Auto merge of #64534 - gnzlbg:uarch, r=<try>

Fix accidental stabilization in feature-detection macros

This commit updates stdarch and fix the accidental stabilization
of unstable target-features in the stable is_x86_feature_detected
macros.

For example, the "mmx" feature is unstable, but
is_x86_feature_detected!("mmx") works on stable Rust.

Author: bors

src/libstd/tests/run-time-detect.rs

@@ -1,14 +1,6 @@
 //! These tests just check that the macros are available in libstd.
 
-#![cfg_attr(
-    any(
-        all(target_arch = "arm", any(target_os = "linux", target_os = "android")),
-        all(target_arch = "aarch64", any(target_os = "linux", target_os = "android")),
-        all(target_arch = "powerpc", target_os = "linux"),
-        all(target_arch = "powerpc64", target_os = "linux"),
-    ),
-    feature(stdsimd)
-)]
+#![feature(stdsimd)]
 
 #[test]
 #[cfg(all(target_arch = "arm",

src/stdarch

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("asimd");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-asimd.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("crc");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-crc.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("crypto");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-crypto.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("dotprod");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-dotprod.rs

@@ -0,0 +1,12 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    // test for unknown features
+    is_aarch64_feature_detected!("foobar");
+    //~^ ERROR use of unstable library feature
+}
+
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-error.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("fp");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-fp.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("fp16");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-fp16.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("lse");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-lse.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("ras");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-ras.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("rcpc");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-rcpc.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("rdm");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-rdm.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("sve");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-sve.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("v8.1a");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-v81a.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("v8.2a");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-v82a.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("v8.3a");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detected-v83a.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("neon");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detection-neon.rs

@@ -0,0 +1,10 @@
+// only-aarch64
+
+#[cfg(target_arch = "aarch64")]
+fn main() {
+    is_aarch64_feature_detected!("pmull");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "aarch64"))]
+fn main() {}

src/test/ui/stdarch/is_aarch64_feature_detection-pmull.rs

@@ -0,0 +1,12 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    // test for unknown features
+    is_arm_feature_detected!("foobar");
+    //~^ ERROR use of unstable library feature
+}
+
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-error.rs

@@ -0,0 +1,10 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    is_arm_feature_detected!("neon");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-neon.rs

@@ -0,0 +1,10 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    is_arm_feature_detected!("pmull");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-pmull.rs

@@ -0,0 +1,10 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    is_arm_feature_detected!("v7");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-v7.rs

@@ -0,0 +1,10 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    is_arm_feature_detected!("vfp2");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-vfp2.rs

@@ -0,0 +1,10 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    is_arm_feature_detected!("vfp3");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-vfp3.rs

@@ -0,0 +1,10 @@
+// only-arm
+
+#[cfg(target_arch = "arm")]
+fn main() {
+    is_arm_feature_detected!("vfp4");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "arm"))]
+fn main() {}

src/test/ui/stdarch/is_arm_feature_detected-vfp4.rs

@@ -0,0 +1,12 @@
+// only-mips64
+
+#[cfg(target_arch = "mips64")]
+fn main() {
+    // test for unknown features
+    is_mips64_feature_detected!("foobar");
+    //~^ ERROR use of unstable library feature
+}
+
+
+#[cfg(not(target_arch = "mips64"))]
+fn main() {}

src/test/ui/stdarch/is_mips64_feature_detected-error.rs

@@ -0,0 +1,10 @@
+// only-mips64
+
+#[cfg(target_arch = "mips64")]
+fn main() {
+    is_mips_feature_detected!("msa");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "mips64"))]
+fn main() {}

src/test/ui/stdarch/is_mips64_feature_detected-msa.rs

@@ -0,0 +1,12 @@
+// only-mips
+
+#[cfg(target_arch = "mips")]
+fn main() {
+    // test for unknown features
+    is_mips_feature_detected!("foobar");
+    //~^ ERROR use of unstable library feature
+}
+
+
+#[cfg(not(target_arch = "mips"))]
+fn main() {}

src/test/ui/stdarch/is_mips_feature_detected-error.rs

@@ -0,0 +1,10 @@
+// only-mips
+
+#[cfg(target_arch = "mips")]
+fn main() {
+    is_mips_feature_detected!("msa");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "mips"))]
+fn main() {}

src/test/ui/stdarch/is_mips_feature_detected-msa.rs

@@ -0,0 +1,10 @@
+// only-powerpc64|powerpc64le
+
+#[cfg(target_arch = "powerpc64")]
+fn main() {
+    is_powerpc64_feature_detected!("altivec");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "powerpc64"))]
+fn main() {}

src/test/ui/stdarch/is_powerpc64_feature_detected-altivec.rs

@@ -0,0 +1,11 @@
+// only-powerpc64|powerpc64le
+
+#[cfg(any(target_arch = "powerpc64", target_arch = "powerpc64le"))]
+fn main() {
+    // test for unknown features
+    is_powerpc64_feature_detected!("foobar");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(any(target_arch = "powerpc64", target_arch = "powerpc64le"))]
+fn main() {}

src/test/ui/stdarch/is_powerpc64_feature_detected-error.rs

@@ -0,0 +1,10 @@
+// only-powerpc64|powerpc64le
+
+#[cfg(target_arch = "powerpc64")]
+fn main() {
+    is_powerpc64_feature_detected!("power8");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "powerpc64"))]
+fn main() {}

src/test/ui/stdarch/is_powerpc64_feature_detected-power8.rs

@@ -0,0 +1,10 @@
+// only-powerpc64|powerpc64le
+
+#[cfg(target_arch = "powerpc64")]
+fn main() {
+    is_powerpc64_feature_detected!("vsx");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "powerpc64"))]
+fn main() {}

src/test/ui/stdarch/is_powerpc64_feature_detected-vsx.rs

@@ -0,0 +1,10 @@
+// only-powerpc
+
+#[cfg(target_arch = "powerpc")]
+fn main() {
+    is_powerpc_feature_detected!("altivec");
+    //~^ ERROR use of unstable library feature
+}
+
+#[cfg(not(target_arch = "powerpc"))]
+fn main() {}