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@ -637,7 +637,7 @@ namespace randomx {
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int cycle1 = scheduleUop<false>(mop.getUop1(), portBusy, cycle);
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int cycle2 = scheduleUop<false>(mop.getUop2(), portBusy, cycle);
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if (cycle1 == cycle2) {
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if (cycle1 >= 0 && cycle1 == cycle2) {
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if (commit) {
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scheduleUop<true>(mop.getUop1(), portBusy, cycle1);
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scheduleUop<true>(mop.getUop2(), portBusy, cycle2);
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@ -761,6 +761,12 @@ namespace randomx {
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//recalculate when the instruction can be scheduled for execution based on operand availability
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scheduleCycle = scheduleMop<true>(mop, portBusy, scheduleCycle, scheduleCycle);
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if (scheduleCycle < 0) {
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if (trace) std::cout << "Unable to map operation '" << mop.getName() << "' to execution port (cycle " << scheduleCycle << ")" << std::endl;
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portsSaturated = true;
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break;
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}
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//calculate when the result will be ready
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depCycle = scheduleCycle + mop.getLatency();
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