16 files changed, 200 insertions, 7 deletions
diff --git a/src/test/codegen/tune-cpu-on-functions.rs b/src/test/codegen/tune-cpu-on-functions.rs
new file mode 100644
index 00000000000..9121799cdbf
--- /dev/null
+++ b/src/test/codegen/tune-cpu-on-functions.rs
@@ -0,0 +1,21 @@
+// This test makes sure that functions get annotated with the proper
+// "tune-cpu" attribute in LLVM.
+
+// no-prefer-dynamic
+// ignore-tidy-linelength
+// compile-flags: -C no-prepopulate-passes -C panic=abort -C linker-plugin-lto -Cpasses=name-anon-globals -Z tune-cpu=generic
+
+#![crate_type = "staticlib"]
+
+// CHECK-LABEL: define {{.*}} @exported() {{.*}} #0
+#[no_mangle]
+pub extern fn exported() {
+    not_exported();
+}
+
+// CHECK-LABEL: ; tune_cpu_on_functions::not_exported
+// CHECK-NEXT: ; Function Attrs:
+// CHECK-NEXT: define {{.*}}() {{.*}} #0
+fn not_exported() {}
+
+// CHECK: attributes #0 = {{.*}} "tune-cpu"="{{.*}}"
diff --git a/src/test/incremental/thinlto/cgu_invalidated_via_import.rs b/src/test/incremental/thinlto/cgu_invalidated_via_import.rs
index 8160f8f3a99..5fe435d796f 100644
--- a/src/test/incremental/thinlto/cgu_invalidated_via_import.rs
+++ b/src/test/incremental/thinlto/cgu_invalidated_via_import.rs
@@ -33,7 +33,9 @@ mod foo {
 
     #[cfg(not(cfail1))]
     pub fn inlined_fn() -> u32 {
-        1234
+        // See `cgu_keeps_identical_fn.rs` for why this is different
+        // from the other version of this function.
+        12345
     }
 }
 
diff --git a/src/test/incremental/thinlto/cgu_keeps_identical_fn.rs b/src/test/incremental/thinlto/cgu_keeps_identical_fn.rs
new file mode 100644
index 00000000000..0fd5abee118
--- /dev/null
+++ b/src/test/incremental/thinlto/cgu_keeps_identical_fn.rs
@@ -0,0 +1,47 @@
+// This test is almost identical to `cgu_invalided_via_import`, except that
+// the two versions of `inline_fn` are identical. Neither version of `inlined_fn`
+// ends up with any spans in its LLVM bitecode, so LLVM is able to skip
+// re-building any modules which import 'inlined_fn'
+
+// revisions: cfail1 cfail2 cfail3
+// compile-flags: -Z query-dep-graph -O
+// build-pass (FIXME(62277): could be check-pass?)
+
+#![feature(rustc_attrs)]
+#![crate_type="rlib"]
+
+#![rustc_expected_cgu_reuse(module="cgu_keeps_identical_fn-foo",
+                            cfg="cfail2",
+                            kind="no")]
+#![rustc_expected_cgu_reuse(module="cgu_keeps_identical_fn-foo",
+                            cfg="cfail3",
+                            kind="post-lto")]
+
+#![rustc_expected_cgu_reuse(module="cgu_keeps_identical_fn-bar",
+                            cfg="cfail2",
+                            kind="post-lto")]
+#![rustc_expected_cgu_reuse(module="cgu_keeps_identical_fn-bar",
+                            cfg="cfail3",
+                            kind="post-lto")]
+
+mod foo {
+
+    // Trivial functions like this one are imported very reliably by ThinLTO.
+    #[cfg(cfail1)]
+    pub fn inlined_fn() -> u32 {
+        1234
+    }
+
+    #[cfg(not(cfail1))]
+    pub fn inlined_fn() -> u32 {
+        1234
+    }
+}
+
+pub mod bar {
+    use foo::inlined_fn;
+
+    pub fn caller() -> u32 {
+        inlined_fn()
+    }
+}
diff --git a/src/test/incremental/thinlto/independent_cgus_dont_affect_each_other.rs b/src/test/incremental/thinlto/independent_cgus_dont_affect_each_other.rs
index 24e5d2438bd..045f2011958 100644
--- a/src/test/incremental/thinlto/independent_cgus_dont_affect_each_other.rs
+++ b/src/test/incremental/thinlto/independent_cgus_dont_affect_each_other.rs
@@ -37,7 +37,9 @@ mod foo {
 
