Rollup of 6 pull requests

compiler/rustc_ast/src/tokenstream.rs

@@ -57,7 +57,9 @@ impl TokenTree {
         match (self, other) {
             (TokenTree::Token(token, _), TokenTree::Token(token2, _)) => token.kind == token2.kind,
             (TokenTree::Delimited(.., delim, tts), TokenTree::Delimited(.., delim2, tts2)) => {
-                delim == delim2 && tts.eq_unspanned(tts2)
+                delim == delim2
+                    && tts.len() == tts2.len()
+                    && tts.iter().zip(tts2.iter()).all(|(a, b)| a.eq_unspanned(b))
             }
             _ => false,
         }
@@ -694,18 +696,6 @@ impl TokenStream {
         TokenStreamIter::new(self)
     }
 
-    /// Compares two `TokenStream`s, checking equality without regarding span information.
-    pub fn eq_unspanned(&self, other: &TokenStream) -> bool {
-        let mut iter1 = self.iter();
-        let mut iter2 = other.iter();
-        for (tt1, tt2) in iter::zip(&mut iter1, &mut iter2) {
-            if !tt1.eq_unspanned(tt2) {
-                return false;
-            }
-        }
-        iter1.next().is_none() && iter2.next().is_none()
-    }
-
     /// Create a token stream containing a single token with alone spacing. The
     /// spacing used for the final token in a constructed stream doesn't matter
     /// because it's never used. In practice we arbitrarily use

compiler/rustc_codegen_llvm/src/llvm_util.rs

@@ -282,6 +282,14 @@ pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option<LLVMFea
         }
         // Filter out features that are not supported by the current LLVM version
         ("riscv32" | "riscv64", "zacas") if get_version().0 < 20 => None,
+        (
+            "s390x",
+            "message-security-assist-extension12"
+            | "concurrent-functions"
+            | "miscellaneous-extensions-4"
+            | "vector-enhancements-3"
+            | "vector-packed-decimal-enhancement-3",
+        ) if get_version().0 < 20 => None,
         // Enable the evex512 target feature if an avx512 target feature is enabled.
         ("x86", s) if s.starts_with("avx512") => Some(LLVMFeature::with_dependencies(
             s,

compiler/rustc_parse/src/parser/tokenstream/tests.rs

@@ -14,6 +14,10 @@ fn sp(a: u32, b: u32) -> Span {
     Span::with_root_ctxt(BytePos(a), BytePos(b))
 }
 
+fn cmp_token_stream(a: &TokenStream, b: &TokenStream) -> bool {
+    a.len() == b.len() && a.iter().zip(b.iter()).all(|(x, y)| x.eq_unspanned(y))
+}
+
 #[test]
 fn test_concat() {
     create_default_session_globals_then(|| {
@@ -25,7 +29,7 @@ fn test_concat() {
         eq_res.push_stream(test_snd);
         assert_eq!(test_res.iter().count(), 5);
         assert_eq!(eq_res.iter().count(), 5);
-        assert_eq!(test_res.eq_unspanned(&eq_res), true);
+        assert_eq!(cmp_token_stream(&test_res, &eq_res), true);
     })
 }
 
@@ -104,7 +108,7 @@ fn test_dotdotdot() {
         stream.push_tree(TokenTree::token_joint(token::Dot, sp(0, 1)));
         stream.push_tree(TokenTree::token_joint(token::Dot, sp(1, 2)));
         stream.push_tree(TokenTree::token_alone(token::Dot, sp(2, 3)));
-        assert!(stream.eq_unspanned(&string_to_ts("...")));
+        assert!(cmp_token_stream(&stream, &string_to_ts("...")));
         assert_eq!(stream.iter().count(), 1);
     })
 }

