RFR(L): 8077838: Recent developments for ppc.
goetz.lindenmaier at sap.com
Thu Apr 23 12:56:43 UTC 2015
Thanks fort he review, Volker!
I updated the webrev with your and Vladimir's proposals:
From: Volker Simonis [mailto:volker.simonis at gmail.com]
Sent: Donnerstag, 23. April 2015 14:34
To: Lindenmaier, Goetz
Cc: hotspot-dev at openjdk.java.net; ppc-aix-port-dev at openjdk.java.net
Subject: Re: RFR(L): 8077838: Recent developments for ppc.
this change is huge and not easy to review:)
So far I only found one mis-aligned comment in vm_version_ppc.cpp:
+ a->vand(VR0, VR0, VR0); // code -> vand
+ a->lqarx_unchecked(R7, R3_ARG1, R4_ARG2, 1); // code -> lqarx_m
+ a->vcipher(VR0, VR1, VR2); // code -> vcipher
Besides that, the change looks good.
Thanks for taking the effort to do this change!
On Wed, Apr 22, 2015 at 11:34 AM, Lindenmaier, Goetz
<goetz.lindenmaier at sap.com> wrote:
> this change contains recent changes in the ppc directory mostly made by SAP.
> It's a ppc-only change.
> - Recognition of Power 8 processors (by Tiago Sturmer Daitx).
> - Support for more new Power 8 instructions.
> - Support for transactional memory. This is implemented but not yet tested
> thoroughly due to limitiations of the OS support. Not enabled.
> - java.lang.math.*Exact intrinsics
> - Some C2 optimizations and fixes:
> * Handling of flag registers. Some instructions would lead to uncompilable
> methods due to not allocatable register patterns.
> * Free some integer registers to use them for allocation. Handle compressed
> oops base as constant.
> * Unscaled class compression.
> - Type profiling fixes.
> Please review this change.
> Best regards,
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