Auto merge of rust-lang#69094 - Dylan-DPC:rollup-4qe7uv1, r=Dylan-DPC

Rollup of 8 pull requests

Successful merges:

 - rust-lang#67585 (Improve `char::is_ascii_*` codegen)
 - rust-lang#68914 (Speed up `SipHasher128`.)
 - rust-lang#68994 (rustbuild: include channel in sanitizers installed name)
 - rust-lang#69032 (ICE in nightly-2020-02-08: handle TerminatorKind::Yield in librustc_mir::transform::promote_consts::Validator method)
 - rust-lang#69034 (parser: Remove `Parser::prev_token_kind`)
 - rust-lang#69042 (Remove backtrace header text)
 - rust-lang#69059 (Remove a few unused objects)
 - rust-lang#69089 (Properly use the darwin archive format on Apple targets)

Failed merges:

r? @ghost

Cargo.lock

@@ -121,9 +121,9 @@ checksum = "1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2"
 
 [[package]]
 name = "backtrace"
-version = "0.3.40"
+version = "0.3.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "924c76597f0d9ca25d762c25a4d369d51267536465dc5064bdf0eb073ed477ea"
+checksum = "e4036b9bf40f3cf16aba72a3d65e8a520fc4bafcdc7079aea8f848c58c5b5536"
 dependencies = [
  "backtrace-sys",
  "cfg-if",

src/bootstrap/native.rs

@@ -571,7 +571,7 @@ impl Step for Sanitizers {
         }
 
         let out_dir = builder.native_dir(self.target).join("sanitizers");
-        let runtimes = supported_sanitizers(&out_dir, self.target);
+        let runtimes = supported_sanitizers(&out_dir, self.target, &builder.config.channel);
         if runtimes.is_empty() {
             return runtimes;
         }
@@ -635,7 +635,11 @@ pub struct SanitizerRuntime {
 }
 
 /// Returns sanitizers available on a given target.
-fn supported_sanitizers(out_dir: &Path, target: Interned<String>) -> Vec<SanitizerRuntime> {
+fn supported_sanitizers(
+    out_dir: &Path,
+    target: Interned<String>,
+    channel: &str,
+) -> Vec<SanitizerRuntime> {
     let mut result = Vec::new();
     match &*target {
         "x86_64-apple-darwin" => {
@@ -644,7 +648,7 @@ fn supported_sanitizers(out_dir: &Path, target: Interned<String>) -> Vec<Sanitiz
                     cmake_target: format!("clang_rt.{}_osx_dynamic", s),
                     path: out_dir
                         .join(&format!("build/lib/darwin/libclang_rt.{}_osx_dynamic.dylib", s)),
-                    name: format!("librustc_rt.{}.dylib", s),
+                    name: format!("librustc-{}_rt.{}.dylib", channel, s),
                 });
             }
         }
@@ -653,7 +657,7 @@ fn supported_sanitizers(out_dir: &Path, target: Interned<String>) -> Vec<Sanitiz
                 result.push(SanitizerRuntime {
                     cmake_target: format!("clang_rt.{}-x86_64", s),
                     path: out_dir.join(&format!("build/lib/linux/libclang_rt.{}-x86_64.a", s)),
-                    name: format!("librustc_rt.{}.a", s),
+                    name: format!("librustc-{}_rt.{}.a", channel, s),
                 });
             }
         }
@@ -662,7 +666,7 @@ fn supported_sanitizers(out_dir: &Path, target: Interned<String>) -> Vec<Sanitiz
                 result.push(SanitizerRuntime {
                     cmake_target: format!("clang_rt.{}-x86_64", s),
                     path: out_dir.join(&format!("build/lib/fuchsia/libclang_rt.{}-x86_64.a", s)),
-                    name: format!("librustc_rt.{}.a", s),
+                    name: format!("librustc-{}_rt.{}.a", channel, s),
                 });
             }
         }
@@ -671,7 +675,7 @@ fn supported_sanitizers(out_dir: &Path, target: Interned<String>) -> Vec<Sanitiz
                 result.push(SanitizerRuntime {
                     cmake_target: format!("clang_rt.{}-aarch64", s),
                     path: out_dir.join(&format!("build/lib/fuchsia/libclang_rt.{}-aarch64.a", s)),
-                    name: format!("librustc_rt.{}.a", s),
+                    name: format!("librustc-{}_rt.{}.a", channel, s),
                 });
             }
         }

