[gcc r14-8109] gccrs: HIR: remove obsole double borrow member

[Arthur Cohen]

https://gcc.gnu.org/g:80bdb1a85ac6275eb7cdb963b257ba65168c8eb9

commit r14-8109-g80bdb1a85ac6275eb7cdb963b257ba65168c8eb9
Author: Jakub Dupak <dev@jakubdupak.com>
Date:   Thu Nov 2 13:42:48 2023 +0100

    gccrs: HIR: remove obsole double borrow member
    
    gcc/rust/ChangeLog:
    
            * hir/rust-hir-dump.cc (Dump::visit): Remove obsolete member.
            * hir/tree/rust-hir-expr.h (class BorrowExpr): Remove obsolete member.
            * hir/tree/rust-hir.cc (BorrowExpr::as_string): Remove obsolete member.
    
    Signed-off-by: Jakub Dupak <dev@jakubdupak.com>

Diff:
---
 gcc/rust/hir/rust-hir-dump.cc     | 1 -
 gcc/rust/hir/tree/rust-hir-expr.h | 3 ---
 gcc/rust/hir/tree/rust-hir.cc     | 5 -----
 3 files changed, 9 deletions(-)

diff --git a/gcc/rust/hir/rust-hir-dump.cc b/gcc/rust/hir/rust-hir-dump.cc
index 4ce8f334b09..2fdf769c0de 100644
--- a/gcc/rust/hir/rust-hir-dump.cc
+++ b/gcc/rust/hir/rust-hir-dump.cc
@@ -808,7 +808,6 @@ Dump::visit (BorrowExpr &e)
   begin ("BorrowExpr");
   do_operatorexpr (e);
 
-  put_field ("double_borrow", std::to_string (e.is_double_borrow ()));
   put_field ("mut", enum_to_str (e.get_mut ()));
 
   end ("BorrowExpr");
diff --git a/gcc/rust/hir/tree/rust-hir-expr.h b/gcc/rust/hir/tree/rust-hir-expr.h
index 4c49d943317..0e3e909e15c 100644
--- a/gcc/rust/hir/tree/rust-hir-expr.h
+++ b/gcc/rust/hir/tree/rust-hir-expr.h
@@ -213,7 +213,6 @@ public:
 class BorrowExpr : public OperatorExpr
 {
   Mutability mut;
-  bool double_borrow;
 
 public:
   std::string as_string () const override;
@@ -232,8 +231,6 @@ public:
   Mutability get_mut () const { return mut; }
   bool is_mut () const { return mut == Mutability::Mut; }
 
-  bool is_double_borrow () const { return double_borrow; }
-
 protected:
   /* Use covariance to implement clone function as returning this object rather
    * than base */
diff --git a/gcc/rust/hir/tree/rust-hir.cc b/gcc/rust/hir/tree/rust-hir.cc
index a3d6e1ee276..66f626ba845 100644
--- a/gcc/rust/hir/tree/rust-hir.cc
+++ b/gcc/rust/hir/tree/rust-hir.cc
@@ -1182,11 +1182,6 @@ BorrowExpr::as_string () const
 {
   std::string str ("&");
 
-  if (double_borrow)
-    {
-      str += "&";
-    }
-
   if (is_mut ())
     {
       str += "mut ";