From d1e920221043f03a2d6e84def6c380ee03ac79ec Mon Sep 17 00:00:00 2001
From: Arthur Cohen <arthur.cohen@embecosm.com>
Date: Thu, 23 Jan 2025 11:46:48 +0000
Subject: [PATCH] gccrs: lang-items: Add From::from

gcc/rust/ChangeLog:

	* util/rust-lang-item.h: Declare it.
	* util/rust-lang-item.cc: Use it.
---
 gcc/rust/util/rust-lang-item.cc | 2 ++
 gcc/rust/util/rust-lang-item.h  | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/gcc/rust/util/rust-lang-item.cc b/gcc/rust/util/rust-lang-item.cc
index b37a237c24e..145054ff9d7 100644
--- a/gcc/rust/util/rust-lang-item.cc
+++ b/gcc/rust/util/rust-lang-item.cc
@@ -110,6 +110,8 @@ const BiMap<std::string, LangItem::Kind> Rust::LangItem::lang_items = {{
   {"into_result", Kind::TRY_INTO_RESULT},
   {"from_error", Kind::TRY_FROM_ERROR},
   {"from_ok", Kind::TRY_FROM_OK},
+
+  {"from", Kind::FROM_FROM},
 }};
 
 tl::optional<LangItem::Kind>
diff --git a/gcc/rust/util/rust-lang-item.h b/gcc/rust/util/rust-lang-item.h
index 851909d409c..f30b93609b5 100644
--- a/gcc/rust/util/rust-lang-item.h
+++ b/gcc/rust/util/rust-lang-item.h
@@ -141,6 +141,9 @@ public:
     TRY_INTO_RESULT,
     TRY_FROM_ERROR,
     TRY_FROM_OK,
+
+    // NOTE: This is not a lang item in later versions of Rust
+    FROM_FROM,
   };
 
   static const BiMap<std::string, Kind> lang_items;
-- 
2.47.2