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[AArch64] Add support for Arm Cortex-A76

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The Cortex-A76 is an Armv8.2-A processor with dotproduct and FP16 support.
It can be paired with the Cortex-A55 and hence the option
-mcpu/-mtune=cortex-a76.cortex-a55 is also introduced.

Bootstrapped and tested on aarch64-none-linux-gnu. 

	* config/aarch64/aarch64-cores.def (cortex-a76): New entry.
	(cortex-a76.cortex-a55): Likewise.
	* config/aarch64/aarch64-tune.md: Regenerate.
	* doc/invoke.texi (AArch64 Options): Document cortex-a76 and
	cortex-a76.cortex-a55.

From-SVN: r262186
This commit is contained in:
Kyrylo Tkachov 2018-06-27 14:33:16 +00:00 • committed by Kyrylo Tkachov
parent 979bcc9993
commit 25846b5089
4 changed files with 16 additions and 5 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2018-06-27 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/aarch64/aarch64-cores.def (cortex-a76): New entry.
(cortex-a76.cortex-a55): Likewise.
* config/aarch64/aarch64-tune.md: Regenerate.
* doc/invoke.texi (AArch64 Options): Document cortex-a76 and
cortex-a76.cortex-a55.
2018-06-27 Jeff Law <law@redhat.com>
* config/v850/t-v850 (MULTILIB_OPTIONS): Remove 8byte-align.

2
gcc/config/aarch64/aarch64-cores.def
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@ -85,6 +85,7 @@ AARCH64_CORE("thunderx2t99", thunderx2t99, thunderx2t99, 8_1A, AARCH64_FL_FOR
/* ARM ('A') cores. */
AARCH64_CORE("cortex-a55", cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa53, 0x41, 0xd05, -1)
AARCH64_CORE("cortex-a75", cortexa75, cortexa57, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, 0xd0a, -1)
AARCH64_CORE("cortex-a76", cortexa76, cortexa57, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa72, 0x41, 0xd0b, -1)
/* ARMv8.4-A Architecture Processors. */
@ -101,5 +102,6 @@ AARCH64_CORE("cortex-a73.cortex-a53", cortexa73cortexa53, cortexa53, 8A, AARCH
/* ARM DynamIQ big.LITTLE configurations. */
AARCH64_CORE("cortex-a75.cortex-a55", cortexa75cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, AARCH64_BIG_LITTLE (0xd0a, 0xd05), -1)
AARCH64_CORE("cortex-a76.cortex-a55", cortexa76cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa72, 0x41, AARCH64_BIG_LITTLE (0xd0b, 0xd05), -1)
#undef AARCH64_CORE

2
gcc/config/aarch64/aarch64-tune.md
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@ -1,5 +1,5 @@
;; -*- buffer-read-only: t -*-
;; Generated automatically by gentune.sh from aarch64-cores.def
(define_attr "tune"
"cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,thunderxt81,thunderxt83,xgene1,falkor,qdf24xx,exynosm1,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55"
"cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,thunderxt81,thunderxt83,xgene1,falkor,qdf24xx,exynosm1,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55"
(const (symbol_ref "((enum attr_tune) aarch64_tune)")))

9
gcc/doc/invoke.texi
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@ -14665,18 +14665,19 @@ Specify the name of the target processor for which GCC should tune the
performance of the code. Permissible values for this option are:
@samp{generic}, @samp{cortex-a35}, @samp{cortex-a53}, @samp{cortex-a55},
@samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-a75},
@samp{exynos-m1}, @samp{falkor}, @samp{qdf24xx}, @samp{saphira},
@samp{xgene1}, @samp{vulcan}, @samp{thunderx},
@samp{cortex-a76}, @samp{exynos-m1}, @samp{falkor}, @samp{qdf24xx},
@samp{saphira}, @samp{xgene1}, @samp{vulcan}, @samp{thunderx},
@samp{thunderxt88}, @samp{thunderxt88p1}, @samp{thunderxt81},
@samp{thunderxt83}, @samp{thunderx2t99}, @samp{cortex-a57.cortex-a53},
@samp{cortex-a72.cortex-a53}, @samp{cortex-a73.cortex-a35},
@samp{cortex-a73.cortex-a53}, @samp{cortex-a75.cortex-a55},
@samp{cortex-a76.cortex-a55}
@samp{native}.
The values @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53},
@samp{cortex-a73.cortex-a35}, @samp{cortex-a73.cortex-a53},
@samp{cortex-a75.cortex-a55} specify that GCC should tune for a
big.LITTLE system.
@samp{cortex-a75.cortex-a55}, @samp{cortex-a76.cortex-a55} specify that GCC
should tune for a big.LITTLE system.
Additionally on native AArch64 GNU/Linux systems the value
@samp{native} tunes performance to the host system. This option has no effect