Normalize target-cpus.rs stdout test for LLVM changes

Author: TimNN

src/tools/compiletest/src/directive-list.rs

@@ -163,6 +163,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "normalize-stderr-32bit",
     "normalize-stderr-64bit",
     "normalize-stderr-test",
+    "normalize-stdout",
     "normalize-stdout-test",
     "only-16bit",
     "only-32bit",

tests/ui/codegen/target-cpus.rs

@@ -1,3 +1,9 @@
 //@ needs-llvm-components: webassembly
 //@ compile-flags: --print=target-cpus --target=wasm32-unknown-unknown
 //@ check-pass
+
+// LLVM at HEAD has added support for the `lime1` CPU. Remove it from the
+// output so that the stdout with LLVM-at-HEAD matches the output of the LLVM
+// versions currently used by default.
+// FIXME: Once Rust upgrades to LLVM 20, remove this.
+//@ normalize-stdout-test: "(?m)^ *lime1\n" -> ""