[llvm-commits] [patch] JITCodeEmitter speedup patch

[Aaron Gray]

You probably won't want this patch, premature optmization and all that, but
I will send it anyway as I had ti ready to send once the ObjectCodeEmitter
patch when in removing the cruft that was standing in the way
in MachineCodeEmitter.

It also has a extend() method for extending the buffer and continuing if th
buffer overfolws. And a reserveBytes that can be used in conjunction with
the raw*emit methods to allow a whole instruction to be output without any
buffer checking.

This patch relies on the generically parameterized *CodeEmitters for its
performance. And would its performance would be overridded buy the use of
vitutal methods for the emit methods.

Aaaron
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