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Subject: [Bug d/105413] gdc extended assembler cannot constraints r8 - r15
Date: Fri, 24 Jun 2022 18:55:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105413

--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Iain Buclaw <ibuclaw@gcc.gnu.org>:

https://gcc.gnu.org/g:91418c42089cd1cbe71edcd6b2f5b26559819372

commit r13-1255-g91418c42089cd1cbe71edcd6b2f5b26559819372
Author: Iain Buclaw <ibuclaw@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_REGIST=
ER.
            Error when register variable declared thread-local or extern.
            * expr.cc (ExprVisitor::visit (IndexExp *)): Don't complain abo=
ut
            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.=