vararg back to '...' (but with another implementation)

new implementation should have zero overhead for non-vararg functions

1 files changed, 6 insertions, 4 deletions

diff --git a/lopcodes.h b/lopcodes.h
index 47c72c69..3c7a9573 100644
--- a/lopcodes.h
+++ b/lopcodes.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lopcodes.h,v 1.184 2018/01/28 15:13:26 roberto Exp roberto $
+** $Id: lopcodes.h,v 1.186 2018/02/07 15:18:04 roberto Exp roberto $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -268,6 +268,7 @@ OP_CALL,/*	A B C	R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
 OP_TAILCALL,/*  A B C   return R(A)(R(A+1), ... ,R(A+B-1))              */
 
 OP_RETURN,/*    A B     return R(A), ... ,R(A+B-2)      (see note)      */
+OP_RETVARARG,/* A B     return R(A), ... ,R(A+B-2)      (see note)      */
 OP_RETURN0,/*           return                                          */
 OP_RETURN1,/*   A       return R(A)                                     */
 
@@ -286,7 +287,7 @@ OP_SETLIST,/*	A B C	R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B	*/
 
 OP_CLOSURE,/*   A Bx    R(A) := closure(KPROTO[Bx])                     */
 
-OP_VARARG,/*    A B C   R(A), R(A+1), ..., R(A+C-2) = vararg(B)         */
+OP_VARARG,/*    A B C   R(A), R(A+1), ..., R(A+C-2) = vararg            */
 
 OP_PREPVARARG,/*A       (adjust vararg parameters)                      */
 
@@ -305,9 +306,10 @@ OP_EXTRAARG/*	Ax	extra (larger) argument for previous opcode	*/
   OP_SETLIST) may use 'top'.
 
   (*) In OP_VARARG, if (C == 0) then use actual number of varargs and
-  set top (like in OP_CALL with C == 0). B is the vararg parameter.
+  set top (like in OP_CALL with C == 0).
 
-  (*) In OP_RETURN, if (B == 0) then return up to 'top'.
+  (*) In OP_RETURN/OP_RETVARARG, if (B == 0) then return up to 'top'.
+  (OP_RETVARARG is the return instruction for vararg functions.)
 
   (*) In OP_SETLIST, if (B == 0) then real B = 'top'; if (C == 0) then
   next 'instruction' is EXTRAARG(real C).