Jonathan Wakely [Fri, 17 Mar 2017 19:28:42 +0000 (19:28 +0000)]
Backport <codecvt> fixes from trunk
Fix alignment bugs in std::codecvt_utf16
* src/c++11/codecvt.cc (range): Add non-type template parameter and
define oerloaded operators for reading and writing code units.
(range<Elem, false>): Define partial specialization for accessing
wide characters in potentially unaligned byte ranges.
(ucs2_span(const char16_t*, const char16_t*, ...))
(ucs4_span(const char16_t*, const char16_t*, ...)): Change parameters
to range<const char16_t, false> in order to avoid unaligned reads.
(__codecvt_utf16_base<char16_t>::do_out)
(__codecvt_utf16_base<char32_t>::do_out)
(__codecvt_utf16_base<wchar_t>::do_out): Use range specialization for
unaligned data to avoid unaligned writes.
(__codecvt_utf16_base<char16_t>::do_in)
(__codecvt_utf16_base<char32_t>::do_in)
(__codecvt_utf16_base<wchar_t>::do_in): Likewise for writes. Return
error if there are unprocessable trailing bytes.
(__codecvt_utf16_base<char16_t>::do_length)
(__codecvt_utf16_base<char32_t>::do_length)
(__codecvt_utf16_base<wchar_t>::do_length): Pass arguments of type
range<const char16_t, false> to span functions.
* testsuite/22_locale/codecvt/codecvt_utf16/misaligned.cc: New test.
PR libstdc++/80041 fix codecvt_utf16<wchar_t> to use UTF-16 not UTF-8
PR libstdc++/80041
* src/c++11/codecvt.cc (__codecvt_utf16_base<wchar_t>::do_out)
(__codecvt_utf16_base<wchar_t>::do_in): Convert char arguments to
char16_t to work with UTF-16 instead of UTF-8.
* testsuite/22_locale/codecvt/codecvt_utf16/80041.cc: New test.
Fix encoding() and max_length() values for codecvt facets
* src/c++11/codecvt.cc (codecvt<char16_t, char, mbstate_t>)
(codecvt<char32_t, char, mbstate_t>, __codecvt_utf8_base<char16_t>)
(__codecvt_utf8_base<char32_t>, __codecvt_utf8_base<wchar_t>)
(__codecvt_utf16_base<char16_t>, __codecvt_utf16_base<char32_t>)
(__codecvt_utf16_base<wchar_t>, __codecvt_utf8_utf16_base<char16_t>)
(__codecvt_utf8_utf16_base<char32_t>)
(__codecvt_utf8_utf16_base<wchar_t>): Fix do_encoding() and
do_max_length() return values.
* testsuite/22_locale/codecvt/codecvt_utf16/members.cc: New test.
* testsuite/22_locale/codecvt/codecvt_utf8/members.cc: New test.
* testsuite/22_locale/codecvt/codecvt_utf8_utf16/members.cc: New test.
PR libstdc++/79980
* include/bits/locale_conv.h (__do_str_codecvt): Set __count on
error path.
* src/c++11/codecvt.cc (operator&=, operator|=, operator~): Overloads
for manipulating codecvt_mode values.
(read_utf16_bom): Compare input to BOM constants instead of integral
constants that depend on endianness. Take mode parameter by
reference and adjust it, to distinguish between no BOM present and
UTF-16BE BOM present.
(ucs4_in, ucs2_span, ucs4_span): Adjust calls to read_utf16_bom.
(surrogates): New enumeration type.
(utf16_in, utf16_out): Add surrogates parameter to choose between
UTF-16 and UCS2 behaviour.
(utf16_span, ucs2_span): Use std::min not std::max.
(ucs2_out): Use std::min not std::max. Disallow surrogate pairs.
(ucs2_in): Likewise. Adjust calls to read_utf16_bom.
* testsuite/22_locale/codecvt/codecvt_utf16/79980.cc: New test.
* testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: New test.
PR libstdc++/79511 fix endianness of UTF-16 data
PR libstdc++/79511
* src/c++11/codecvt.cc (write_utf16_code_point): Don't write 0xffff
as a surrogate pair.
(__codecvt_utf8_utf16_base<char32_t>::do_in): Use native endianness
for internal representation.
(__codecvt_utf8_utf16_base<wchar_t>::do_in): Likewise.
* testsuite/22_locale/codecvt/codecvt_utf8_utf16/79511.cc: New test.
re PR libstdc++/80034 (unqualified calls to std::distance in std::list::sort)
PR libstdc++/80034
* include/bits/list.tcc (merge(list&&)): Use const for the size_t
in the function and in the catch-block, qualify uses of std::distance.
(merge(list&&, _StrictWeakOrdering)): Likewise.
* testsuite/23_containers/list/operations/80034.cc: New.
Bill Schmidt [Wed, 22 Feb 2017 22:54:56 +0000 (22:54 +0000)]
backport: re PR target/79261 (vec_xxpermdi appears to have endian issues)
[gcc]
2017-02-22 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-02-17 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR target/79261
* config/rs6000/rs6000.c (rs6000_expand_ternop_builtin): Add
support for CODE_FOR_vsx_xxpermdi_v2d[fi]_be.
* config/rs6000/rs6000.md (reload_gpr_from_vsx<mode>): Call
generator for vsx_xxpermdi_<mode>_be.
* config/rs6000/vsx.md (vsx_xxpermdi_<mode>): Remove logic to
force big-endian semantics.
(vsx_xxpermdi_<mode>_be): New define_expand with same
implementation as previous version of vsx_xxpermdi_<mode>.
[gcc/testsuite]
2017-02-22 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline
2017-02-17 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR target/79261
* gcc.target/powerpc/vec-xxpermdi.c: New file.
