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Re: [Qemu-riscv] [Qemu-devel] [PATCH v2 17/17] RISC-V: add vector extens
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-riscv] [Qemu-devel] [PATCH v2 17/17] RISC-V: add vector extension premutation instructions |
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Date: |
Thu, 12 Sep 2019 13:13:21 -0400 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 9/11/19 2:25 AM, liuzhiwei wrote:
> +/* vfmv.f.s rd, vs2 # rd = vs2[0] (rs1=0) */
> +void VECTOR_HELPER(vfmv_f_s)(CPURISCVState *env, uint32_t rs1, uint32_t rs2,
> + uint32_t rd)
...
> +/* vmv.s.x vd, rs1 # vd[0] = rs1 */
> +void VECTOR_HELPER(vmv_s_x)(CPURISCVState *env, uint32_t rs1, uint32_t rs2,
> + uint32_t rd)
...
> +/* vfmv.s.f vd, rs1 # vd[0] = rs1 (vs2 = 0) */
> +void VECTOR_HELPER(vfmv_s_f)(CPURISCVState *env, uint32_t rs1,
> + uint32_t rs2, uint32_t rd)
I'll note that, with the vector parameters known to the translator, as I have
advocated, these operations are trivially expanded inline as one or two tcg
operations.
r~
- Re: [Qemu-riscv] [Qemu-devel] [PATCH v2 09/17] RISC-V: add vector extension integer instructions part2, bit/shift, (continued)
- [Qemu-riscv] [PATCH v2 10/17] RISC-V: add vector extension integer instructions part3, cmp/min/max, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 05/17] RISC-V: add vector extension load and store instructions, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 08/17] RISC-V: add vector extension integer instructions part1, add/sub/adc/sbc, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 16/17] RISC-V: add vector extension mask instructions, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 17/17] RISC-V: add vector extension premutation instructions, liuzhiwei, 2019/09/11
- Re: [Qemu-riscv] [Qemu-devel] [PATCH v2 17/17] RISC-V: add vector extension premutation instructions,
Richard Henderson <=
- [Qemu-riscv] [PATCH v2 15/17] RISC-V: add vector extension reduction instructions, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 13/17] RISC-V: add vector extension float instruction part1, add/sub/mul/div, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 12/17] RISC-V: add vector extension fixed point instructions, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 14/17] RISC-V: add vector extension float instructions part2, sqrt/cmp/cvt/others, liuzhiwei, 2019/09/11
- [Qemu-riscv] [PATCH v2 11/17] RISC-V: add vector extension integer instructions part4, mul/div/merge, liuzhiwei, 2019/09/11
- Re: [Qemu-riscv] [Qemu-devel] [PATCH v2 00/17] RISC-V: support vector extension, Aleksandar Markovic, 2019/09/11