Le ven. 28 août 2020 20:04, Richard Henderson <richard.henderson@linaro.org>
a écrit :
> Do not store back to the exact memory from which we just loaded.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
> tcg/tcg-op-gvec.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tcg/tcg-op-gvec.c b/tcg/tcg-op-gvec.c
> index 793d4ba64c..fcc25b04e6 100644
> --- a/tcg/tcg-op-gvec.c
> +++ b/tcg/tcg-op-gvec.c
> @@ -1581,7 +1581,7 @@ void tcg_gen_gvec_dup_mem(unsigned vece, uint32_t
> dofs, uint32_t aofs,
> TCGv_vec in = tcg_temp_new_vec(TCG_TYPE_V128);
>
> tcg_gen_ld_vec(in, cpu_env, aofs);
> - for (i = 0; i < oprsz; i += 16) {
> + for (i = (aofs == dofs) * 16; i < oprsz; i += 16) {
> tcg_gen_st_vec(in, cpu_env, dofs + i);
> }
> tcg_temp_free_vec(in);
> @@ -1591,7 +1591,7 @@ void tcg_gen_gvec_dup_mem(unsigned vece, uint32_t
> dofs, uint32_t aofs,
>
> tcg_gen_ld_i64(in0, cpu_env, aofs);
> tcg_gen_ld_i64(in1, cpu_env, aofs + 8);
> - for (i = 0; i < oprsz; i += 16) {
> + for (i = (aofs == dofs) * 16; i < oprsz; i += 16) {
> tcg_gen_st_i64(in0, cpu_env, dofs + i);
> tcg_gen_st_i64(in1, cpu_env, dofs + i + 8);
> }
> --
> 2.25.1
>
>
>