Carl Love [Thu, 16 Feb 2017 20:59:20 +0000 (20:59 +0000)]
backport: re PR target/79545 (gcc[5/6]: RS6000, xvcvuxdsp and xvcvsxdsp RTL defines have wrong type)
gcc/ChangeLog:
2017-02-16 Carl Love <cel@us.ibm.com>
Backport from mainline commit r245460 on 2017-02-14
PR 79545
* config/rs6000/rs6000.c: Add case statement entry to make the xvcvuxdsp
built-in argument unsigned.
* config/rs6000/vsx.md: Fix the source and return operand types so they
match the instruction definitions from the ISA document. Fix typo
in the instruction generation for the (define_insn "vsx_xvcvuxdsp"
statement.
gcc/testsuite/ChangeLog:
2017-01-16 Carl Love <cel@us.ibm.com>
Backport from mainline commit r245460 on 2017-02-14
PR 79545
* gcc.target/powerpc/vsx-builtin-3.c: Add missing test case for the
xvcvsxdsp and xvcvuxdsp instructions.
Jonathan Wakely [Tue, 14 Feb 2017 21:17:34 +0000 (21:17 +0000)]
PR69321 fix any_cast<T>(any*) for non-copyable T
Backport from mainline
2017-01-20 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/69321
* include/experimental/any (__any_caster): Avoid instantiating
manager function for types that can't be stored in any.
* testsuite/experimental/any/misc/any_cast.cc: Likewise.
* testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
Jonathan Wakely [Tue, 14 Feb 2017 21:17:23 +0000 (21:17 +0000)]
PR78702 fix accessibility of locale::facet::__shim
Backport from mainline
2017-01-16 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/78702
* include/bits/locale_classes.h (locale::facet::__shim): Change from
private to protected.
* src/c++11/cxx11-shim_facets.cc (__shim_accessor): Define helper to
make locale::facet::__shim accessible.
Jonathan Wakely [Tue, 14 Feb 2017 21:17:11 +0000 (21:17 +0000)]
PR78273 fix count to work with partitioning function
Backport from mainline
2017-01-11 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/78273
* include/bits/stl_map.h (map::count<_Kt>(const _Kt&)): Don't assume
the heterogeneous comparison can only find one match.
* include/bits/stl_set.h (set::count<_Kt>(const _Kt&)): Likewise.
* testsuite/23_containers/map/operations/2.cc: Test count works with
comparison function that just partitions rather than sorting.
* testsuite/23_containers/set/operations/2.cc: Likewise.
Carl Love [Mon, 6 Feb 2017 17:40:29 +0000 (17:40 +0000)]
backport: dated 2017-01-26 and 2017-01-25 respectively
gcc/ChangeLog:
2017-02-06 Carl Love <cel@us.ibm.com>
Backport of two commits from mainline, r244943 and r244904,
dated 2017-01-26 and 2017-01-25 respectively
* config/rs6000/rs6000-c (altivec_overloaded_builtins): Fix order
of entries for ALTIVEC_BUILTIN_VEC_PACKS. Remove bogus entries
for P8V_BUILTIN_VEC_VGBBD.
gcc/testsuite/ChangeLog:
2017-02-06 Carl Love <cel@us.ibm.com>
* gcc.target/powerpc/builtins-3-p8.c: Add new testfile for missing
vec_packs built-in tests.
Jonathan Wakely [Wed, 1 Feb 2017 12:57:58 +0000 (12:57 +0000)]
PR78346 make <bits/predefined_ops.h> handle stashing iterators
PR libstdc++/78346
* include/bits/predefined_ops.h (_Iter_equals_iter): Store iterator
not its referent.
(_Iter_comp_to_iter): Likewise.
* testsuite/25_algorithms/search/78346.cc: New test.
Jonathan Wakely [Wed, 1 Feb 2017 12:18:43 +0000 (12:18 +0000)]
PR libstdc++/79254 fix exception-safety of std::string copy assignment
PR libstdc++/79254
* include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
(basic_string::operator=(const basic_string&)): If source object is
small just deallocate, otherwise perform new allocation before
making any changes.
* testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
Test exception-safety of copy assignment when allocator propagates.
* testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
Likewise.
* testsuite/util/testsuite_allocator.h (uneq_allocator::swap): Make
std::swap visible.
Richard Biener [Thu, 26 Jan 2017 13:08:43 +0000 (13:08 +0000)]
backport: [multiple changes]
2017-01-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2016-01-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/79034
* tree-call-cdce.c (shrink_wrap_one_built_in_call_with_conds):
Propagate out degenerate PHIs in the joiner.
* g++.dg/torture/pr79034.C: New testcase.
2016-11-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/78224
* tree-call-cdce.c (shrink_wrap_one_built_in_call_with_conds):
Split the fallthru edge in case its successor may have PHIs.
Do not free dominance info.
Richard Biener [Thu, 26 Jan 2017 08:16:37 +0000 (08:16 +0000)]
backport: [multiple changes]
2017-01-26 Richard Biener <rguenther@suse.de>
Backport from mainline
2016-09-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/77745
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
When removing redundant stores make sure to check compatibility
of the TBAA state for downstream accesses.
* tree-ssa-sccvn.c (visit_reference_op_store): Likewise for when
value-numbering virtual operands for store matches.
* g++.dg/torture/pr77745.C: New testcase.
2016-09-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/77768
* tree-ssa-sccvn.c (visit_reference_op_store): Properly deal
with stores to a place we know has a constant value.
* tree-vrp.c (set_defs_to_varying): New helper avoiding
writing to vr_const_varying.
(vrp_initialize): Call it.
(vrp_visit_stmt): Likewise.
(evrp_dom_walker::before_dom_children): Likewise.
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
Handle stores to readonly memory when removing redundant stores.
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