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

[rustc.git] / src / tools / rustfmt / tests / target / cfg_if / detect / os / freebsd / powerpc.rs

diff --git a/src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/powerpc.rs b/src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/powerpc.rs
new file mode 100644 (file)
index 0000000..203e5cd
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/cfg_if/detect/os/freebsd/powerpc.rs
@@ -0,0 +1,27 @@
+//! Run-time feature detection for PowerPC on FreeBSD.
+
+use super::auxvec;
+use crate::detect::{cache, Feature};
+
+/// Performs run-time feature detection.
+#[inline]
+pub fn check_for(x: Feature) -> bool {
+    cache::test(x as u32, detect_features)
+}
+
+fn detect_features() -> cache::Initializer {
+    let mut value = cache::Initializer::default();
+    let enable_feature = |value: &mut cache::Initializer, f, enable| {
+        if enable {
+            value.set(f as u32);
+        }
+    };
+
+    if let Ok(auxv) = auxvec::auxv() {
+        enable_feature(&mut value, Feature::altivec, auxv.hwcap & 0x10000000 != 0);
+        enable_feature(&mut value, Feature::vsx, auxv.hwcap & 0x00000080 != 0);
+        enable_feature(&mut value, Feature::power8, auxv.hwcap2 & 0x80000000 != 0);
+        return value;
+    }
+    value
+}