     #[cfg(not(cfail1))]
     pub fn inlined_fn() -> u32 {
-        1234
+        // See `cgu_keeps_identical_fn.rs` for why this is different
+        // from the other version of this function.
+        12345
     }
 }
 
diff --git a/src/test/rustdoc-ui/coverage/allow_missing_docs.rs b/src/test/rustdoc-ui/coverage/allow_missing_docs.rs
new file mode 100644
index 00000000000..c077be31b20
--- /dev/null
+++ b/src/test/rustdoc-ui/coverage/allow_missing_docs.rs
@@ -0,0 +1,41 @@
+// compile-flags:-Z unstable-options --show-coverage
+// check-pass
+
+//! Make sure to have some docs on your crate root
+
+#[allow(missing_docs)]
+pub mod mod_foo {
+    pub struct Bar;
+}
+
+/// This is a struct with a `#[allow(missing_docs)]`
+pub struct AllowTheMissingDocs {
+    #[allow(missing_docs)]
+    pub empty_str: String,
+
+    /// This has
+    #[allow(missing_docs)]
+    /// but also has documentation comments
+    pub hello: usize,
+
+    /// The doc id just to create a boilerplate comment
+    pub doc_id: Vec<u8>,
+}
+
+/// A function that has a documentation
+pub fn this_is_func() {}
+
+#[allow(missing_docs)]
+pub struct DemoStruct {
+    something: usize,
+}
+
+#[allow(missing_docs)]
+pub mod bar {
+    #[warn(missing_docs)]
+    pub struct Bar { //~ WARN
+        pub f: u32, //~ WARN
+    }
+
+    pub struct NeedsNoDocs;
+}
diff --git a/src/test/rustdoc-ui/coverage/allow_missing_docs.stderr b/src/test/rustdoc-ui/coverage/allow_missing_docs.stderr
new file mode 100644
index 00000000000..3d5b512d14d
--- /dev/null
+++ b/src/test/rustdoc-ui/coverage/allow_missing_docs.stderr
@@ -0,0 +1,20 @@
+warning: missing documentation for a struct
+  --> $DIR/allow_missing_docs.rs:36:5
+   |
+LL |     pub struct Bar {
+   |     ^^^^^^^^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/allow_missing_docs.rs:35:12
+   |
+LL |     #[warn(missing_docs)]
+   |            ^^^^^^^^^^^^
+
+warning: missing documentation for a struct field
+  --> $DIR/allow_missing_docs.rs:37:9
+   |
+LL |         pub f: u32,
+   |         ^^^^^^^^^^
+
+warning: 2 warnings emitted
+
diff --git a/src/test/rustdoc-ui/coverage/allow_missing_docs.stdout b/src/test/rustdoc-ui/coverage/allow_missing_docs.stdout
new file mode 100644
index 00000000000..17e8ee9e23d
--- /dev/null
+++ b/src/test/rustdoc-ui/coverage/allow_missing_docs.stdout
@@ -0,0 +1,7 @@
++-------------------------------------+------------+------------+------------+------------+
+| File                                | Documented | Percentage |   Examples | Percentage |
++-------------------------------------+------------+------------+------------+------------+
+| ...i/coverage/allow_missing_docs.rs |          5 |      71.4% |          0 |       0.0% |
++-------------------------------------+------------+------------+------------+------------+
+| Total                               |          5 |      71.4% |          0 |       0.0% |
++-------------------------------------+------------+------------+------------+------------+
diff --git a/src/test/rustdoc-ui/intra-links-ambiguity.rs b/src/test/rustdoc-ui/intra-links-ambiguity.rs
index d1597cdca66..f63435337cf 100644
--- a/src/test/rustdoc-ui/intra-links-ambiguity.rs
+++ b/src/test/rustdoc-ui/intra-links-ambiguity.rs
@@ -34,3 +34,7 @@ pub mod foo {
 ///
 /// Ambiguous non-implied shortcut link [`foo::bar`]. //~ERROR `foo::bar`
 pub struct Docs {}
+
+/// [true] //~ ERROR `true` is both a module and a builtin type
+/// [primitive@true]
+pub mod r#true {}
diff --git a/src/test/rustdoc-ui/intra-links-ambiguity.stderr b/src/test/rustdoc-ui/intra-links-ambiguity.stderr
index 17891ca05ef..21b92a96737 100644
--- a/src/test/rustdoc-ui/intra-links-ambiguity.stderr
+++ b/src/test/rustdoc-ui/intra-links-ambiguity.stderr
@@ -82,5 +82,20 @@ help: to link to the function, add parentheses
 LL | /// Ambiguous non-implied shortcut link [`foo::bar()`].
    |                                          ^^^^^^^^^^^^
 
-error: aborting due to 5 previous errors
+error: `true` is both a module and a builtin type
+  --> $DIR/intra-links-ambiguity.rs:38:6
+   |
+LL | /// [true]
+   |      ^^^^ ambiguous link
+   |
+help: to link to the module, prefix with `mod@`
+   |
+LL | /// [mod@true]
+   |      ^^^^^^^^
+help: to link to the builtin type, prefix with `prim@`
+   |
+LL | /// [prim@true]
+   |      ^^^^^^^^^
+
+error: aborting due to 6 previous errors
 
