[Vm-dev] New Cog VMs available

[Eliot Miranda]

... at http://www.mirandabanda.org/files/Cog/VM/VM.r3048.

CogVM source as per VMMaker.oscog-eem.826/r3048

Fix the ZipPlugin (InflatePlugin&DeflatePlugin) to no longer depend on
specific
instance sizes for ReadStream and WriteStream which allows some leniency in
redefining these classes.  Fixes occasionaly Monticello commit bugs with
large packages after loading Collections-eem.567.

Fix compilation warnings in stringForCString:

Add a -warnpid flag that causes warning to print the pid;
useful in debugging multi-image tests (i.e. magma).

Reimplement the backward count in interpreted methods, storing the count
in IFrameFlags, hence eliminating the requirement that the jump happens
consecutively N times in a single method with no backward jumps in any other
method.  The Chameneos benchmark has this pattern and so two methods don't
get jitted.  This eliminates lastBackwardJumpMethod & backwardJumpCount.

Spur:
Fix bad bug in remapObj: that confused the test for old vs
new and hence tried to copyAndForward old objects.

Fix bug in processWeaklings that could remember a weak object twice.

Mark the methods used by SpurMemoryManager>>globalGarbageCollect as
inline: #never for profiling.

Spur Newspeak:
Initialize numIRCs before checking for quick prims.


-- 
best,
Eliot
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