compiler/rustc_target/src/target_features.rs

@@ -710,29 +710,35 @@ static LOONGARCH_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
+#[rustfmt::skip]
 const IBMZ_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("backchain", Unstable(sym::s390x_target_feature), &[]),
+    ("concurrent-functions", Unstable(sym::s390x_target_feature), &[]),
     ("deflate-conversion", Unstable(sym::s390x_target_feature), &[]),
     ("enhanced-sort", Unstable(sym::s390x_target_feature), &[]),
     ("guarded-storage", Unstable(sym::s390x_target_feature), &[]),
     ("high-word", Unstable(sym::s390x_target_feature), &[]),
+    // LLVM does not define message-security-assist-extension versions 1, 2, 6, 10 and 11.
+    ("message-security-assist-extension12", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension3", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension4", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension5", Unstable(sym::s390x_target_feature), &[]),
+    ("message-security-assist-extension8", Unstable(sym::s390x_target_feature), &["message-security-assist-extension3"]),
+    ("message-security-assist-extension9", Unstable(sym::s390x_target_feature), &["message-security-assist-extension3", "message-security-assist-extension4"]),
+    ("miscellaneous-extensions-2", Unstable(sym::s390x_target_feature), &[]),
+    ("miscellaneous-extensions-3", Unstable(sym::s390x_target_feature), &[]),
+    ("miscellaneous-extensions-4", Unstable(sym::s390x_target_feature), &[]),
     ("nnp-assist", Unstable(sym::s390x_target_feature), &["vector"]),
     ("transactional-execution", Unstable(sym::s390x_target_feature), &[]),
     ("vector", Unstable(sym::s390x_target_feature), &[]),
     ("vector-enhancements-1", Unstable(sym::s390x_target_feature), &["vector"]),
     ("vector-enhancements-2", Unstable(sym::s390x_target_feature), &["vector-enhancements-1"]),
+    ("vector-enhancements-3", Unstable(sym::s390x_target_feature), &["vector-enhancements-2"]),
     ("vector-packed-decimal", Unstable(sym::s390x_target_feature), &["vector"]),
-    (
-        "vector-packed-decimal-enhancement",
-        Unstable(sym::s390x_target_feature),
-        &["vector-packed-decimal"],
-    ),
-    (
-        "vector-packed-decimal-enhancement-2",
-        Unstable(sym::s390x_target_feature),
-        &["vector-packed-decimal-enhancement"],
-    ),
+    ("vector-packed-decimal-enhancement", Unstable(sym::s390x_target_feature), &["vector-packed-decimal"]),
+    ("vector-packed-decimal-enhancement-2", Unstable(sym::s390x_target_feature), &["vector-packed-decimal-enhancement"]),
+    ("vector-packed-decimal-enhancement-3", Unstable(sym::s390x_target_feature), &["vector-packed-decimal-enhancement-2"]),
     // tidy-alphabetical-end
 ];
 

library/alloc/src/collections/btree/map.rs

@@ -1416,18 +1416,18 @@ impl<K, V, A: Allocator + Clone> BTreeMap<K, V, A> {
     ///
     /// # Examples
     ///
-    /// Splitting a map into even and odd keys, reusing the original map:
-    ///
     /// ```
     /// #![feature(btree_extract_if)]
     /// use std::collections::BTreeMap;
     ///
+    /// // Splitting a map into even and odd keys, reusing the original map:
     /// let mut map: BTreeMap<i32, i32> = (0..8).map(|x| (x, x)).collect();
     /// let evens: BTreeMap<_, _> = map.extract_if(.., |k, _v| k % 2 == 0).collect();
     /// let odds = map;
     /// assert_eq!(evens.keys().copied().collect::<Vec<_>>(), [0, 2, 4, 6]);
     /// assert_eq!(odds.keys().copied().collect::<Vec<_>>(), [1, 3, 5, 7]);
     ///
+    /// // Splitting a map into low and high halves, reusing the original map:
     /// let mut map: BTreeMap<i32, i32> = (0..8).map(|x| (x, x)).collect();
     /// let low: BTreeMap<_, _> = map.extract_if(0..4, |_k, _v| true).collect();
     /// let high = map;

library/alloc/src/collections/btree/set.rs

@@ -1201,21 +1201,21 @@ impl<T, A: Allocator + Clone> BTreeSet<T, A> {
     /// [`retain`]: BTreeSet::retain
     /// # Examples
     ///
-    /// Splitting a set into even and odd values, reusing the original set:
-    ///
     /// ```
     /// #![feature(btree_extract_if)]
     /// use std::collections::BTreeSet;
     ///
+    /// // Splitting a set into even and odd values, reusing the original set:
     /// let mut set: BTreeSet<i32> = (0..8).collect();
     /// let evens: BTreeSet<_> = set.extract_if(.., |v| v % 2 == 0).collect();
     /// let odds = set;
     /// assert_eq!(evens.into_iter().collect::<Vec<_>>(), vec![0, 2, 4, 6]);
     /// assert_eq!(odds.into_iter().collect::<Vec<_>>(), vec![1, 3, 5, 7]);
     ///
-    /// let mut map: BTreeSet<i32> = (0..8).collect();
-    /// let low: BTreeSet<_> = map.extract_if(0..4, |_v| true).collect();
-    /// let high = map;
+    /// // Splitting a set into low and high halves, reusing the original set:
+    /// let mut set: BTreeSet<i32> = (0..8).collect();
+    /// let low: BTreeSet<_> = set.extract_if(0..4, |_v| true).collect();
+    /// let high = set;
     /// assert_eq!(low.into_iter().collect::<Vec<_>>(), [0, 1, 2, 3]);
     /// assert_eq!(high.into_iter().collect::<Vec<_>>(), [4, 5, 6, 7]);
     /// ```

