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[AArch64] Fix ARMv8.1 and ARMv8.2 feature settings.

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ARMv8.1 includes CRC as a required extension but this isn't reflected in
the features enabled by -march=armv8.1-a. The FP16 feature modifier also
clashes with AARCH64_FEATURE_V8_1 and the list of features for ARMv8.2
is missing ARMv8.1 features.

This patch enables +crc for -march values of armv8.1-a and later. It
also fixes the values for AARCH64_FEATURE_F16 and makes
AARCH64_ARCH_V8_2 and superset of AARCH64_ARCH_V8_2.

gas/
2015-12-10  Matthew Wahab  <matthew.wahab@arm.com>

	* doc/c-aarch64.texi (AArch64 Extensions): Update entry for crc.

include/opcode
2015-12-10  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64.h (AARCH64_FEATURE_F16): Fix clash with
	AARCH64_FEATURE_V8_1.
	(AARCH64_ARCH_V8_1): Add AARCH64_FEATURE_CRC.
	(AARCH64_ARCH_V8_2): Add AARCH64_FEATURE_CRC and
	AARCH64_FEATURE_V8_1.

Change-Id: I8af5369f6df2430b28f6cec92870d2a4d14a7431
This commit is contained in:
Matthew Wahab 2015-12-10 13:58:21 +00:00
parent 0f59c28f61
commit af117b3cf1
4 changed files with 18 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
gas/ChangeLog
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@ -1,3 +1,7 @@
2015-12-10 Matthew Wahab <matthew.wahab@arm.com>
* doc/c-aarch64.texi (AArch64 Extensions): Update entry for crc.
2015-12-10 Andrew Burgess <andrew.burgess@embecosm.com>
* config/tc-arc.c (md_parse_option): Return 1 in order to accept

2
gas/doc/c-aarch64.texi
View file

@ -128,7 +128,7 @@ automatically cause those extensions to be disabled.
@multitable @columnfractions .12 .17 .17 .54
@headitem Extension @tab Minimum Architecture @tab Enabled by default
@tab Description
@item @code{crc} @tab ARMv8-A @tab No
@item @code{crc} @tab ARMv8-A @tab ARMv8.1-A or later
@tab Enable CRC instructions.
@item @code{crypto} @tab ARMv8-A @tab No
@tab Enable cryptographic extensions. This implies @code{fp} and @code{simd}.