Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-12-16 Thread Matthew Wahab 

On 10/12/15 11:02, Ramana Radhakrishnan wrote:

On Thu, Dec 10, 2015 at 10:43 AM, Ramana Radhakrishnan
 wrote:

On Mon, Dec 7, 2015 at 4:04 PM, Matthew Wahab
 wrote:

Ping. Updated patch attached.
Matthew


On 26/11/15 15:55, Matthew Wahab wrote:


Hello,


ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
ARMv8.1 and for the new instructions, enabling the architecture with
--march=armv8.1-a. The new instructions are enabled when both ARMv8.1
and a suitable fpu options are set, for instance with -march=armv8.1-a
-mfpu=neon-fp-armv8 -mfloat-abi=hard.


[..]

gcc/
2015-11-26  Matthew Wahab  

  * config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
  * config/arm/arm-protos.h (FL2_ARCH8_1): New.
  (FL2_FOR_ARCH8_1A): New.
  * config/arm/arm-tables.opt: Regenerate.
  * config/arm/arm.c (arm_arch8_1): New.
  (arm_option_override): Set arm_arch8_1.
  * config/arm/arm.h (TARGET_NEON_RDMA): New.
  (arm_arch8_1): Declare.
  * doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
  "armv8.1-a+crc".
  (ARM Options, -mfpu): Fix a typo.





OK.


I couldn't find 0/7 but in addition here you need to update the output
for TAG_FP_SIMD_Arch to be 4.

regards
Ramana


After discussing this offline, it turns out that the relevant attribute 
(Tag_Advanced_SIMD_arch) is set by the assembler.


Matthew

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-12-16 Thread Ramana Radhakrishnan 

>>
>> I couldn't find 0/7 but in addition here you need to update the output
>> for TAG_FP_SIMD_Arch to be 4.
>>
>> regards
>> Ramana
> 
> After discussing this offline, it turns out that the relevant attribute 
> (Tag_Advanced_SIMD_arch) is set by the assembler.

Yep - sorry about the noise.

The patch set is OK with the changes suggested.

Ramana

> 
> Matthew
> 
> 
> 
>

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-12-10 Thread Ramana Radhakrishnan 
On Mon, Dec 7, 2015 at 4:04 PM, Matthew Wahab
 wrote:
> Ping. Updated patch attached.
> Matthew
>
>
> On 26/11/15 15:55, Matthew Wahab wrote:
>>
>> Hello,
>>
>>
>> ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
>> instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
>> ARMv8.1 and for the new instructions, enabling the architecture with
>> --march=armv8.1-a. The new instructions are enabled when both ARMv8.1
>> and a suitable fpu options are set, for instance with -march=armv8.1-a
>> -mfpu=neon-fp-armv8 -mfloat-abi=hard.
>>
>> This patch set adds the command line options and internal feature
>> macros. Following patches
>> - enable multilib support for ARMv8.1,
>> - add patterns for the new instructions,
>> - add the ACLE feature macro for the ARMv8.1 extensions,
>> - extend target support in the testsuite to ARMv8.1,
>> - add the ACLE intrinsics for vqrmdl{as}h and
>> - add the ACLE intrinsics for vqrmdl{as}h_lane.
>>
>> Tested the series for arm-none-eabi with cross-compiled check-gcc on an
>> ARMv8.1 emulator. Also tested arm-none-linux-gnueabihf with native
>> bootstrap and make check.
>>
>> Is this ok for trunk?
>> Matthew
>>
>> gcc/
>> 2015-11-26  Matthew Wahab  
>>
>>  * config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
>>  * config/arm/arm-protos.h (FL2_ARCH8_1): New.
>>  (FL2_FOR_ARCH8_1A): New.
>>  * config/arm/arm-tables.opt: Regenerate.
>>  * config/arm/arm.c (arm_arch8_1): New.
>>  (arm_option_override): Set arm_arch8_1.
>>  * config/arm/arm.h (TARGET_NEON_RDMA): New.
>>  (arm_arch8_1): Declare.
>>  * doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
>>  "armv8.1-a+crc".
>>  (ARM Options, -mfpu): Fix a typo.
>
>

OK.