library/core/src/convert/num.rs

@@ -175,7 +175,6 @@ impl_from!(u8 => f16, #[stable(feature = "lossless_float_conv", since = "1.6.0")
 impl_from!(u8 => f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u8 => f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u8 => f128, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
-impl_from!(u16 => f16, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u16 => f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u16 => f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);
 impl_from!(u16 => f128, #[stable(feature = "lossless_float_conv", since = "1.6.0")]);

src/tools/clippy/clippy_utils/src/ast_utils/mod.rs

@@ -960,5 +960,7 @@ pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool {
 }
 
 pub fn eq_delim_args(l: &DelimArgs, r: &DelimArgs) -> bool {
-    l.delim == r.delim && l.tokens.eq_unspanned(&r.tokens)
+    l.delim == r.delim
+        && l.tokens.len() == r.tokens.len()
+        && l.tokens.iter().zip(r.tokens.iter()).all(|(a, b)| a.eq_unspanned(b))
 }

tests/ui/check-cfg/target_feature.stderr

@@ -62,6 +62,7 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `c`
 `cache`
 `cmpxchg16b`
+`concurrent-functions`
 `crc`
 `crt-static`
 `cssc`
@@ -159,6 +160,15 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `lzcnt`
 `m`
 `mclass`
+`message-security-assist-extension12`
+`message-security-assist-extension3`
+`message-security-assist-extension4`
+`message-security-assist-extension5`
+`message-security-assist-extension8`
+`message-security-assist-extension9`
+`miscellaneous-extensions-2`
+`miscellaneous-extensions-3`
+`miscellaneous-extensions-4`
 `mops`
 `movbe`
 `movrs`
@@ -287,9 +297,11 @@ LL |     cfg!(target_feature = "_UNEXPECTED_VALUE");
 `vector`
 `vector-enhancements-1`
 `vector-enhancements-2`
+`vector-enhancements-3`
 `vector-packed-decimal`
 `vector-packed-decimal-enhancement`
 `vector-packed-decimal-enhancement-2`
+`vector-packed-decimal-enhancement-3`
 `vfp2`
 `vfp3`
 `vfp4`

tests/ui/issues/issue-10806.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-pass
 #![allow(unused_imports)]
 

tests/ui/issues/issue-12729.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 #![allow(dead_code)]
 

tests/ui/issues/issue-13105.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 
 trait Foo {

tests/ui/issues/issue-13775.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 
 trait Foo {

tests/ui/issues/issue-15774.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-pass
 
 #![deny(warnings)]

tests/ui/issues/issue-20427.rs

@@ -59,7 +59,7 @@ mod reuse {
 
     pub fn check<u16>() {
         assert_eq!(size_of::<u8>(), 8);
-        assert_eq!(size_of::<::u64>(), 0);
+        assert_eq!(size_of::<crate::u64>(), 0);
         assert_eq!(size_of::<i16>(), 3 * size_of::<*const ()>());
         assert_eq!(size_of::<u16>(), 0);
     }

tests/ui/issues/issue-28983.rs

@@ -7,7 +7,7 @@ impl Test for u32 {
 
 pub mod export {
     #[no_mangle]
-    pub extern "C" fn issue_28983(t: <u32 as ::Test>::T) -> i32 { t*3 }
+    pub extern "C" fn issue_28983(t: <u32 as crate::Test>::T) -> i32 { t*3 }
 }
 
 // to test both exporting and importing functions, import

tests/ui/issues/issue-31776.rs

@@ -8,7 +8,7 @@ struct S;
 
 mod m {
     fn f() {
-        impl ::S {
+        impl crate::S {
             pub fn s(&self) {}
         }
     }
@@ -24,7 +24,7 @@ pub struct S1;
 fn f() {
     pub struct Z;
 
