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authorMatthew Malcomson <matthew.malcomson@arm.com>2019-11-07 16:56:12 +0000
committerMatthew Malcomson <matthew.malcomson@arm.com>2019-11-07 16:56:12 +0000
commitaab2c27d9f01d667f1b3356fbca2d931bfa6c599 (patch)
treec777eac1b5c3bd0cb9d658f4f4f33386c97c2973 /opcodes/arm-dis.c
parent33593eafc92b6376a71bef49f5cebd6e09abd283 (diff)
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[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 'opcodes/arm-dis.c')
-rw-r--r--opcodes/arm-dis.c35
1 files changed, 30 insertions, 5 deletions
diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
index 85c5730..50ae957 100644
--- a/opcodes/arm-dis.c
+++ b/opcodes/arm-dis.c
@@ -396,6 +396,7 @@ struct opcode16
%% %
%c print condition code (always bits 28-31 in ARM mode)
+ %b print condition code allowing cp_num == 9
%q print shifter argument
%u print condition code (unconditional in ARM mode,
UNPREDICTABLE if not AL in Thumb)
@@ -1207,11 +1208,15 @@ static const struct sopcode32 coprocessor_opcodes[] =
{ANY, ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_3A),
0xfea00800, 0xffa00f10, "vcmla%c.f32\t%12-15,22V, %16-19,7V, %0-3,5D[0], #%20?21%20?780"},
+ /* BFloat16 instructions. */
+ {ANY, ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0x0eb30940, 0x0fbf0f50, "vcvt%7?tb%b.bf16.f32\t%y1, %y0"},
+
/* Dot Product instructions in the space of coprocessor 13. */
{ANY, ARM_FEATURE_COPROC (FPU_NEON_EXT_DOTPROD),
0xfc200d00, 0xffb00f00, "v%4?usdot.%4?us8\t%12-15,22V, %16-19,7V, %0-3,5V"},
{ANY, ARM_FEATURE_COPROC (FPU_NEON_EXT_DOTPROD),
- 0xfe000d00, 0xff000f00, "v%4?usdot.%4?us8\t%12-15,22V, %16-19,7V, %0-3D[%5?10]"},
+ 0xfe200d00, 0xff200f00, "v%4?usdot.%4?us8\t%12-15,22V, %16-19,7V, %0-3D[%5?10]"},
/* ARMv8.2 FMAC Long instructions in the space of coprocessor 8. */
{ANY, ARM_FEATURE_CORE_HIGH (ARM_EXT2_FP16_INST | ARM_EXT2_V8_2A),
@@ -1452,6 +1457,20 @@ static const struct opcode32 neon_opcodes[] =
{ARM_FEATURE_CORE_HIGH (ARM_EXT2_FP16_INST),
0xf2300c10, 0xffb00f10, "vfms%c.f16\t%12-15,22R, %16-19,7R, %0-3,5R"},
+ /* BFloat16 instructions. */
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0xfc000d00, 0xffb00f10, "vdot.bf16\t%12-15,22R, %16-19,7R, %0-3,5R"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0xfe000d00, 0xffb00f10, "vdot.bf16\t%12-15,22R, %16-19,7R, d%0-3d[%5d]"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0xfc000c40, 0xffb00f50, "vmmla.bf16\t%12-15,22R, %16-19,7R, %0-3,5R"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0xf3b60640, 0xffbf0fd0, "vcvt%c.bf16.f32\t%12-15,22D, %0-3,5Q"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0xfc300810, 0xffb00f10, "vfma%6?tb.bf16\t%12-15,22Q, %16-19,7Q, %0-3,5Q"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_BF16),
+ 0xfe300810, 0xffb00f10, "vfma%6?tb.bf16\t%12-15,22Q, %16-19,7Q, %0-2D[%3,5d]"},
+
/* Two registers, miscellaneous. */
{ARM_FEATURE_COPROC (FPU_NEON_EXT_ARMV8),
0xf3ba0400, 0xffbf0c10, "vrint%7-9?p?m?zaxn%u.f32\t%12-15,22R, %0-3,5R"},
@@ -8159,6 +8178,8 @@ print_insn_coprocessor_1 (const struct sopcode32 *opcodes,
if (cond != COND_UNCOND && cp_num == 9)
is_unpredictable = TRUE;
+ /* Fall through. */
+ case 'b':
func (stream, "%s", arm_conditional[cond]);
break;
@@ -8772,6 +8793,10 @@ print_insn_neon (struct disassemble_info *info, long given, bfd_boolean thumb)
}
else if ((given & 0xff000000) == 0xf9000000)
given ^= 0xf9000000 ^ 0xf4000000;
+ /* BFloat16 neon instructions without special top byte handling. */
+ else if ((given & 0xff000000) == 0xfe000000
+ || (given & 0xff000000) == 0xfc000000)
+ ;
/* vdup is also a valid neon instruction. */
else if ((given & 0xff910f5f) != 0xee800b10)
return FALSE;
@@ -11625,11 +11650,11 @@ select_arm_features (unsigned long mach,
case bfd_mach_arm_7EM: ARM_SET_FEATURES (ARM_ARCH_V7EM); break;
case bfd_mach_arm_8:
{
- /* Add bits for extensions that Armv8.5-A recognizes. */
- arm_feature_set armv8_5_ext_fset
+ /* Add bits for extensions that Armv8.6-A recognizes. */
+ arm_feature_set armv8_6_ext_fset
= ARM_FEATURE_CORE_HIGH (ARM_EXT2_FP16_INST);
- ARM_SET_FEATURES (ARM_ARCH_V8_5A);
- ARM_MERGE_FEATURE_SETS (arch_fset, arch_fset, armv8_5_ext_fset);
+ ARM_SET_FEATURES (ARM_ARCH_V8_6A);
+ ARM_MERGE_FEATURE_SETS (arch_fset, arch_fset, armv8_6_ext_fset);
break;
}
case bfd_mach_arm_8R: ARM_SET_FEATURES (ARM_ARCH_V8R); break;