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small optimization for boolean constants + new format for SETLIST opcode

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This commit is contained in:
Roberto Ierusalimschy
2004-10-04 16:01:53 -03:00
parent 5d834bdf57
commit 5ee87acd6b
6 changed files with 50 additions and 29 deletions
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13
lopcodes.h
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@@ -1,5 +1,5 @@
/*
** $Id: lopcodes.h,v 1.110 2004/06/29 18:49:02 roberto Exp roberto $
** $Id: lopcodes.h,v 1.111 2004/08/04 20:18:13 roberto Exp $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
@@ -198,8 +198,7 @@ OP_TFORLOOP,/* A C R(A+2), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2));
OP_TFORPREP,/* A sBx if type(R(A)) == table then R(A+1):=R(A), R(A):=next;
pc+=sBx */
OP_SETLIST,/* A Bx R(A)[Bx-Bx%FPF+i] := R(A+i), 1 <= i <= Bx%FPF+1 */
OP_SETLISTO,/* A Bx */
OP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */
OP_CLOSE,/* A close all variables in the stack up to (>=) R(A)*/
OP_CLOSURE,/* A Bx R(A) := closure(KPROTO[Bx], R(A), ... ,R(A+n)) */
@@ -219,11 +218,15 @@ OP_VARARG/* A B R(A), R(A+1), ..., R(A+B-1) = vararg */
next open instruction (OP_CALL, OP_RETURN, OP_SETLIST) may use `top'.
(*) In OP_VARARG, if (B == 0) then use actual number of varargs and
set top (like in OP_CALL).
set top (like in OP_CALL with C == 0).
(*) In OP_RETURN, if (B == 0) then return up to `top'
(*) For comparisons, B specifies what conditions the test should accept.
(*) In OP_SETLIST, if (B == 0) then B = `top';
if (C == 0) then next `instruction' is real C
(*) For comparisons, A specifies what condition the test should accept
(true or false).
(*) All `skips' (pc++) assume that next instruction is a jump
===========================================================================*/