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-12-10 Thread Ramana Radhakrishnan 
On Thu, Dec 10, 2015 at 10:43 AM, Ramana Radhakrishnan
 wrote:
> On Mon, Dec 7, 2015 at 4:04 PM, Matthew Wahab
>  wrote:
>> Ping. Updated patch attached.
>> Matthew
>>
>>
>> On 26/11/15 15:55, Matthew Wahab wrote:
>>>
>>> Hello,
>>>
>>>
>>> ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
>>> instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
>>> ARMv8.1 and for the new instructions, enabling the architecture with
>>> --march=armv8.1-a. The new instructions are enabled when both ARMv8.1
>>> and a suitable fpu options are set, for instance with -march=armv8.1-a
>>> -mfpu=neon-fp-armv8 -mfloat-abi=hard.
>>>
>>> This patch set adds the command line options and internal feature
>>> macros. Following patches
>>> - enable multilib support for ARMv8.1,
>>> - add patterns for the new instructions,
>>> - add the ACLE feature macro for the ARMv8.1 extensions,
>>> - extend target support in the testsuite to ARMv8.1,
>>> - add the ACLE intrinsics for vqrmdl{as}h and
>>> - add the ACLE intrinsics for vqrmdl{as}h_lane.
>>>
>>> Tested the series for arm-none-eabi with cross-compiled check-gcc on an
>>> ARMv8.1 emulator. Also tested arm-none-linux-gnueabihf with native
>>> bootstrap and make check.
>>>
>>> Is this ok for trunk?
>>> Matthew
>>>
>>> gcc/
>>> 2015-11-26  Matthew Wahab  
>>>
>>>  * config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
>>>  * config/arm/arm-protos.h (FL2_ARCH8_1): New.
>>>  (FL2_FOR_ARCH8_1A): New.
>>>  * config/arm/arm-tables.opt: Regenerate.
>>>  * config/arm/arm.c (arm_arch8_1): New.
>>>  (arm_option_override): Set arm_arch8_1.
>>>  * config/arm/arm.h (TARGET_NEON_RDMA): New.
>>>  (arm_arch8_1): Declare.
>>>  * doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
>>>  "armv8.1-a+crc".
>>>  (ARM Options, -mfpu): Fix a typo.
>>
>>
>
> OK.

I couldn't find 0/7 but in addition here you need to update the output
for TAG_FP_SIMD_Arch to be 4.

regards
Ramana

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-12-07 Thread Matthew Wahab 

Ping. Updated patch attached.
Matthew

On 26/11/15 15:55, Matthew Wahab wrote:

Hello,


ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
ARMv8.1 and for the new instructions, enabling the architecture with
--march=armv8.1-a. The new instructions are enabled when both ARMv8.1
and a suitable fpu options are set, for instance with -march=armv8.1-a
-mfpu=neon-fp-armv8 -mfloat-abi=hard.

This patch set adds the command line options and internal feature
macros. Following patches
- enable multilib support for ARMv8.1,
- add patterns for the new instructions,
- add the ACLE feature macro for the ARMv8.1 extensions,
- extend target support in the testsuite to ARMv8.1,
- add the ACLE intrinsics for vqrmdl{as}h and
- add the ACLE intrinsics for vqrmdl{as}h_lane.

Tested the series for arm-none-eabi with cross-compiled check-gcc on an
ARMv8.1 emulator. Also tested arm-none-linux-gnueabihf with native
bootstrap and make check.

Is this ok for trunk?
Matthew

gcc/
2015-11-26  Matthew Wahab  

 * config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
 * config/arm/arm-protos.h (FL2_ARCH8_1): New.
 (FL2_FOR_ARCH8_1A): New.
 * config/arm/arm-tables.opt: Regenerate.
 * config/arm/arm.c (arm_arch8_1): New.
 (arm_option_override): Set arm_arch8_1.
 * config/arm/arm.h (TARGET_NEON_RDMA): New.
 (arm_arch8_1): Declare.
 * doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
 "armv8.1-a+crc".
 (ARM Options, -mfpu): Fix a typo.


>From 65bcf9a875fd31f6201e64cbbd4fdfb0b8f4719e Mon Sep 17 00:00:00 2001
From: Matthew Wahab 
Date: Tue, 1 Sep 2015 11:31:25 +0100
Subject: [PATCH 1/7] [ARM] Add ARMv8.1 architecture flags and options.

