openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

target/mips: msa: Split helpers for SUBSUS_U.<B|H|W|D> 

Achieves clearer code and slightly better performance.

Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
Signed-off-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Message-Id: <20200613152133.8964-12-aleksandar.qemu.devel@gmail.com>
This commit is contained in:
Aleksandar Markovic 2020-06-13 17:21:30 +02:00
parent 81b53858fe
commit 55a0464047
3 changed files with 103 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
target/mips/helper.h
View File

@ -988,6 +988,11 @@ DEF_HELPER_4(msa_subs_u_h, void, env, i32, i32, i32)
DEF_HELPER_4(msa_subs_u_w, void, env, i32, i32, i32)
DEF_HELPER_4(msa_subs_u_d, void, env, i32, i32, i32)
DEF_HELPER_4(msa_subsus_u_b, void, env, i32, i32, i32)
DEF_HELPER_4(msa_subsus_u_h, void, env, i32, i32, i32)
DEF_HELPER_4(msa_subsus_u_w, void, env, i32, i32, i32)
DEF_HELPER_4(msa_subsus_u_d, void, env, i32, i32, i32)
DEF_HELPER_4(msa_ilvev_b, void, env, i32, i32, i32)
DEF_HELPER_4(msa_ilvev_h, void, env, i32, i32, i32)
DEF_HELPER_4(msa_ilvev_w, void, env, i32, i32, i32)
@ -1084,7 +1089,6 @@ DEF_HELPER_5(msa_srlri_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_binsl_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_binsr_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_subv_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_subsus_u_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_subsuu_s_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_mulv_df, void, env, i32, i32, i32, i32)

