Split PAuth target feature

src/test/ui/target-feature/tied-features-cli.one.stderr

@@ -0,0 +1,4 @@
+error: Target features paca, pacg must all be enabled or disabled together
+
+error: aborting due to previous error
+

src/test/ui/target-feature/tied-features-cli.rs

@@ -0,0 +1,9 @@
+// only-aarch64
+// revisions: one two three four
+//[one] compile-flags: -C target-feature=+paca
+//[two] compile-flags: -C target-feature=-pacg,+pacg
+//[three] compile-flags: -C target-feature=+paca,+pacg,-paca
+//[four] check-pass
+//[four] compile-flags: -C target-feature=-paca,+pacg -C target-feature=+paca
+
+fn main() {}

src/test/ui/target-feature/tied-features-cli.three.stderr

@@ -0,0 +1,4 @@
+error: Target features paca, pacg must all be enabled or disabled together
+
+error: aborting due to previous error
+

src/test/ui/target-feature/tied-features-cli.two.stderr

@@ -0,0 +1,4 @@
+error: Target features paca, pacg must all be enabled or disabled together
+
+error: aborting due to previous error
+

src/test/ui/target-feature/tied-features.rs

@@ -0,0 +1,29 @@
+// only-aarch64
+// build-fail
+
+#![feature(aarch64_target_feature, target_feature_11)]
+
+fn main() {
+    #[target_feature(enable = "pacg")]
+    //~^ ERROR must all be either enabled or disabled together
+    unsafe fn inner() {}
+
+    unsafe {
+        foo();
+        bar();
+        baz();
+        inner();
+    }
+}
+
+#[target_feature(enable = "paca")]
+//~^ ERROR must all be either enabled or disabled together
+unsafe fn foo() {}
+
+
+#[target_feature(enable = "paca,pacg")]
+unsafe fn bar() {}
+
+#[target_feature(enable = "paca")]
+#[target_feature(enable = "pacg")]
+unsafe fn baz() {}

src/test/ui/target-feature/tied-features.stderr

@@ -0,0 +1,18 @@
+error: the target features paca, pacg must all be either enabled or disabled together
+  --> $DIR/tied-features.rs:7:5
+   |
+LL |     #[target_feature(enable = "pacg")]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: add the missing features in a `target_feature` attribute
+
+error: the target features paca, pacg must all be either enabled or disabled together
+  --> $DIR/tied-features.rs:19:1
+   |
+LL | #[target_feature(enable = "paca")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: add the missing features in a `target_feature` attribute
+
+error: aborting due to 2 previous errors
+