Fixing some bugs in threading required fixing how the futexes operate.
Instead of the terrible condition variables and atomic values just use
the kernel futex facility directly.
This required fixing some of the threading management since otherwise
there was a issue around the weird mixture of our threads using our
"Futex" class and the kernel expecting real futexes on the values.
Just switch everything over and it ends up being cleaner
Fixes random mutex failures that were happening in various applications
Changes the IR register class definition to exist in the JSON file.
Removes a couple of IR ops that were unused and weren't necessary.
Changes the CPUID IR op to the new paired op which improves perf ever so
slightly.
Changes RA class handling in the RA pass to pull directly from the new
generated helper routine until it hits a complex op
Still need RA constraints to remove extraneous moves that would crop up
Currently only support partially ignoring for overlay 0x66, this means
we only support no overlay at all and 0x66. Using only two bits of flag
space rather than 3.
If we find an instruction family that supports a different one then we
should break it out to three independent flags. Keeping it two until
then
Unit tests to ensure this keeps working is forthcoming
These instructions treat the immediate encoding differently depending on
the operating size of the instruction
For 16bit and 32bit operation they treat the immediate as an
appropriately sized immediate.
For 64bit operand size the immediate is sign extended to handle the new
operating width.
CMP was previously set to SEXT for this which would have its own set of
problems handling it like that.
David Miller