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target/mips: Unroll loops for MSA float max/min instructions

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Slight preformance improvement for MSA float max/min instructions.

Backports commit 807e6773a5eba62054843b13d96ff778b90aba09 from qemu
This commit is contained in:
Aleksandar Markovic 2019-08-08 16:28:46 -04:00 committed by Lioncash
parent dd747162e5
commit bf194f980c
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 124 additions and 72 deletions
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196
qemu/target/mips/msa_helper.c
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@ -3847,35 +3847,65 @@ void helper_msa_fmin_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
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);
uint32_t i;
clear_msacsr_cause(env);
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
if (NUMBER_QNAN_PAIR(pws->w[i], pwt->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], min, pws->w[i], pws->w[i], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[i], pws->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], min, pwt->w[i], pwt->w[i], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[i], min, pws->w[i], pwt->w[i], 32);
}
if (df == DF_WORD) {
if (NUMBER_QNAN_PAIR(pws->w[0], pwt->w[0], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[0], min, pws->w[0], pws->w[0], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[0], pws->w[0], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[0], min, pwt->w[0], pwt->w[0], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[0], min, pws->w[0], pwt->w[0], 32);
}
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
if (NUMBER_QNAN_PAIR(pws->d[i], pwt->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], min, pws->d[i], pws->d[i], 64);
} else if (NUMBER_QNAN_PAIR(pwt->d[i], pws->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], min, pwt->d[i], pwt->d[i], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[i], min, pws->d[i], pwt->d[i], 64);
}
if (NUMBER_QNAN_PAIR(pws->w[1], pwt->w[1], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[1], min, pws->w[1], pws->w[1], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[1], pws->w[1], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[1], min, pwt->w[1], pwt->w[1], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[1], min, pws->w[1], pwt->w[1], 32);
}
break;
default:
if (NUMBER_QNAN_PAIR(pws->w[2], pwt->w[2], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[2], min, pws->w[2], pws->w[2], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[2], pws->w[2], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[2], min, pwt->w[2], pwt->w[2], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[2], min, pws->w[2], pwt->w[2], 32);
}
if (NUMBER_QNAN_PAIR(pws->w[3], pwt->w[3], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[3], min, pws->w[3], pws->w[3], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[3], pws->w[3], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[3], min, pwt->w[3], pwt->w[3], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[3], min, pws->w[3], pwt->w[3], 32);
}
} else if (df == DF_DOUBLE) {
if (NUMBER_QNAN_PAIR(pws->d[0], pwt->d[0], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[0], min, pws->d[0], pws->d[0], 64);
} else if (NUMBER_QNAN_PAIR(pwt->d[0], pws->d[0], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[0], min, pwt->d[0], pwt->d[0], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[0], min, pws->d[0], pwt->d[0], 64);
}
if (NUMBER_QNAN_PAIR(pws->d[1], pwt->d[1], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[1], min, pws->d[1], pws->d[1], 64);
} else if (NUMBER_QNAN_PAIR(pwt->d[1], pws->d[1], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[1], min, pwt->d[1], pwt->d[1], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[1], min, pws->d[1], pwt->d[1], 64);
}
} else {
assert(0);
}
check_msacsr_cause(env, GETPC());
@ -3891,22 +3921,18 @@ void helper_msa_fmin_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
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);
uint32_t i;
clear_msacsr_cause(env);
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
FMAXMIN_A(min, max, pwx->w[i], pws->w[i], pwt->w[i], 32, status);
}
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
FMAXMIN_A(min, max, pwx->d[i], pws->d[i], pwt->d[i], 64, status);
}
break;
default:
if (df == DF_WORD) {
FMAXMIN_A(min, max, pwx->w[0], pws->w[0], pwt->w[0], 32, status);
FMAXMIN_A(min, max, pwx->w[1], pws->w[1], pwt->w[1], 32, status);
