RFR(M): 8171398: s390x: Make interpreter's math entries consistent with C1 and C2 and support FMA
goetz.lindenmaier at sap.com
Tue Dec 20 11:08:12 UTC 2016
thanks for implementing this. Change looks good and I know you
ran it through our tests.
Could you please adapt the comments in the ad file, they use 'src3'
which probably means the dst use-def source. (no new webrev needed).
From: hotspot-compiler-dev [mailto:hotspot-compiler-dev-bounces at openjdk.java.net] On Behalf Of Doerr, Martin
Sent: Samstag, 17. Dezember 2016 11:18
To: 'hotspot-compiler-dev at openjdk.java.net' <hotspot-compiler-dev at openjdk.java.net>
Subject: RFR(M): 8171398: s390x: Make interpreter's math entries consistent with C1 and C2 and support FMA
I'd like to address the same issue as on PPC64 on s390x.
As discussed in , floating point computations should produce consistent results regardless of whether the Java code gets interpreted or is compiled by any JIT-compiler.
In addition, JDK9 introduced new floating point multiply-accumulate intrinsics which are currently missing on s390x.
Webrev is here:
I have included a bugfix for parameter handling in an aes decrypt stub.
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