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<p style="margin-top:0;margin-bottom:0">Hi,</p>
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<p style="margin-top:0;margin-bottom:0">I've been working on a number of Java program analysis/Java JIT compiler related work for sometime, but I still can't figure out a basic question. Why did Java choose to use stack machine based bytecode as its IR instead
of quad IR like Jimple? </p>
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<p style="margin-top:0;margin-bottom:0">For portability, I don't see how Jimple is less portable than bytecode. Maybe someone can shed more lights.</p>
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<p style="margin-top:0;margin-bottom:0">For interpretation simplicity, Jimple is also easy to interpret.</p>
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<p style="margin-top:0;margin-bottom:0">For interoperability, supporting dynamic features might be even easier in Jimple-like IRs.</p>
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<p style="margin-top:0;margin-bottom:0">For advanced compiler optimization, bytecode has to be translated to a Jimple or Shimple-like IR first anyway.</p>
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<p style="margin-top:0;margin-bottom:0">Finally, if using bytecode is no longer a good decision, it's totally possible to redesign Java distributable IR to be 3-address code. This hasn't discussed so I assume bytecode still has its reasons to be used. </p>
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<p style="margin-top:0;margin-bottom:0">Can someone with more experience shed some light? Thanks!</p>
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<p style="margin-top:0;margin-bottom:0">-Tong</p>
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