Rollup merge of rust-lang#37693 - michaelwoerister:ich-tests, r=brson

ICH: Add test case for call expressions.

r? @nikomatsakis

src/test/incremental/hashes/call_expressions.rs

@@ -0,0 +1,203 @@
+// Copyright 2016 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.
+
+
+// This test case tests the incremental compilation hash (ICH) implementation
+// for function and method call expressions.
+
+// The general pattern followed here is: Change one thing between rev1 and rev2
+// and make sure that the hash has changed, then change nothing between rev2 and
+// rev3 and make sure that the hash has not changed.
+
+// must-compile-successfully
+// revisions: cfail1 cfail2 cfail3
+// compile-flags: -Z query-dep-graph
+
+
+#![allow(warnings)]
+#![feature(rustc_attrs)]
+#![crate_type="rlib"]
+
+fn callee1(_x: u32, _y: i64) {}
+fn callee2(_x: u32, _y: i64) {}
+
+
+// Change Callee (Function) ----------------------------------------------------
+#[cfg(cfail1)]
+pub fn change_callee_function() {
+    callee1(1, 2)
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_callee_function() {
+    callee2(1, 2)
+}
+
+
+
+// Change Argument (Function) --------------------------------------------------
+#[cfg(cfail1)]
+pub fn change_argument_function() {
+    callee1(1, 2)
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_argument_function() {
+    callee1(1, 3)
+}
+
+
+
+// Change Callee Indirectly (Function) -----------------------------------------
+mod change_callee_indirectly_function {
+    #[cfg(cfail1)]
+    use super::callee1 as callee;
+    #[cfg(not(cfail1))]
+    use super::callee2 as callee;
+
+    #[rustc_dirty(label="Hir", cfg="cfail2")]
+    #[rustc_clean(label="Hir", cfg="cfail3")]
+    #[rustc_metadata_dirty(cfg="cfail2")]
+    #[rustc_metadata_clean(cfg="cfail3")]
+    pub fn change_callee_indirectly_function() {
+        callee(1, 2)
+    }
+}
+
+
+struct Struct;
+impl Struct {
+    fn method1(&self, _x: char, _y: bool) {}
+    fn method2(&self, _x: char, _y: bool) {}
+}
+
+// Change Callee (Method) ------------------------------------------------------
+#[cfg(cfail1)]
+pub fn change_callee_method() {
+    let s = Struct;
+    s.method1('x', true);
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_callee_method() {
+    let s = Struct;
+    s.method2('x', true);
+}
+
+
+
+// Change Argument (Method) ----------------------------------------------------
+#[cfg(cfail1)]
+pub fn change_argument_method() {
+    let s = Struct;
+    s.method1('x', true);
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_argument_method() {
+    let s = Struct;
+    s.method1('y', true);
+}
+
+
+
+// Change Callee (Method, UFCS) ------------------------------------------------
+#[cfg(cfail1)]
+pub fn change_ufcs_callee_method() {
+    let s = Struct;
+    Struct::method1(&s, 'x', true);
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_ufcs_callee_method() {
+    let s = Struct;
+    Struct::method2(&s, 'x', true);
+}
+
+
+
+// Change Argument (Method, UFCS) ----------------------------------------------
+#[cfg(cfail1)]
+pub fn change_argument_method_ufcs() {
+    let s = Struct;
+    Struct::method1(&s, 'x', true);
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_argument_method_ufcs() {
+    let s = Struct;
+    Struct::method1(&s, 'x', false);
+}
+
+
+
+// Change To UFCS --------------------------------------------------------------
+#[cfg(cfail1)]
+pub fn change_to_ufcs() {
+    let s = Struct;
+    s.method1('x', true);
+}
+
+#[cfg(not(cfail1))]
+#[rustc_dirty(label="Hir", cfg="cfail2")]
+#[rustc_clean(label="Hir", cfg="cfail3")]
+#[rustc_metadata_dirty(cfg="cfail2")]
+#[rustc_metadata_clean(cfg="cfail3")]
+pub fn change_to_ufcs() {
+    let s = Struct;
+    Struct::method1(&s, 'x', true);
+}
+
+
+struct Struct2;
+impl Struct2 {
+    fn method1(&self, _x: char, _y: bool) {}
+}
+
+// Change UFCS Callee Indirectly -----------------------------------------------
+mod change_ufcs_callee_indirectly {
+    #[cfg(cfail1)]
+    use super::Struct as Struct;
+    #[cfg(not(cfail1))]
+    use super::Struct2 as Struct;
+
+    #[rustc_dirty(label="Hir", cfg="cfail2")]
+    #[rustc_clean(label="Hir", cfg="cfail3")]
+    #[rustc_metadata_dirty(cfg="cfail2")]
+    #[rustc_metadata_clean(cfg="cfail3")]
+    pub fn change_ufcs_callee_indirectly() {
+        let s = Struct;
+        Struct::method1(&s, 'q', false)
+    }
+}