Change-Id: I6bb0c7f020613a1a17e40bccc28b00c30d644c70
---
 gcc/config/arm/arm-arches.def |  5 +
 gcc/config/arm/arm-protos.h   |  3 +++
 gcc/config/arm/arm-tables.opt | 10 --
 gcc/config/arm/arm.c  |  4 
 gcc/config/arm/arm.h  |  6 ++
 gcc/doc/invoke.texi   |  6 +++---
 6 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/gcc/config/arm/arm-arches.def b/gcc/config/arm/arm-arches.def
index ddf6c3c..6c83153 100644
--- a/gcc/config/arm/arm-arches.def
+++ b/gcc/config/arm/arm-arches.def
@@ -57,6 +57,11 @@ ARM_ARCH("armv7-m", cortexm3,	7M,	ARM_FSET_MAKE_CPU1 (FL_CO_PROC |	  FL_FOR_
 ARM_ARCH("armv7e-m", cortexm4,  7EM,	ARM_FSET_MAKE_CPU1 (FL_CO_PROC |	  FL_FOR_ARCH7EM))
 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_ARCH ("armv8.1-a+crc",cortexa53, 8A,
+	  ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
+			 FL2_FOR_ARCH8_1A))
 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/arm-protos.h b/gcc/config/arm/arm-protos.h
index e7328e7..d649e86 100644
--- a/gcc/config/arm/arm-protos.h
+++ b/gcc/config/arm/arm-protos.h
@@ -387,6 +387,8 @@ extern bool arm_is_constant_pool_ref (rtx);
 #define FL_IWMMXT2(1 << 30)   /* "Intel Wireless MMX2 technology".  */
 #define FL_ARCH6KZ(1 << 31)   /* ARMv6KZ architecture.  */
 
+#define FL2_ARCH8_1   (1 << 0)	  /* Architecture 8.1.  */
+
 /* Flags that only effect tuning, not available instructions.  */
 #define FL_TUNE		(FL_WBUF | FL_VFPV2 | FL_STRONG | FL_LDSCHED \
 			 | FL_CO_PROC)
@@ -415,6 +417,7 @@ extern bool arm_is_constant_pool_ref (rtx);
 #define FL_FOR_ARCH7M	(FL_FOR_ARCH7 | FL_THUMB_DIV)
 #define FL_FOR_ARCH7EM  (FL_FOR_ARCH7M | FL_ARCH7EM)
 #define FL_FOR_ARCH8A	(FL_FOR_ARCH7VE | FL_ARCH8)
+#define FL2_FOR_ARCH8_1A	FL2_ARCH8_1
 
 /* There are too many feature bits to fit in a single word so the set of cpu and
fpu capabilities is a structure.  A feature set is created and manipulated
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
index 48aac41..db17f6e 100644
--- a/gcc/config/arm/arm-tables.opt
+++ b/gcc/config/arm/arm-tables.opt
@@ -416,10 +416,16 @@ EnumValue
 Enum(arm_arch) String(armv8-a+crc) Value(26)
 
 EnumValue
-Enum(arm_arch) String(iwmmxt) Value(27)
+Enum(arm_arch) String(armv8.1-a) Value(27)
 
 EnumValue
-Enum(arm_arch) String(iwmmxt2) Value(28)
+Enum(arm_arch) String(armv8.1-a+crc) Value(28)
+
+EnumValue
+Enum(arm_arch) String(iwmmxt) Value(29)
+
+EnumValue
+Enum(arm_arch) String(iwmmxt2) Value(30)
 
 Enum
 Name(arm_fpu) Type(int)
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 3588b83..f89411e 100644
--- a/gcc/config/arm/arm.c
+++

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-11-27 Thread Matthew Wahab 

On 27/11/15 14:05, Christophe Lyon wrote:

On 26 November 2015 at 16:55, Matthew Wahab  wrote:



ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
ARMv8.1 and for the new instructions, enabling the architecture with
--march=armv8.1-a. The new instructions are enabled when both ARMv8.1
and a suitable fpu options are set, for instance with -march=armv8.1-a
-mfpu=neon-fp-armv8 -mfloat-abi=hard.

This patch set adds the command line options and internal feature
macros. Following patches
- enable multilib support for ARMv8.1,
- add patterns for the new instructions,
- add the ACLE feature macro for the ARMv8.1 extensions,
- extend target support in the testsuite to ARMv8.1,
- add the ACLE intrinsics for vqrmdl{as}h and
- add the ACLE intrinsics for vqrmdl{as}h_lane.





The whole series LGTM, but do you plan to add tests for the new intrinsics?


The Adv.SIMD intrinsics tests are in gcc.target/aarch64/advsimd-intrinsics, they get 
run for both AArch64 and ARM backends. The tests for the new intrinsics were added 
(yesterday) by the AArch64 version of this patch.


