GitCommit.check_mentioned_files):
Improve error text.

Update link to LOCAL_PATCHES.

libsanitizer/ChangeLog:

* LOCAL_PATCHES: Update hash of local patches.

Reapply all revisions mentioned in LOCAL_PATCHES.

(cherry picked from commit 21bb1625bd4f183984223ce31bd03ba47ed62f27)

Libsanitizer: merge from master.

Merged from revision b638b63b99d66786cb37336292604a2ae3490cfd.

The patch successfully bootstraps on x86_64-linux-gnu and
ppc64le-linux-gnu. I also tested ppc64-linux-gnu that exposed:
https://reviews.llvm.org/D80864 (which is fixed on master).

Abidiff looks happy and I made UBSAN and ASAN bootstrap on
x86_64-linux-gnu.

I'm planning to do merge from master twice a year, once now and
next time short before stage1 closes.

I am going to install the patches as merge from master is obvious
and I haven't made anything special.

libsanitizer/ChangeLog:

* MERGE: Merge from master.

testsuite: Disable colorization for ubsan test

 - Run gcc testsuite with qemu will print out ascii color code for
   ubsan related testcase, however several testcase didn't consider
   that, so disable colorization prevent such problem and simplify the
   process when adding testcase in future.

 - Verified on native X86 and RISC-V qemu full system mode and user mode.

gcc/testsuite/ChangeLog:

* lib/ubsan-dg.exp (orig_ubsan_options_saved): New
(orig_ubsan_options): Ditto.
(ubsan_init): Store UBSAN_OPTIONS and set UBSAN_OPTIONS.
(ubsan_finish): Restore UBSAN_OPTIONS.

c++: constrained lambda inside template [PR92633]

When regenerating a constrained lambda during instantiation of an
enclosing template, we are forgetting to substitute into the lambda's
constraints.  Fix this by substituting through the constraints during
tsubst_lambda_expr.

gcc/cp/ChangeLog:

PR c++/92633
PR c++/92838
* pt.c (tsubst_function_decl): Don't do set_constraints when
regenerating a lambda.
(tsubst_lambda_expr): Substitute into the lambda's constraints
and do set_constraints here.

gcc/testsuite/ChangeLog:

PR c++/92633
PR c++/92838
* g++.dg/cpp2a/concepts-lambda11.C: New test.
* g++.dg/cpp2a/concepts-lambda12.C: New test.

Daily bump.

libstdc++: Fix filesystem::u8path for mingw targets (PR 95392)

When I refactored filesystem::path string conversions in
r11-587-584d52b088f9fcf78704b504c3f1f07e17c1cded I failed to update the
mingw-specific code in filesystem::u8path, causing a bootstrap failure.

This fixes it, and further refactors the mingw-specific code along the
same lines as the previous commit. All conversions from UTF-8 strings to
wide strings now use the same helper function, __wstr_from_utf8.

PR libstdc++/95392
* include/bits/fs_path.h (path::_S_to_string): Move to
namespace-scope and rename to ...
(__detail::__string_from_range): ... this.
[WINDOWS] (__detail::__wstr_from_utf8): New function template to
convert a char sequence containing UTF-8 to wstring.
(path::_S_convert(Iter, Iter)): Adjust call to _S_to_string.
(path::_S_convert_loc(Iter, Iter, const locale&)): Likewise.
(u8path(InputIterator, InputIterator)) [WINDOWS]: Use
__string_from_range to obtain a contiguous range and
__wstr_from_utf8 to obtain a wide string.
(u8path(const Source&)) [WINDOWS]: Use __effective_range to
obtain a contiguous range and __wstr_from_utf8 to obtain a wide
string.
(path::_S_convert(const _EcharT*, const _EcharT)) [WINDOWS]:
Use __wstr_from_utf8.

Fix 92085-2.c ICE due to having (const_int 0) as the destination of a set.

gcc/
* lower-subreg.c (resolve_simple_move): If simplify_gen_subreg_concatn
returns (const_int 0) for the destination, then emit nothing.

c++: vptr ubsan and object of known type [PR95466]

Another case where we can't find the OBJ_TYPE_REF_OBJECT in the
OBJ_TYPE_REF_EXPR.  So let's just evaluate the sanitize call first.

gcc/cp/ChangeLog:

PR c++/95466
PR c++/95311
PR c++/95221
* class.c (build_vfn_ref): Revert 95311 change.
* cp-ubsan.c (cp_ubsan_maybe_instrument_member_call): Build a
COMPOUND_EXPR.

gcc/testsuite/ChangeLog:

PR c++/95466
* g++.dg/ubsan/vptr-17.C: New test.

i386: Add __attribute__ ((gcc_struct)) to struct fenv [PR95418]

Windows ABI (MinGW) is different than Linux ABI when bitfileds are involved.
The following patch adds __attribute__ ((gcc_struct)) to struct fenv in order
to match the layout of x87 state image in memory.