-    impl ::Tr for ::S1 {
+    impl crate::Tr for crate::S1 {
         type A = Z; // Private-in-public error unless `struct Z` is pub
     }
 }
@@ -43,7 +43,7 @@ mod m1 {
             pub field: u8
         }
 
-        impl ::Tr1 for ::S2 {
+        impl crate::Tr1 for crate::S2 {
             type A = Z;
             fn pull(&self) -> Self::A { Z{field: 10} }
         }

tests/ui/issues/issue-32797.rs

@@ -7,7 +7,7 @@ mod bar {
 
 pub use baz::*;
 mod baz {
-    pub use main as f;
+    pub use crate::main as f;
 }
 
 pub fn main() {}

tests/ui/issues/issue-34074.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ check-pass
 // Make sure several unnamed function parameters don't conflict with each other
 

tests/ui/issues/issue-41053.rs

@@ -11,7 +11,7 @@ impl Iterator for Foo {
     type Item = Box<dyn Trait>;
     fn next(&mut self) -> Option<Box<dyn Trait>> {
         extern crate issue_41053;
-        impl ::Trait for issue_41053::Test {
+        impl crate::Trait for issue_41053::Test {
             fn foo(&self) {}
         }
         Some(Box::new(issue_41053::Test))

tests/ui/issues/issue-47364.rs

@@ -18,18 +18,18 @@ pub enum IResult<I,O> {
     Incomplete(u32, u64)
 }
 
-pub fn multispace<T: Copy>(input: T) -> ::IResult<i8, i8> {
-    ::IResult::Done(0, 0)
+pub fn multispace<T: Copy>(input: T) -> crate::IResult<i8, i8> {
+    crate::IResult::Done(0, 0)
 }
 
 mod nom_sql {
-    fn where_clause(i: &[u8]) -> ::IResult<&[u8], Option<String>> {
-        let X = match ::multispace(i) {
-            ::IResult::Done(..) => ::IResult::Done(i, None::<String>),
-            _ => ::IResult::Error(::Err::NodePosition(0)),
+    fn where_clause(i: &[u8]) -> crate::IResult<&[u8], Option<String>> {
+        let X = match crate::multispace(i) {
+            crate::IResult::Done(..) => crate::IResult::Done(i, None::<String>),
+            _ => crate::IResult::Error(crate::Err::NodePosition(0)),
         };
         match X {
-            ::IResult::Done(_, _) => ::IResult::Done(i, None),
+            crate::IResult::Done(_, _) => crate::IResult::Done(i, None),
             _ => X
         }
     }
@@ -39,16 +39,16 @@ mod nom_sql {
             match {
                 where_clause(i)
             } {
-                ::IResult::Done(_, o) => ::IResult::Done(i, Some(o)),
-                ::IResult::Error(_) => ::IResult::Done(i, None),
-                _ => ::IResult::Incomplete(0, 0),
+                crate::IResult::Done(_, o) => crate::IResult::Done(i, Some(o)),
+                crate::IResult::Error(_) => crate::IResult::Done(i, None),
+                _ => crate::IResult::Incomplete(0, 0),
             }
         } {
-            ::IResult::Done(z, _) => ::IResult::Done(z, None::<String>),
+            crate::IResult::Done(z, _) => crate::IResult::Done(z, None::<String>),
             _ => return ()
         };
         match Y {
-            ::IResult::Done(x, _) => {
+            crate::IResult::Done(x, _) => {
                 let bytes = b";   ";
                 let len = x.len();
                 bytes[len];

tests/ui/issues/issue-50187.rs

@@ -13,20 +13,20 @@ mod macro_ns {
 }
 
 mod merge2 {
-    pub use type_ns::A;
-    pub use value_ns::A;
+    pub use crate::type_ns::A;
+    pub use crate::value_ns::A;
 }
 mod merge3 {
-    pub use type_ns::A;
-    pub use value_ns::A;
-    pub use macro_ns::A;
+    pub use crate::type_ns::A;
+    pub use crate::value_ns::A;
+    pub use crate::macro_ns::A;
 }
 
 mod use2 {
-    pub use merge2::A;
+    pub use crate::merge2::A;
 }
 mod use3 {
-    pub use merge3::A;
+    pub use crate::merge3::A;
 }
 
 fn main() {

tests/ui/issues/issue-50571.fixed

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-rustfix
 
 #![allow(dead_code)]

tests/ui/issues/issue-50571.rs

@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ run-rustfix
 
 #![allow(dead_code)]