On 17/05/16 15:22, Matthew Wahab wrote:
> This patch adds the command options for the architecture ARMv8.2-A and
> the half-precision extension. The architecture is selected by
> -march=armv8.2-a and has all the properties of -march=armv8.1-a.
>
> This patch also enables the CRC extension (+crc) which is required
> for both ARMv8.2-A and ARMv8.1-A architectures but is not currently
> enabled by default for -march=armv8.1-a.
>
> The half-precision extension is selected using the extension +fp16. This
> enables the VFP FP16 instructions if an ARMv8 VFP unit is also
> specified, e.g. by -mfpu=fp-armv8. It also enables the FP16 NEON
> instructions if an ARMv8 NEON unit is specified, e.g. by
> -mfpu=neon-fp-armv8. Note that if the NEON FP16 instructions are enabled
> then so are the VFP FP16 instructions.
This a minor respin that moves the setting of arm_fp16_inst in
arm_option_override to immediately before it is used to set the required
arm_fp16_format.
Tested the series for arm-none-linux-gnueabihf with native bootstrap and
make check and for arm-none-eabi and armeb-none-eabi with make check on
an ARMv8.2-A emulator.
2016-07-04 Matthew Wahab
* config/arm/arm-arches.def ("armv8.1-a"): Add FL_CRC32.
("armv8.2-a"): New.
("armv8.2-a+fp16"): New.
* config/arm/arm-protos.h (FL2_ARCH8_2): New.
(FL2_FP16INST): New.
(FL2_FOR_ARCH8_2A): New.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/arm.c (arm_arch8_2): New.
(arm_fp16_inst): New.
(arm_option_override): Set arm_arch8_2 and arm_fp16_inst. Check
for incompatible fp16-format settings.
* config/arm/arm.h (TARGET_VFP_FP16INST): New.
(TARGET_NEON_FP16INST): New.
(arm_arch8_2): Declare.
(arm_fp16_inst): Declare.
* config/arm/bpabi.h (BE8_LINK_SPEC): Add entries for
march=armv8.2-a and march=armv8.2-a+fp16.
* config/arm/t-aprofile (Arch Matches): Add entries for armv8.2-a
and armv8.2-a+fp16.
* doc/invoke.texi (ARM Options): Add "-march=armv8.1-a",
"-march=armv8.2-a" and "-march=armv8.2-a+fp16".
>From e165b4e8bc4338608ff9505a7fd1a26d8a996b0a Mon Sep 17 00:00:00 2001
From: Matthew Wahab
Date: Thu, 7 Apr 2016 13:31:24 +0100
Subject: [PATCH 01/17] [PATCH 1/17][ARM] Add ARMv8.2-A command line option and
profile.
2016-07-04 Matthew Wahab
* config/arm/arm-arches.def ("armv8.1-a"): Add FL_CRC32.
("armv8.2-a"): New.
("armv8.2-a+fp16"): New.
* config/arm/arm-protos.h (FL2_ARCH8_2): New.
(FL2_FP16INST): New.
(FL2_FOR_ARCH8_2A): New.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/arm.c (arm_arch8_2): New.
(arm_fp16_inst): New.
(arm_option_override): Set arm_arch8_2 and arm_fp16_inst. Check
for incompatible fp16-format settings.
* config/arm/arm.h (TARGET_VFP_FP16INST): New.
(TARGET_NEON_FP16INST): New.
(arm_arch8_2): Declare.
(arm_fp16_inst): Declare.
* config/arm/bpabi.h (BE8_LINK_SPEC): Add entries for
march=armv8.2-a and march=armv8.2-a+fp16.
* config/arm/t-aprofile (Arch Matches): Add entries for armv8.2-a
and armv8.2-a+fp16.
* doc/invoke.texi (ARM Options): Add "-march=armv8.1-a",
"-march=armv8.2-a" and "-march=armv8.2-a+fp16".
---
gcc/config/arm/arm-arches.def | 10 --
gcc/config/arm/arm-protos.h | 4
gcc/config/arm/arm-tables.opt | 10 --
gcc/config/arm/arm.c | 15 +++
gcc/config/arm/arm.h | 14 ++
gcc/config/arm/bpabi.h| 4
gcc/config/arm/t-aprofile | 2 ++
gcc/doc/invoke.texi | 13 +
8 files changed, 68 insertions(+), 4 deletions(-)
diff --git a/gcc/config/arm/arm-arches.def b/gcc/config/arm/arm-arches.def
index fd02b18..2b4a80e 100644
--- a/gcc/config/arm/arm-arches.def
+++ b/gcc/config/arm/arm-arches.def
@@ -58,10 +58,16 @@ ARM_ARCH("armv7e-m", cortexm4, 7EM, ARM_FSET_MAKE_CPU1 (FL_CO_PROC | FL_F
ARM_ARCH("armv8-a", cortexa53, 8A, ARM_FSET_MAKE_CPU1 (FL_CO_PROC | FL_FOR_ARCH8A))
ARM_ARCH("armv8-a+crc",cortexa53, 8A, ARM_FSET_MAKE_CPU1 (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A))
ARM_ARCH("armv8.1-a", cortexa53, 8A,
- ARM_FSET_MAKE (FL_CO_PROC | FL_FOR_ARCH8A, FL2_FOR_ARCH8_1A))
+ ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
+ FL2_FOR_ARCH8_1A))
ARM_ARCH("armv8.1-a+crc",cortexa53, 8A,
ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
FL2_FOR_ARCH8_1A))
+ARM_ARCH ("armv8.2-a", cortexa53, 8A,
+ ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
+ FL2_FOR_ARCH8_2A))
+ARM_ARCH ("armv8.2-a+fp16", cortexa53, 8A,
+ ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
+ FL2_FOR_ARCH8_2A | FL2_FP16INST))
ARM_ARCH("iwmmxt", iwmmxt, 5TE, ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_STRONG | FL_FOR_ARCH5TE | FL_XSCALE | FL_IWMMXT))
ARM_ARCH("iwmmxt2", iwmmxt2,5TE, ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_STRONG | FL_FOR_ARCH5TE | FL_XSCALE | FL_IWMMXT | FL_IWMMXT2))
-
diff --git a/gcc/config/arm/
