1 files changed, 19 insertions, 0 deletions
diff --git a/compiler/rustc_query_system/src/ich/mod.rs b/compiler/rustc_query_system/src/ich/mod.rs
new file mode 100644
index 000000000..0a1c350b2
--- /dev/null
+++ b/compiler/rustc_query_system/src/ich/mod.rs
@@ -0,0 +1,19 @@
+//! ICH - Incremental Compilation Hash
+
+pub use self::hcx::StableHashingContext;
+use rustc_span::symbol::{sym, Symbol};
+
+mod hcx;
+mod impls_hir;
+mod impls_syntax;
+
+pub const IGNORED_ATTRIBUTES: &[Symbol] = &[
+    sym::cfg,
+    sym::rustc_if_this_changed,
+    sym::rustc_then_this_would_need,
+    sym::rustc_dirty,
+    sym::rustc_clean,
+    sym::rustc_partition_reused,
+    sym::rustc_partition_codegened,
+    sym::rustc_expected_cgu_reuse,
+];