diff options
| author | Matthew Malcomson <matthew.malcomson@arm.com> | 2019-11-07 16:56:12 +0000 |
|---|---|---|
| committer | Matthew Malcomson <matthew.malcomson@arm.com> | 2019-11-07 16:56:12 +0000 |
| commit | aab2c27d9f01d667f1b3356fbca2d931bfa6c599 (patch) | |
| tree | c777eac1b5c3bd0cb9d658f4f4f33386c97c2973 /gas/doc | |
| parent | 33593eafc92b6376a71bef49f5cebd6e09abd283 (diff) | |
| download | gdb-aab2c27d9f01d667f1b3356fbca2d931bfa6c599.zip gdb-aab2c27d9f01d667f1b3356fbca2d931bfa6c599.tar.gz gdb-aab2c27d9f01d667f1b3356fbca2d931bfa6c599.tar.bz2 | |
[binutils][arm] BFloat16 enablement [4/X]
Hi,
This patch is part of a series that adds support for Armv8.6-A
(Matrix Multiply and BFloat16 extensions) to binutils.
This patch introduces BFloat16 instructions to the arm backend.
The following BFloat16 instructions are added: vdot, vfma{l/t},
vmmla, vfmal{t/b}, vcvt, vcvt{t/b}.
gas/ChangeLog:
2019-11-07 Mihail Ionescu <mihail.ionescu@arm.com>
2019-11-07 Matthew Malcomson <matthew.malcomson@arm.com>
* config/tc-arm.c (arm_archs): Add armv8.6-a option.
(cpu_arch_ver): Add TAG_CPU_ARCH_V8 tag for Armv8.6-a.
* doc/c-arm.texi (-march): New armv8.6-a arch.
* config/tc-arm.c (arm_ext_bf16): New feature set.
(enum neon_el_type): Add NT_bfloat value.
(B_MNEM_vfmat, B_MNEM_vfmab): New bfloat16 encoder
helpers.
(BAD_BF16): New message.
(parse_neon_type): Add bf16 type specifier.
(enum neon_type_mask): Add N_BF16 type.
(type_chk_of_el_type): Account for NT_bfloat.
(el_type_of_type_chk): Account for N_BF16.
(neon_three_args): Split out from neon_three_same.
(neon_three_same): Part split out into neon_three_args.
(CVT_FLAVOUR_VAR): Add bf16_f32 cvt flavour.
(do_neon_cvt_1): Account for vcvt.bf16.f32.
(do_bfloat_vmla): New.
(do_mve_vfma): New function to deal with the mnemonic clash between the BF16
vfmat and the MVE vfma in a VPT block with a 't'rue condition.
(do_neon_cvttb_1): Account for vcvt{t,b}.bf16.f32.
(do_vdot): New
(do_vmmla): New
(insns): Add vdot and vmmla mnemonics.
(arm_extensions): Add "bf16" extension.
* doc/c-arm.texi: Document "bf16" extension.
* testsuite/gas/arm/attr-march-armv8_6-a.d: New test.
* testsuite/gas/arm/bfloat16-bad.d: New test.
* testsuite/gas/arm/bfloat16-bad.l: New test.
* testsuite/gas/arm/bfloat16-bad.s: New test.
* testsuite/gas/arm/bfloat16-cmdline-bad-2.d: New test.
* testsuite/gas/arm/bfloat16-cmdline-bad-3.d: New test.
* testsuite/gas/arm/bfloat16-cmdline-bad.d: New test.
* testsuite/gas/arm/bfloat16-neon.s: New test.
* testsuite/gas/arm/bfloat16-non-neon.s: New test.
* testsuite/gas/arm/bfloat16-thumb-bad.d: New test.
* testsuite/gas/arm/bfloat16-thumb-bad.l: New test.
* testsuite/gas/arm/bfloat16-thumb.d: New test.
* testsuite/gas/arm/bfloat16-vfp.d: New test.
* testsuite/gas/arm/bfloat16.d: New test.
* testsuite/gas/arm/bfloat16.s: New test.
include/ChangeLog:
2019-11-07 Mihail Ionescu <mihail.ionescu@arm.com>
2019-11-07 Matthew Malcomson <matthew.malcomson@arm.com>
* opcode/arm.h (ARM_EXT2_V8_6A, ARM_AEXT2_V8_6A,
ARM_ARCH_V8_6A): New.
* opcode/arm.h (ARM_EXT2_BF16): New feature macro.
(ARM_AEXT2_V8_6A): Include above macro in definition.
opcodes/ChangeLog:
2019-11-07 Mihail Ionescu <mihail.ionescu@arm.com>
2019-11-07 Matthew Malcomson <matthew.malcomson@arm.com>
* arm-dis.c (select_arm_features): Update bfd_march_arm_8 with
Armv8.6-A.
(coprocessor_opcodes): Add bfloat16 vcvt{t,b}.
(neon_opcodes): Add bfloat SIMD instructions.
(print_insn_coprocessor): Add new control character %b to print
condition code without checking cp_num.
(print_insn_neon): Account for BFloat16 instructions that have no
special top-byte handling.
Regression tested on arm-none-eabi.
Is it ok for trunk?
Regards,
Mihail
Diffstat (limited to 'gas/doc')
| -rw-r--r-- | gas/doc/c-arm.texi | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi index 175de8e..8afee70 100644 --- a/gas/doc/c-arm.texi +++ b/gas/doc/c-arm.texi @@ -180,6 +180,7 @@ been added, again in ascending alphabetical order. For example, The following extensions are currently supported: +@code{bf16} (BFloat16 extensions for v8.6-A architecture), @code{crc} @code{crypto} (Cryptography Extensions for v8-A architecture, implies @code{fp+simd}), @code{dotprod} (Dot Product Extensions for v8.2-A architecture, implies @code{fp+simd}), @@ -254,6 +255,7 @@ names are recognized: @code{armv8-m.base}, @code{armv8-m.main}, @code{armv8.1-m.main}, +@code{armv8.6-a}, @code{iwmmxt}, @code{iwmmxt2} and |