[gcc r14-7622] gccrs: remove useless lookup to NodeId

[Arthur Cohen]

https://gcc.gnu.org/g:e07cb0b07d50ffa6b8533c4e0f65b6a4829d2823

commit r14-7622-ge07cb0b07d50ffa6b8533c4e0f65b6a4829d2823
Author: Philip Herron <herron.philip@googlemail.com>
Date:   Tue May 30 12:10:40 2023 +0100

    gccrs: remove useless lookup to NodeId
    
    gcc/rust/ChangeLog:
    
            * backend/rust-compile-expr.cc (CompileExpr::visit): remove unused
    
    Signed-off-by: Philip Herron <herron.philip@googlemail.com>

Diff:
---
 gcc/rust/backend/rust-compile-expr.cc | 33 +++------------------------------
 1 file changed, 3 insertions(+), 30 deletions(-)

diff --git a/gcc/rust/backend/rust-compile-expr.cc b/gcc/rust/backend/rust-compile-expr.cc
index 93dd937da6f..5152c99362f 100644
--- a/gcc/rust/backend/rust-compile-expr.cc
+++ b/gcc/rust/backend/rust-compile-expr.cc
@@ -1698,23 +1698,6 @@ CompileExpr::visit (HIR::MethodCallExpr &expr)
   // method receiver
   tree self = CompileExpr::Compile (expr.get_receiver ().get (), ctx);
 
-  // lookup the resolved name
-  NodeId resolved_node_id = UNKNOWN_NODEID;
-  if (!ctx->get_resolver ()->lookup_resolved_name (
-	expr.get_mappings ().get_nodeid (), &resolved_node_id))
-    {
-      rust_error_at (expr.get_locus (), "failed to lookup resolved MethodCall");
-      return;
-    }
-
-  // reverse lookup
-  HirId ref;
-  if (!ctx->get_mappings ()->lookup_node_to_hir (resolved_node_id, &ref))
-    {
-      rust_fatal_error (expr.get_locus (), "reverse lookup failure");
-      return;
-    }
-
   // lookup the expected function type
   TyTy::BaseType *lookup_fntype = nullptr;
   bool ok = ctx->get_tyctx ()->lookup_type (
@@ -1871,20 +1854,10 @@ CompileExpr::resolve_operator_overload (
     expr.get_mappings ().get_hirid (), &fntype);
   rust_assert (is_op_overload);
 
-  // lookup the resolved name
-  NodeId resolved_node_id = UNKNOWN_NODEID;
-  bool ok = ctx->get_resolver ()->lookup_resolved_name (
-    expr.get_mappings ().get_nodeid (), &resolved_node_id);
-  rust_assert (ok);
-
-  // reverse lookup
-  HirId ref;
-  ok = ctx->get_mappings ()->lookup_node_to_hir (resolved_node_id, &ref);
-  rust_assert (ok);
-
   TyTy::BaseType *receiver = nullptr;
-  ok = ctx->get_tyctx ()->lookup_receiver (expr.get_mappings ().get_hirid (),
-					   &receiver);
+  bool ok
+    = ctx->get_tyctx ()->lookup_receiver (expr.get_mappings ().get_hirid (),
+					  &receiver);
   rust_assert (ok);
 
   bool is_generic_receiver = receiver->get_kind () == TyTy::TypeKind::PARAM;