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-rw-r--r--all.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/all.h b/all.h
index f24d099..1e9476d 100644
--- a/all.h
+++ b/all.h
@@ -288,8 +288,9 @@ struct Tmp {
 	short slot; /* -1 for unset */
 	short cls;
 	struct {
-		int r;
-		bits m;
+		int r;  /* register or -1 */
+		int w;  /* weight */
+		bits m; /* avoid these registers */
 	} hint;
 	int phi;
 	Alias alias;