Hi guys, I've got the machine in question.
This patch you attached won't apply to the latest hg. It appears to have
been already applied, so I'm comparing the hg tip (16317:07a2dde2c971) vs
the last log entry before BMI2 is mentioned (16313:8b074a2e0134).
Mercurial tip:
===
While testing the latest development code we've discovered that it fails on
specific Pentium D Haswell CPUs. These CPUs are odd in that they don't
have the BMI2 instruction set. Because of this GMP will crash when it
attempts to execute a MULX. The specific model is: Intel(R) Pentium(R) CPU
John Sully j...@csquare.ca writes:
While testing the latest development code we've discovered that it fails on
specific Pentium D Haswell CPUs. These CPUs are odd in that they don't
have the BMI2 instruction set. Because of this GMP will crash when it
attempts to execute a MULX. The
That fix is sufficient for our use cases, it looks like we don't exercise
the other code paths. You would know best as to exactly which features to
detect.
By the way we're really happy with the extra performance in the latest
development builds. Keep up the good work!
On Thu, Feb 20, 2014 at
