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

Ioi Lam ioi.lam at oracle.com
Thu Jun 27 05:42:18 UTC 2019


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



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