gccrs: Fix visitor-related warnings

gcc/rust/ChangeLog:

	* ast/rust-ast-collector.cc (TokenCollector::visit):
	Fix visitor-related warnings
	* ast/rust-ast-collector.h: Likewise.
	* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit): Likewise.
	* ast/rust-ast-visitor.h: Likewise.
	* checks/errors/borrowck/rust-bir-builder-struct.h: Likewise.
	* checks/errors/borrowck/rust-function-collector.h: Likewise.
	* checks/errors/rust-const-checker.cc (ConstChecker::visit): Likewise.
	* checks/errors/rust-const-checker.h: Likewise.
	* expand/rust-derive.h: Likewise.
	* expand/rust-macro-builtins-asm.cc (parse_reg_operand): Likewise.
	* hir/rust-hir-dump.cc (Dump::visit): Likewise.
	* hir/rust-hir-dump.h: Likewise.
	* hir/tree/rust-hir-visitor.h: Likewise.
	* resolve/rust-ast-resolve-base.cc (ResolverBase::visit): Likewise.
	* resolve/rust-ast-resolve-base.h: Likewise.

15 files changed, 54 insertions, 6 deletions

diff --git a/gcc/rust/ast/rust-ast-collector.cc b/gcc/rust/ast/rust-ast-collector.cc
index bc8bc9c..f1d5c8c 100644
--- a/gcc/rust/ast/rust-ast-collector.cc
+++ b/gcc/rust/ast/rust-ast-collector.cc
@@ -18,6 +18,7 @@
 #include "rust-ast-collector.h"
 #include "rust-ast.h"
 #include "rust-diagnostics.h"
+#include "rust-expr.h"
 #include "rust-item.h"
 #include "rust-keyword-values.h"
 #include "rust-token.h"
@@ -1511,6 +1512,10 @@ TokenCollector::visit (AsyncBlockExpr &expr)
   visit (expr.get_block_expr ());
 }
 
+void
+TokenCollector::visit (InlineAsm &expr)
+{}
+
 // rust-item.h
 
 void
diff --git a/gcc/rust/ast/rust-ast-collector.h b/gcc/rust/ast/rust-ast-collector.h
index 7b418bb..b2dc41b 100644
--- a/gcc/rust/ast/rust-ast-collector.h
+++ b/gcc/rust/ast/rust-ast-collector.h
@@ -303,7 +303,7 @@ public:
   void visit (MatchExpr &expr);
   void visit (AwaitExpr &expr);
   void visit (AsyncBlockExpr &expr);
-
+  void visit (InlineAsm &expr);
   // rust-item.h
   void visit (TypeParam &param);
   void visit (LifetimeWhereClauseItem &item);
diff --git a/gcc/rust/ast/rust-ast-visitor.cc b/gcc/rust/ast/rust-ast-visitor.cc
index 2c1674e..c4abf2e 100644
--- a/gcc/rust/ast/rust-ast-visitor.cc
+++ b/gcc/rust/ast/rust-ast-visitor.cc
@@ -663,6 +663,12 @@ DefaultASTVisitor::visit (AST::AsyncBlockExpr &expr)
 }
 
 void
+DefaultASTVisitor::visit (AST::InlineAsm &expr)
+{
+  rust_unreachable ();
+}
+
+void
 DefaultASTVisitor::visit (AST::TypeParam &param)
 {
   visit_outer_attrs (param);
diff --git a/gcc/rust/ast/rust-ast-visitor.h b/gcc/rust/ast/rust-ast-visitor.h
index d91ef3d..2f56d89 100644
--- a/gcc/rust/ast/rust-ast-visitor.h
+++ b/gcc/rust/ast/rust-ast-visitor.h
@@ -23,7 +23,6 @@
 // full include not required - only forward decls
 #include "rust-ast-full-decls.h"
 #include "rust-ast.h"
-#include "rust-expr.h"
 #include "rust-item.h"
 #include "rust-system.h"
 
@@ -129,7 +128,7 @@ public:
   virtual void visit (MatchExpr &expr) = 0;
   virtual void visit (AwaitExpr &expr) = 0;
   virtual void visit (AsyncBlockExpr &expr) = 0;
-  virtual void visit (InlineAsm &expr) { rust_unreachable (); }
+  virtual void visit (InlineAsm &expr) = 0;
 
