Use no_core for KCFI tests to exercise them in CI

Author: tmiasko

tests/codegen/sanitizer/kcfi-add-kcfi-flag.rs

@@ -1,9 +1,20 @@
 // Verifies that "kcfi" module flag is added.
 //
-// needs-sanitizer-kcfi
+// revisions: aarch64 x86_64
+// [aarch64] compile-flags: --target aarch64-unknown-none
+// [aarch64] needs-llvm-components: aarch64
+// [x86_64] compile-flags: --target x86_64-unknown-none
+// [x86_64] needs-llvm-components: x86
 // compile-flags: -Ctarget-feature=-crt-static -Zsanitizer=kcfi
 
+#![feature(no_core, lang_items)]
 #![crate_type="lib"]
+#![no_core]
+
+#[lang="sized"]
+trait Sized { }
+#[lang="copy"]
+trait Copy { }
 
 pub fn foo() {
 }

tests/ui/sanitize/cfg.rs

@@ -1,23 +1,29 @@
 // Verifies that when compiling with -Zsanitizer=option,
 // the `#[cfg(sanitize = "option")]` attribute is configured.
 
-// needs-sanitizer-support
 // check-pass
 // revisions: address cfi kcfi leak memory thread
 //[address]needs-sanitizer-address
 //[address]compile-flags: -Zsanitizer=address --cfg address
 //[cfi]needs-sanitizer-cfi
 //[cfi]compile-flags:     -Zsanitizer=cfi     --cfg cfi -Clto
-//[kcfi]needs-sanitizer-kcfi
-//[kcfi]compile-flags:    -Zsanitizer=kcfi    --cfg kcfi
+//[kcfi]needs-llvm-components: x86
+//[kcfi]compile-flags:    -Zsanitizer=kcfi    --cfg kcfi --target x86_64-unknown-none
 //[leak]needs-sanitizer-leak
 //[leak]compile-flags:    -Zsanitizer=leak    --cfg leak
 //[memory]needs-sanitizer-memory
 //[memory]compile-flags:  -Zsanitizer=memory  --cfg memory
 //[thread]needs-sanitizer-thread
 //[thread]compile-flags:  -Zsanitizer=thread  --cfg thread
 
-#![feature(cfg_sanitize)]
+#![feature(cfg_sanitize, no_core, lang_items)]
+#![crate_type="lib"]
+#![no_core]
+
+#[lang="sized"]
+trait Sized { }
+#[lang="copy"]
+trait Copy { }
 
 #[cfg(all(sanitize = "address", address))]
 fn main() {}
@@ -36,3 +42,7 @@ fn main() {}
 
 #[cfg(all(sanitize = "thread", thread))]
 fn main() {}
+
+fn check() {
+    main();
+}