Add asm label support to AST and HIR

Author: nbdd0121

clippy_lints/src/loops/never_loop.rs

@@ -255,6 +255,9 @@ fn never_loop_expr<'tcx>(
             InlineAsmOperand::Const { .. } | InlineAsmOperand::SymFn { .. } | InlineAsmOperand::SymStatic { .. } => {
                 NeverLoopResult::Normal
             },
+            InlineAsmOperand::Label { block } => {
+                never_loop_block(cx, block, local_labels, main_loop_id)
+            }
         })),
         ExprKind::OffsetOf(_, _)
         | ExprKind::Yield(_, _)

clippy_utils/src/hir_utils.rs

@@ -835,6 +835,7 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                             self.hash_body(anon_const.body);
                         },
                         InlineAsmOperand::SymStatic { path, def_id: _ } => self.hash_qpath(path),
+                        InlineAsmOperand::Label { block } => self.hash_block(block),
                     }
                 }
             },