RFR(XS): 8213779: Loop opts anti dependent store detection should ignore uncommon trap calls

[Vladimir Kozlov]

Looks good.

Based on history there was CheckTypeNode subclass of IfNode which had more inputs.

Vladimir

On 11/13/18 1:05 AM, Roland Westrelin wrote:
> 
> http://cr.openjdk.java.net/~roland/8213779/webrev.00/
> 
> This is a small improvement to anti dependent store detection during
> loop opts: uncommon trap calls don't make any change to the memory state
> so shouldn't be considered as stores. Unrelated, this patch removes what
> appears to be dead code in ifnode.cpp (an IfNode never has 3 inputs).
> 
> Roland.
>