Re: [hardknott][PATCH] AArch64 support for Arm's Neoverse N2 CPU

["Mittal, Anuj" <anuj.mittal@intel.com>]

On Thu, 2022-01-06 at 16:11 +0530, pgowda cve wrote:
> Hi,
> 
> Gentle ping on this patch.
> 

I will take this and rest of gcc patches in next week's merge request.

Thanks,

Anuj

> Thanks,
> Pgowda
> 
> On Tue, Dec 21, 2021 at 4:11 PM pgowda <pgowda.cve@gmail.com> wrote:
> > 
> > The patch backports the AArch64 support for Arm's Neoverse N2 CPU
> > Upstream-Status: Backport
> > [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9428e9267435a62f
> > 672e2ba42df46432c021a9cf]
> > 
> > Signed-off-by: pgowda <pgowda.cve@gmail.com>
> > ---
> >  meta/recipes-devtools/gcc/gcc-10.2.inc        |  1 +
> >  .../gcc/0039-arm64-neoverse-n2-support.patch  | 60
> > +++++++++++++++++++
> >  2 files changed, 61 insertions(+)
> >  create mode 100644 meta/recipes-devtools/gcc/gcc/0039-arm64-
> > neoverse-n2-support.patch
> > 
> > diff --git a/meta/recipes-devtools/gcc/gcc-10.2.inc b/meta/recipes-
> > devtools/gcc/gcc-10.2.inc
> > index 5626bf20f0..89158258d7 100644
> > --- a/meta/recipes-devtools/gcc/gcc-10.2.inc
> > +++ b/meta/recipes-devtools/gcc/gcc-10.2.inc
> > @@ -74,6 +74,7 @@ SRC_URI = "\
> >             file://0002-CVE-2021-35465.patch \
> >             file://0003-CVE-2021-35465.patch \
> >             file://0004-CVE-2021-35465.patch \
> > +           file://0039-arm64-neoverse-n2-support.patch \
> >  "
> >  SRC_URI[sha256sum] =
> > "b8dd4368bb9c7f0b98188317ee0254dd8cc99d1e3a18d0ff146c855fe16c1d8c"
> > 
> > diff --git a/meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-n2-
> > support.patch b/meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-
> > n2-support.patch
> > new file mode 100644
> > index 0000000000..b3e0f396bd
> > --- /dev/null
> > +++ b/meta/recipes-devtools/gcc/gcc/0039-arm64-neoverse-n2-
> > support.patch
> > @@ -0,0 +1,60 @@
> > +From 9428e9267435a62f672e2ba42df46432c021a9cf Mon Sep 17 00:00:00
> > 2001
> > +From: Alex Coplan <alex.coplan@arm.com>
> > +Date: Tue, 29 Sep 2020 17:09:09 +0100
> > +Subject: [PATCH] aarch64: Add support for Neoverse N2 CPU
> > +
> > +This patch backports the AArch64 support for Arm's Neoverse N2 CPU
> > to
> > +GCC 10.
> > +
> > +gcc/ChangeLog:
> > +
> > +       * config/aarch64/aarch64-cores.def: Add Neoverse N2.
> > +       * config/aarch64/aarch64-tune.md: Regenerate.
> > +       * doc/invoke.texi: Document AArch64 support for Neoverse
> > N2.
> > +
> > +Upstream-Status: Backport
> > [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9428e9267435a62f
> > 672e2ba42df46432c021a9cf]
> > +
> > +Signed-off-by: pgowda <pgowda.cve@gmail.com>
> > +---
> > + gcc/config/aarch64/aarch64-cores.def | 3 +++
> > + gcc/config/aarch64/aarch64-tune.md   | 2 +-
> > + gcc/doc/invoke.texi                  | 4 ++--
> > + 3 files changed, 6 insertions(+), 3 deletions(-)
> > +
> > +diff --git a/gcc/config/aarch64/aarch64-cores.def
> > b/gcc/config/aarch64/aarch64-cores.def
> > +--- a/gcc/config/aarch64/aarch64-cores.def     2020-07-22
> > 23:35:17.320384289 -0700
> > ++++ b/gcc/config/aarch64/aarch64-cores.def     2021-12-21
> > 01:08:45.518472342 -0800
> > +@@ -135,6 +135,9 @@ AARCH64_CORE("zeus", zeus, cortexa57, 8_
> > + /* Qualcomm ('Q') cores. */
> > + AARCH64_CORE("saphira",     saphira,    saphira,    8_4A, 
> > AARCH64_FL_FOR_ARCH8_4 | AARCH64_FL_CRYPTO | AARCH64_FL_RCPC,
