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Re: [ARM] Add ARMv8.3 VCMLA and VCADD instructions
- From: "Jan Beulich" <JBeulich at suse dot com>
- To: "Szabolcs Nagy" <szabolcs dot nagy at arm dot com>
- Cc: <nd at arm dot com>,"Binutils" <binutils at sourceware dot org>
- Date: Thu, 12 Jan 2017 02:49:00 -0700
- Subject: Re: [ARM] Add ARMv8.3 VCMLA and VCADD instructions
- Authentication-results: sourceware.org; auth=none
- References: <584564BF.7050507@arm.com>
>>> On 05.12.16 at 13:59, <szabolcs.nagy@arm.com> wrote:
> opcodes/
> 2016-12-05 Szabolcs Nagy <szabolcs.nagy@arm.com>
>
> * arm-dis.c (coprocessor_opcodes): Add vcmla and vcadd.
> (print_insn_coprocessor): Add 'V' format for neon D or Q regs.
This set of patterns
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_3A),
+ 0xfe000800, 0xfea00f10, "vcmla%c.f16\t%12-15,22V, %16-19,7V, %0-3D[%5?10], #%20'90"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_3A),
+ 0xfe200800, 0xfea00f10, "vcmla%c.f16\t%12-15,22V, %16-19,7V, %0-3D[%5?10], #%20?21%23?780"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_3A),
+ 0xfe800800, 0xfea00f10, "vcmla%c.f32\t%12-15,22V, %16-19,7V, %0-3,5D[0], #%20'90"},
+ {ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_3A),
+ 0xfea00800, 0xfea00f10, "vcmla%c.f32\t%12-15,22V, %16-19,7V, %0-3,5D[0], #%20?21%23?780"},
suggests that bit 24 is not being decoded as part of the opcode,
yet I also can't seem to figure an operand it affects. Should the
masks perhaps have bit 24 set, or is it really ignored?
Jan