[gcc r14-4461] aarch64: Enable Cortex-X4 CPU

[gcc r14-4461] aarch64: Enable Cortex-X4 CPU

[Richard Sandiford]

https://gcc.gnu.org/g:3bfde22cbfa689a4c09f5727fb6f693241ce1d6a

commit r14-4461-g3bfde22cbfa689a4c09f5727fb6f693241ce1d6a
Author: Saurabh Jha <saurabh.jha@arm.com>
Date:   Sat Oct 7 13:40:25 2023 +0100

    aarch64: Enable Cortex-X4 CPU
    
    This patch adds support for the Cortex-X4 CPU to GCC.
    
    gcc/ChangeLog:
            * config/aarch64/aarch64-cores.def (AARCH64_CORE): Add support for
            cortex-x4 core.
            * config/aarch64/aarch64-tune.md: Regenerated.
            * doc/invoke.texi: Add command-line option for cortex-x4 core.

Diff:
---
 gcc/config/aarch64/aarch64-cores.def | 2 ++
 gcc/config/aarch64/aarch64-tune.md   | 2 +-
 gcc/doc/invoke.texi                  | 6 +++---
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index dd474233872..eae40b29df6 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -182,6 +182,8 @@ AARCH64_CORE("cortex-x2",  cortexx2, cortexa57, V9A,  (SVE2_BITPERM, MEMTAG, I8M
 
 AARCH64_CORE("cortex-x3",  cortexx3, cortexa57, V9A,  (SVE2_BITPERM, MEMTAG, I8MM, BF16), neoversen2, 0x41, 0xd4e, -1)
 
+AARCH64_CORE("cortex-x4",  cortexx4, cortexa57, V9_2A,  (SVE2_BITPERM, MEMTAG, PROFILE), neoversen2, 0x41, 0xd81, -1)
+
 AARCH64_CORE("neoverse-n2", neoversen2, cortexa57, V9A, (I8MM, BF16, SVE2_BITPERM, RNG, MEMTAG, PROFILE), neoversen2, 0x41, 0xd49, -1)
 
 AARCH64_CORE("neoverse-v2", neoversev2, cortexa57, V9A, (I8MM, BF16, SVE2_BITPERM, RNG, MEMTAG, PROFILE), neoversev2, 0x41, 0xd4f, -1)
diff --git a/gcc/config/aarch64/aarch64-tune.md b/gcc/config/aarch64/aarch64-tune.md
index ccfcad53f80..c969277d617 100644
--- a/gcc/config/aarch64/aarch64-tune.md
+++ b/gcc/config/aarch64/aarch64-tune.md
@@ -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,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,ampere1,ampere1a,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa78,cortexa78ae,cortexa78c,cortexa65,cortexa65ae,cortexx1,cortexx1c,neoversen1,ares,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,a64fx,tsv110,thunderx3t110,neoversev1,zeus,neoverse512tvb,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55,cortexr82,cortexa510,cortexa520,cortexa710,cortexa715,cortexa720,cortexx2,cortexx3,neoversen2,neoversev2,demeter"
+	"cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,ampere1,ampere1a,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa78,cortexa78ae,cortexa78c,cortexa65,cortexa65ae,cortexx1,cortexx1c,neoversen1,ares,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,a64fx,tsv110,thunderx3t110,neoversev1,zeus,neoverse512tvb,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55,cortexr82,cortexa510,cortexa520,cortexa710,cortexa715,cortexa720,cortexx2,cortexx3,cortexx4,neoversen2,neoversev2,demeter"
 	(const (symbol_ref "((enum attr_tune) aarch64_tune)")))
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 1573cf1176a..7c5f81d9783 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -20631,9 +20631,9 @@ performance of the code.  Permissible values for this option are:
 @samp{cortex-a73.cortex-a35}, @samp{cortex-a73.cortex-a53},
 @samp{cortex-a75.cortex-a55}, @samp{cortex-a76.cortex-a55},
 @samp{cortex-r82}, @samp{cortex-x1}, @samp{cortex-x1c}, @samp{cortex-x2},
-@samp{cortex-x3}, @samp{cortex-a510}, @samp{cortex-a520}, @samp{cortex-a710},
-@samp{cortex-a715}, @samp{cortex-a720}, @samp{ampere1}, @samp{ampere1a},
-and @samp{native}.
+@samp{cortex-x3}, @samp{cortex-x4}, @samp{cortex-a510}, @samp{cortex-a520},
+@samp{cortex-a710}, @samp{cortex-a715}, @samp{cortex-a720}, @samp{ampere1},
+@samp{ampere1a}, and @samp{native}.
 
 The values @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53},
 @samp{cortex-a73.cortex-a35}, @samp{cortex-a73.cortex-a53},