RFR 8226860 [lworld][c1] runtime/valhalla/valuetypes/Ifacmp.java fails with C1

[Tobias Hartmann]

Hi Ioi,

looks good to me.

Best regards,
Tobias

On 27.06.19 07:42, Ioi Lam wrote:
> https://bugs.openjdk.java.net/browse/JDK-8226860
> http://cr.openjdk.java.net/~iklam/valhalla/8226860-runtime-ifacmp-test-fails-with-c1.v01/
> 
> In C1, substitutability check was implemented only in LIRGenerator::do_IfOp().
> This patch implements it also in LIRGenerator::do_If().
> 
> I also fixed a bug in SubstitutabilityCheckStub which would unintentionally scratch
> the RAX register.
> 
> Thanks
> - Ioi
>