src/libcore/char/methods.rs

@@ -1075,7 +1075,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_alphabetic(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_alphabetic()
+        match *self {
+            'A'..='Z' | 'a'..='z' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII uppercase character:
@@ -1108,7 +1111,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_uppercase(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_uppercase()
+        match *self {
+            'A'..='Z' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII lowercase character:
@@ -1141,7 +1147,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_lowercase(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_lowercase()
+        match *self {
+            'a'..='z' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII alphanumeric character:
@@ -1177,7 +1186,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_alphanumeric(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_alphanumeric()
+        match *self {
+            '0'..='9' | 'A'..='Z' | 'a'..='z' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII decimal digit:
@@ -1210,7 +1222,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_digit(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_digit()
+        match *self {
+            '0'..='9' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII hexadecimal digit:
@@ -1246,7 +1261,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_hexdigit(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_hexdigit()
+        match *self {
+            '0'..='9' | 'A'..='F' | 'a'..='f' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII punctuation character:
@@ -1283,7 +1301,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_punctuation(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_punctuation()
+        match *self {
+            '!'..='/' | ':'..='@' | '['..='`' | '{'..='~' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII graphic character:
@@ -1316,7 +1337,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_graphic(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_graphic()
+        match *self {
+            '!'..='~' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII whitespace character:
@@ -1366,7 +1390,10 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_whitespace(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_whitespace()
+        match *self {
+            '\t' | '\n' | '\x0C' | '\r' | ' ' => true,
+            _ => false,
+        }
     }
 
     /// Checks if the value is an ASCII control character:
@@ -1401,6 +1428,9 @@ impl char {
     #[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
     #[inline]
     pub const fn is_ascii_control(&self) -> bool {
-        self.is_ascii() && (*self as u8).is_ascii_control()
+        match *self {
+            '\0'..='\x1F' | '\x7F' => true,
+            _ => false,
+        }
     }
 }

src/librustc/infer/region_constraints/mod.rs

@@ -339,8 +339,6 @@ impl TaintDirections {
     }
 }
 
-pub struct ConstraintInfo {}
-
 impl<'tcx> RegionConstraintCollector<'tcx> {
     pub fn new() -> Self {
         Self::default()

src/librustc_codegen_llvm/llvm/ffi.rs

@@ -459,6 +459,7 @@ pub enum ArchiveKind {
     Other,
     K_GNU,
     K_BSD,
+    K_DARWIN,
     K_COFF,
 }
 

src/librustc_codegen_llvm/llvm/mod.rs

@@ -69,6 +69,7 @@ impl FromStr for ArchiveKind {
         match s {
             "gnu" => Ok(ArchiveKind::K_GNU),
             "bsd" => Ok(ArchiveKind::K_BSD),
+            "darwin" => Ok(ArchiveKind::K_DARWIN),
             "coff" => Ok(ArchiveKind::K_COFF),
             _ => Err(()),
         }

src/librustc_codegen_ssa/back/link.rs

@@ -765,20 +765,23 @@ fn link_sanitizer_runtime(sess: &Session, crate_type: config::CrateType, linker:
     let default_sysroot = filesearch::get_or_default_sysroot();
     let default_tlib =
         filesearch::make_target_lib_path(&default_sysroot, sess.opts.target_triple.triple());
+    let channel = option_env!("CFG_RELEASE_CHANNEL")
+        .map(|channel| format!("-{}", channel))
+        .unwrap_or_default();
 
     match sess.opts.target_triple.triple() {
         "x86_64-apple-darwin" => {
             // On Apple platforms, the sanitizer is always built as a dylib, and
             // LLVM will link to `@rpath/*.dylib`, so we need to specify an
             // rpath to the library as well (the rpath should be absolute, see
             // PR #41352 for details).
-            let libname = format!("rustc_rt.{}", name);
+            let libname = format!("rustc{}_rt.{}", channel, name);
             let rpath = default_tlib.to_str().expect("non-utf8 component in path");
             linker.args(&["-Wl,-rpath".into(), "-Xlinker".into(), rpath.into()]);
             linker.link_dylib(Symbol::intern(&libname));
         }
         "x86_64-unknown-linux-gnu" | "x86_64-fuchsia" | "aarch64-fuchsia" => {
-            let filename = format!("librustc_rt.{}.a", name);
+            let filename = format!("librustc{}_rt.{}.a", channel, name);
             let path = default_tlib.join(&filename);
             linker.link_whole_rlib(&path);
         }

src/librustc_codegen_ssa/build.rs

@@ -0,0 +1,4 @@
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+    println!("cargo:rerun-if-env-changed=CFG_RELEASE_CHANNEL");
+}