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Update trace recorder infrastructure for hot calls.

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This commit is contained in:
Mike Pall
2010-02-18 03:43:09 +01:00
parent 2f300fb66a
commit 59f54be9d3
3 changed files with 17 additions and 15 deletions
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10
src/lj_trace.c
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@@ -163,6 +163,7 @@ static void trace_unpatch(jit_State *J, Trace *T)
BCOp op = bc_op(T->startins);
MSize pcofs = T->snap[0].mapofs + T->snap[0].nent;
BCIns *pc = ((BCIns *)snap_pc(T->snapmap[pcofs])) - 1;
UNUSED(J);
switch (op) {
case BC_FORL:
lua_assert(bc_op(*pc) == BC_JFORI);
@@ -181,8 +182,9 @@ static void trace_unpatch(jit_State *J, Trace *T)
lua_assert(bc_op(*pc) == BC_JITERL && J->trace[bc_d(*pc)] == T);
*pc = T->startins;
break;
case BC_CALL:
lj_trace_err(J, LJ_TRERR_NYILNKF);
case BC_FUNCF:
lua_assert(bc_op(*pc) == BC_JFUNCF && J->trace[bc_d(*pc)] == T);
*pc = T->startins;
break;
case BC_JMP: /* No need to unpatch branches in parent traces (yet). */
default:
@@ -384,6 +386,7 @@ static void trace_stop(jit_State *J)
/* fallthrough */
case BC_LOOP:
case BC_ITERL:
case BC_FUNCF:
/* Patch bytecode of starting instruction in root trace. */
setbc_op(pc, (int)op+(int)BC_JLOOP-(int)BC_LOOP);
setbc_d(pc, J->curtrace);
@@ -391,9 +394,6 @@ static void trace_stop(jit_State *J)
J->cur.nextroot = pt->trace;
pt->trace = (TraceNo1)J->curtrace;
break;
case BC_CALL:
lj_trace_err(J, LJ_TRERR_NYILNKF);
break;
case BC_JMP:
/* Patch exit branch in parent to side trace entry. */
lua_assert(J->parent != 0 && J->cur.root != 0);