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target/mips: Do not treat msa INSERT as NOP when wd is zero 

Only for msa COPY_U/COPY_S with wd zero, we treat it as NOP.

Move this special rule into COPY_U and COPY_S trans function.

Fixes: 97fe675519 ("target/mips: Convert MSA COPY_S and INSERT opcodes to decodetree")
Signed-off-by: Ni Hui <shuizhuyuanluo@126.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220503130708.272850-4-shuizhuyuanluo@126.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Ni Hui 2022-05-03 21:07:08 +08:00 committed by Philippe Mathieu-Daudé
parent 4b532b4f2b
commit ead0bf0d33
1 changed files with 10 additions and 5 deletions
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15
target/mips/tcg/msa_translate.c
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@ -603,11 +603,6 @@ static bool trans_msa_elm_fn(DisasContext *ctx, arg_msa_elm_df *a,
return true;
}
if (a->wd == 0) {
/* Treat as NOP. */
return true;
}
gen_msa_elm[a->df](cpu_env,
tcg_constant_i32(a->wd),
tcg_constant_i32(a->ws),
@ -624,6 +619,11 @@ static bool trans_msa_elm_fn(DisasContext *ctx, arg_msa_elm_df *a,
static bool trans_COPY_U(DisasContext *ctx, arg_msa_elm_df *a)
{
if (a->wd == 0) {
/* Treat as NOP. */
return true;
}
static gen_helper_piii * const gen_msa_copy_u[4] = {
gen_helper_msa_copy_u_b, gen_helper_msa_copy_u_h,
NULL_IF_MIPS32(gen_helper_msa_copy_u_w), NULL
@ -634,6 +634,11 @@ static bool trans_COPY_U(DisasContext *ctx, arg_msa_elm_df *a)
static bool trans_COPY_S(DisasContext *ctx, arg_msa_elm_df *a)
{
if (a->wd == 0) {
/* Treat as NOP. */
return true;
}
static gen_helper_piii * const gen_msa_copy_s[4] = {
gen_helper_msa_copy_s_b, gen_helper_msa_copy_s_h,
gen_helper_msa_copy_s_w, NULL_IF_MIPS32(gen_helper_msa_copy_s_d)