5 Commits

Author	SHA1	Message	Date
Erik Pilkington	2e4f5e629d	[Sema] Fix an assert when objc_externally_retained was applied to an unprototyped function ... rdar://58893199	2020-02-28 15:49:16 -08:00
Leonard Chan	c72aaf62d3	Recommit r359859 "[Attribute/Diagnostics] Print macro if definition is an attribute declaration" ... Updated with fix for read of uninitialized memory. llvm-svn: 360109	2019-05-07 03:20:17 +00:00
Leonard Chan	ef2dc25a96	Revert "[Attribute/Diagnostics] Print macro if definition is an attribute declaration" ... This reverts commit fc40cbd9d8. llvm-svn: 359859	2019-05-03 03:28:06 +00:00
Leonard Chan	fc40cbd9d8	[Attribute/Diagnostics] Print macro if definition is an attribute declaration ... If an address_space attribute is defined in a macro, print the macro instead when diagnosing a warning or error for incompatible pointers with different address_spaces. We allow this for all attributes (not just address_space), and for multiple attributes declared in the same macro. Differential Revision: https://reviews.llvm.org/D51329 llvm-svn: 359826	2019-05-02 20:38:14 +00:00
Erik Pilkington	1e36882b52	[ObjCARC] Add an new attribute, objc_externally_retained ... This attribute, called "objc_externally_retained", exposes clang's notion of pseudo-__strong variables in ARC. Pseudo-strong variables "borrow" their initializer, meaning that they don't retain/release it, instead assuming that someone else is keeping their value alive. If a function is annotated with this attribute, implicitly strong parameters of that function aren't implicitly retained/released in the function body, and are implicitly const. This is useful to expose for performance reasons, most functions don't need the extra safety of the retain/release, so programmers can opt out as needed. This attribute can also apply to declarations of local variables, with similar effect. Differential revision: https://reviews.llvm.org/D55865 llvm-svn: 350422	2019-01-04 18:33:06 +00:00