[PATCH 2/2] arm: Add support for Neoverse N2 CPU

[Alex Coplan <alex.coplan@arm.com>]

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This adds support for Arm's Neoverse N2 CPU to AArch32 binutils. The
Neoverse N2 CPU builds AArch32 at EL0 and therefore needs support in the
AArch32 assembler.

Testing:
 * Regression tested on arm-none-eabi.

OK for master?

Thanks,
Alex

---

gas/ChangeLog:

2020-09-23  Alex Coplan  <alex.coplan@arm.com>

	* config/tc-arm.c (arm_cpus): Add Neoverse N2.
	* doc/c-arm.texi: Document -mcpu=neoverse-n2.

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diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 32feaa1ca09..fce3ad36e0a 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -31594,6 +31594,11 @@ static const struct arm_cpu_option_table arm_cpus[] =
   ARM_CPU_OPT ("neoverse-n1",    "Neoverse N1",	       ARM_ARCH_V8_2A,
 	       ARM_FEATURE_CORE_HIGH (ARM_EXT2_FP16_INST),
 	       FPU_ARCH_CRYPTO_NEON_VFP_ARMV8_DOTPROD),
+  ARM_CPU_OPT ("neoverse-n2",	 "Neoverse N2",	       ARM_ARCH_V8_5A,
+	       ARM_FEATURE_CORE_HIGH (ARM_EXT2_FP16_INST
+				    | ARM_EXT2_BF16
+				    | ARM_EXT2_I8MM),
+	       FPU_ARCH_CRYPTO_NEON_VFP_ARMV8_4),
   /* ??? XSCALE is really an architecture.  */
   ARM_CPU_OPT ("xscale",	  NULL,		       ARM_ARCH_XSCALE,
 	       ARM_ARCH_NONE,
diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index 91803605775..39e24e71af0 100644
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -151,6 +151,7 @@ recognized:
 @code{marvell-pj4},
 @code{marvell-whitney},
 @code{neoverse-n1},
+@code{neoverse-n2},
 @code{xgene1},
 @code{xgene2},
 @code{ep9312} (ARM920 with Cirrus Maverick coprocessor),