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Turn loads from immutable upvalues into constants.

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This commit is contained in:
Mike Pall
2012-07-20 18:54:52 +02:00
parent 834ff6d36d
commit 3636a720a5
6 changed files with 72 additions and 24 deletions
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12
src/lj_crecord.c
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@@ -483,16 +483,8 @@ static void crec_index_meta(jit_State *J, CTState *cts, CType *ct,
} else if (rd->data == 0 && tvistab(tv) && tref_isstr(J->base[1])) {
/* Specialize to result of __index lookup. */
cTValue *o = lj_tab_get(J->L, tabV(tv), &rd->argv[1]);
IRType t = itype2irt(o);
if (tvisgcv(o))
J->base[0] = lj_ir_kgc(J, gcV(o), t);
else if (tvisint(o))
J->base[0] = lj_ir_kint(J, intV(o));
else if (tvisnum(o))
J->base[0] = lj_ir_knumint(J, numV(o));
else if (tvisbool(o))
J->base[0] = TREF_PRI(t);
else
J->base[0] = lj_record_constify(J, o);
if (!J->base[0])
lj_trace_err(J, LJ_TRERR_BADTYPE);
/* Always specialize to the key. */
emitir(IRTG(IR_EQ, IRT_STR), J->base[1], lj_ir_kstr(J, strV(&rd->argv[1])));