2020-06-01  Uroš Bizjak  <ubizjak@gmail.com>

libatomic/ChangeLog:
* config/x86/fenv.c (struct fenv): Add __attribute__ ((gcc_struct)).

libgcc/ChangeLog:
* config/i386/sfp-exceptions.c (struct fenv):
Add __attribute__ ((gcc_struct)).

libgfortran/ChangeLog:
PR libfortran/95418
* config/fpu-387.h (struct fenv): Add __attribute__ ((gcc_struct)).

coroutines: Correct handling of references in parm copies [PR95350].

Adjust to handle rvalue refs the same way as clang, and to correct
the handling of moves when a copy CTOR is present.  This is one area
where we could make things easier for the end-user (as was implemented
before this change), however there needs to be agreement about when the
full statement containing a coroutine call ends (i.e. when the ramp
terminates or when the coroutine terminates).

gcc/cp/ChangeLog:

PR c++/95350
* coroutines.cc (struct param_info): Remove rv_ref field.
(build_actor_fn): Remove specifial rvalue ref handling.
(morph_fn_to_coro): Likewise.

gcc/testsuite/ChangeLog:

PR c++/95350
* g++.dg/coroutines/torture/func-params-08.C: Adjust test to
reflect that all rvalue refs are dangling.
* g++.dg/coroutines/torture/func-params-09-awaitable-parms.C:
Likewise.
* g++.dg/coroutines/pr95350.C: New test.

libstdc++: Fix __gnu_test::input_iterator_wrapper::operator++(int)

I noticed recently that our input_iterator_wrapper utility for writing
tests has the following post-increment operator:

    void
    operator++(int)
    {
      ++*this;
    }

That fails to meet the Cpp17InputIterator requirement that *r++ is
valid. This change makes it return a non-void proxy type that can be
deferenced to produce another proxy, which is convertible to the
value_type. The second proxy converts to const T& to ensure it can't be
written to.

* testsuite/util/testsuite_iterators.h:
(input_iterator_wrapper::operator++(int)): Return proxy object.

Cleanup global decl stream reference streaming, part 2

gcc/ChangeLog:

2020-06-01  Jan Hubicka  <hubicka@ucw.cz>

* lto-streamer.h (enum LTO_tags): Remove LTO_field_decl_ref,
LTO_function_decl_ref, LTO_label_decl_ref, LTO_namespace_decl_ref,
LTO_result_decl_ref, LTO_type_decl_ref, LTO_type_ref,
LTO_const_decl_ref, LTO_imported_decl_ref,
LTO_translation_unit_decl_ref, LTO_global_decl_ref and
LTO_namelist_decl_ref; add LTO_global_stream_ref.
* lto-streamer-in.c (lto_input_tree_ref): Simplify.
(lto_input_scc): Update.
(lto_input_tree_1): Update.
* lto-streamer-out.c (lto_indexable_tree_ref): Simlify.
* lto-streamer.c (lto_tag_name): Update.

libstdc++: Document API changes in GCC 10

* doc/xml/manual/evolution.xml: Document deprecation of
__is_nullptr_t and removal of std::allocator members.
* doc/html/manual/api.html: Regenerate.

libstdc++: Fix incorrect Docbook links

The <xref> element creates the link text automatically from the link
target, rather than using the text node child of the element. This can
be changed by using an endterm attribute, but it's simpler to just use
the <link> element instead.

* doc/xml/manual/containers.xml: Replace <xref> with <link>.
* doc/xml/manual/evolution.xml: Likewise.
* doc/html/manual/api.html: Regenerate.
* doc/html/manual/containers.html: Regenerate.

libstdc++: Update/streamline Valgrind references

* doc/xml/faq.xml: Adjust Valgrind reference and remove another.
* doc/html/faq.html: Regenerate.

Cleanup global decl stream reference streaming, part 1

This patch further simplifies way we reffer to global stream.  Every function
section has vector of references to global trees which are populated during
streaming.  This vector is for some reason divided into field_decls, fn_decls,
type_decls, types, namespace_decls, labels_decls and var_decls which contains
also other things.

There is no benefit for this split except perhaps for making the indexes
bit smaller and possibly better encodable by ulebs.  This however does not
pay back and makes things unnecesarily complex.
We may want to re-add multiple tables if we start streaming something else than
trees into the global stream, but that would not work with current
infrastructure anyway.

The patch drops different streams and I checked that it results in reduction of
global stream and apparently very small increase in function streams but it may
be just because I updated tree in between the tests. This will be fixed by
incremental patch.

[WPA] Compression: 86220483 input bytes, 217762146 uncompressed bytes (ratio: 2.525643)
[WPA] Compression: 111735464 input bytes, 297410918 uncompressed bytes (ratio: 2.661741)
[WPA] Size of mmap'd section decls: 86220483 bytes
[WPA] Size of mmap'd section function_body: 14353447 bytes

to:

[WPA] Compression: 85754594 input bytes, 216006049 uncompressed bytes (ratio: 2.518886)
[WPA] Compression: 111370381 input bytes, 295746052 uncompressed bytes (ratio: 2.655518)
[WPA] Size of mmap'd section decls: 85754594 bytes
[WPA] Size of mmap'd section function_body: 14447946 bytes

The patch also removes some of ugly macro generators of accessors functions and
makes it easier to further optimize the way we stream references to trees which
I plan to do incrementally.

