On 2014/02/19 10:52:40, ulan wrote:
Thanks for the comments, Rodolph and Jacob!
I tried fixed width MemoryRead/Write in this CL:
https://codereview.chromium.org/172223002
It improves Richards score to 55.5. The hottest function in perf profile
is
Instruction::Bits, memcpy is in top 3.
I looked at the assembly output, and the memcpy is actually optimized away.
I wanted to point out Instruction::SignedBits already uses the
reinterpret_cast<> magic, so adding it to Bits() at least doesn't make it
worse[tm].
I also tried to force inline Instruction::Bits which makes it disappear
from the
perf output, so I guess that's a bit of a red herring anyway. The real
problem
is that decoding the instructions takes too long :-/
https://codereview.chromium.org/169223004/
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