https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105413
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Iain Buclaw <ibuc...@gcc.gnu.org>: https://gcc.gnu.org/g:91418c42089cd1cbe71edcd6b2f5b26559819372 commit r13-1255-g91418c42089cd1cbe71edcd6b2f5b26559819372 Author: Iain Buclaw <ibuc...@gdcproject.org> Date: Thu Jun 23 18:24:07 2022 +0200 d: Add `@register' attribute to compiler and library. The `@register` attribute specifies that a local or `__gshared` variable is to be given a register storage-class in the C sense of the term, and will be placed into a register named `registerName`. The variable needs to boiled down to a data type that fits the target register. It also cannot have either thread-local or `extern` storage. It is an error to take the address of a register variable. PR d/105413 gcc/d/ChangeLog: * d-attribs.cc (d_handle_register_attribute): New function. (d_langhook_attribute_table): Add register attribute. * d-codegen.cc (d_mark_addressable): Error if taken address of register variable. (build_frame_type): Error if register variable has non-local references. * d-tree.h (d_mark_addressable): Add complain parameter. * decl.cc (get_symbol_decl): Mark register varibles DECL_REGISTER. Error when register variable declared thread-local or extern. * expr.cc (ExprVisitor::visit (IndexExp *)): Don't complain about marking register vectors as addressable in an ARRAY_REF. libphobos/ChangeLog: * libdruntime/gcc/attributes.d (register): Define. gcc/testsuite/ChangeLog: * gdc.dg/attr_register1.d: New test. * gdc.dg/attr_register2.d: New test. * gdc.dg/attr_register3.d: New test.
