Add a comment about stack checks

ifesdjeen · Nov 5, 2014 · 081ef2f · 081ef2f
1 parent e6b3829
commit 081ef2f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/rts/StgMiscClosures.cmm b/rts/StgMiscClosures.cmm
@@ -199,6 +199,8 @@ INFO_TABLE_FUN( stg_BCO, 4, 0, BCO, "BCO", "BCO", ARG_BCO )
 {
   /* entering a BCO means "apply it", same as a function */
   Sp_adj(-2);
+  // Skip the stack check; the interpreter will do one before using
+  // the stack anyway.
   Sp(1) = R1;
   Sp(0) = stg_apply_interp_info;
   jump stg_yield_to_interpreter [];