Auto merge of #101333 - matthiaskrgr:rollup-qpf1otj, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #100121 (Try normalizing types without RevealAll in ParamEnv in MIR validation)
 - #100200 (Change implementation of `-Z gcc-ld` and `lld-wrapper` again)
 - #100814 ( Porting 'compiler/rustc_trait_selection' to translatable diagnostics - Part 1)
 - #101215 (Also replace the version placeholder in rustc_attr)
 - #101260 (Use `FILE_ATTRIBUTE_TAG_INFO` to get reparse tag)
 - #101323 (Remove unused .toggle-label CSS rule)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

10 files changed, 56 insertions, 29 deletions

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index c3aabb16a9b..c13e83f6c86 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -1281,7 +1281,9 @@ impl Step for Assemble {
                 compiler: build_compiler,
                 target: target_compiler.host,
             });
-            builder.copy(&lld_wrapper_exe, &gcc_ld_dir.join(exe("ld", target_compiler.host)));
+            for name in crate::LLD_FILE_NAMES {
+                builder.copy(&lld_wrapper_exe, &gcc_ld_dir.join(exe(name, target_compiler.host)));
+            }
         }
 
         if builder.config.rust_codegen_backends.contains(&INTERNER.intern_str("llvm")) {
diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index c01afa1fd3b..1a59b3958f1 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -423,8 +423,11 @@ impl Step for Rustc {
                 let gcc_lld_src_dir = src_dir.join("gcc-ld");
                 let gcc_lld_dst_dir = dst_dir.join("gcc-ld");
                 t!(fs::create_dir(&gcc_lld_dst_dir));
-                let exe_name = exe("ld", compiler.host);
-                builder.copy(&gcc_lld_src_dir.join(&exe_name), &gcc_lld_dst_dir.join(&exe_name));
+                for name in crate::LLD_FILE_NAMES {
+                    let exe_name = exe(name, compiler.host);
+                    builder
+                        .copy(&gcc_lld_src_dir.join(&exe_name), &gcc_lld_dst_dir.join(&exe_name));
+                }
             }
 
             // Man pages
diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 9336f958cf2..cc0cf12bd18 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -187,6 +187,9 @@ const LLVM_TOOLS: &[&str] = &[
     "opt",           // used to optimize LLVM bytecode
 ];
 
+/// LLD file names for all flavors.
+const LLD_FILE_NAMES: &[&str] = &["ld.lld", "ld64.lld", "lld-link", "wasm-ld"];
+
 pub const VERSION: usize = 2;
 
 /// Extra --check-cfg to add when building
diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index c7a9f247e20..ae0e3572a08 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -1241,12 +1241,6 @@ h3.variant {
 	margin-left: 24px;
 }
 
-.toggle-label {
-	display: inline-block;
-	margin-left: 4px;
-	margin-top: 3px;
-}
-
 :target > code, :target > .code-header {
 	opacity: 1;
 }
diff --git a/src/librustdoc/html/static/css/themes/ayu.css b/src/librustdoc/html/static/css/themes/ayu.css
index e301a793282..4f6dd645c27 100644
--- a/src/librustdoc/html/static/css/themes/ayu.css
+++ b/src/librustdoc/html/static/css/themes/ayu.css
@@ -242,7 +242,6 @@ a.test-arrow:hover {
 	color: #c5c5c5;
 }
 
-.toggle-label,
 .code-attribute {
 	color: #999;
 }
diff --git a/src/librustdoc/html/static/css/themes/dark.css b/src/librustdoc/html/static/css/themes/dark.css
index d5cd47c3e19..a37bbac5306 100644
--- a/src/librustdoc/html/static/css/themes/dark.css
+++ b/src/librustdoc/html/static/css/themes/dark.css
@@ -197,7 +197,6 @@ a.test-arrow:hover{
 	background-color: #4e8bca;
 }
 
-.toggle-label,
 .code-attribute {
 	color: #999;
 }
diff --git a/src/librustdoc/html/static/css/themes/light.css b/src/librustdoc/html/static/css/themes/light.css
index cff70268144..3d8e866fdc6 100644
--- a/src/librustdoc/html/static/css/themes/light.css
+++ b/src/librustdoc/html/static/css/themes/light.css
@@ -182,7 +182,6 @@ a.test-arrow:hover{
 	background-color: #4e8bca;
 }
 
