Optimizations for line hook

The function 'changedline' tries harder to avoid calling
'luaG_getfuncline' plus small changes in the use of 'L->oldpc'.

1 files changed, 10 insertions, 0 deletions

diff --git a/ldebug.h b/ldebug.h
index 55b3ae09..8e912a8e 100644
--- a/ldebug.h
+++ b/ldebug.h
@@ -26,6 +26,16 @@
 */
 #define ABSLINEINFO     (-0x80)
 
+
+/*
+** MAXimum number of successive Instructions WiTHout ABSolute line
+** information.
+*/
+#if !defined(MAXIWTHABS)
+#define MAXIWTHABS      120
+#endif
+
+
 LUAI_FUNC int luaG_getfuncline (const Proto *f, int pc);
 LUAI_FUNC const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n,
                                                     StkId *pos);