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Improve bytecode generation.

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This commit is contained in:
James Roseborough
2010-08-02 18:28:40 +00:00
parent ddd0385f65
commit b20d7a2213
2 changed files with 18 additions and 3 deletions
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10
src/jse/org/luaj/vm2/luajc/Slots.java
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@@ -125,7 +125,7 @@ public class Slots {
case Lua.OP_LOADNIL: /* A B R(A):= ...:= R(B):= nil */
while ( a<=b )
s[a++] |= BIT_ASSIGN;
s[a++] |= BIT_ASSIGN | BIT_NIL;
break;
case Lua.OP_GETTABLE: /* A B C R(A):= R(B)[RK(C)] */
@@ -445,9 +445,13 @@ public class Slots {
}
private int prevUndefined(int index, int j) {
for ( ; index>=0; --index )
if ( ((slots[index][j] & BIT_INVALID) != 0) )
for ( ; index>=0; --index ) {
int s = slots[index][j];
if ( ((s & BIT_INVALID) != 0) )
return index;
else if ( ((s & BIT_NIL) != 0) )
return index-1;
}
return index;
}