aarch64: Enable Cortex-X3 CPU

Hi,

This patch adds support for the Cortex-X3 CPU to binutils.

Gas regression testing for aarch64-none-linux-gnu target and found no regressions.

Ok for binutils-master? I don't have commit access so I need someone to commit on my behalf.

Regards,

Matthieu.

bfd/cpu-aarch64.c

@@ -75,6 +75,7 @@ processors[] =
   { bfd_mach_aarch64,	  "cortex-a76ae"    },
   { bfd_mach_aarch64,	  "cortex-a77"	    },
   { bfd_mach_aarch64,	  "cortex-a720"	    },
+  { bfd_mach_aarch64,     "cortex-x3"       },
   { bfd_mach_aarch64,     "cortex-x4"       },
 };
 

gas/NEWS

@@ -32,6 +32,8 @@
 
 * Add support for Cortex-A720 for AArch64.
 
+* Add support for Cortex-X3 for AArch64.
+
 * Add support for Cortex-X4 for AArch64.
 
 * Add support for RISC-V T-Head extensions (XTheadVector, XTheadZvlsseg

gas/config/tc-aarch64.c

@@ -10189,6 +10189,8 @@ static const struct aarch64_cpu_option_table aarch64_cpus[] = {
 					      SSBS, PROFILE), "Cortex-X1"},
   {"cortex-x2",		AARCH64_CPU_FEATURES (V9A, 4, BFLOAT16, I8MM, MEMTAG,
 					      SVE2_BITPERM), "Cortex-X2"},
+  {"cortex-x3",		AARCH64_CPU_FEATURES (V9A, 4, BFLOAT16, I8MM, MEMTAG,
+					      SVE2_BITPERM), "Cortex-X3"},
   {"cortex-x4",         AARCH64_CPU_FEATURES (V9_2A, 3, MEMTAG, PROFILE,
                                               SVE2_BITPERM), "Cortex-X4"},
   {"generic",		AARCH64_ARCH_FEATURES (V8A), NULL},

gas/doc/c-aarch64.texi

@@ -91,6 +91,7 @@ on the target processor.  The following processor names are recognized:
 @code{cortex-r82},
 @code{cortex-x1},
 @code{cortex-x2},
+@code{cortex-x3},
 and
 @code{cortex-x4}.
 The special name @code{all} may be used to allow the assembler to accept

gas/testsuite/gas/aarch64/cpu-cortex-x3.d

@@ -0,0 +1,6 @@
+# name: Assemble and dump for cortex-x3 CPU
+# source: nop-asm.s
+# as: -mcpu=cortex-x3
+# objdump: -d -mcortex-x3
+
+#...