I also made the API for streaming referneces symmetric.  I.e. you
stream out by
  lto_output_var_decl_ref
and stream in by
  lto_input_var_decl_ref

instead streaming out by
  lto_output_var_decl_index
and streaming in by
  decl_index = streamer_read_uhwi (ib);
  lto_file_decl_data_get_fn_decl (file_data, decl_index);

lto-bootstrapped/regtested x86_64-linux, will commit it shortly.

gcc/ChangeLog:

2020-06-01  Jan Hubicka  <hubicka@ucw.cz>

* ipa-reference.c (stream_out_bitmap): Use lto_output_var_decl_ref.
(ipa_reference_read_optimization_summary): Use lto_intput_var_decl_ref.
* lto-cgraph.c (lto_output_node): Likewise.
(lto_output_varpool_node): Likewise.
(output_offload_tables): Likewise.
(input_node): Likewise.
(input_varpool_node): Likewise.
(input_offload_tables): Likewise.
* lto-streamer-in.c (lto_input_tree_ref): Declare.
(lto_input_var_decl_ref): Declare.
(lto_input_fn_decl_ref): Declare.
* lto-streamer-out.c (lto_indexable_tree_ref): Use only one decl stream.
(lto_output_var_decl_index): Rename to ..
(lto_output_var_decl_ref): ... this.
(lto_output_fn_decl_index): Rename to ...
(lto_output_fn_decl_ref): ... this.
* lto-streamer.h (enum lto_decl_stream_e_t): Remove per-type streams.
(DEFINE_DECL_STREAM_FUNCS): Remove.
(lto_output_var_decl_index): Remove.
(lto_output_fn_decl_index): Remove.
(lto_output_var_decl_ref): Declare.
(lto_output_fn_decl_ref): Declare.
(lto_input_var_decl_ref): Declare.
(lto_input_fn_decl_ref): Declare.

Fix dump in clone materialization

2020-06-01  Feng Xue  <fxue@os.amperecomputing.com>

gcc/
* cgraphclones.c (materialize_all_clones): Adjust replace map dump.
* ipa-param-manipulation.c (ipa_dump_adjusted_parameters): Do not
dump infomation if there is no adjusted parameter.
* (ipa_param_adjustments::dump): Adjust prefix spaces for dump string.

Move array bounds checking into its own file.

gcc/
* Makefile.in (gimple-array-bounds.o): New.
* tree-vrp.c: Move array bounds code...
* gimple-array-bounds.cc: ...here...
* gimple-array-bounds.h: ...and here.

Move value_range_equiv code to its own file.

gcc/
* Makefile.in (OBJS): Add value-range-equiv.o.
* tree-vrp.c (*value_range_equiv*): Move to...
* value-range-equiv.cc: ...here.
* tree-vrp.h (class value_range_equiv): Move to...
* value-range-equiv.h: ...here.
* vr-values.h: Include value-range-equiv.h.

Fix missed IPA-CP on by-ref argument directly passed through (PR 93429)

2020-06-01  Feng Xue  <fxue@os.amperecomputing.com>

gcc/
PR ipa/93429
* ipa-cp.c (propagate_aggs_across_jump_function): Check aggregate
lattice for simple pass-through by-ref argument.

gcc/testsuite/
PR ipa/93429
* gcc.dg/ipa/ipcp-agg-8.c: Change dump string.
* gcc.dg/ipa/ipcp-agg-13.c: New test.

Daily bump.

libstdc++: Remove stray change from previous commit

There is a stray change (introducing a bogus line at the top) that
came via 2babbb6760c43bcd803a5e168ef5ecb0be8a5121; remove that again.

* doc/xml/manual/policy_data_structures_biblio.xml: Remove
stray change.

libstdc++: Switch www.cs.princeton.edu to https

* doc/xml/manual/policy_data_structures_biblio.xml: Switch
www.cs.princeton.edu to https.
* doc/html/manual/policy_data_structures.html: Regenerate.

Check for more missing math decls on vxworks.

Use the GLIBCXX_CHECK_MATH_DECL macro to check for the full list of
vxworks math decls.

libstdc++-v3/ChangeLog

* crossconfig.m4 (<*-vxworks>): Check for more math decls.
* configure: Rebuild.

coroutines: Avoid functions with unlowered coroutine trees [PR95087].

Diagnosing bad uses of 'return' in coroutines is somewhat
tricky, since the user can use the keyword before we know
that the function is a coroutine (where such returns are not
permitted).  At present, we are just doing a check for any
use of 'return' and erroring on that.  However, we can't then
pass the function body on, since it will contain unlowered
coroutine trees.