diff --git a/src/test/rustdoc/auxiliary/intra-link-reexport-additional-docs.rs b/src/test/rustdoc/auxiliary/intra-link-reexport-additional-docs.rs
new file mode 100644
index 00000000000..fc51995a94e
--- /dev/null
+++ b/src/test/rustdoc/auxiliary/intra-link-reexport-additional-docs.rs
@@ -0,0 +1,6 @@
+#![crate_name = "inner"]
+
+/// Links to [f()]
+pub struct Inner;
+
+pub fn f() {}
diff --git a/src/test/rustdoc/auxiliary/reexport-check.rs b/src/test/rustdoc/auxiliary/reexport-check.rs
new file mode 100644
index 00000000000..672ccb1cf0e
--- /dev/null
+++ b/src/test/rustdoc/auxiliary/reexport-check.rs
@@ -0,0 +1,2 @@
+/// Docs in original
+pub struct S;
diff --git a/src/test/rustdoc/intra-link-reexport-additional-docs.rs b/src/test/rustdoc/intra-link-reexport-additional-docs.rs
index adb072a7ed5..96f3580f305 100644
--- a/src/test/rustdoc/intra-link-reexport-additional-docs.rs
+++ b/src/test/rustdoc/intra-link-reexport-additional-docs.rs
@@ -1,6 +1,9 @@
+// aux-build:intra-link-reexport-additional-docs.rs
+// build-aux-docs
 #![crate_name = "foo"]
+extern crate inner;
 
-// @has foo/struct.JoinPathsError.html '//a[@href="../foo/fn.with_code.html"]' 'crate::with_code'
+// @has foo/struct.Inner.html '//a[@href="../foo/fn.with_code.html"]' 'crate::with_code'
 /// [crate::with_code]
 // @has - '//a[@href="../foo/fn.with_code.html"]' 'different text'
 /// [different text][with_code]
@@ -11,7 +14,9 @@
 #[doc = "has an attr in the way"]
 ///
 /// [reference link]: me_three
-pub use std::env::JoinPathsError;
+// Should still resolve links from the original module in that scope
+// @has - '//a[@href="../inner/fn.f.html"]' 'f()'
+pub use inner::Inner;
 
 pub fn with_code() {}
 pub fn me_too() {}
diff --git a/src/test/rustdoc/primitive-link.rs b/src/test/rustdoc/primitive-link.rs
index 8f69b894a22..3041ff77684 100644
--- a/src/test/rustdoc/primitive-link.rs
+++ b/src/test/rustdoc/primitive-link.rs
@@ -7,8 +7,7 @@
 // @has foo/struct.Foo.html '//*[@class="docblock"]/p/a[@href="https://doc.rust-lang.org/nightly/std/primitive.i32.html"]' 'std::primitive::i32'
 // @has foo/struct.Foo.html '//*[@class="docblock"]/p/a[@href="https://doc.rust-lang.org/nightly/std/primitive.str.html"]' 'std::primitive::str'
 
-// FIXME: this doesn't resolve
-// @ has foo/struct.Foo.html '//*[@class="docblock"]/p/a[@href="https://doc.rust-lang.org/nightly/std/primitive.i32.html#associatedconstant.MAX"]' 'std::primitive::i32::MAX'
+// @has foo/struct.Foo.html '//*[@class="docblock"]/p/a[@href="https://doc.rust-lang.org/nightly/std/primitive.i32.html#associatedconstant.MAX"]' 'std::primitive::i32::MAX'
 
 /// It contains [`u32`] and [i64].
 /// It also links to [std::primitive::i32], [std::primitive::str],
diff --git a/src/test/rustdoc/reexport-check.rs b/src/test/rustdoc/reexport-check.rs
index dea72b81a57..066b0cfe5e8 100644
--- a/src/test/rustdoc/reexport-check.rs
+++ b/src/test/rustdoc/reexport-check.rs
@@ -1,5 +1,8 @@
+// aux-build:reexport-check.rs
 #![crate_name = "foo"]
 
+extern crate reexport_check;
+
 // @!has 'foo/index.html' '//code' 'pub use self::i32;'
 // @has 'foo/index.html' '//tr[@class="module-item"]' 'i32'
 // @has 'foo/i32/index.html'
@@ -7,3 +10,8 @@ pub use std::i32;
 // @!has 'foo/index.html' '//code' 'pub use self::string::String;'
 // @has 'foo/index.html' '//tr[@class="module-item"]' 'String'
 pub use std::string::String;
+
+// @has 'foo/index.html' '//td[@class="docblock-short"]' 'Docs in original'
+// this is a no-op, but shows what happens if there's an attribute that isn't a doc-comment
+#[doc(inline)]
+pub use reexport_check::S;
diff --git a/src/test/ui/lto-opt-level-s.rs b/src/test/ui/lto-opt-level-s.rs
new file mode 100644
index 00000000000..a7d9d5024d3
--- /dev/null
+++ b/src/test/ui/lto-opt-level-s.rs
@@ -0,0 +1,7 @@
+// compile-flags: -Clinker-plugin-lto -Copt-level=s
+// build-pass
+// no-prefer-dynamic
+
+#![crate_type = "rlib"]
+
+pub fn foo() {}
diff --git a/src/test/ui/lto-opt-level-z.rs b/src/test/ui/lto-opt-level-z.rs
new file mode 100644
index 00000000000..bf1f5e2b263
--- /dev/null
+++ b/src/test/ui/lto-opt-level-z.rs
@@ -0,0 +1,7 @@
+// compile-flags: -Clinker-plugin-lto -Copt-level=z
+// build-pass
+// no-prefer-dynamic
+
+#![crate_type = "rlib"]
+
+pub fn foo() {}