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Code Issues

lua: remove an unnecessary check and replace switch (GET_OPCODE(i)) as well (thx, lars)

Browse Source 
SVN-Revision: 12381
This commit is contained in:
Felix Fietkau 2008-08-24 14:28:04 +00:00
parent d58dd061fe
commit e219aaf034
1 changed files with 20 additions and 20 deletions
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40
package/lua/patches/300-opcode_performance.patch
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@ -10,15 +10,13 @@
/*
* If 'obj' is a string, it is tried to be interpreted as a number.
@@ -562,12 +565,65 @@
@@ -562,12 +565,63 @@
ARITH_OP1_END
#endif
+#ifdef COMPUTED_GOTO
+#define OPCODE_TARGET(op) DO_OP_##op:
+#define CALL_OPCODE(op) \
+ if ((op < sizeof(opcodes) / sizeof(opcodes[0])) && opcodes[op]) \
+ goto *opcodes[op];
+#define CALL_OPCODE(op) goto *opcodes[op];
+#define OPCODE_PTR(op) [OP_##op] = &&DO_OP_##op
+#else
+#define OPCODE_TARGET(op) case OP_##op:
@ -76,11 +74,13 @@
reentry: /* entry point */
lua_assert(isLua(L->ci));
pc = L->savedpc;
@@ -593,32 +649,32 @@
@@ -592,33 +646,33 @@
lua_assert(base == L->base && L->base == L->ci->base);
lua_assert(base <= L->top && L->top <= L->stack + L->stacksize);
lua_assert(L->top == L->ci->top || luaG_checkopenop(i));
switch (GET_OPCODE(i)) {
- switch (GET_OPCODE(i)) {
- case OP_MOVE: {
+ CALL_OPCODE(GET_OPCODE(i)) {
+ OPCODE_TARGET(MOVE) {
setobjs2s(L, ra, RB(i));
continue;
@ -115,7 +115,7 @@
TValue g;
TValue *rb = KBx(i);
sethvalue(L, &g, cl->env);
@@ -626,88 +682,88 @@
@@ -626,88 +680,88 @@
Protect(luaV_gettable(L, &g, rb, ra));
continue;
}
@ -219,7 +219,7 @@
const TValue *rb = RB(i);
switch (ttype(rb)) {
case LUA_TTABLE: {
@@ -727,18 +783,18 @@
@@ -727,18 +781,18 @@
}
continue;
}
@ -241,7 +241,7 @@
TValue *rb = RKB(i);
TValue *rc = RKC(i);
Protect(
@@ -748,7 +804,7 @@
@@ -748,7 +802,7 @@
pc++;
continue;
}
@ -250,7 +250,7 @@
Protect(
if (luaV_lessthan(L, RKB(i), RKC(i)) == GETARG_A(i))
dojump(L, pc, GETARG_sBx(*pc));
@@ -756,7 +812,7 @@
@@ -756,7 +810,7 @@
pc++;
continue;
}
@ -259,7 +259,7 @@
Protect(
if (lessequal(L, RKB(i), RKC(i)) == GETARG_A(i))
dojump(L, pc, GETARG_sBx(*pc));
@@ -764,13 +820,13 @@
@@ -764,13 +818,13 @@
pc++;
continue;
}
@ -275,7 +275,7 @@
TValue *rb = RB(i);
if (l_isfalse(rb) != GETARG_C(i)) {
setobjs2s(L, ra, rb);
@@ -779,7 +835,7 @@
@@ -779,7 +833,7 @@
pc++;
continue;
}
@ -284,7 +284,7 @@
int b = GETARG_B(i);
int nresults = GETARG_C(i) - 1;
if (b != 0) L->top = ra+b; /* else previous instruction set top */
@@ -800,7 +856,7 @@
@@ -800,7 +854,7 @@
}
}
}
@ -293,7 +293,7 @@
int b = GETARG_B(i);
if (b != 0) L->top = ra+b; /* else previous instruction set top */
L->savedpc = pc;
@@ -832,7 +888,7 @@
@@ -832,7 +886,7 @@
}
}
}
@ -302,7 +302,7 @@
int b = GETARG_B(i);
if (b != 0) L->top = ra+b-1;
if (L->openupval) luaF_close(L, base);
@@ -847,7 +903,7 @@
@@ -847,7 +901,7 @@
goto reentry;
}
}
@ -311,7 +311,7 @@
/* If start,step and limit are all integers, we don't need to check
* against overflow in the looping.
*/
@@ -875,7 +931,7 @@
@@ -875,7 +929,7 @@
}
continue;
}
@ -320,7 +320,7 @@
const TValue *init = ra;
const TValue *plimit = ra+1;
const TValue *pstep = ra+2;
@@ -898,7 +954,7 @@
@@ -898,7 +952,7 @@
dojump(L, pc, GETARG_sBx(i));
continue;
}
@ -329,7 +329,7 @@
StkId cb = ra + 3; /* call base */
setobjs2s(L, cb+2, ra+2);
setobjs2s(L, cb+1, ra+1);
@@ -914,7 +970,7 @@
@@ -914,7 +968,7 @@
pc++;
continue;
}
@ -338,7 +338,7 @@
int n = GETARG_B(i);
int c = GETARG_C(i);
int last;
@@ -936,11 +992,11 @@
@@ -936,11 +990,11 @@
}
continue;
}
@ -352,7 +352,7 @@
Proto *p;
Closure *ncl;
int nup, j;
@@ -960,7 +1016,7 @@
@@ -960,7 +1014,7 @@
Protect(luaC_checkGC(L));
continue;
}