From 0eef5eea2b42d892df52b655e55458f27ac3fb81 Mon Sep 17 00:00:00 2001
From: Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
Date: Tue, 29 Sep 2020 22:22:44 +0100
Subject: [PATCH] arm: add support for Cortex-X1

This adds support for the Arm Cortex-X1 CPU. For more information about this
processor, see [0].

[0] : https://www.arm.com/products/cortex-x

gcc/ChangeLog:

	* config/arm/arm-cpus.in: Add Cortex-X1 core.
	* config/arm/arm-tables.opt: Regenerate.
	* config/arm/arm-tune.md: Regenerate.
	* doc/invoke.texi: Update docs.
---
 gcc/config/arm/arm-cpus.in    | 11 +++++++++++
 gcc/config/arm/arm-tables.opt |  3 +++
 gcc/config/arm/arm-tune.md    |  8 ++++----
 gcc/doc/invoke.texi           |  2 +-
 4 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/gcc/config/arm/arm-cpus.in b/gcc/config/arm/arm-cpus.in
index bf460ddbcaf..47a343db656 100644
--- a/gcc/config/arm/arm-cpus.in
+++ b/gcc/config/arm/arm-cpus.in
@@ -1447,6 +1447,17 @@ begin cpu cortex-a77
  part d0d
 end cpu cortex-a77
 
+begin cpu cortex-x1
+ cname cortexx1
+ tune for cortex-a57
+ tune flags LDSCHED
+ architecture armv8.2-a+fp16+dotprod
+ option crypto add FP_ARMv8 CRYPTO
+ costs cortex_a57
+ vendor 41
+ part d44
+end cpu cortex-x1
+
 begin cpu neoverse-n1
  cname neoversen1
  alias !ares
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
index b57206313e2..dac881874f8 100644
--- a/gcc/config/arm/arm-tables.opt
+++ b/gcc/config/arm/arm-tables.opt
@@ -240,6 +240,9 @@ Enum(processor_type) String(cortex-a76ae) Value( TARGET_CPU_cortexa76ae)
 EnumValue
 Enum(processor_type) String(cortex-a77) Value( TARGET_CPU_cortexa77)
 
+EnumValue
+Enum(processor_type) String(cortex-x1) Value( TARGET_CPU_cortexx1)
+
 EnumValue
 Enum(processor_type) String(neoverse-n1) Value( TARGET_CPU_neoversen1)
 
diff --git a/gcc/config/arm/arm-tune.md b/gcc/config/arm/arm-tune.md
index 2377037bf7d..86a117d68ce 100644
--- a/gcc/config/arm/arm-tune.md
+++ b/gcc/config/arm/arm-tune.md
@@ -45,8 +45,8 @@
 	cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,
 	cortexa73cortexa53,cortexa55,cortexa75,
 	cortexa76,cortexa76ae,cortexa77,
-	neoversen1,neoversen2,cortexa75cortexa55,
-	cortexa76cortexa55,neoversev1,cortexm23,
-	cortexm33,cortexm35p,cortexm55,
-	cortexr52"
+	cortexx1,neoversen1,neoversen2,
+	cortexa75cortexa55,cortexa76cortexa55,neoversev1,
+	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
index 200ecf7bbf8..274c17ec17a 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -19379,7 +19379,7 @@ Permissible names are: @samp{arm7tdmi}, @samp{arm7tdmi-s}, @samp{arm710t},
 @samp{cortex-r5}, @samp{cortex-r7}, @samp{cortex-r8}, @samp{cortex-r52},
 @samp{cortex-m0}, @samp{cortex-m0plus}, @samp{cortex-m1}, @samp{cortex-m3},
 @samp{cortex-m4}, @samp{cortex-m7}, @samp{cortex-m23}, @samp{cortex-m33},
-@samp{cortex-m35p}, @samp{cortex-m55},
+@samp{cortex-m35p}, @samp{cortex-m55}, @samp{cortex-x1},
 @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{neoverse-n2}, @samp{neoverse-v1}, @samp{xscale},
-- 
2.30.2