RFR (M): 8152907: Update for tan and log10 for x86

Christian Thalinger christian.thalinger at oracle.com
Tue Mar 29 18:28:58 UTC 2016

> On Mar 29, 2016, at 6:38 AM, Rukmannagari, Shravya <shravya.rukmannagari at intel.com> wrote:
> Hi Christian,
> We would add separate files for each intrinsic. By splitting the CompilerDirectives, do you mean we have to add a separate file. Sorry I didn’t exactly get it.

Oh, sorry, I wasn’t clear enough.  Please file a new enhancement for the CompilerDirectives changes and integrate them separately.

> Thanks,
> Shravya Rukmannagari.
>   <>
> From: Christian Thalinger [mailto:christian.thalinger at oracle.com] 
> Sent: Monday, March 28, 2016 5:18 PM
> To: Deshpande, Vivek R <vivek.r.deshpande at intel.com>
> Cc: hotspot compiler <hotspot-compiler-dev at openjdk.java.net>; Vladimir Kozlov <vladimir.kozlov at oracle.com>; Rukmannagari, Shravya <shravya.rukmannagari at intel.com>
> Subject: Re: RFR (M): 8152907: Update for tan and log10 for x86
> I left this comment in the bug:
> I think for the saneness of the macroAssembler_libm_x86_*.cpp files we should put every intrinsic in its own file, like we did for macroAssembler_x86_sha.cpp. They are already too big: 
> $ wc -l hotspot/src/cpu/x86/vm/macroAssembler_libm_x86_*.cpp 
>     4571 hotspot/src/cpu/x86/vm/macroAssembler_libm_x86_32.cpp 
>     3945 hotspot/src/cpu/x86/vm/macroAssembler_libm_x86_64.cpp 
> Also, can we split out the CompilerDirectives changes?
> On Mar 28, 2016, at 1:52 PM, Deshpande, Vivek R <vivek.r.deshpande at intel.com <mailto:vivek.r.deshpande at intel.com>> wrote:
> Hi all
> We would like to contribute a patch which optimizes tan and log10 X86 architecture using Intel LIBM library.
> Could you please review and sponsor this patch.
> Bug-id:
> https://bugs.openjdk.java.net/browse/JDK-8152907 <https://bugs.openjdk.java.net/browse/JDK-8152907>
> webrev:
> http://cr.openjdk.java.net/~vdeshpande/libm_tanlog10/8152907/webrev.00/ <http://cr.openjdk.java.net/~vdeshpande/libm_tanlog10/8152907/webrev.00/>
> Thanks and regards,
> Vivek

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