[gcc r15-8580] gccrs: lang-item: Add Sync trait

[Arthur Cohen]

https://gcc.gnu.org/g:ed75c2b000afe0a3c82c696554122bbcdad2b727

commit r15-8580-ged75c2b000afe0a3c82c696554122bbcdad2b727
Author: Arthur Cohen <arthur.cohen@embecosm.com>
Date:   Wed Dec 25 11:08:25 2024 +0000

    gccrs: lang-item: Add Sync trait
    
    gcc/rust/ChangeLog:
    
            * util/rust-lang-item.h: Add Sync marker trait.
            * util/rust-lang-item.cc: Likewise.

Diff:
---
 gcc/rust/util/rust-lang-item.cc | 1 +
 gcc/rust/util/rust-lang-item.h  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/gcc/rust/util/rust-lang-item.cc b/gcc/rust/util/rust-lang-item.cc
index 5ddffaa59d4b..216202af9266 100644
--- a/gcc/rust/util/rust-lang-item.cc
+++ b/gcc/rust/util/rust-lang-item.cc
@@ -62,6 +62,7 @@ const BiMap<std::string, LangItem::Kind> Rust::LangItem::lang_items = {{
   {"copy", Kind::COPY},
   {"clone", Kind::CLONE},
   {"sized", Kind::SIZED},
+  {"sync", Kind::SYNC},
   {"slice_alloc", Kind::SLICE_ALLOC},
   {"slice_u8_alloc", Kind::SLICE_U8_ALLOC},
   {"str_alloc", Kind::STR_ALLOC},
diff --git a/gcc/rust/util/rust-lang-item.h b/gcc/rust/util/rust-lang-item.h
index 92c70bbddf44..66d26d03907c 100644
--- a/gcc/rust/util/rust-lang-item.h
+++ b/gcc/rust/util/rust-lang-item.h
@@ -82,6 +82,7 @@ public:
     COPY,
     CLONE,
     SIZED,
+    SYNC,
 
     // https://github.com/Rust-GCC/gccrs/issues/1896
     // https://github.com/rust-lang/rust/commit/afbecc0f68c4dcfc4878ba5bcb1ac942544a1bdc