From e219aaf034cc47ec3abecbd077fb2b8a58731077 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 24 Aug 2008 14:28:04 +0000
Subject: [PATCH] lua: remove an unnecessary check and replace switch
 (GET_OPCODE(i)) as well (thx, lars)

SVN-Revision: 12381
---
 .../lua/patches/300-opcode_performance.patch  | 40 +++++++++----------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/package/lua/patches/300-opcode_performance.patch b/package/lua/patches/300-opcode_performance.patch
index dbc89a8ed0..f6204ae19b 100644
--- a/package/lua/patches/300-opcode_performance.patch
+++ b/package/lua/patches/300-opcode_performance.patch
@@ -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;
        }