Commit Graph

9 Commits

Author SHA1 Message Date
Larisse Voufo 697b32a0cb Improvement on sized deallocation from r230160:
Do not declare sized deallocation functions dependently on whether it is found in global scope. Instead, enforce the branching in emitted code by (1) declaring the functions extern_weak and (2) emitting sized delete expressions as a branching between both forms delete.

llvm-svn: 230580
2015-02-25 23:48:43 +00:00
Larisse Voufo a65298af65 Relax the requirement on sized deallocation a bit: Default on unsized delete if sized delete is not provided in global scope, and -fdefine-sized-deallocation option is disabled.
llvm-svn: 230160
2015-02-22 06:36:53 +00:00
Larisse Voufo 89088232b2 Add -fno-sized-deallocation option for completeness of fix in r229241 in documentation in r229818.
llvm-svn: 229950
2015-02-20 02:07:22 +00:00
Reid Kleckner 66abf2f92f Put the implicit weak sized deallocation funciton in C++14 in a comdat
Fixes PR22635.

llvm-svn: 229913
2015-02-19 21:01:34 +00:00
Larisse Voufo e990a3f60c Rename flags and options to match current naming: from -fdef-sized-delete to -fdefine-sized-deallocation, and from DefaultSizedDelete to DefineSizedDeallocation.
llvm-svn: 229597
2015-02-18 01:04:10 +00:00
Larisse Voufo 5526f4f094 Revise the implementation logic of sized deallocation: Do not automatically generate weak definitions of the sized operator delete (in terms of unsized operator delete). Instead, provide the funcitonality via a new compiler flag, -fdef-sized-delete.
The current implementation causes link-time ODR violations when the delete symbols are exported into the dynamic table.

llvm-svn: 229241
2015-02-14 05:42:57 +00:00
Richard Smith f03bd30854 PR17983: Fix crasher bug in C++1y mode when performing a non-global array
delete on a class which has no array cookie and has no class-specific operator
new.

llvm-svn: 196488
2013-12-05 08:30:59 +00:00
Richard Smith b47c36f8e1 C++1y sized deallocation: if we have a use, but not a definition, of a sized
deallocation function (and the corresponding unsized deallocation function has
been declared), emit a weak discardable definition of the function that
forwards to the corresponding unsized deallocation.

This allows a C++ standard library implementation to provide both a sized and
an unsized deallocation function, where the unsized one does not just call the
sized one, for instance by putting both in the same object file within an
archive.

llvm-svn: 194055
2013-11-05 09:12:18 +00:00
Richard Smith 1cdec019e8 Implement C++1y sized deallocation (n3778). This is not enabled by -std=c++1y;
instead, it's enabled by the -cc1 flag -fsized-deallocation, until we sort out
the backward-compatibility issues.

llvm-svn: 191629
2013-09-29 04:40:38 +00:00