Give tidy the good news about C-SKY

src/ci/docker/host-x86_64/x86_64-gnu-llvm-17/Dockerfile

@@ -45,10 +45,6 @@ RUN sh /scripts/sccache.sh
 ENV NO_DOWNLOAD_CI_LLVM 1
 ENV EXTERNAL_LLVM 1
 
-# This is not the latest LLVM version, so some components required by tests may
-# be missing.
-ENV IS_NOT_LATEST_LLVM 1
-
 # Using llvm-link-shared due to libffi issues -- see #34486
 ENV RUST_CONFIGURE_ARGS \
       --build=x86_64-unknown-linux-gnu \

src/ci/run.sh

@@ -89,6 +89,8 @@ RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --dist-compression-formats=xz"
 # (to avoid spending a lot of time cloning llvm)
 if [ "$EXTERNAL_LLVM" = "" ]; then
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set build.optimized-compiler-builtins"
+  # Likewise, only demand we test all LLVM components if we know we built LLVM with them
+  export COMPILETEST_NEEDS_ALL_LLVM_COMPONENTS=1
 elif [ "$DEPLOY$DEPLOY_ALT" = "1" ]; then
     echo "error: dist builds should always use optimized compiler-rt!" >&2
     exit 1
@@ -169,12 +171,6 @@ else
   fi
 fi
 
-# Unless we're using an older version of LLVM, check that all LLVM components
-# used by tests are available.
-if [ "$IS_NOT_LATEST_LLVM" = "" ]; then
-  export COMPILETEST_NEEDS_ALL_LLVM_COMPONENTS=1
-fi
-
 if [ "$ENABLE_GCC_CODEGEN" = "1" ]; then
   # If `ENABLE_GCC_CODEGEN` is set and not empty, we add the `--enable-new-symbol-mangling`
   # argument to `RUST_CONFIGURE_ARGS` and set the `GCC_EXEC_PREFIX` environment variable.

src/tools/tidy/src/target_specific_tests.rs

@@ -15,6 +15,7 @@ const KNOWN_LLVM_COMPONENTS: &[&str] = &[
     "arm",
     "avr",
     "bpf",
+    "csky",
     "hexagon",
     "loongarch",
     "m68k",

tests/ui/abi/compatibility.rs

@@ -52,18 +52,16 @@
 //@ revisions: m68k
 //@[m68k] compile-flags: --target m68k-unknown-linux-gnu
 //@[m68k] needs-llvm-components: m68k
+//@ revisions: csky
+//@[csky] compile-flags: --target csky-unknown-linux-gnuabiv2
+//@[csky] needs-llvm-components: csky
+
 // FIXME: disabled on nvptx64 since the target ABI fails the sanity check
 // see https://github.com/rust-lang/rust/issues/117480
 /* revisions: nvptx64
   [nvptx64] compile-flags: --target nvptx64-nvidia-cuda
   [nvptx64] needs-llvm-components: nvptx
 */
-// FIXME: disabled since it fails on CI saying the csky component is missing
-// see https://github.com/rust-lang/rust/issues/125697
-/* revisions: csky
-  [csky] compile-flags: --target csky-unknown-linux-gnuabiv2
-  [csky] needs-llvm-components: csky
-*/
 #![feature(rustc_attrs, unsized_fn_params, transparent_unions)]
 #![cfg_attr(not(host), feature(no_core, lang_items), no_std, no_core)]
 #![allow(unused, improper_ctypes_definitions, internal_features)]
@@ -75,8 +73,7 @@
 
 #[cfg(host)]
 use std::{
-    any::Any, marker::PhantomData, mem::ManuallyDrop, num::NonZero, ptr::NonNull, rc::Rc,
-    sync::Arc,
+    any::Any, marker::PhantomData, mem::ManuallyDrop, num::NonZero, ptr::NonNull, rc::Rc, sync::Arc,
 };
 
 /// To work cross-target this test must be no_core.