This avoids the issue by dropping the entire function body
under that circumstance.  We could do better (for 11) but
this is intended to allow back-port of other fixes to 10.

gcc/cp/ChangeLog:

PR c++/95087
* coroutines.cc (morph_fn_to_coro): If we see an
early fatal error, drop the erroneous function body.

gcc/testsuite/ChangeLog:

PR c++/95087
* g++.dg/coroutines/co-return-syntax-08-bad-return.C:
Adjust the testcase to do the compile (rather than an
-fsyntax-only parse).

contrib: Add v850e1-elf to config-list.mk

This comment was added in SVN r173410, v850e1-* was added to config.sub
in SVN r174691 (around 2011).  So it should no longer apply.

contrib/ChangeLog:

* config-list.mk (LIST): Add v850e1-elf.

contrib: Add or1k-elf, or1k-linux-*, and or1k-rtems to config-list.mk

Support for OpenRISC target was added in SVN r265963.

contrib/ChangeLog:

* config-list.mk (LIST): Add or1k-elf, or1k-linux-*, and or1k-rtems.

contrib: Remove arm-wrs-vxworks from config-list.mk

Support for arm-wrs-vxworks was removed in git r10-4684.

contrib/ChangeLog:

* config-list.mk (LIST): Remove arm-wrs-vxworks.

contrib: Remove cris-linux and crisv32-* from config-list.mk

Support for crisv32-*-* and cris-*-linux* was removed in git r11-214.

contrib/ChangeLog:

* config-list.mk (LIST): Remove cris-linux, crisv32-elf, and
crisv32-linux.

coroutines: Remove up some unused values.

The build_new_method_call allows us to inspect the
function decl used.  In most cases, this is not used
and we can just set the parm to NULL.

gcc/cp/ChangeLog:

* coroutines.cc (build_co_await): Remove unused
variable.
(finish_co_await_expr): Likewise.
(finish_co_yield_expr): Likewise; revise comment.

Fix execute/20071219-1.c regression on H8 due to loss of REG_INC notes in peephole2.

gcc/
* lra.c (add_auto_inc_notes): Remove function.
* reload1.c (add_auto_inc_notes): Similarly.  Move into...
* rtlanal.c (add_auto_inc_notes): New function.
* rtl.h (add_auto_inc_notes): Add prototype.
* recog.c (peep2_attempt): Scan and add REG_INC notes to new insns
as needed.

Cleanup indexable tree streaming.

gcc/

* lto-section-out.c (lto_output_decl_index): Remove.
(lto_output_field_decl_index): Move to lto-streamer-out.c
(lto_output_fn_decl_index): Move to lto-streamer-out.c
(lto_output_namespace_decl_index): Remove.
(lto_output_var_decl_index): Remove.
(lto_output_type_decl_index): Remove.
(lto_output_type_ref_index): Remove.
* lto-streamer-out.c (output_type_ref): Remove.
(lto_get_index): New function.
(lto_output_tree_ref): Remove.
(lto_indexable_tree_ref): New function.
(lto_output_var_decl_index): Move here from lto-section-out.c; simplify.
(lto_output_fn_decl_index): Move here from lto-section-out.c; simplify.
(stream_write_tree_ref): Update.
(lto_output_tree): Update.
* lto-streamer.h (lto_output_decl_index): Remove prototype.
(lto_output_field_decl_index): Remove prototype.
(lto_output_namespace_decl_index): Remove prototype.
(lto_output_type_decl_index): Remove prototype.
(lto_output_type_ref_index): Remove prototype.
(lto_output_var_decl_index): Move.
(lto_output_fn_decl_index): Move

contrib: Add pru-elf to config-list.mk

Support for the TI PRU target was added in SVN r272202.

contrib/ChangeLog:

* config-list.mk (LIST): Add pru-elf.

Finalization depends on the expression, not on the component.

This patch fixes a 8/9/10/11 regression, where finalized types
were not finalized (and deallocated), which led to memory
leaks.

gcc/fortran/ChangeLog:

2020-05-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/94361
* class.c (finalize_component): Use expr->finalized instead of
comp->finalized.
* gfortran.h (gfc_component): Remove finalized member.
(gfc_expr): Add it here instead.

gcc/testsuite/ChangeLog:

2020-05-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/94361
* gfortran.dg/finalize_28.f90: Adjusted free counts.
* gfortran.dg/finalize_33.f90: Likewise.
* gfortran.dg/finalize_34.f90: Likewise.
* gfortran.dg/finalize_35.f90: New test.

expr: Fix fallout from optimize store_expr from STRING_CST [PR95052]

> Can't hurt, and debugging the assert tripping is likely a hell of a lot easier
> than debugging the resultant incorrect code.   So if it passes, then I'd say go
> for it.

Testing passed, so I've committed it with those asserts (and thankfully I've
added them!) but it apparently broke Linux kernel build on arm.

The problem is that if the STRING_CST is very short, while the full object
has BLKmode, the short string could very well have
QImode/HImode/SImode/DImode and in that case it wouldn't take the path that
copies the string and then clears the remaining space, but different paths
in which it will ICE because of those asserts and without those it would
just emit wrong-code.

The following patch fixes it by enforcing BLKmode for the string MEM, even
if it is short, so that we copy it and memset the rest.

2020-05-31  Jakub Jelinek  <jakub@redhat.com>

PR middle-end/95052
* expr.c (store_expr): For shortedned_string_cst, ensure temp has
BLKmode.

* gcc.dg/pr95052.c: New test.

Disable brabc/brabs patterns as their length computation is horribly broken and leads to incorrect code generation.

* config/h8300/jumpcall.md (brabs, brabc): Disable patterns.

Daily bump.

RISC-V: Optimize si to di zero-extend followed by left shift.

