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From d7e8411f6a333d4054894ad3b23f23415a525230 Mon Sep 17 00:00:00 2001
From: Alex Coplan <alex.coplan@arm.com>
Date: Fri, 2 Oct 2020 16:06:15 +0100
Subject: [PATCH] arm: Add support for Neoverse N2 CPU
This patch backports the AArch32 support for Arm's Neoverse N2 CPU to
GCC 10.
gcc/ChangeLog:
* config/arm/arm-cpus.in (neoverse-n2): New.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/arm-tune.md: Regenerate.
* doc/invoke.texi: Document support for Neoverse N2.
Upstream-Status: Backport [https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=d7e8411f6a333d4054894ad3b23f23415a525230]
Signed-off-by: pgowda <pgowda.cve@gmail.com>
---
gcc/config/arm/arm-cpus.in | 12 ++++++++++++
gcc/config/arm/arm-tables.opt | 3 +++
gcc/config/arm/arm-tune.md | 5 +++--
gcc/doc/invoke.texi | 6 +++---
4 files changed, 21 insertions(+), 5 deletions(-)
diff --git a/gcc/config/arm/arm-cpus.in b/gcc/config/arm/arm-cpus.in
--- a/gcc/config/arm/arm-cpus.in 2021-12-20 20:24:59.912159845 -0800
+++ b/gcc/config/arm/arm-cpus.in 2021-12-20 21:00:04.417003845 -0800
@@ -1481,6 +1481,18 @@ begin cpu cortex-a76.cortex-a55
costs cortex_a57
end cpu cortex-a76.cortex-a55
+# Armv8.5 A-profile Architecture Processors
+begin cpu neoverse-n2
+ cname neoversen2
+ tune for cortex-a57
+ tune flags LDSCHED
+ architecture armv8.5-a+fp16+bf16+i8mm
+ option crypto add FP_ARMv8 CRYPTO
+ costs cortex_a57
+ vendor 41
+ part 0xd49
+end cpu neoverse-n2
+
# V8 M-profile implementations.
begin cpu cortex-m23
cname cortexm23
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
--- a/gcc/config/arm/arm-tables.opt 2020-07-22 23:35:54.688795958 -0700
+++ b/gcc/config/arm/arm-tables.opt 2021-12-20 21:00:04.421003776 -0800
@@ -253,6 +253,9 @@ EnumValue
Enum(processor_type) String(cortex-m23) Value( TARGET_CPU_cortexm23)
EnumValue
+Enum(processor_type) String(neoverse-n2) Value( TARGET_CPU_neoversen2)
+
+EnumValue
Enum(processor_type) String(cortex-m33) Value( TARGET_CPU_cortexm33)
EnumValue
diff --git a/gcc/config/arm/arm-tune.md b/gcc/config/arm/arm-tune.md
--- a/gcc/config/arm/arm-tune.md 2020-07-22 23:35:54.684795913 -0700
+++ b/gcc/config/arm/arm-tune.md 2021-12-20 21:02:44.630260284 -0800
@@ -46,6 +46,6 @@
cortexa73cortexa53,cortexa55,cortexa75,
cortexa76,cortexa76ae,cortexa77,
neoversen1,cortexa75cortexa55,cortexa76cortexa55,
- cortexm23,cortexm33,cortexm35p,
- cortexm55,cortexr52"
+ neoversen2,cortexm23,cortexm33,
+ cortexm35p,cortexm55,cortexr52"
(const (symbol_ref "((enum attr_tune) arm_tune)")))
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
--- a/gcc/doc/invoke.texi 2021-12-20 20:24:59.916159782 -0800
+++ b/gcc/doc/invoke.texi 2021-12-20 21:03:41.337290704 -0800
@@ -18857,9 +18857,9 @@ Permissible names are: @samp{arm7tdmi},
@samp{cortex-m35p}, @samp{cortex-m55},
@samp{cortex-m1.small-multiply}, @samp{cortex-m0.small-multiply},
@samp{cortex-m0plus.small-multiply}, @samp{exynos-m1}, @samp{marvell-pj4},
-@samp{neoverse-n1}, @samp{xscale}, @samp{iwmmxt}, @samp{iwmmxt2},
-@samp{ep9312}, @samp{fa526}, @samp{fa626}, @samp{fa606te}, @samp{fa626te},
-@samp{fmp626}, @samp{fa726te}, @samp{xgene1}.
+@samp{neoverse-n1}, @samp{neoverse-n2}, @samp{xscale}, @samp{iwmmxt},
+@samp{iwmmxt2}, @samp{ep9312}, @samp{fa526}, @samp{fa626}, @samp{fa606te},
+@samp{fa626te}, @samp{fmp626}, @samp{fa726te}, @samp{xgene1}.
Additionally, this option can specify that GCC should tune the performance
of the code for a big.LITTLE system. Permissible names are:
|