   // rust-item.h
   virtual void visit (TypeParam &param) = 0;
@@ -313,6 +312,8 @@ protected:
   virtual void visit (AST::MatchExpr &expr) override;
   virtual void visit (AST::AwaitExpr &expr) override;
   virtual void visit (AST::AsyncBlockExpr &expr) override;
+  virtual void visit (InlineAsm &expr) override;
+
   virtual void visit (AST::TypeParam &param) override;
   virtual void visit (AST::LifetimeWhereClauseItem &item) override;
   virtual void visit (AST::TypeBoundWhereClauseItem &item) override;
diff --git a/gcc/rust/checks/errors/borrowck/rust-bir-builder-struct.h b/gcc/rust/checks/errors/borrowck/rust-bir-builder-struct.h
index 17331dd..53346bf 100644
--- a/gcc/rust/checks/errors/borrowck/rust-bir-builder-struct.h
+++ b/gcc/rust/checks/errors/borrowck/rust-bir-builder-struct.h
@@ -154,6 +154,7 @@ protected:
   void visit (HIR::MatchExpr &expr) override { rust_unreachable (); }
   void visit (HIR::AwaitExpr &expr) override { rust_unreachable (); }
   void visit (HIR::AsyncBlockExpr &expr) override { rust_unreachable (); }
+  void visit (HIR::InlineAsm &expr) override { rust_unreachable (); }
   void visit (HIR::TypeParam &param) override { rust_unreachable (); }
   void visit (HIR::ConstGenericParam &param) override { rust_unreachable (); }
   void visit (HIR::LifetimeWhereClauseItem &item) override
diff --git a/gcc/rust/checks/errors/borrowck/rust-function-collector.h b/gcc/rust/checks/errors/borrowck/rust-function-collector.h
index 990534f..51109d7 100644
--- a/gcc/rust/checks/errors/borrowck/rust-function-collector.h
+++ b/gcc/rust/checks/errors/borrowck/rust-function-collector.h
@@ -124,6 +124,7 @@ public:
   void visit (HIR::MatchExpr &expr) override {}
   void visit (HIR::AwaitExpr &expr) override {}
   void visit (HIR::AsyncBlockExpr &expr) override {}
+  void visit (HIR::InlineAsm &expr) override {}
   void visit (HIR::TypeParam &param) override {}
   void visit (HIR::ConstGenericParam &param) override {}
   void visit (HIR::LifetimeWhereClauseItem &item) override {}
diff --git a/gcc/rust/checks/errors/rust-const-checker.cc b/gcc/rust/checks/errors/rust-const-checker.cc
index 8c12012..2beee21 100644
--- a/gcc/rust/checks/errors/rust-const-checker.cc
+++ b/gcc/rust/checks/errors/rust-const-checker.cc
@@ -535,6 +535,10 @@ ConstChecker::visit (AsyncBlockExpr &)
 }
 
 void
+ConstChecker::visit (InlineAsm &)
+{}
+
+void
 ConstChecker::visit (TypeParam &)
 {}
 
diff --git a/gcc/rust/checks/errors/rust-const-checker.h b/gcc/rust/checks/errors/rust-const-checker.h
index 8b9df0e..8890761 100644
--- a/gcc/rust/checks/errors/rust-const-checker.h
+++ b/gcc/rust/checks/errors/rust-const-checker.h
@@ -133,6 +133,8 @@ private:
   virtual void visit (MatchExpr &expr) override;
   virtual void visit (AwaitExpr &expr) override;
   virtual void visit (AsyncBlockExpr &expr) override;
+  virtual void visit (InlineAsm &expr) override;
+
   virtual void visit (TypeParam &param) override;
   virtual void visit (ConstGenericParam &param) override;
   virtual void visit (LifetimeWhereClauseItem &item) override;
diff --git a/gcc/rust/expand/rust-derive.h b/gcc/rust/expand/rust-derive.h
index c92f9c0..1924432 100644
--- a/gcc/rust/expand/rust-derive.h
+++ b/gcc/rust/expand/rust-derive.h
@@ -143,6 +143,7 @@ private:
   virtual void visit (MatchExpr &expr) override final{};
   virtual void visit (AwaitExpr &expr) override final{};
   virtual void visit (AsyncBlockExpr &expr) override final{};
+  virtual void visit (InlineAsm &expr) override final{};
   virtual void visit (TypeParam &param) override final{};
   virtual void visit (LifetimeWhereClauseItem &item) override final{};
   virtual void visit (TypeBoundWhereClauseItem &item) override final{};
diff --git a/gcc/rust/expand/rust-macro-builtins-asm.cc b/gcc/rust/expand/rust-macro-builtins-asm.cc
index 55ba95a..b666fad 100644
--- a/gcc/rust/expand/rust-macro-builtins-asm.cc
+++ b/gcc/rust/expand/rust-macro-builtins-asm.cc
@@ -263,8 +263,23 @@ parse_reg_operand (Parser<MacroInvocLexer> &parser, TokenId last_token_id,
     }
   else if (!is_global_asm && check_identifier (parser, "out"))
     {
-      rust_unreachable ();
-      return tl::nullopt;
+      rust_debug ("Enter parse_reg_operand out");
+
+      auto reg = parse_reg (parser, last_token_id, inline_asm_ctx);
+
+      auto expr = parse_format_string (parser, last_token_id, inline_asm_ctx);
+      reg_operand.register_type = AST::InlineAsmOperand::RegisterType::Out;
+
+      // Since reg is of type optional<T>, we need to check if it is not
+      // optional first.
+      // TODO: We don't throw any errors since we should have throw any
+      // encountered parsing error in parse_reg
+      if (reg)
+	{
+	  reg_operand.in.reg = reg.value ();
+	}
+
+      return reg_operand;
     }
   else if (!is_global_asm && check_identifier (parser, "lateout"))
     {
diff --git a/gcc/rust/hir/rust-hir-dump.cc b/gcc/rust/hir/rust-hir-dump.cc
index 567c4f3..f0fd914 100644
--- a/gcc/rust/hir/rust-hir-dump.cc
+++ b/gcc/rust/hir/rust-hir-dump.cc
@@ -24,6 +24,7 @@
 #include "rust-hir.h"
 #include <string>
 #include "rust-attribute-values.h"
+#include "tree/rust-hir-expr.h"
 