Matthew

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-11-27 Thread Christophe Lyon 
On 27 November 2015 at 18:05, Matthew Wahab  wrote:
> On 27/11/15 14:05, Christophe Lyon wrote:
>>
>> On 26 November 2015 at 16:55, Matthew Wahab 
>> wrote:
>
>
>>> ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
>>> instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
>>> ARMv8.1 and for the new instructions, enabling the architecture with
>>> --march=armv8.1-a. The new instructions are enabled when both ARMv8.1
>>> and a suitable fpu options are set, for instance with -march=armv8.1-a
>>> -mfpu=neon-fp-armv8 -mfloat-abi=hard.
>>>
>>> This patch set adds the command line options and internal feature
>>> macros. Following patches
>>> - enable multilib support for ARMv8.1,
>>> - add patterns for the new instructions,
>>> - add the ACLE feature macro for the ARMv8.1 extensions,
>>> - extend target support in the testsuite to ARMv8.1,
>>> - add the ACLE intrinsics for vqrmdl{as}h and
>>> - add the ACLE intrinsics for vqrmdl{as}h_lane.
>>>
>
>>
>> The whole series LGTM, but do you plan to add tests for the new
>> intrinsics?
>
>
> The Adv.SIMD intrinsics tests are in gcc.target/aarch64/advsimd-intrinsics,
> they get run for both AArch64 and ARM backends. The tests for the new
> intrinsics were added (yesterday) by the AArch64 version of this patch.
>

Ha yes, of course.

> Matthew

Re: [PATCH 1/7][ARM] Add support for ARMv8.1.

2015-11-27 Thread Christophe Lyon 
On 26 November 2015 at 16:55, Matthew Wahab  wrote:
> Hello,
>
>
> ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
> instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
> ARMv8.1 and for the new instructions, enabling the architecture with
> --march=armv8.1-a. The new instructions are enabled when both ARMv8.1
> and a suitable fpu options are set, for instance with -march=armv8.1-a
> -mfpu=neon-fp-armv8 -mfloat-abi=hard.
>
> This patch set adds the command line options and internal feature
> macros. Following patches
> - enable multilib support for ARMv8.1,
> - add patterns for the new instructions,
> - add the ACLE feature macro for the ARMv8.1 extensions,
> - extend target support in the testsuite to ARMv8.1,
> - add the ACLE intrinsics for vqrmdl{as}h and
> - add the ACLE intrinsics for vqrmdl{as}h_lane.
>
> Tested the series for arm-none-eabi with cross-compiled check-gcc on an
> ARMv8.1 emulator. Also tested arm-none-linux-gnueabihf with native
> bootstrap and make check.
>
> Is this ok for trunk?
> Matthew
>
Hi,

The whole series LGTM, but do you plan to add tests for the new intrinsics?

Thanks,

Christophe.


> gcc/
> 2015-11-26  Matthew Wahab  
>
> * config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
> * config/arm/arm-protos.h (FL2_ARCH8_1): New.
> (FL2_FOR_ARCH8_1A): New.
> * config/arm/arm-tables.opt: Regenerate.
> * config/arm/arm.c (arm_arch8_1): New.
> (arm_option_override): Set arm_arch8_1.
> * config/arm/arm.h (TARGET_NEON_RDMA): New.
> (arm_arch8_1): Declare.
> * doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
> "armv8.1-a+crc".
> (ARM Options, -mfpu): Fix a typo.

[PATCH 1/7][ARM] Add support for ARMv8.1.

2015-11-26 Thread Matthew Wahab 

Hello,


ARMv8.1 includes an extension to ARM which adds two Adv.SIMD
instructions, vqrdmlah and vqrdmlsh. This patch set adds support for
ARMv8.1 and for the new instructions, enabling the architecture with
--march=armv8.1-a. The new instructions are enabled when both ARMv8.1
and a suitable fpu options are set, for instance with -march=armv8.1-a
-mfpu=neon-fp-armv8 -mfloat-abi=hard.

This patch set adds the command line options and internal feature
macros. Following patches
- enable multilib support for ARMv8.1,
- add patterns for the new instructions,
- add the ACLE feature macro for the ARMv8.1 extensions,
- extend target support in the testsuite to ARMv8.1,
- add the ACLE intrinsics for vqrmdl{as}h and
- add the ACLE intrinsics for vqrmdl{as}h_lane.

Tested the series for arm-none-eabi with cross-compiled check-gcc on an
ARMv8.1 emulator. Also tested arm-none-linux-gnueabihf with native
bootstrap and make check.

