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Re: [PATCH 6/7] tcg/ppc: Disable USE_REG_TB for Power v3.1
From: |
Nicholas Piggin |
Subject: |
Re: [PATCH 6/7] tcg/ppc: Disable USE_REG_TB for Power v3.1 |
Date: |
Sun, 06 Aug 2023 21:58:09 +1000 |
Patch 7 is not reqired for this?
Thanks,
Nick
On Sat Aug 5, 2023 at 7:33 AM AEST, Richard Henderson wrote:
> With Power v3.1, we have pc-relative addressing and so
> do not require a register holding the current TB.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
> tcg/ppc/tcg-target.c.inc | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
> index e8eced7cf3..5b243b2353 100644
> --- a/tcg/ppc/tcg-target.c.inc
> +++ b/tcg/ppc/tcg-target.c.inc
> @@ -83,7 +83,7 @@
> #define TCG_VEC_TMP2 TCG_REG_V1
>
> #define TCG_REG_TB TCG_REG_R31
> -#define USE_REG_TB (TCG_TARGET_REG_BITS == 64)
> +#define USE_REG_TB (TCG_TARGET_REG_BITS == 64 && !have_isa_3_10)
>
> /* Shorthand for size of a pointer. Avoid promotion to unsigned. */
> #define SZP ((int)sizeof(void *))
- [PATCH for-8.2 0/7] tcg/ppc: Support power10 prefixed instructions, Richard Henderson, 2023/08/04
- [PATCH 2/7] tcg/ppc: Use PADDI in tcg_out_movi, Richard Henderson, 2023/08/04
- [PATCH 1/7] tcg/ppc: Untabify tcg-target.c.inc, Richard Henderson, 2023/08/04
- [PATCH 3/7] tcg/ppc: Use prefixed instructions in tcg_out_mem_long, Richard Henderson, 2023/08/04
- [PATCH 4/7] tcg/ppc: Use PLD in tcg_out_movi for constant pool, Richard Henderson, 2023/08/04
- [PATCH 6/7] tcg/ppc: Disable USE_REG_TB for Power v3.1, Richard Henderson, 2023/08/04
- Re: [PATCH 6/7] tcg/ppc: Disable USE_REG_TB for Power v3.1,
Nicholas Piggin <=
- [PATCH 7/7] tcg/ppc: Use prefixed instructions for tcg_out_goto_tb, Richard Henderson, 2023/08/04
- Re: [PATCH 7/7] tcg/ppc: Use prefixed instructions for tcg_out_goto_tb, Jordan Niethe, 2023/08/07
[PATCH 5/7] tcg/ppc: Use prefixed instructions in tcg_out_dupi_vec, Richard Henderson, 2023/08/04
Re: [PATCH for-8.2 0/7] tcg/ppc: Support power10 prefixed instructions, Nicholas Piggin, 2023/08/06