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| author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2011-04-19 13:22:13 -0300 |
|---|---|---|
| committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2011-04-19 13:22:13 -0300 |
| commit | 4758113043b6c362a0fdce77715c711332d909dc (patch) | |
| tree | deea8a795161332bb1579f201f8a7eb5e4b102b9 /lvm.c | |
| parent | a4e644add264b6bac3171a03aa6febcf61e89ae6 (diff) | |
| download | lua-4758113043b6c362a0fdce77715c711332d909dc.tar.gz lua-4758113043b6c362a0fdce77715c711332d909dc.tar.bz2 lua-4758113043b6c362a0fdce77715c711332d909dc.zip | |
change in opcode OP_LOADNIL: B is used as a counter instead of a
register. (Avoids an assignment to R(B), not present in any other
instruction.)
Diffstat (limited to 'lvm.c')
| -rw-r--r-- | lvm.c | 8 |
1 files changed, 4 insertions, 4 deletions
| @@ -1,5 +1,5 @@ | |||
| 1 | /* | 1 | /* |
| 2 | ** $Id: lvm.c,v 2.134 2011/04/07 18:14:12 roberto Exp roberto $ | 2 | ** $Id: lvm.c,v 2.135 2011/04/18 19:48:53 roberto Exp roberto $ |
| 3 | ** Lua virtual machine | 3 | ** Lua virtual machine |
| 4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
| 5 | */ | 5 | */ |
| @@ -541,10 +541,10 @@ void luaV_execute (lua_State *L) { | |||
| 541 | if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */ | 541 | if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */ |
| 542 | ) | 542 | ) |
| 543 | vmcase(OP_LOADNIL, | 543 | vmcase(OP_LOADNIL, |
| 544 | TValue *rb = RB(i); | 544 | int b = GETARG_B(i); |
| 545 | do { | 545 | do { |
| 546 | setnilvalue(rb--); | 546 | setnilvalue(ra++); |
| 547 | } while (rb >= ra); | 547 | } while (b--); |
| 548 | ) | 548 | ) |
| 549 | vmcase(OP_GETUPVAL, | 549 | vmcase(OP_GETUPVAL, |
| 550 | int b = GETARG_B(i); | 550 | int b = GETARG_B(i); |