[gcc/devel/rust/master] Merge #916

[Thomas Schwinge <tschwinge@gcc.gnu.org>]

https://gcc.gnu.org/g:f6ba472caf42db1f5f2f98b73afccf448b36c322

commit f6ba472caf42db1f5f2f98b73afccf448b36c322
Merge: 6d1ff568084 c598bbbcc1e
Author: bors[bot] <26634292+bors[bot]@users.noreply.github.com>
Date:   Thu Feb 10 12:50:30 2022 +0000

    Merge #916
    
    916: Support inline attribute by marking as DECL_DECLARED_INLINE_P r=philberty a=philberty
    
    This does a refactor by removing more flags for the fndecl construction
    from the rust-gcc wrapper code in favour of using the tree api directly.
    The ABI option attributes have also been refactored from the backend
    interface in favour of their own package.
    
    The gccgo wrapper tried to mark inline fns as extern inline but this
    refactor allows us to control the inline options specificly for the
    rust semantics.
    
    Fixes #857
    
    
    Co-authored-by: Philip Herron <philip.herron@embecosm.com>

Diff:

 gcc/rust/Make-lang.in                             |  2 +
 gcc/rust/backend/rust-compile-base.cc             | 92 +++++++++++++++++++++++
 gcc/rust/backend/rust-compile-base.h              |  6 ++
 gcc/rust/backend/rust-compile-extern.h            | 11 +--
 gcc/rust/backend/rust-compile-implitem.h          | 17 ++---
 gcc/rust/backend/rust-compile-item.h              | 24 +++---
 gcc/rust/hir/tree/rust-hir-item.h                 |  4 +
 gcc/rust/rust-backend.h                           | 69 +----------------
 gcc/rust/rust-gcc.cc                              | 61 +--------------
 gcc/rust/typecheck/rust-hir-type-check-implitem.h | 20 +++--
 gcc/rust/util/rust-abi.cc                         | 64 ++++++++++++++++
 gcc/rust/{ => util}/rust-abi.h                    |  8 ++
 12 files changed, 214 insertions(+), 164 deletions(-)