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Re: [RFC 04/15] target/riscv: rvb: logic-with-negate
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From: |
Richard Henderson |
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Subject: |
Re: [RFC 04/15] target/riscv: rvb: logic-with-negate |
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Date: |
Thu, 19 Nov 2020 11:28:41 -0800 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 |
On 11/18/20 12:29 AM, frank.chang@sifive.com wrote:
> +static void gen_andn(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> + TCGv t;
> + t = tcg_temp_new();
> +
> + tcg_gen_not_tl(t, arg2);
> + tcg_gen_and_tl(ret, arg1, t);
> +
> + tcg_temp_free(t);
> +}
This is tcg_gen_andc_tl.
> +static void gen_orn(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> + TCGv t;
> + t = tcg_temp_new();
> +
> + tcg_gen_not_tl(t, arg2);
> + tcg_gen_or_tl(ret, arg1, t);
> +
> + tcg_temp_free(t);
> +}
This is tcg_gen_orc_tl.
> +static void gen_xnor(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> + TCGv t;
> + t = tcg_temp_new();
> +
> + tcg_gen_not_tl(t, arg2);
> + tcg_gen_xor_tl(ret, arg1, t);
> +
> + tcg_temp_free(t);
> +}
This is tcg_gen_eqv_tl.
r~
- [RFC 00/15] support subsets of bitmanip extension, frank . chang, 2020/11/18
- [RFC 01/15] target/riscv: reformat @sh format encoding for B-extension, frank . chang, 2020/11/18
- [RFC 02/15] target/riscv: rvb: count leading/trailing zeros, frank . chang, 2020/11/18
- [RFC 03/15] target/riscv: rvb: count bits set, frank . chang, 2020/11/18
- [RFC 04/15] target/riscv: rvb: logic-with-negate, frank . chang, 2020/11/18
- Re: [RFC 04/15] target/riscv: rvb: logic-with-negate,
Richard Henderson <=
- [RFC 05/15] target/riscv: rvb: pack two words into one register, frank . chang, 2020/11/18
- [RFC 06/15] target/riscv: rvb: min/max instructions, frank . chang, 2020/11/18
- [RFC 07/15] target/riscv: rvb: sign-extend instructions, frank . chang, 2020/11/18
- [RFC 08/15] target/riscv: rvb: single-bit instructions, frank . chang, 2020/11/18