Update upstream source from tag 'upstream/1.52.1+dfsg1'

[rustc.git] / src / tools / rustfmt / tests / target / cfg_if / detect / arch / mips.rs

diff --git a/src/tools/rustfmt/tests/target/cfg_if/detect/arch/mips.rs b/src/tools/rustfmt/tests/target/cfg_if/detect/arch/mips.rs
new file mode 100644 (file)
index 0000000..2397a09
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/cfg_if/detect/arch/mips.rs
@@ -0,0 +1,30 @@
+//! Run-time feature detection on MIPS.
+
+/// Checks if `mips` feature is enabled.
+#[macro_export]
+#[unstable(feature = "stdsimd", issue = "27731")]
+#[allow_internal_unstable(stdsimd_internal, stdsimd)]
+macro_rules! is_mips_feature_detected {
+    ("msa") => {
+        cfg!(target_feature = "msa") || $crate::detect::check_for($crate::detect::Feature::msa)
+    };
+    ($t:tt,) => {
+        is_mips_feature_detected!($t);
+    };
+    ($t:tt) => {
+        compile_error!(concat!("unknown mips target feature: ", $t))
+    };
+}
+
+/// MIPS CPU Feature enum. Each variant denotes a position in a bitset for a
+/// particular feature.
+///
+/// PLEASE: do not use this, it is an implementation detail subject to change.
+#[doc(hidden)]
+#[allow(non_camel_case_types)]
+#[repr(u8)]
+#[unstable(feature = "stdsimd_internal", issue = "0")]
+pub enum Feature {
+    /// MIPS SIMD Architecture (MSA)
+    msa,
+}