[OpenSmalltalk/opensmalltalk-vm] f632ee: CogVM source as per VMMaker.oscog-eem.2799/ClosedV...

 
  Branch: refs/heads/Cog
  Home:   https://github.com/OpenSmalltalk/opensmalltalk-vm
  Commit: f632ee2888014ee88330ee994e13c9c609b57b5f
      https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/f632ee2888014ee88330ee994e13c9c609b57b5f
  Author: Eliot Miranda <[hidden email]>
  Date:   2020-09-02 (Wed, 02 Sep 2020)

  Changed paths:
    M nsspur64src/vm/cogitARMv8.c
    M spur64src/vm/cogitARMv8.c
    M spurlowcode64src/vm/cogitARMv8.c
    M spursista64src/vm/cogitARMv8.c

  Log Message:
  -----------
  CogVM source as per VMMaker.oscog-eem.2799/ClosedVMMaker-eem.98

Ha!  I am *STUPID*.
Integer overflow is not only determined by the upper 64-bits of a 64x64=>128 bit
multiply being either all zero or all ones (0 or -1), but by the upper 64-bits
being an extension of the most significant bit of the lower 64 bits!!