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Allow hole-filling JSOP_SETELEM to remain on trace.

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shaver@mozilla.org 2008-07-05 21:50:54 -04:00
parent 04ae2a44d4
commit 1c4f82c592
1 changed files with 5 additions and 4 deletions
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9
js/src/jstracer.cpp
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@ -1226,11 +1226,12 @@ bool TraceRecorder::JSOP_SETELEM()
/* get us the address of the array slot */
LIns* addr = lir->ins2(LIR_add, dslots_ins,
lir->ins2i(LIR_lsh, idx_ins, sizeof(jsval) == 4 ? 2 : 3));
/* if the current value is a hole, abort */
if (obj->dslots[idx] == JSVAL_HOLE)
return false;
LIns* oldval = lir->insLoad(LIR_ld, addr, 0);
guard(false, lir->ins2(LIR_eq, oldval, lir->insImmPtr((void*)JSVAL_HOLE)));
LIns* isHole = lir->ins2(LIR_eq, oldval, lir->insImmPtr((void*)JSVAL_HOLE));
LIns* count = lir->insLoadi(obj_ins,
offsetof(JSObject, fslots[JSSLOT_ARRAY_COUNT]));
lir->insStorei(lir->ins2(LIR_add, count, isHole), obj_ins,
offsetof(JSObject, fslots[JSSLOT_ARRAY_COUNT]));
/* ok, box the value we are storing, store it and we are done */
LIns* v_ins = get(&v);
if (isInt(v))