compiler: if hidden function referenced by inline, don't hide descriptor

    
    Fixes golang/go#33739
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/191037

From-SVN: r274800

gcc/go/gofrontend/MERGE

-1846b07fec2b91facc02ea269f7ab250b30f90b4
+7da359f4659fffff051c05ff442037cfa61febd5
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

gcc/go/gofrontend/expressions.cc

@@ -1560,10 +1560,14 @@ Func_descriptor_expression::do_get_backend(Translate_context* context)
 	      || no->name().find("equal") != std::string::npos))
 	is_exported_runtime = true;
 
+      bool is_referenced_by_inline =
+	no->is_function() && no->func_value()->is_referenced_by_inline();
+
       bool is_hidden = ((no->is_function()
 			 && no->func_value()->enclosing() != NULL)
 			|| (Gogo::is_hidden_name(no->name())
-			    && !is_exported_runtime)
+			    && !is_exported_runtime
+			    && !is_referenced_by_inline)
 			|| Gogo::is_thunk(no));
 
       bvar = context->backend()->immutable_struct(var_name, asm_name,

gcc/go/gofrontend/gogo.h

@@ -1543,6 +1543,11 @@ class Function
   set_is_inline_only()
   { this->is_inline_only_ = true; }
 
+  // Report whether the function is referenced by an inline body.
+  bool
+  is_referenced_by_inline() const
+  { return this->is_referenced_by_inline_; }
+
   // Mark the function as referenced by an inline body.
   void
   set_is_referenced_by_inline()