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

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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: <20200613152133.8964-7-aleksandar.qemu.devel@gmail.com>
This commit is contained in:
Aleksandar Markovic 2020-06-13 17:21:25 +02:00
parent 8ed86716f6
commit 0c8c76ac85
3 changed files with 68 additions and 15 deletions
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4
target/mips/helper.h
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@ -1090,7 +1090,9 @@ DEF_HELPER_4(msa_dpadd_u_d, void, env, i32, i32, i32)
DEF_HELPER_4(msa_dpsub_s_h, void, env, i32, i32, i32)
DEF_HELPER_4(msa_dpsub_s_w, void, env, i32, i32, i32)
DEF_HELPER_4(msa_dpsub_s_d, void, env, i32, i32, i32)
DEF_HELPER_5(msa_dpsub_u_df, void, env, i32, i32, i32, i32)
DEF_HELPER_4(msa_dpsub_u_h, void, env, i32, i32, i32)
DEF_HELPER_4(msa_dpsub_u_w, void, env, i32, i32, i32)
DEF_HELPER_4(msa_dpsub_u_d, void, env, i32, i32, i32)
DEF_HELPER_5(msa_sld_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_splat_df, void, env, i32, i32, i32, i32)
DEF_HELPER_5(msa_vshf_df, void, env, i32, i32, i32, i32)

67
target/mips/msa_helper.c
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@ -2398,6 +2398,60 @@ void helper_msa_dpsub_s_d(CPUMIPSState *env,
}
static inline int64_t msa_dpsub_u_df(uint32_t df, int64_t dest, int64_t arg1,
int64_t arg2)
{
int64_t even_arg1;
int64_t even_arg2;
int64_t odd_arg1;
int64_t odd_arg2;
UNSIGNED_EXTRACT(even_arg1, odd_arg1, arg1, df);
UNSIGNED_EXTRACT(even_arg2, odd_arg2, arg2, df);
return dest - ((even_arg1 * even_arg2) + (odd_arg1 * odd_arg2));
}
void helper_msa_dpsub_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_dpsub_u_df(DF_HALF, pwd->h[0], pws->h[0], pwt->h[0]);
pwd->h[1] = msa_dpsub_u_df(DF_HALF, pwd->h[1], pws->h[1], pwt->h[1]);
pwd->h[2] = msa_dpsub_u_df(DF_HALF, pwd->h[2], pws->h[2], pwt->h[2]);
pwd->h[3] = msa_dpsub_u_df(DF_HALF, pwd->h[3], pws->h[3], pwt->h[3]);
pwd->h[4] = msa_dpsub_u_df(DF_HALF, pwd->h[4], pws->h[4], pwt->h[4]);
pwd->h[5] = msa_dpsub_u_df(DF_HALF, pwd->h[5], pws->h[5], pwt->h[5]);
pwd->h[6] = msa_dpsub_u_df(DF_HALF, pwd->h[6], pws->h[6], pwt->h[6]);
pwd->h[7] = msa_dpsub_u_df(DF_HALF, pwd->h[7], pws->h[7], pwt->h[7]);
}
void helper_msa_dpsub_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_dpsub_u_df(DF_WORD, pwd->w[0], pws->w[0], pwt->w[0]);
pwd->w[1] = msa_dpsub_u_df(DF_WORD, pwd->w[1], pws->w[1], pwt->w[1]);
pwd->w[2] = msa_dpsub_u_df(DF_WORD, pwd->w[2], pws->w[2], pwt->w[2]);
pwd->w[3] = msa_dpsub_u_df(DF_WORD, pwd->w[3], pws->w[3], pwt->w[3]);
}
void helper_msa_dpsub_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_dpsub_u_df(DF_DOUBLE, pwd->d[0], pws->d[0], pwt->d[0]);
pwd->d[1] = msa_dpsub_u_df(DF_DOUBLE, pwd->d[1], pws->d[1], pwt->d[1]);
}
/*
* Int Max Min
* -----------
@ -5117,18 +5171,6 @@ void helper_msa_sld_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
msa_sld_df(df, pwd, pws, env->active_tc.gpr[rt]);
}
static inline int64_t msa_dpsub_u_df(uint32_t df, int64_t dest, int64_t arg1,
int64_t arg2)
{
int64_t even_arg1;
int64_t even_arg2;
int64_t odd_arg1;
int64_t odd_arg2;
UNSIGNED_EXTRACT(even_arg1, odd_arg1, arg1, df);
UNSIGNED_EXTRACT(even_arg2, odd_arg2, arg2, df);
return dest - ((even_arg1 * even_arg2) + (odd_arg1 * odd_arg2));
}
static inline int64_t msa_madd_q_df(uint32_t df, int64_t dest, int64_t arg1,
int64_t arg2)
{
@ -5255,7 +5297,6 @@ void helper_msa_ ## func ## _df(CPUMIPSState *env, uint32_t df, uint32_t wd, \
} \
}
MSA_TEROP_DF(dpsub_u)
MSA_TEROP_DF(binsl)
MSA_TEROP_DF(binsr)
MSA_TEROP_DF(madd_q)

12
target/mips/translate.c
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@ -29439,7 +29439,17 @@ static void gen_msa_3r(CPUMIPSState *env, DisasContext *ctx)
}
break;
case OPC_DPSUB_U_df:
gen_helper_msa_dpsub_u_df(cpu_env, tdf, twd, tws, twt);
switch (df) {
case DF_HALF:
gen_helper_msa_dpsub_u_h(cpu_env, twd, tws, twt);
break;
case DF_WORD:
gen_helper_msa_dpsub_u_w(cpu_env, twd, tws, twt);
break;
case DF_DOUBLE:
gen_helper_msa_dpsub_u_d(cpu_env, twd, tws, twt);
break;
}
break;
}
break;