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Re: New no-undefined-overflow branch

>> If this does not work, on ARM you can also hope for something like this:
>>
>>      ADD    R0, R1, R2
>>      XORS   R0, R2, R3
>>      XORSMI R1, R2, R3
>>      SWIMI  #trap
> 
> On ARM you can just check for overflow directly...
> 
> 	ADDS	R0, R1, R2
> 	SWIVS	#trap

Of course, I was thinking explicitly of what happens with no MD support.

Paolo
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