[Vm-dev] VM Maker: VMMaker.oscog-tfel.1864.mcz

[commits at source.squeak.org]

Tim Felgentreff uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-tfel.1864.mcz

==================== Summary ====================

Name: VMMaker.oscog-tfel.1864
Author: tfel
Time: 20 May 2016, 5:59:56.886404 pm
UUID: 9568cdb7-bc2a-a049-a7b0-3d17905c53b9
Ancestors: VMMaker.oscog-tfel.1863

revert changes to Integer>>signedIntFromLong, they cost too much performance on Cog/Spur

=============== Diff against VMMaker.oscog-tfel.1863 ===============

Item was changed:
  ----- Method: Integer>>signedIntFromLong (in category '*VMMaker-interpreter simulator') -----
  signedIntFromLong
  	"Self is a signed or unsigned 32-bit integer"
+ 
  	| bits |
+ 	(self >= -1073741824 and: [self <= 1073741823]) ifTrue: "These are known to be SmallIntegers..."
+ 		[^self].
- 	 "If it's already 32bits, avoid computation"
- 	(self >= -16r80000000 and: [self <= 16r7FFFFFFF])
- 		ifTrue: [^self].
  	bits := self bitAnd: 16rFFFFFFFF.
  	(bits digitAt: 4) <= 16r7F ifTrue: [^bits].
  	^bits - 16r100000000!