This is potentially a sequence of 3 shifts, we which optimize to a sequence
of 2 shifts.  This can happen when unsigned int is used for array indexing.

gcc/
* config/riscv/riscv.md (zero_extendsidi2_shifted): New.

gcc/testsuite/
* gcc.target/riscv/zero-extend-5.c: New.

Ability to build the GNAT runtime with project files

This change add project files to provide the ability to rebuild the
runtime with gprbuild after setup-rts is called.

gcc/ada/

* Makefile.rtl (ADA_INCLUDE_SRCS): Replace Makefile.adalib by
libada.gpr and associated project files.
(g-debpoo.o): Add missing rule to ensure subprograms are not reordered.
(setup-rts): Add generation of libgnat/libgnarl.lst.
(LIBGNAT_SRCS): Remove thread.c which is part of libgnarl.
* tracebak.c, tb-gcc.c: Merged the two files to simplify dependencies.
* libgnarl/libgnarl.gpr, libgnat/libada.gpr,
libgnat/libgnat.gpr, libgnat/libgnat_common.gpr: New files.
* doc/gnat_ugn/the_gnat_compilation_model.rst: Makefile.adalib
replaced by libada.gpr.
* libgnat/system-mingw.ads: Remove obsolete comment.
* gcc-interface/Makefile.in: Remove dependency on tb-gcc.c.

PR fortran/95373 - ICE in build_reference_type, at tree.c:7942

The use of KIND, LEN, RE, and IM inquiry references for applicable intrinsic
types is valid only for suffienctly new Fortran standards.  Add appropriate
checks in the appropriate place.

2020-05-30  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
PR fortran/95373
* primary.c (is_inquiry_ref): Move validity check of inquiry
references against selected Fortran standard from here...
(gfc_match_varspec) ...to here.

gcc/testsuite/
PR fortran/95373
* gfortran.dg/pr95373_1.f90: Adjust error messages.
* gfortran.dg/pr95373_2.f90: Adjust error message.

PR fortran/95090 - ICE: identifier overflow

Implement buffer overrun check for temporary that holds mangled names.

2020-05-30  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
PR fortran/95090
* class.c (get_unique_type_string): Use buffer overrun check.

coroutines: Fix unused value found by static analysis.

This fixes up the zero-initialization of the coro frame pointer
to avoid an unused assigned value, spotted by Martin Liska with
static analysis.

gcc/cp/ChangeLog:

* coroutines.cc (morph_fn_to_coro): Revise initialization
of the frame pointer to avoid an unused value.

openmp: omp_alloc(0, ...) should return NULL.

2020-05-30  Jakub Jelinek  <jakub@redhat.com>

* allocator.c (omp_alloc): For size == 0, return NULL early.

* testsuite/libgomp.c-c++-common/alloc-4.c: New test.

gcc/config/i386/mingw32.h: Ensure `-lmsvcrt` precede `-lkernel32`

This is necessary as libmsvcrt.a is not a pure import library, but
also contains some functions that invoke others in KERNEL32.DLL.

gcc/
* config/i386/mingw32.h (REAL_LIBGCC_SPEC): Insert -lkernel32
after -lmsvcrt. This is necessary as libmsvcrt.a is not a pure
import library, but also contains some functions that invoke
others in KERNEL32.DLL.

Signed-off-by: Liu Hao <lh_mouse@126.com>
Signed-off-by: Jonathan Yong <10walls@gmail.com>

c++: satisfaction value of type typedef to bool [PR95386]

In the testcase below, the satisfaction value of fn1<int>'s constraint
is INTEGER_CST '1' of type BOOLEAN_TYPE value_type, which is a typedef
to the standard boolean_type_node.  But satisfaction_value expects to
see exactly boolean_true_node or integer_one_node, which this value is
neither, causing us to trip over the assert therein.

This patch changes satisfaction_value to accept INTEGER_CST of any
boolean type.

gcc/cp/ChangeLog:

PR c++/95386
* constraint.cc (satisfaction_value): Accept INTEGER_CST of any
boolean type.

gcc/testsuite/ChangeLog:

PR c++/95386
* g++.dg/concepts/pr95386.C: New test.

Daily bump.

rs6000: Prefer VSX insns over VMX ones (part 1: perm and mrg)

There are various VSX insns that do the same job as (older) AltiVec
insns, just with a wider range of possible registers.  Many patterns
for such insns have the "v" alternative before the "wa" alternative,
which makes the output less readable than possible (since vs32 is v0,
and most insns before or after this insn will be VSX as well).

This changes the define_insns for the mrg and perm machine instructions
to prefer the VSX form.  No behaviour change.  Only one testcase needed
a little adjustment as well.

