[gcc r12-3998] arm: Enable Cortex-R52+ CPU

[Przemyslaw Wirkus <wirkus@gcc.gnu.org>]

https://gcc.gnu.org/g:cd08eae26ed23497ace5f4ee6f3a41eb5bd36c38

commit r12-3998-gcd08eae26ed23497ace5f4ee6f3a41eb5bd36c38
Author: Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
Date:   Thu Sep 30 21:32:48 2021 +0100

    arm: Enable Cortex-R52+ CPU
    
    Patch is adding Cortex-R52+ as 'cortex-r52plus' command line
    flag for -mcpu option.
    
    gcc/ChangeLog:
    
            * config/arm/arm-cpus.in: Add Cortex-R52+ CPU.
            * config/arm/arm-tables.opt: Regenerate.
            * config/arm/arm-tune.md: Regenerate.
            * doc/invoke.texi: Update docs.

Diff:
---
 gcc/config/arm/arm-cpus.in    | 10 ++++++++++
 gcc/config/arm/arm-tables.opt |  3 +++
 gcc/config/arm/arm-tune.md    |  2 +-
 gcc/doc/invoke.texi           |  8 ++++----
 4 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/gcc/config/arm/arm-cpus.in b/gcc/config/arm/arm-cpus.in
index bcc9ebe9fe0..d0d0d0f1c7e 100644
--- a/gcc/config/arm/arm-cpus.in
+++ b/gcc/config/arm/arm-cpus.in
@@ -1612,6 +1612,16 @@ begin cpu cortex-r52
  part d13
 end cpu cortex-r52
 
+begin cpu cortex-r52plus
+ cname cortexr52plus
+ tune flags LDSCHED
+ architecture armv8-r+crc+simd
+ option nofp.dp remove FP_DBL ALL_SIMD
+ costs cortex
+ vendor 41
+ part d16
+end cpu cortex-r52plus
+
 # FPU entries
 # format:
 # begin fpu <name>
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
index 5692d4fb77a..8bb0c9f6a7b 100644
--- a/gcc/config/arm/arm-tables.opt
+++ b/gcc/config/arm/arm-tables.opt
@@ -282,6 +282,9 @@ Enum(processor_type) String(cortex-m55) Value( TARGET_CPU_cortexm55)
 EnumValue
 Enum(processor_type) String(cortex-r52) Value( TARGET_CPU_cortexr52)
 
+EnumValue
+Enum(processor_type) String(cortex-r52plus) Value( TARGET_CPU_cortexr52plus)
+
 Enum
 Name(arm_arch) Type(int)
 Known ARM architectures (for use with the -march= option):
diff --git a/gcc/config/arm/arm-tune.md b/gcc/config/arm/arm-tune.md
index b9df8640654..6482833fc35 100644
--- a/gcc/config/arm/arm-tune.md
+++ b/gcc/config/arm/arm-tune.md
@@ -49,5 +49,5 @@
 	cortexx1,neoversen1,cortexa75cortexa55,
 	cortexa76cortexa55,neoversev1,neoversen2,
 	cortexm23,cortexm33,cortexm35p,
-	cortexm55,cortexr52"
+	cortexm55,cortexr52,cortexr52plus"
 	(const (symbol_ref "((enum attr_tune) arm_tune)")))
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 5b016166972..718ce926aae 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -20478,8 +20478,8 @@ Permissible names are: @samp{arm7tdmi}, @samp{arm7tdmi-s}, @samp{arm710t},
 @samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-a75},
 @samp{cortex-a76}, @samp{cortex-a76ae}, @samp{cortex-a77},
 @samp{cortex-a78}, @samp{cortex-a78ae}, @samp{cortex-a78c},
-@samp{ares}, @samp{cortex-r4}, @samp{cortex-r4f},
-@samp{cortex-r5}, @samp{cortex-r7}, @samp{cortex-r8}, @samp{cortex-r52},
+@samp{ares}, @samp{cortex-r4}, @samp{cortex-r4f}, @samp{cortex-r5},
+@samp{cortex-r7}, @samp{cortex-r8}, @samp{cortex-r52}, @samp{cortex-r52plus},
 @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-x1},
@@ -20563,8 +20563,8 @@ Disables the floating-point and SIMD instructions on
 
 @item +nofp.dp
 Disables the double-precision component of the floating-point instructions
-on @samp{cortex-r5}, @samp{cortex-r7}, @samp{cortex-r8}, @samp{cortex-r52} and
-@samp{cortex-m7}.
+on @samp{cortex-r5}, @samp{cortex-r7}, @samp{cortex-r8}, @samp{cortex-r52},
+@samp{cortex-r52plus} and @samp{cortex-m7}.
 
 @item +nosimd
 Disables the SIMD (but not floating-point) instructions on