[gdbserver] x86 agent expression bytecode compiler (speed up conditional tracepoints)

[Tom Tromey]

>>>>> "Pedro" == Pedro Alves <pedro@codesourcery.com> writes:

Pedro> This adds a bytecode compiler to the linux x86 ports of
Pedro> gdbserver, that turns agent expression bytecodes into
Pedro> native code.  This greatly speeds up conditional tracepoints
Pedro> (by around an order of magnitude) that usually don't reference much
Pedro> more than a few variables (memory/registers), to around 100ns or
Pedro> less on a typical modern x86 box.

This is awesome!  I think it deserves a NEWS entry.

Tom