2020-05-29  Segher Boessenkool  <segher@kernel.crashing.org>

* config/rs6000/altivec.md (altivec_vmrghw_direct): Prefer VSX form.
(altivec_vmrglw_direct): Ditto.
(altivec_vperm_<mode>_direct): Ditto.
(altivec_vperm_v8hiv16qi): Ditto.
(*altivec_vperm_<mode>_uns_internal): Ditto.
(*altivec_vpermr_<mode>_internal): Ditto.
(vperm_v8hiv4si): Ditto.
(vperm_v16qiv8hi): Ditto.

gcc/testsuite/
* gcc.target/powerpc/vsx-vector-6.p9.c: Allow xxperm as perm as well.

c++: P0848R3 and member function templates [PR95181]

When comparing two special member function templates to see if one hides
the other (as per P0848R3), we need to check satisfaction which we can't
do on templates.  So this patch makes add_method skip the eligibility
test on member function templates and just lets them coexist.

gcc/cp/ChangeLog:

PR c++/95181
* class.c (add_method): Let special member function templates
coexist if they are not equivalently constrained, or in a class
template.

gcc/testsuite/ChangeLog:

PR c++/95181
* g++.dg/concepts/pr95181.C: New test.
* g++.dg/concepts/pr95181-2.C: New test.

Co-authored-by: Jason Merrill <jason@redhat.com>

c++: Template template parameter in constraint [PR95371]

any_template_parm_r was assuming that the DECL_TEMPLATE_RESULT of a template
will have a suitable TEMPLATE_INFO from which we can look at the generic
arguments for that template.  But that wasn't true for a template template
parameter; this patch makes it so.

gcc/cp/ChangeLog:

PR c++/95371
* pt.c (process_template_parm): Set DECL_TEMPLATE_INFO
on the DECL_TEMPLATE_RESULT.

gcc/testsuite/ChangeLog:

PR c++/95371
* g++.dg/cpp2a/concepts-ttp1.C: New test.

Simplify tree streaming.

this patch cleans up tree streaming.  The code is prepared to stream nested
trees, but we only handle flat trees. As a result we have quite heavy function
to stream in/out tree reference which is used many times and shows up in
profile.

This patch adds stream_write_tree_ref/stream_read_tree_ref which is used to
stream references to trees that are required to exist in the cache or be
indexable.

The actual implementation is just a first cut.  I would like to make it more
compact. We used to stream 2 byte tag (as UHWI) + UHWI representing the index.
Now we stream one UHWI that represent type of reference + index for references
to cache, but still two integers for references to global stream.  This is
becaue the abstraction is not very helpful here and I want to clean this up
incrementally.

I would also like to get rid of the ref_p parameters which seems unnecessary for
flat streams.

This reduces around 7% of global stream, 3% when compressed.
More reduction will happen once the format is sanitized a bit.

from
[WPA] read 4597161 unshared trees
[WPA] read 2937414 mergeable SCCs of average size 1.364280
[WPA] 8604617 tree bodies read in total
[WPA] tree SCC table: size 524287, 247507 elements, collision ratio: 0.377468
[WPA] tree SCC max chain length 2 (size 1)
[WPA] Compared 2689907 SCCs, 184 collisions (0.000068)
[WPA] Merged 2689890 SCCs
[WPA] Merged 3722677 tree bodies
[WPA] Merged 632040 types
...
[WPA] Compression: 88124141 input bytes, 234906430 uncompressed bytes (ratio: 2.665631)
[WPA] Size of mmap'd section decls: 88124141 bytes
...
[WPA] Compression: 113758813 input bytes, 316149514 uncompressed bytes (ratio: 2.779121)
[WPA] Size of mmap'd section decls: 88124141 bytes
[WPA] Size of mmap'd section function_body: 14485721 bytes

to

[WPA] read 4597174 unshared trees
[WPA] read 2937413 mergeable SCCs of average size 1.364280
[WPA] 8604629 tree bodies read in total
[WPA] tree SCC table: size 524287, 247509 elements, collision ratio: 0.377458
[WPA] tree SCC max chain length 2 (size 1)
[WPA] Compared 2689904 SCCs, 183 collisions (0.000068)
[WPA] Merged 2689888 SCCs
[WPA] Merged 3722675 tree bodies
[WPA] Merged 632041 types
....
[WPA] Size of mmap'd section decls: 86177293 bytes
[WPA] Compression: 86177293 input bytes, 217625095 uncompressed bytes (ratio: 2.525318)
....
[WPA] Compression: 111682269 input bytes, 297228756 uncompressed bytes (ratio: 2.661378)
[WPA] Size of mmap'd section decls: 86177293 bytes
[WPA] Size of mmap'd section function_body: 14349032 bytes

gcc/ChangeLog:

