RFR: 8139259: aarch64: jtreg test TestLogSum segvs after 8132207

[Igor Veresov]

This seems one of parts of the P1 blocker (https://bugs.openjdk.java.net/browse/JDK-8139454 <https://bugs.openjdk.java.net/browse/JDK-8139454>). Roland, could you please push this (at least the library_call.cpp part)?

Thanks!
igor

> On Oct 9, 2015, at 5:23 AM, Roland Westrelin <roland.westrelin at oracle.com> wrote:
> 
> Hi Ed,
> 
>> http://cr.openjdk.java.net/~enevill/8139259/webrev/
> 
> All 64 bit x86 cpus support sse2 so the new check in stubGenerator_x86_64.cpp is useless. Given in the interpreter and c1, we call the exp stub unconditionally, it didn’t really make sense that it was conditional on UseSSE in c2, anyway. Your library_call.cpp change looks good to me. I’ll sponsor it.
> 
> Roland.

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