RFR(L): 8077838: Recent developments for ppc. (original) (raw)
Volker Simonis volker.simonis at gmail.com
Thu Apr 23 12:34:15 UTC 2015
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Hi Goetz,
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[8] -> vand
- a->lqarx_unchecked(R7, R3_ARG1, R4_ARG2, 1); // code[9] -> lqarx_m
- a->vcipher(VR0, VR1, VR2); // code[10] -> vcipher
Besides that, the change looks good.
Thanks for taking the effort to do this change!
Regards, Volker
On Wed, Apr 22, 2015 at 11:34 AM, Lindenmaier, Goetz <goetz.lindenmaier at sap.com> wrote:
Hi,
this change contains recent changes in the ppc directory mostly made by SAP. It's a ppc-only change. http://cr.openjdk.java.net/~goetz/webrevs/8077838-ppc/webrev.01/ - 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, Goetz.
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