102
target/mips/msa_helper.c
View File

@ -3802,6 +3802,90 @@ void helper_msa_subs_u_d(CPUMIPSState *env,
}
static inline int64_t msa_subsus_u_df(uint32_t df, int64_t arg1, int64_t arg2)
{
uint64_t u_arg1 = UNSIGNED(arg1, df);
uint64_t max_uint = DF_MAX_UINT(df);
if (arg2 >= 0) {
uint64_t u_arg2 = (uint64_t)arg2;
return (u_arg1 > u_arg2) ?
(int64_t)(u_arg1 - u_arg2) :
0;
} else {
uint64_t u_arg2 = (uint64_t)(-arg2);
return (u_arg1 < max_uint - u_arg2) ?
(int64_t)(u_arg1 + u_arg2) :
(int64_t)max_uint;
}
}
void helper_msa_subsus_u_b(CPUMIPSState *env,
uint32_t wd, uint32_t ws, uint32_t wt)
{
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
wr_t *pwt = &(env->active_fpu.fpr[wt].wr);
pwd->b[0] = msa_subsus_u_df(DF_BYTE, pws->b[0], pwt->b[0]);
pwd->b[1] = msa_subsus_u_df(DF_BYTE, pws->b[1], pwt->b[1]);
pwd->b[2] = msa_subsus_u_df(DF_BYTE, pws->b[2], pwt->b[2]);
pwd->b[3] = msa_subsus_u_df(DF_BYTE, pws->b[3], pwt->b[3]);
pwd->b[4] = msa_subsus_u_df(DF_BYTE, pws->b[4], pwt->b[4]);
pwd->b[5] = msa_subsus_u_df(DF_BYTE, pws->b[5], pwt->b[5]);
pwd->b[6] = msa_subsus_u_df(DF_BYTE, pws->b[6], pwt->b[6]);
pwd->b[7] = msa_subsus_u_df(DF_BYTE, pws->b[7], pwt->b[7]);
pwd->b[8] = msa_subsus_u_df(DF_BYTE, pws->b[8], pwt->b[8]);
pwd->b[9] = msa_subsus_u_df(DF_BYTE, pws->b[9], pwt->b[9]);
pwd->b[10] = msa_subsus_u_df(DF_BYTE, pws->b[10], pwt->b[10]);
pwd->b[11] = msa_subsus_u_df(DF_BYTE, pws->b[11], pwt->b[11]);
pwd->b[12] = msa_subsus_u_df(DF_BYTE, pws->b[12], pwt->b[12]);
pwd->b[13] = msa_subsus_u_df(DF_BYTE, pws->b[13], pwt->b[13]);
pwd->b[14] = msa_subsus_u_df(DF_BYTE, pws->b[14], pwt->b[14]);
pwd->b[15] = msa_subsus_u_df(DF_BYTE, pws->b[15], pwt->b[15]);
}
void helper_msa_subsus_u_h(CPUMIPSState *env,
uint32_t wd, uint32_t ws, uint32_t wt)
{
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
wr_t *pwt = &(env->active_fpu.fpr[wt].wr);
pwd->h[0] = msa_subsus_u_df(DF_HALF, pws->h[0], pwt->h[0]);
pwd->h[1] = msa_subsus_u_df(DF_HALF, pws->h[1], pwt->h[1]);
pwd->h[2] = msa_subsus_u_df(DF_HALF, pws->h[2], pwt->h[2]);
pwd->h[3] = msa_subsus_u_df(DF_HALF, pws->h[3], pwt->h[3]);
pwd->h[4] = msa_subsus_u_df(DF_HALF, pws->h[4], pwt->h[4]);
pwd->h[5] = msa_subsus_u_df(DF_HALF, pws->h[5], pwt->h[5]);
pwd->h[6] = msa_subsus_u_df(DF_HALF, pws->h[6], pwt->h[6]);
pwd->h[7] = msa_subsus_u_df(DF_HALF, pws->h[7], pwt->h[7]);
}
void helper_msa_subsus_u_w(CPUMIPSState *env,
uint32_t wd, uint32_t ws, uint32_t wt)
{
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
wr_t *pwt = &(env->active_fpu.fpr[wt].wr);
pwd->w[0] = msa_subsus_u_df(DF_WORD, pws->w[0], pwt->w[0]);
pwd->w[1] = msa_subsus_u_df(DF_WORD, pws->w[1], pwt->w[1]);
pwd->w[2] = msa_subsus_u_df(DF_WORD, pws->w[2], pwt->w[2]);
pwd->w[3] = msa_subsus_u_df(DF_WORD, pws->w[3], pwt->w[3]);
}
void helper_msa_subsus_u_d(CPUMIPSState *env,
uint32_t wd, uint32_t ws, uint32_t wt)
{
wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
wr_t *pws = &(env->active_fpu.fpr[ws].wr);
wr_t *pwt = &(env->active_fpu.fpr[wt].wr);
pwd->d[0] = msa_subsus_u_df(DF_DOUBLE, pws->d[0], pwt->d[0]);
pwd->d[1] = msa_subsus_u_df(DF_DOUBLE, pws->d[1], pwt->d[1]);
}
/*
* Interleave
* ----------
@ -5212,23 +5296,6 @@ MSA_TEROP_IMMU_DF(binsli, binsl)
MSA_TEROP_IMMU_DF(binsri, binsr)
#undef MSA_TEROP_IMMU_DF
static inline int64_t msa_subsus_u_df(uint32_t df, int64_t arg1, int64_t arg2)
{
uint64_t u_arg1 = UNSIGNED(arg1, df);
uint64_t max_uint = DF_MAX_UINT(df);
if (arg2 >= 0) {
uint64_t u_arg2 = (uint64_t)arg2;
return (u_arg1 > u_arg2) ?
(int64_t)(u_arg1 - u_arg2) :
0;
} else {
uint64_t u_arg2 = (uint64_t)(-arg2);
return (u_arg1 < max_uint - u_arg2) ?
(int64_t)(u_arg1 + u_arg2) :
(int64_t)max_uint;
}
}
static inline int64_t msa_subsuu_s_df(uint32_t df, int64_t arg1, int64_t arg2)
{
uint64_t u_arg1 = UNSIGNED(arg1, df);
@ -5369,7 +5436,6 @@ void helper_msa_ ## func ## _df(CPUMIPSState *env, uint32_t df, \
}
MSA_BINOP_DF(subv)
MSA_BINOP_DF(subsus_u)
MSA_BINOP_DF(subsuu_s)
MSA_BINOP_DF(mulv)

15
target/mips/translate.c
View File

@ -29346,7 +29346,20 @@ static void gen_msa_3r(CPUMIPSState *env, DisasContext *ctx)
gen_helper_msa_splat_df(cpu_env, tdf, twd, tws, twt);
break;
case OPC_SUBSUS_U_df:
gen_helper_msa_subsus_u_df(cpu_env, tdf, twd, tws, twt);
switch (df) {
case DF_BYTE:
gen_helper_msa_subsus_u_b(cpu_env, twd, tws, twt);
break;
case DF_HALF:
gen_helper_msa_subsus_u_h(cpu_env, twd, tws, twt);
break;
case DF_WORD:
gen_helper_msa_subsus_u_w(cpu_env, twd, tws, twt);
break;
case DF_DOUBLE:
gen_helper_msa_subsus_u_d(cpu_env, twd, tws, twt);
break;
}
break;
case OPC_SUBSUU_S_df:
gen_helper_msa_subsuu_s_df(cpu_env, tdf, twd, tws, twt);