Is this ok for trunk?
Matthew

gcc/
2015-11-26  Matthew Wahab  

* config/arm/arm-arches.def: Add "armv8.1-a" and "armv8.1-a+crc".
* config/arm/arm-protos.h (FL2_ARCH8_1): New.
(FL2_FOR_ARCH8_1A): New.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/arm.c (arm_arch8_1): New.
(arm_option_override): Set arm_arch8_1.
* config/arm/arm.h (TARGET_NEON_RDMA): New.
(arm_arch8_1): Declare.
* doc/invoke.texi (ARM Options, -march): Add "armv8.1-a" and
"armv8.1-a+crc".
(ARM Options, -mfpu): Fix a typo.
>From 3ee3a16839c1c316906e33f5384da05ee70dd831 Mon Sep 17 00:00:00 2001
From: Matthew Wahab 
Date: Tue, 1 Sep 2015 11:31:25 +0100
Subject: [PATCH 1/7] [ARM] Add ARMv8.1 architecture flags and options.

Change-Id: I6bb0c7f020613a1a17e40bccc28b00c30d644c70
---
 gcc/config/arm/arm-arches.def |  5 +
 gcc/config/arm/arm-protos.h   |  3 +++
 gcc/config/arm/arm-tables.opt | 10 --
 gcc/config/arm/arm.c  |  4 
 gcc/config/arm/arm.h  |  6 ++
 gcc/doc/invoke.texi   |  6 +++---
 6 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/gcc/config/arm/arm-arches.def b/gcc/config/arm/arm-arches.def
index ddf6c3c..6c83153 100644
--- a/gcc/config/arm/arm-arches.def
+++ b/gcc/config/arm/arm-arches.def
@@ -57,6 +57,11 @@ ARM_ARCH("armv7-m", cortexm3,	7M,	ARM_FSET_MAKE_CPU1 (FL_CO_PROC |	  FL_FOR_
 ARM_ARCH("armv7e-m", cortexm4,  7EM,	ARM_FSET_MAKE_CPU1 (FL_CO_PROC |	  FL_FOR_ARCH7EM))
 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_ARCH ("armv8.1-a+crc",cortexa53, 8A,
+	  ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
+			 FL2_FOR_ARCH8_1A))
 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/arm-protos.h b/gcc/config/arm/arm-protos.h
index e4b8fb3..c3eb6d3 100644
--- a/gcc/config/arm/arm-protos.h
+++ b/gcc/config/arm/arm-protos.h
@@ -388,6 +388,8 @@ extern bool arm_is_constant_pool_ref (rtx);
 #define FL_IWMMXT2(1 << 30)   /* "Intel Wireless MMX2 technology".  */
 #define FL_ARCH6KZ(1 << 31)   /* ARMv6KZ architecture.  */
 
+#define FL2_ARCH8_1   (1 << 0)	  /* Architecture 8.1.  */
+
 /* Flags that only effect tuning, not available instructions.  */
 #define FL_TUNE		(FL_WBUF | FL_VFPV2 | FL_STRONG | FL_LDSCHED \
 			 | FL_CO_PROC)
@@ -416,6 +418,7 @@ extern bool arm_is_constant_pool_ref (rtx);
 #define FL_FOR_ARCH7M	(FL_FOR_ARCH7 | FL_THUMB_DIV)
 #define FL_FOR_ARCH7EM  (FL_FOR_ARCH7M | FL_ARCH7EM)
 #define FL_FOR_ARCH8A	(FL_FOR_ARCH7VE | FL_ARCH8)
+#define FL2_FOR_ARCH8_1A	FL2_ARCH8_1
 
 /* There are too many feature bits to fit in a single word so the set of cpu and
fpu capabilities is a structure.  A feature set is created and manipulated
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
index 48aac41..db17f6e 100644
--- a/gcc/config/arm/arm-tables.opt
+++ b/gcc/config/arm/arm-tables.opt
@@ -416,10 +416,16 @@ EnumValue
 Enum(arm_arch) String(armv8-a+crc) Value(26)
 
 EnumValue
-Enum(arm_arch) String(iwmmxt) Value(27)
+Enum(arm_arch) String(armv8.1-a) Value(27)
 
 EnumValue
-Enum(arm_arch) String(iwmmxt2) Value(28)
+Enum(arm_arch) String(armv8.1-a+crc) Value(28)
+
+EnumValue
+Enum(arm_arch) String(iwmmxt) Value(29)
+
+EnumValue
+Enum(arm_arch) String(iwmmxt2) Value(30)
 
 Enum
 Name(arm_fpu) Type(int)
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index e0cdc20..8cbf364 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -817,6 +817,9 @@ int arm_arch7em =