Jonathan Wakely
bc9efeab61
PR libstdc++/79190 add fallback aligned_alloc implementation
...
libstdc++-v3:
PR libstdc++/79190
* libsupc++/del_opa.cc (operator delete(void*, std::align_val_t))
[!_GLIBCXX_HAVE_ALIGNED_ALLOC && !_GLIBCXX_HAVE_POSIX_MEMALIGN
&& !_GLIBCXX_HAVE_MEMALIGN && !_GLIBCXX_HAVE__ALIGNED_MALLOC]:
Retrieve original pointer value allocated by malloc.
* libsupc++/new_opa.cc [!_GLIBCXX_HAVE_ALIGNED_ALLOC
&& !_GLIBCXX_HAVE_POSIX_MEMALIGN && !_GLIBCXX_HAVE_MEMALIGN
&& !_GLIBCXX_HAVE__ALIGNED_MALLOC] (aligned_alloc(size_t, size_t)):
Define, adjusting pointer value allocated by malloc and storing for
retrieval by operator delete.
gcc/testsuite:
PR libstdc++/79190
* g++.dg/cpp1z/aligned-new3.C: Replace operator new so behaviour
matches replaced operator delete.
From-SVN: r244933
2017-01-26 14:30:45 +00:00
Jakub Jelinek
cbe34bb5ed
Update copyright years.
...
From-SVN: r243994
2017-01-01 13:07:43 +01:00
Bernd Edlinger
a0019047b8
re PR libstdc++/78110 (freestanding libstdc++ fails to compile)
...
2016-10-26 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR libstdc++/78110
* libsupc++/new_opa.cc: Don't include <malloc.h> in a free standing
environment. Declare memalign directly in that case.
From-SVN: r241591
2016-10-26 17:26:00 +00:00
Jonathan Wakely
84c08ec96a
Replace modulus with mask operation in over-aligned new
...
2016-09-16 Jonathan Wakely <jwakely@redhat.com>
Marc Glisse <marc.glisse@inria.fr>
* libsupc++/new_opa.cc [_GLIBCXX_HAVE_ALIGNED_ALLOC]
(operator new(size_t, align_val_t)): Replace modulus operator with
mask.
Co-Authored-By: Marc Glisse <marc.glisse@inria.fr>
From-SVN: r240192
2016-09-16 19:09:14 +01:00
Jonathan Wakely
426042f5f2
Adjust arguments to aligned_alloc or posix_memalign
...
* libsupc++/new_opa.cc [_GLIBCXX_HAVE_POSIX_MEMALIGN] (aligned_alloc):
Increase alignment if less than sizeof(void*).
[_GLIBCXX_HAVE_ALIGNED_ALLOC] (operator new(size_t, align_val_t)):
Increase size if not a multiple of alignment.
From-SVN: r240187
2016-09-16 13:11:19 +01:00
Jason Merrill
af63ba4b30
Implement P0035R4, C++17 new of over-aligned types.
...
gcc/cp/
* cp-tree.h (enum cp_tree_index): Add CPTI_ALIGN_TYPE.
(align_type_node): New macro.
* call.c (build_operator_new_call): Handle C++17 aligned new.
(second_parm_is_size_t, build_op_delete_call): Likewise.
(non_placement_deallocation_fn_p): Likewise. Rename to
usual_deallocation_fn_p.
(aligned_allocation_fn_p, aligned_deallocation_fn_p): New.
* decl.c (cxx_init_decl_processing): Add aligned new support.
* init.c (type_has_new_extended_alignment): New.
(build_new_1): Handle aligned new.
* tree.c (vec_copy_and_insert): New.
gcc/c-family/
* c.opt: Add -faligned-new and -Waligned-new.
* c-common.c (max_align_t_align): Split out from...
(cxx_fundamental_alignment_p): ...here.
* c-common.h: Declare it.
* c-cppbuiltin.c (c_cpp_builtins): Handle aligned new.
libstdc++-v3/
* libsupc++/new: Declare aligned new/delete operators.
* config/abi/pre/gnu.ver: Export them.
* configure.ac: Check for aligned_alloc, posix_memalign, memalign,
_aligned_malloc.
* libsupc++/new_opa.cc: New.
* libsupc++/new_opant.cc: New.
* libsupc++/new_opva.cc: New.
* libsupc++/new_opva.cc: New.
* libsupc++/del_opa.cc: New.
* libsupc++/del_opant.cc: New.
* libsupc++/del_opsa.cc: New.
* libsupc++/del_opva.cc: New.
* libsupc++/del_opvant.cc: New.
* libsupc++/del_opvsa.cc: New.
* libsupc++/Makefile.am: Build them.
From-SVN: r240056
2016-09-09 17:22:15 -04:00
