diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs
index bde59e9d679e7..cba6fc61c5a25 100644
--- a/src/tools/compiletest/src/header.rs
+++ b/src/tools/compiletest/src/header.rs
@@ -673,6 +673,7 @@ pub fn line_directive<'line>(
 /// This is generated by collecting directives from ui tests and then extracting their directive
 /// names. This is **not** an exhaustive list of all possible directives. Instead, this is a
 /// best-effort approximation for diagnostics.
+// tidy-alphabetical-start
 const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "assembly-output",
     "aux-build",
@@ -724,9 +725,11 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-lldb",
     "ignore-llvm-version",
     "ignore-loongarch64",
+    "ignore-macabi",
     "ignore-macos",
     "ignore-mode-coverage-map",
     "ignore-mode-coverage-run",
+    "ignore-mode-run-pass-valgrind",
     "ignore-msp430",
     "ignore-msvc",
     "ignore-musl",
@@ -743,18 +746,24 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-spirv",
     "ignore-stable",
     "ignore-stage1",
+    "ignore-stage2",
     "ignore-test",
     "ignore-thumbv8m.base-none-eabi",
     "ignore-thumbv8m.main-none-eabi",
+    "ignore-unix",
+    "ingore-unknown",
     "ignore-uwp",
     "ignore-vxworks",
     "ignore-wasm",
     "ignore-wasm32",
     "ignore-wasm32-bare",
+    "ignore-wasm64",
     "ignore-windows",
     "ignore-windows-gnu",
     "ignore-x86",
+    "ignore-x86_64",
     "ignore-x86_64-apple-darwin",
+    "ignore-x86_64-unknown-linux-gnu",
     "incremental",
     "known-bug",
     "llvm-cov-flags",
@@ -762,9 +771,11 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "min-gdb-version",
     "min-lldb-version",
     "min-llvm-version",
+    "min-system-llvm-version",
     "needs-asm-support",
     "needs-dlltool",
     "needs-dynamic-linking",
+    "needs-git-hash",
     "needs-llvm-components",
     "needs-profiler-support",
     "needs-relocation-model-pic",
@@ -810,6 +821,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "only-riscv64",
     "only-sparc",
     "only-sparc64",
+    "only-stable",
     "only-thumb",
     "only-wasm32",
     "only-wasm32-bare",
@@ -817,6 +829,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "only-x86",
     "only-x86_64",
     "only-x86_64-fortanix-unknown-sgx",
+    "only-x86_64-pc-windows-gnu",
     "only-x86_64-pc-windows-msvc",
     "only-x86_64-unknown-linux-gnu",
     "pp-exact",
@@ -839,6 +852,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "unset-exec-env",
     "unset-rustc-env",
 ];
+// tidy-alphabetical-end
 
 /// The broken-down contents of a line containing a test header directive,
 /// which [`iter_header`] passes to its callback function.