* lto-streamer-in.c (streamer_read_chain): Move here from
tree-streamer-in.c.
(stream_read_tree_ref): New.
(lto_input_tree_1): Simplify.
* lto-streamer-out.c (stream_write_tree_ref): New.
(lto_write_tree_1): Simplify.
(lto_output_tree_1): Simplify.
(DFS::DFS_write_tree): Simplify.
(streamer_write_chain): Move here from tree-stremaer-out.c.
* lto-streamer.h (lto_output_tree_ref): Update prototype.
(stream_read_tree_ref): Declare
(stream_write_tree_ref): Declare
* tree-streamer-in.c (streamer_read_chain): Update to use
stream_read_tree_ref.
(lto_input_ts_common_tree_pointers): Likewise.
(lto_input_ts_vector_tree_pointers): Likewise.
(lto_input_ts_poly_tree_pointers): Likewise.
(lto_input_ts_complex_tree_pointers): Likewise.
(lto_input_ts_decl_minimal_tree_pointers): Likewise.
(lto_input_ts_decl_common_tree_pointers): Likewise.
(lto_input_ts_decl_with_vis_tree_pointers): Likewise.
(lto_input_ts_field_decl_tree_pointers): Likewise.
(lto_input_ts_function_decl_tree_pointers): Likewise.
(lto_input_ts_type_common_tree_pointers): Likewise.
(lto_input_ts_type_non_common_tree_pointers): Likewise.
(lto_input_ts_list_tree_pointers): Likewise.
(lto_input_ts_vec_tree_pointers): Likewise.
(lto_input_ts_exp_tree_pointers): Likewise.
(lto_input_ts_block_tree_pointers): Likewise.
(lto_input_ts_binfo_tree_pointers): Likewise.
(lto_input_ts_constructor_tree_pointers): Likewise.
(lto_input_ts_omp_clause_tree_pointers): Likewise.
* tree-streamer-out.c (streamer_write_chain): Update to use
stream_write_tree_ref.
(write_ts_common_tree_pointers): Likewise.
(write_ts_vector_tree_pointers): Likewise.
(write_ts_poly_tree_pointers): Likewise.
(write_ts_complex_tree_pointers): Likewise.
(write_ts_decl_minimal_tree_pointers): Likewise.
(write_ts_decl_common_tree_pointers): Likewise.
(write_ts_decl_non_common_tree_pointers): Likewise.
(write_ts_decl_with_vis_tree_pointers): Likewise.
(write_ts_field_decl_tree_pointers): Likewise.
(write_ts_function_decl_tree_pointers): Likewise.
(write_ts_type_common_tree_pointers): Likewise.
(write_ts_type_non_common_tree_pointers): Likewise.
(write_ts_list_tree_pointers): Likewise.
(write_ts_vec_tree_pointers): Likewise.
(write_ts_exp_tree_pointers): Likewise.
(write_ts_block_tree_pointers): Likewise.
(write_ts_binfo_tree_pointers): Likewise.
(write_ts_constructor_tree_pointers): Likewise.
(write_ts_omp_clause_tree_pointers): Likewise.
(streamer_write_tree_body): Likewise.
(streamer_write_integer_cst): Likewise.
* tree-streamer.h (streamer_read_chain):Declare.
(streamer_write_chain):Declare.
(streamer_write_tree_body): Update prototype.
(streamer_write_integer_cst): Update prototype.

Avoid nested save_CFLAGS and save_LDFLAGS

Avoid nested save_CFLAGS and save_LDFLAGS by replacing save_CFLAGS and
save_LDFLAGS with cet_save_CFLAGS and cet_save_LDFLAGS in cet.m4.

config/

PR bootstrap/95413
* cet.m4: Replace save_CFLAGS and save_LDFLAGS with
cet_save_CFLAGS and cet_save_LDFLAGS.

gcc/

PR bootstrap/95413
* configure: Regenerated.

libatomic/

PR bootstrap/95413
* configure: Regenerated.

libbacktrace/

PR bootstrap/95413
* configure: Regenerated.

libcc1/

PR bootstrap/95413
* configure: Regenerated.

libcpp/

PR bootstrap/95413
* configure: Regenerated.

libdecnumber/

PR bootstrap/95413
* configure: Regenerated.

libgcc/

PR bootstrap/95413
* configure: Regenerated.

libgfortran/

PR bootstrap/95413
* configure: Regenerated.

libgomp/

PR bootstrap/95413
* configure: Regenerated.

libiberty/

PR bootstrap/95413
* configure: Regenerated.

libitm/

PR bootstrap/95413
* configure: Regenerated.

libobjc/

PR bootstrap/95413
* configure: Regenerated.

libphobos/

PR bootstrap/95413
* configure: Regenerated.

libquadmath/

PR bootstrap/95413
* configure: Regenerated.

libsanitizer/

PR bootstrap/95413
* configure: Regenerated.

libssp/

PR bootstrap/95413
* configure: Regenerated.

libstdc++-v3/

PR bootstrap/95413
* configure: Regenerated.

libvtv/

PR bootstrap/95413
* configure: Regenerated.

lto-plugin/

PR bootstrap/95413
* configure: Regenerated.

zlib/

PR bootstrap/95413
* configure: Regenerated.

PR fortran/95090 - ICE: identifier overflow

The initial fix for this PR uncovered several latent issues with further
too small string buffers which showed up only when testing on i686.
Provide sufficiently large temporaries.

2020-05-29  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
PR fortran/95090
* class.c (get_unique_type_string): Enlarge temporary for
name-mangling.  Use strncpy to prevent buffer overrun.
(get_unique_hashed_string): Enlarge temporary.
(gfc_hash_value): Enlarge temporary for name-mangling.

libgfortran: Export forgotten _gfortran_{,m,s}findloc{0,1}_c10 [PR95390]

I have noticed we don't export these 6 symbols and thus the testcase
below fails to link.

2020-05-29  Jakub Jelinek  <jakub@redhat.com>

PR libfortran/95390
* gfortran.dg/findloc_8.f90: New test.