 namespace Rust {
 namespace HIR {
@@ -1471,6 +1472,10 @@ Dump::visit (AsyncBlockExpr &e)
 }
 
 void
+Dump::visit (InlineAsm &e)
+{}
+
+void
 Dump::visit (TypeParam &e)
 {
   begin ("TypeParam");
diff --git a/gcc/rust/hir/rust-hir-dump.h b/gcc/rust/hir/rust-hir-dump.h
index 51273c1..bb5c360 100644
--- a/gcc/rust/hir/rust-hir-dump.h
+++ b/gcc/rust/hir/rust-hir-dump.h
@@ -166,6 +166,7 @@ private:
   virtual void visit (MatchExpr &) override;
   virtual void visit (AwaitExpr &) override;
   virtual void visit (AsyncBlockExpr &) override;
+  virtual void visit (InlineAsm &) override;
 
   virtual void visit (TypeParam &) override;
   virtual void visit (ConstGenericParam &) override;
diff --git a/gcc/rust/hir/tree/rust-hir-visitor.h b/gcc/rust/hir/tree/rust-hir-visitor.h
index be14149..72609f4 100644
--- a/gcc/rust/hir/tree/rust-hir-visitor.h
+++ b/gcc/rust/hir/tree/rust-hir-visitor.h
@@ -86,7 +86,7 @@ public:
   virtual void visit (MatchExpr &expr) = 0;
   virtual void visit (AwaitExpr &expr) = 0;
   virtual void visit (AsyncBlockExpr &expr) = 0;
-  virtual void visit (InlineAsm &expr) {}
+  virtual void visit (InlineAsm &expr) = 0;
   virtual void visit (TypeParam &param) = 0;
   virtual void visit (ConstGenericParam &param) = 0;
   virtual void visit (LifetimeWhereClauseItem &item) = 0;
@@ -225,6 +225,7 @@ public:
   virtual void visit (MatchExpr &) override {}
   virtual void visit (AwaitExpr &) override {}
   virtual void visit (AsyncBlockExpr &) override {}
+  virtual void visit (InlineAsm &) override {}
 
   virtual void visit (TypeParam &) override {}
   virtual void visit (ConstGenericParam &) override {}
diff --git a/gcc/rust/resolve/rust-ast-resolve-base.cc b/gcc/rust/resolve/rust-ast-resolve-base.cc
index 66ce5bf..69f146c 100644
--- a/gcc/rust/resolve/rust-ast-resolve-base.cc
+++ b/gcc/rust/resolve/rust-ast-resolve-base.cc
@@ -323,6 +323,10 @@ ResolverBase::visit (AST::AsyncBlockExpr &)
 {}
 
 void
+ResolverBase::visit (AST::InlineAsm &)
+{}
+
+void
 ResolverBase::visit (AST::TypeParam &)
 {}
 
diff --git a/gcc/rust/resolve/rust-ast-resolve-base.h b/gcc/rust/resolve/rust-ast-resolve-base.h
index 46bcac6..0d497f8 100644
--- a/gcc/rust/resolve/rust-ast-resolve-base.h
+++ b/gcc/rust/resolve/rust-ast-resolve-base.h
@@ -104,6 +104,7 @@ public:
   void visit (AST::MatchExpr &);
   void visit (AST::AwaitExpr &);
   void visit (AST::AsyncBlockExpr &);
+  void visit (AST::InlineAsm &);
 
   void visit (AST::TypeParam &);