[AArch64] Add ARMv8.2 command line option and feature flag.

Matthew Wahab matthew.wahab@foss.arm.com
Wed Nov 18 11:25:00 GMT 2015


ARMv8.2 is an architectural extension of ARMv8. This patch adds an
architecture feature macro for ARMv8.2 to the binutils AArch64 target
with GAS command line option -march=armv8.2-a.

Tested aarch64-none-linux-gnu with cross-compiled check-binutils and
check-gas. Checked the HTML documentation in Firefox.

Ok for trunk?

2015-11-18  Matthew Wahab  <matthew.wahab@arm.com>

	* config/tc-aarch64.c (aarch64_archs): Add "armv8.2-a".
	* doc/c-aarch64.texi (-march): Likewise.

2015-11-18  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64.h (AARCH64_FEATURE_V8_2): New.
	(AARCH64_ARCH_V8_2): New.
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