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Adapt bytecode patching/unpatching for hot calls.

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Mike Pall 2010-02-18 17:17:50 +01:00
parent 59f54be9d3
commit 65586ca4dc
1 changed files with 6 additions and 9 deletions
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15
src/lj_trace.c
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@ -149,7 +149,9 @@ void lj_trace_reenableproto(GCproto *pt)
BCIns *bc = proto_bc(pt);
BCPos i, sizebc = pt->sizebc;;
pt->flags &= ~PROTO_HAS_ILOOP;
for (i = 0; i < sizebc; i++) {
if (bc_op(bc[0]) == BC_IFUNCF)
setbc_op(&bc[0], BC_FUNCF);
for (i = 1; i < sizebc; i++) {
BCOp op = bc_op(bc[i]);
if (op == BC_IFORL || op == BC_IITERL || op == BC_ILOOP)
setbc_op(&bc[i], (int)op+(int)BC_LOOP-(int)BC_ILOOP);
@ -325,14 +327,9 @@ static void trace_start(jit_State *J)
if ((J->pt->flags & PROTO_NO_JIT)) { /* JIT disabled for this proto? */
if (J->parent == 0) {
if (J->pc >= proto_bc(J->pt)) {
/* Lazy bytecode patching to disable hotcount events. */
setbc_op(J->pc, (int)bc_op(*J->pc)+(int)BC_ILOOP-(int)BC_LOOP);
J->pt->flags |= PROTO_HAS_ILOOP;
} else {
/* NYI: lazy closure patching to disable hotcall events. */
lua_assert(0);
}
/* Lazy bytecode patching to disable hotcount events. */
setbc_op(J->pc, (int)bc_op(*J->pc)+(int)BC_ILOOP-(int)BC_LOOP);
J->pt->flags |= PROTO_HAS_ILOOP;
}
J->state = LJ_TRACE_IDLE; /* Silently ignored. */
return;