FMAXMIN_A(min, max, pwx->w[2], pws->w[2], pwt->w[2], 32, status);
FMAXMIN_A(min, max, pwx->w[3], pws->w[3], pwt->w[3], 32, status);
} else if (df == DF_DOUBLE) {
FMAXMIN_A(min, max, pwx->d[0], pws->d[0], pwt->d[0], 64, status);
FMAXMIN_A(min, max, pwx->d[1], pws->d[1], pwt->d[1], 64, status);
} else {
assert(0);
}
@ -3923,35 +3949,65 @@ void helper_msa_fmax_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
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);
uint32_t i;
clear_msacsr_cause(env);
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
if (NUMBER_QNAN_PAIR(pws->w[i], pwt->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], max, pws->w[i], pws->w[i], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[i], pws->w[i], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[i], max, pwt->w[i], pwt->w[i], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[i], max, pws->w[i], pwt->w[i], 32);
}
if (df == DF_WORD) {
if (NUMBER_QNAN_PAIR(pws->w[0], pwt->w[0], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[0], max, pws->w[0], pws->w[0], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[0], pws->w[0], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[0], max, pwt->w[0], pwt->w[0], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[0], max, pws->w[0], pwt->w[0], 32);
}
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
if (NUMBER_QNAN_PAIR(pws->d[i], pwt->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], max, pws->d[i], pws->d[i], 64);
} else if (NUMBER_QNAN_PAIR(pwt->d[i], pws->d[i], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[i], max, pwt->d[i], pwt->d[i], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[i], max, pws->d[i], pwt->d[i], 64);
}
if (NUMBER_QNAN_PAIR(pws->w[1], pwt->w[1], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[1], max, pws->w[1], pws->w[1], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[1], pws->w[1], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[1], max, pwt->w[1], pwt->w[1], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[1], max, pws->w[1], pwt->w[1], 32);
}
break;
default:
if (NUMBER_QNAN_PAIR(pws->w[2], pwt->w[2], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[2], max, pws->w[2], pws->w[2], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[2], pws->w[2], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[2], max, pwt->w[2], pwt->w[2], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[2], max, pws->w[2], pwt->w[2], 32);
}
if (NUMBER_QNAN_PAIR(pws->w[3], pwt->w[3], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[3], max, pws->w[3], pws->w[3], 32);
} else if (NUMBER_QNAN_PAIR(pwt->w[3], pws->w[3], 32, status)) {
MSA_FLOAT_MAXOP(pwx->w[3], max, pwt->w[3], pwt->w[3], 32);
} else {
MSA_FLOAT_MAXOP(pwx->w[3], max, pws->w[3], pwt->w[3], 32);
}
} else if (df == DF_DOUBLE) {
if (NUMBER_QNAN_PAIR(pws->d[0], pwt->d[0], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[0], max, pws->d[0], pws->d[0], 64);
} else if (NUMBER_QNAN_PAIR(pwt->d[0], pws->d[0], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[0], max, pwt->d[0], pwt->d[0], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[0], max, pws->d[0], pwt->d[0], 64);
}
if (NUMBER_QNAN_PAIR(pws->d[1], pwt->d[1], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[1], max, pws->d[1], pws->d[1], 64);
} else if (NUMBER_QNAN_PAIR(pwt->d[1], pws->d[1], 64, status)) {
MSA_FLOAT_MAXOP(pwx->d[1], max, pwt->d[1], pwt->d[1], 64);
} else {
MSA_FLOAT_MAXOP(pwx->d[1], max, pws->d[1], pwt->d[1], 64);
}
} else {
assert(0);
}
check_msacsr_cause(env, GETPC());
@ -3967,22 +4023,18 @@ void helper_msa_fmax_a_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
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);
uint32_t i;
clear_msacsr_cause(env);
switch (df) {
case DF_WORD:
for (i = 0; i < DF_ELEMENTS(DF_WORD); i++) {
FMAXMIN_A(max, min, pwx->w[i], pws->w[i], pwt->w[i], 32, status);
}
break;
case DF_DOUBLE:
for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
FMAXMIN_A(max, min, pwx->d[i], pws->d[i], pwt->d[i], 64, status);
}
break;
default:
if (df == DF_WORD) {
FMAXMIN_A(max, min, pwx->w[0], pws->w[0], pwt->w[0], 32, status);
FMAXMIN_A(max, min, pwx->w[1], pws->w[1], pwt->w[1], 32, status);
FMAXMIN_A(max, min, pwx->w[2], pws->w[2], pwt->w[2], 32, status);
FMAXMIN_A(max, min, pwx->w[3], pws->w[3], pwt->w[3], 32, status);
} else if (df == DF_DOUBLE) {
FMAXMIN_A(max, min, pwx->d[0], pws->d[0], pwt->d[0], 64, status);
FMAXMIN_A(max, min, pwx->d[1], pws->d[1], pwt->d[1], 64, status);
} else {
assert(0);
}