Comment #2 on issue 2168 by [email protected]: Support for using armv6
vfp2 instructions
http://code.google.com/p/v8/issues/detail?id=2168
Hi,
I am not from the V8 team but a few observations:
* V8 does not assume hardfp == VFPv3, hardp implies VFPv3 that is true,
but VFPv3 does not imply hardfp.
* with the above in mind, the patch is wrong as it assumes that
use_eabi_hardfloat() is equivalent to CpuFeatures::IsSupported(VFP3)
* If you add support for VFPv2 you may as well extend that support to all
instructions which are VFPv2 compatible
Also because you are not running on an ARMv7 core, the optimising compiler
(crankshaft) will not be used (and it can't as it will emit VFPv3 specific
instructions). The configuration you are using is not common so you may
want to talk with the V8 team about its support.
Regards,
Rodolph.
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