New Cog VMs available

On Mar 11, 2015, at 22:41, Eliot Miranda <[hidden email]> wrote:

...in http://www.mirandabanda.org/files/Cog/VM/VM.r3268/

CogVM binaries as per VMMaker.oscog-eem.1088/r3268

Squeak 5.0 release candidate.

Speed up normalize methods in LargeIntegersPlugin

by cacheing result of firstIndexableField.

Simplify integer conversion routines by adding byteSizeOfBytes: which assumes

argument is byte indexable (as LargeIntegers are).  Make sure integer conversion

routines consistently answer 0 on failure.  Use 4-byte access where possible.

Remove use of popInteger in AsFloat and integer comparison primitives (popStack

idiom is inefficient since multiplke writes as opposed to the single write in

the pop:thenPush: idiom).

Revise SpurMemoryManager>>isClassOfNonImm:equalTo:compactClassIndex: for

better dead code elimination.

--

best,

Eliot

On Mar 12, 2015, at 00:59, Douglas McPherson <[hidden email]> wrote:

I’ve also updated ARMv7 v3 and spur stack VMs.

Note:

I built the v3 and spur VMs on my new RPi2, which has a quad-core ARMv7. As Tim has already pointed out, these work even when building with FAST_BITBLT enhancements enabled. The cool thing is they also work on the BeagleBone Black ARMv7 (but building on the BBB with FAST_BITBLT enabled resulted in a segfault at image startup .. no idea why). And they appear to work on the older ARMv6 RPi too, so I’ll suspend building the v6 versions unless they’re needed. I haven’t tested on the Parallella yet.

Doug

On Mar 11, 2015, at 22:41, Eliot Miranda <[hidden email]> wrote:

...in http://www.mirandabanda.org/files/Cog/VM/VM.r3268/

CogVM binaries as per VMMaker.oscog-eem.1088/r3268

Squeak 5.0 release candidate.

Speed up normalize methods in LargeIntegersPlugin

by cacheing result of firstIndexableField.

Simplify integer conversion routines by adding byteSizeOfBytes: which assumes

argument is byte indexable (as LargeIntegers are).  Make sure integer conversion

routines consistently answer 0 on failure.  Use 4-byte access where possible.

Remove use of popInteger in AsFloat and integer comparison primitives (popStack

idiom is inefficient since multiplke writes as opposed to the single write in

the pop:thenPush: idiom).

Revise SpurMemoryManager>>isClassOfNonImm:equalTo:compactClassIndex: for

better dead code elimination.

--

best,

Eliot