* Makefile.am (i_findloc0_c): Add findloc0_i10.c.
(i_findloc1_c): Add findloc1_i10.c.
* gfortran.map (GFORTRAN_10.2): New symbol version, export
_gfortran_{,m,s}findloc{0,1}_c10 symbols.
* Makefile.in: Regenerated.
* generated/findloc0_c10.c: Generated.
* generated/findloc1_c10.c: Generated.

c++: Fix bogus -Wparentheses warning [PR95344]

Since r267272, which added location wrappers, cp_fold loses
TREE_NO_WARNING on a MODIFY_EXPR that finish_parenthesized_expr set, and
that results in a bogus -Wparentheses warning.

I.e., previously we had "b = 1" but now we have "VIEW_CONVERT_EXPR<bool>(b) = 1"
and cp_fold_maybe_rvalue folds away the location wrapper and so we do
2718             x = fold_build2_loc (loc, code, TREE_TYPE (x), op0, op1);
in cp_fold and the flag is lost.

PR c++/95344
* cp-gimplify.c (cp_fold) <case MODIFY_EXPR>: Don't set
TREE_THIS_VOLATILE here.
(cp_fold): Set it here along with TREE_NO_WARNING.

* c-c++-common/Wparentheses-2.c: New test.

c++: vptr ubsan and derived class [PR95311].

We weren't able to find OBJ_TYPE_REF_OBJECT walking through
OBJ_TYPE_REF_EXPR because we had folded away the ADDR_EXPR.

gcc/cp/ChangeLog:

PR c++/95311
PR c++/95221
* class.c (build_vfn_ref): Don't fold the INDIRECT_REF.

gcc/testsuite/ChangeLog:

PR c++/95311
* g++.dg/ubsan/vptr-16.C: New test.

contrib: Remove rs6000-ibm-aix5.3.0 from config-list.mk

contrib/ChangeLog:

* config-list.mk (LIST): Remove rs6000-ibm-aix5.3.0.

Error for missing change description in git_commit.py.

contrib/ChangeLog:

* gcc-changelog/git_commit.py: Find empty change descriptions.
* gcc-changelog/test_email.py: New test.
* gcc-changelog/test_patches.txt: New patch that tests that.

bugzilla-close-candidate.py: Fix sorting of branches.

Pushed to master.

maintainer-scripts/ChangeLog:

* bugzilla-close-candidate.py: Fix sorting of branches.

Fix parsing of SVN commits in PRs.

Tested and pushed to master.

maintainer-scripts/ChangeLog:

* bugzilla-close-candidate.py: Fix parsing of SVN revisions.
Fix skipping of PRs that contain Can be closed message.

c++: lambdas inside constraints [PR92652]

When parsing a constraint-expression, a requires-clause or a
requires-expression, we temporarily increment processing_template_decl
so that we always obtain template trees which we could later reduce via
substitution even when not inside a template.

But incrementing processing_template_decl when we're already inside a
template has the unintended side effect of shifting up the template
parameter levels of a lambda defined inside one of these constructs,
which leads to confusion later during substitution into the lambda.

This patch fixes this issue by incrementing processing_template_decl
during parsing of these constructs only if it is 0.

Passes 'make check-c++', and also tested by building cmcstl2, does this
look OK to commit after a full bootstrap/regtest?

gcc/cp/ChangeLog:

PR c++/92652
PR c++/93698
PR c++/94128
* parser.c (cp_parser_requires_clause_expression): Temporarily
increment processing_template_decl only if it is 0.
(cp_parser_constraint_expression): Likewise.
(cp_parser_requires_expression): Likewise.

gcc/testsuite/ChangeLog:

PR c++/92652
PR c++/93698
PR c++/94128
* g++.dg/cpp2a/concepts-lambda8.C: New test.
* g++.dg/cpp2a/concepts-lambda9.C: New test.
* g++.dg/cpp2a/concepts-lambda10.C: New test.

c++: constexpr ctor with RANGE_EXPR index [PR95241]

In the testcase below, the CONSTRUCTOR for 'field' contains a RANGE_EXPR
index:

  {{aggr_init_expr<...>, [1...2]={.off=1}}}

but get_or_insert_ctor_field isn't prepared to handle looking up a
RANGE_EXPR index.

This patch adds limited support to get_or_insert_ctor_field for looking
up a RANGE_EXPR index.  The limited scope of this patch should make it
more suitable for backporting, and more extensive support would be
needed only to handle self-modifying CONSTRUCTORs that contain a
RANGE_EXPR index, but I haven't yet been able to come up with a testcase
that actually creates such a CONSTRUCTOR.

gcc/cp/ChangeLog:

PR c++/95241
* constexpr.c (get_or_insert_ctor_field): Add limited support
for RANGE_EXPR index lookups.

gcc/testsuite/ChangeLog:

PR c++/95241
* g++.dg/cpp0x/constexpr-array25.C: New test.

Port bugzilla-close-candidate script to git.

maintainer-scripts/ChangeLog:

* bugzilla-close-candidate.py: Support both SVN and GIT messages
in PRs. Remove need of usage of the bugzilla API key.