Auto merge of #49460 - kennytm:rollup, r=kennytm

Rollup of 12 pull requests

- Successful merges: #49243, #49329, #49364, #49400, #49405, #49427, #49428, #49429, #49439, #49442, #49444, #49452
- Failed merges:

src/test/run-pass/sse2.rs

@@ -8,7 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// no-system-llvm -- needs MCSubtargetInfo::getFeatureTable()
+// min-llvm-version 6.0
+// ^ needs MCSubtargetInfo::checkFeatures()
 // ignore-cloudabi no std::env
 
 #![feature(cfg_target_feature)]
@@ -29,4 +30,7 @@ fn main() {
         assert!(cfg!(target_feature = "sse2"),
                 "SSE2 was not detected as available on an x86 platform");
     }
+    // check a negative case too -- whitelisted on x86, but not enabled by default
+    assert!(cfg!(not(target_feature = "avx2")),
+            "AVX2 shouldn't be detected as available by default on any platform");
 }

src/test/rustdoc/auxiliary/extern-impl-trait.rs

@@ -0,0 +1,37 @@
+// Copyright 2018 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.
+
+pub trait Foo {
+    type Associated;
+}
+
+pub struct X;
+pub struct Y;
+
+
+impl Foo for X {
+    type Associated = ();
+}
+
+impl Foo for Y {
+    type Associated = ();
+}
+
+impl X {
+    pub fn returns_sized<'a>(&'a self) -> impl Foo<Associated=()> + 'a {
+        X
+    }
+}
+
+impl Y {
+    pub fn returns_unsized<'a>(&'a self) -> Box<impl ?Sized + Foo<Associated=()> + 'a> {
+        Box::new(X)
+    }
+}

src/test/rustdoc/extern-impl-trait.rs

@@ -0,0 +1,21 @@
+// Copyright 2018 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.
+
+// aux-build:extern-impl-trait.rs
+
+#![crate_name = "foo"]
+
+extern crate extern_impl_trait;
+
+// @has 'foo/struct.X.html' '//code' "impl Foo<Associated = ()> + 'a"
+pub use extern_impl_trait::X;
+
+// @has 'foo/struct.Y.html' '//code' "impl ?Sized + Foo<Associated = ()> + 'a"
+pub use extern_impl_trait::Y;

src/test/rustdoc/synthetic_auto/complex.rs

@@ -30,7 +30,7 @@ mod foo {
 }
 
 // @has complex/struct.NotOuter.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<'a, T, K: \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<'a, T, K: \
 // ?Sized> Send for NotOuter<'a, T, K> where K: for<'b> Fn((&'b bool, &'a u8)) \
 // -> &'b i8, T: MyTrait<'a>, <T as MyTrait<'a>>::MyItem: Copy, 'a: 'static"
 

src/test/rustdoc/synthetic_auto/lifetimes.rs

@@ -18,10 +18,10 @@ where
 {}
 
 // @has lifetimes/struct.Foo.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<'c, K> Send \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<'c, K> Send \
 // for Foo<'c, K> where K: for<'b> Fn(&'b bool) -> &'c u8, 'c: 'static"
 //
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<'c, K> Sync \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<'c, K> Sync \
 // for Foo<'c, K> where K: Sync"
 pub struct Foo<'c, K: 'c> {
     inner_field: Inner<'c, K>,

src/test/rustdoc/synthetic_auto/manual.rs

@@ -9,10 +9,10 @@
 // except according to those terms.
 
 // @has manual/struct.Foo.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' 'impl<T> Sync for \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' 'impl<T> Sync for \
 // Foo<T> where T: Sync'
 //
-// @has - '//*[@id="implementations-list"]/*[@class="impl"]/*/code' \
+// @has - '//*[@id="implementations-list"]/*[@class="impl"]//*/code' \
 // 'impl<T> Send for Foo<T>'
 //
 // @count - '//*[@id="implementations-list"]/*[@class="impl"]' 1

src/test/rustdoc/synthetic_auto/negative.rs

@@ -13,10 +13,10 @@ pub struct Inner<T: Copy> {
 }
 
 // @has negative/struct.Outer.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<T> !Send for \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<T> !Send for \
 // Outer<T>"
 //
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<T> \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<T> \
 // !Sync for Outer<T>"
 pub struct Outer<T: Copy> {
     inner_field: Inner<T>,

src/test/rustdoc/synthetic_auto/nested.rs

@@ -18,10 +18,10 @@ where
 }
 
 // @has nested/struct.Foo.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' 'impl<T> Send for \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' 'impl<T> Send for \
 // Foo<T> where T: Copy'
 //
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' \
 // 'impl<T> Sync for Foo<T> where T: Sync'
 pub struct Foo<T> {
     inner_field: Inner<T>,

src/test/rustdoc/synthetic_auto/no-redundancy.rs

@@ -19,7 +19,7 @@ where
 }
 
 // @has no_redundancy/struct.Outer.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<T> Send for \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<T> Send for \
 // Outer<T> where T: Copy + Send"
 pub struct Outer<T> {
     inner_field: Inner<T>,

src/test/rustdoc/synthetic_auto/project.rs

@@ -33,10 +33,10 @@ where
 }
 
 // @has project/struct.Foo.html
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<'c, K> Send \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<'c, K> Send \
 // for Foo<'c, K> where K: MyTrait<MyItem = bool>, 'c: 'static"
 //
-// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]/*/code' "impl<'c, K> Sync \
+// @has - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]//*/code' "impl<'c, K> Sync \
 // for Foo<'c, K> where K: MyTrait, <K as MyTrait>::MyItem: OtherTrait, 'c: 'static,"
 pub struct Foo<'c, K: 'c> {
     inner_field: Inner<'c, K>,