Auto merge of #46811 - michaelwoerister:depkind-is-input, r=nikomatsakis

incr.comp.: Mark DepKind node as input.

Fixes `euclid` on https://travis-ci.org/rust-icci.

r? @nikomatsakis

src/librustc/dep_graph/dep_node.rs

@@ -594,7 +594,7 @@ define_dep_nodes!( <'tcx>
     [] ObjectLifetimeDefaults(DefIndex),
 
     [] Visibility(DefId),
-    [] DepKind(CrateNum),
+    [input] DepKind(CrateNum),
     [input] CrateName(CrateNum),
     [] ItemChildren(DefId),
     [] ExternModStmtCnum(DefId),

src/test/incremental/change_crate_dep_kind.rs

@@ -0,0 +1,24 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test that we detect changes to the `dep_kind` query. If the change is not
+// detected then -Zincremental-verify-ich will trigger an assertion.
+
+// revisions:cfail1 cfail2
+// compile-flags: -Z query-dep-graph -Cpanic=unwind
+// must-compile-successfully
+
+#![feature(panic_unwind)]
+
+// Turn the panic_unwind crate from an explicit into an implicit query:
+#[cfg(cfail1)]
+extern crate panic_unwind;
+
+fn main() {}