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Re: [PATCH 20/28] target/arm: Improve REV32
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From: |
Peter Maydell |
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Subject: |
Re: [PATCH 20/28] target/arm: Improve REV32 |
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Date: |
Mon, 21 Jun 2021 16:08:52 +0100 |
On Mon, 14 Jun 2021 at 09:38, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> For the sf version, we are performing two 32-bit bswaps
> in either half of the register. This is equivalent to
> performing one 64-bit bswap followed by a rotate.
>
> For the non-sf version, we can remove TCG_BSWAP_IZ
> and the preceding zero-extension.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
thanks
-- PMM
- Re: [PATCH 18/28] tcg: Make use of bswap flags in tcg_gen_qemu_ld_*, (continued)
- [PATCH 09/28] tcg/ppc: Split out tcg_out_bswap64, Richard Henderson, 2021/06/14
- [PATCH 11/28] tcg/ppc: Use power10 byte-reverse instructions, Richard Henderson, 2021/06/14
- [PATCH 16/28] tcg: Handle new bswap flags during optimize, Richard Henderson, 2021/06/14
- [PATCH 15/28] tcg/tci: Support bswap flags, Richard Henderson, 2021/06/14
- [PATCH 20/28] target/arm: Improve REV32, Richard Henderson, 2021/06/14
- [PATCH 19/28] tcg: Make use of bswap flags in tcg_gen_qemu_st_*, Richard Henderson, 2021/06/14
- [PATCH 25/28] target/mips: Fix gen_mxu_s32ldd_s32lddr, Richard Henderson, 2021/06/14
- [PATCH 27/28] tcg/aarch64: Unset TCG_TARGET_HAS_MEMORY_BSWAP, Richard Henderson, 2021/06/14
- [PATCH 12/28] tcg/s390: Support bswap flags, Richard Henderson, 2021/06/14
- [PATCH 21/28] target/arm: Improve vector REV, Richard Henderson, 2021/06/14