-.toggle-label,
 .code-attribute {
 	color: #999;
 }
diff --git a/src/test/ui/mir/issue-99866.rs b/src/test/ui/mir/issue-99866.rs
new file mode 100644
index 00000000000..d39ae6ebf1d
--- /dev/null
+++ b/src/test/ui/mir/issue-99866.rs
@@ -0,0 +1,25 @@
+// check-pass
+pub trait Backend {
+    type DescriptorSetLayout;
+}
+
+pub struct Back;
+
+impl Backend for Back {
+    type DescriptorSetLayout = u32;
+}
+
+pub struct HalSetLayouts {
+    vertex_layout: <Back as Backend>::DescriptorSetLayout,
+}
+
+impl HalSetLayouts {
+    pub fn iter<DSL>(self) -> DSL
+    where
+        Back: Backend<DescriptorSetLayout = DSL>,
+    {
+        self.vertex_layout
+    }
+}
+
+fn main() {}
diff --git a/src/tools/lld-wrapper/src/main.rs b/src/tools/lld-wrapper/src/main.rs
index 90bd24a75e0..1795f3d7fe5 100644
--- a/src/tools/lld-wrapper/src/main.rs
+++ b/src/tools/lld-wrapper/src/main.rs
@@ -8,8 +8,8 @@
 //! make gcc/clang pass `-flavor <flavor>` as the first two arguments in the linker invocation
 //! and since Windows does not support symbolic links for files this wrapper is used in place of a
 //! symbolic link. It execs `../rust-lld -flavor <flavor>` by propagating the flavor argument
-//! passed to the wrapper as the first two arguments. On Windows it spawns a `..\rust-lld.exe`
-//! child process.
+//! obtained from the wrapper's name as the first two arguments.
+//! On Windows it spawns a `..\rust-lld.exe` child process.
 
 use std::fmt::Display;
 use std::path::{Path, PathBuf};
@@ -53,29 +53,32 @@ fn get_rust_lld_path(current_exe_path: &Path) -> PathBuf {
     rust_lld_path
 }
 
+/// Extract LLD flavor name from the lld-wrapper executable name.
+fn get_lld_flavor(current_exe_path: &Path) -> Result<&'static str, String> {
+    let stem = current_exe_path.file_stem();
+    Ok(match stem.and_then(|s| s.to_str()) {
+        Some("ld.lld") => "gnu",
+        Some("ld64.lld") => "darwin",
+        Some("lld-link") => "link",
+        Some("wasm-ld") => "wasm",
+        _ => return Err(format!("{:?}", stem)),
+    })
+}
+
 /// Returns the command for invoking rust-lld with the correct flavor.
-/// LLD only accepts the flavor argument at the first two arguments, so move it there.
+/// LLD only accepts the flavor argument at the first two arguments, so pass it there.
 ///
 /// Exits on error.
 fn get_rust_lld_command(current_exe_path: &Path) -> process::Command {
     let rust_lld_path = get_rust_lld_path(current_exe_path);
     let mut command = process::Command::new(rust_lld_path);
 
-    let mut flavor = None;
-    let args = env::args_os()
-        .skip(1)
-        .filter(|arg| match arg.to_str().and_then(|s| s.strip_prefix("-rustc-lld-flavor=")) {
-            Some(suffix) => {
-                flavor = Some(suffix.to_string());
-                false
-            }
-            None => true,
-        })
-        .collect::<Vec<_>>();
+    let flavor =
+        get_lld_flavor(current_exe_path).unwrap_or_exit_with("executable has unexpected name");
 
     command.arg("-flavor");
-    command.arg(flavor.unwrap_or_exit_with("-rustc-lld-flavor=<flavor> is not passed"));
-    command.args(args);
+    command.arg(flavor);
+    command.args(env::args_os().skip(1));
     command
 }
 
diff --git a/src/tools/replace-version-placeholder/src/main.rs b/src/tools/replace-version-placeholder/src/main.rs
index 146e53f2e9a..33b35d05415 100644
--- a/src/tools/replace-version-placeholder/src/main.rs
+++ b/src/tools/replace-version-placeholder/src/main.rs
@@ -14,7 +14,7 @@ fn main() {
             walk::filter_dirs(path)
                 // We exempt these as they require the placeholder
                 // for their operation
-                || path.ends_with("compiler/rustc_passes/src/lib_features.rs")
+                || path.ends_with("compiler/rustc_attr/src/builtin.rs")
                 || path.ends_with("src/tools/tidy/src/features/version.rs")
                 || path.ends_with("src/tools/replace-version-placeholder")
         },