[Qemu-devel] performance of qemu

[Johan Rydberg]

Hi,

has anyone of you guys (Fabrice et al) done any performance measurements of
QEMU?  I'm particular intrested in the performance of functions that
set the condition codes.  

If I'm not mistaken, the condition codes is simulated using two values and
an operator specifying what type of insn that generated the condition codes.

When is the full eflags register generated?  In the epilogue of a translated
block, or when ever an insn/callback reads the eflag register?

Is any optmization done in the case that two insns that kill the condition 
codes? (example: two insns that kills the condition codes, but no insn between 
them that uses it).

brgds,
Johan.