Fabrice Bellard wrote: [snip] > >>>There is no good reason to make > >>>the selection at compile time because the translator can efficiently > >>>handle any CPU differences at runtime. > > > > > >I'm a bit dubious about this argument, each instruction needs to be > >checked agains a tuple of values. How much performance loss would be > >acceptable? > > It slows down the translator a bit, but most of the time is spent in the > generated code, not in the translator (otherwise there is no point in > doing dynamic translation !).
Well, based on that theory I moved the CP0 register handling to dynamic translation. The patch was rejected because I had no effective method to assess the performance gain. So I wonder what the accepted tradeoffs for the implementation are. Thiemo _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
