sanitizer: Fix scs-attr check test

This test was not actually being run before - it only runs on targets
with SCS enabled, which is limited to `aarch64-linux-android` at the
moment. This means that the test has been sitting broken and needs to be
fixed before we can enable `aarch64-linux-android` in testing.

* Rename CHECK function names to match current crate name
* Disable optimization to prevent the functions from being made MIR-only

tests/codegen/sanitizer/scs-attr-check.rs

@@ -3,15 +3,17 @@
 //
 //@ needs-sanitizer-shadow-call-stack
 //@ compile-flags: -Zsanitizer=shadow-call-stack
+// With optimization, Rust may decide to make these functions MIR-only.
+//@ compile-flags: -C opt-level=0
 
 #![crate_type = "lib"]
 #![feature(no_sanitize)]
 
-// CHECK: ; sanitizer_scs_attr_check::scs
+// CHECK: ; scs_attr_check::scs
 // CHECK-NEXT: ; Function Attrs:{{.*}}shadowcallstack
 pub fn scs() {}
 
-// CHECK: ; sanitizer_scs_attr_check::no_scs
+// CHECK: ; scs_attr_check::no_scs
 // CHECK-NOT: ; Function Attrs:{{.*}}shadowcallstack
 #[no_sanitize(shadow_call_stack)]
 pub fn no_scs() {}