RFR: 8224090: [PPC64] Fix SLP patterns for filling an array with double float literals

[Doerr, Martin]

Right, this needs to get changed.

Best regards,
Martin

> -----Original Message-----
> From: Volker Simonis <volker.simonis at gmail.com>
> Sent: Dienstag, 28. Mai 2019 15:04
> To: Kazunori Ogata <OGATAK at jp.ibm.com>
> Cc: Doerr, Martin <martin.doerr at sap.com>; hotspot-compiler-
> dev at openjdk.java.net; ppc-aix-port-dev at openjdk.java.net
> Subject: Re: RFR: 8224090: [PPC64] Fix SLP patterns for filling an array with
> double float literals
> 
> Hi Ogata,
> 
> you change looks good, but you should use "jlong_cast()" in the
> "immD_0()" operand.
> 
> Thank you and best regards,
> Volker
> 
> 
> On Tue, May 28, 2019 at 12:26 PM Kazunori Ogata <OGATAK at jp.ibm.com>
> wrote:
> >
> > Hi Martin,
> >
> > Thank you for your review.
> >
> > Regards,
> > Ogata
> >
> > "Doerr, Martin" <martin.doerr at sap.com> wrote on 2019/05/28 18:21:29:
> >
> > > From: "Doerr, Martin" <martin.doerr at sap.com>
> > > To: Kazunori Ogata <OGATAK at jp.ibm.com>, "hotspot-compiler-
> > > dev at openjdk.java.net" <hotspot-compiler-dev at openjdk.java.net>,
> "ppc-aix-
> > > port-dev at openjdk.java.net" <ppc-aix-port-dev at openjdk.java.net>
> > > Date: 2019/05/28 18:21
> > > Subject: [EXTERNAL] RE: RFR: 8224090: [PPC64] Fix SLP patterns for
> > filling
> > > an array with double float literals
> > >
> > > Hi Ogata,
> > >
> > > looks good. Thanks for fixing.
> > >
> > > Best regards,
> > > Martin
> > >
> > >
> > > > -----Original Message-----
> > > > From: hotspot-compiler-dev <hotspot-compiler-dev-
> > > > bounces at openjdk.java.net> On Behalf Of Kazunori Ogata
> > > > Sent: Freitag, 17. Mai 2019 07:34
> > > > To: hotspot-compiler-dev at openjdk.java.net; ppc-aix-port-
> > > > dev at openjdk.java.net
> > > > Subject: RFR: 8224090: [PPC64] Fix SLP patterns for filling an array
> > with double
> > > > float literals
> > > >
> > > > Hi,
> > > >
> > > > May I get review for a webrev to fix SLP patterns that use PPC64 VSX
> > > > instructions?
> > > >
> > > > We found that SLP patterns added by JDK-8208171 [1] use incorrect
> data
> > > > type, so the patterns have never been used. Further, the pattern for
> > > > filling -1.0 is confused with the operation for filling -1L.
> > > >
> > > > This webrev fixes the pattern to fill an array with 0 to use 0.0d
> > instead
> > > > of 0d, and removes the pattern to will with -1 because the bit pattern
> > of
> > > > -1.0d is not easy to generate using a single VSX instruction.  It's
> > should
> > > > be better to load the literal from TOC and use general repl2D_reg_Ex
> > > > pattern.
> > > >
> > > > I also fixed some comments in "format %{ ... %}" to show correct
> > matching
> > > > types.
> > > >
> > > >
> > > > Bug: https://bugs.openjdk.java.net/browse/JDK-8224090
> > > >
> > > > Webrev: http://cr.openjdk.java.net/~horii/8224090/webrev.00/
> > > >
> > > > Ref:
> > > > [1] https://bugs.openjdk.java.net/browse/JDK-8208171
> > > >
> > > >
> > > > Regards,
> > > > Ogata
> > >
> > >
> >
> >