> > saphira,   0x51, 0xC01, -1)
> > +
> > ++/* Armv8.5-A Architecture Processors.  */
> > ++AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, 8_5A,
> > AARCH64_FL_FOR_ARCH8_5 | AARCH64_FL_I8MM | AARCH64_FL_BF16 |
> > AARCH64_FL_F16 | AARCH64_FL_SVE | AARCH64_FL_SVE2 |
> > AARCH64_FL_SVE2_BITPERM | AARCH64_FL_RNG | AARCH64_FL_MEMTAG,
> > neoversen1, 0x41, 0xd49, -1)
> > ++
> > + /* ARMv8-A big.LITTLE implementations.  */
> > +
> > + AARCH64_CORE("cortex-a57.cortex-a53",  cortexa57cortexa53,
> > cortexa53, 8A,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57,
> > 0x41, AARCH64_BIG_LITTLE (0xd07, 0xd03), -1)
> > +diff --git a/gcc/config/aarch64/aarch64-tune.md
> > b/gcc/config/aarch64/aarch64-tune.md
> > +--- a/gcc/config/aarch64/aarch64-tune.md       2020-07-22
> > 23:35:54.684795913 -0700
> > ++++ b/gcc/config/aarch64/aarch64-tune.md       2021-12-21
> > 01:09:56.829252050 -0800
> > +@@ -1,5 +1,5 @@
> > + ;; -*- buffer-read-only: t -*-
> > + ;; Generated automatically by gentune.sh from aarch64-cores.def
> > + (define_attr "tune"
> > +-     
> > "cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunde
> > rx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thund
> > erxt81,thunderxt83,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thund
> > erx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa
> > 76ae,cortexa77,cortexa65,cortexa65ae,ares,neoversen1,neoversee1,oct
> > eontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx
> > 2f95n,octeontx2f95mm,tsv110,thunderx3t110,zeus,saphira,cortexa57cor
> > texa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cor
> > texa75cortexa55,cortexa76cortexa55"
> > ++     
> > "cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunde
> > rx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thund
> > erxt81,thunderxt83,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thund
> > erx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa
> > 76ae,cortexa77,cortexa65,cortexa65ae,ares,neoversen1,neoversee1,oct
> > eontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx
> > 2f95n,octeontx2f95mm,tsv110,thunderx3t110,zeus,neoversen2,saphira,c
> > ortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73co
> > rtexa53,cortexa75cortexa55,cortexa76cortexa55"
> > +       (const (symbol_ref "((enum attr_tune) aarch64_tune)")))
> > +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
> > +--- a/gcc/doc/invoke.texi      2021-12-21 00:50:18.345426447 -0800
> > ++++ b/gcc/doc/invoke.texi      2021-12-21 01:11:18.547853686 -0800
> > +@@ -17010,8 +17010,8 @@ performance of the code.  Permissible va
> > + @samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73},
> > @samp{cortex-a75},
> > + @samp{cortex-a76}, @samp{cortex-a76ae}, @samp{cortex-a77},
> > + @samp{cortex-a65}, @samp{cortex-a65ae}, @samp{cortex-a34},
> > +-@samp{ares}, @samp{exynos-m1}, @samp{emag}, @samp{falkor},
> > +-@samp{neoverse-e1},@samp{neoverse-n1},@samp{qdf24xx},
> > @samp{saphira},
> > ++@samp{ares}, @samp{exynos-m1}, @samp{emag}, @samp{falkor},
> > @samp{neoverse-e1},
> > ++@samp{neoverse-n1}, @samp{neoverse-n2}, @samp{qdf24xx},
> > @samp{saphira},
> > + @samp{phecda}, @samp{xgene1}, @samp{vulcan}, @samp{octeontx},
> > + @samp{octeontx81},  @samp{octeontx83},
> > + @samp{octeontx2}, @samp{octeontx2t98}, @samp{octeontx2t96}
> > --
> > 2.31.1
> >