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performance tweak

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This commit is contained in:
Martin Reinecke 2018-12-19 11:37:47 +01:00
parent 9a572e33b5
commit ec05c52653
1 changed files with 28 additions and 6 deletions
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34
libsharp/sharp_core.c
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@ -223,18 +223,18 @@ NOINLINE static void iter_to_ieee_alt(const sharp_Ylmgen_C * restrict gen,
while (below_limit)
{
if (l+2>gen->lmax) {*l_=gen->lmax+1;return;}
if (l+4>gen->lmax) {*l_=gen->lmax+1;return;}
below_limit=1;
Tv a=vload(gen->ab[il].f[0]), b=vload(gen->ab[il].f[1]);
Tv a1=vload(gen->ab[il ].f[0]), b1=vload(gen->ab[il ].f[1]);
Tv a2=vload(gen->ab[il+1].f[0]), b2=vload(gen->ab[il+1].f[1]);
for (int i=0; i<nv2; ++i)
{
Tv tmp = (a*d->csq[i] + b)*d->lam2[i] + d->lam1[i];
d->lam1[i] = d->lam2[i];
d->lam2[i] = tmp;
d->lam1[i] = (a1*d->csq[i] + b1)*d->lam2[i] + d->lam1[i];
d->lam2[i] = (a2*d->csq[i] + b2)*d->lam1[i] + d->lam2[i];
if (rescale(&d->lam1[i], &d->lam2[i], &d->scale[i], vload(sharp_ftol)))
below_limit &= vallTrue(vlt(d->scale[i],vload(sharp_limscale)));
}
l+=2; ++il;
l+=4; il+=2;
}
*l_=l; *il_=il;
}
@ -340,6 +340,28 @@ NOINLINE static void map2alm_alt_kernel(s0data_v * restrict d,
const sharp_ylmgen_dbl2 * restrict ab, dcmplx * restrict alm, int l,
int il, int lmax, int nv2)
{
for (; l<=lmax-2; il+=2, l+=4)
{
Tv a1=vload(ab[il ].f[0]), b1=vload(ab[il ].f[1]);
Tv a2=vload(ab[il+1].f[0]), b2=vload(ab[il+1].f[1]);
Tv atmp1[4] = {vzero, vzero, vzero, vzero};
Tv atmp2[4] = {vzero, vzero, vzero, vzero};
for (int i=0; i<nv2; ++i)
{
atmp1[0] += d->lam2[i]*d->p1r[i];
atmp1[1] += d->lam2[i]*d->p1i[i];
atmp1[2] += d->lam2[i]*d->p2r[i];
atmp1[3] += d->lam2[i]*d->p2i[i];
d->lam1[i] = (a1*d->csq[i] + b1)*d->lam2[i] + d->lam1[i];
atmp2[0] += d->lam1[i]*d->p1r[i];
atmp2[1] += d->lam1[i]*d->p1i[i];
atmp2[2] += d->lam1[i]*d->p2r[i];
atmp2[3] += d->lam1[i]*d->p2i[i];
d->lam2[i] = (a2*d->csq[i] + b2)*d->lam1[i] + d->lam2[i];
}
vhsum_cmplx_special (atmp1[0], atmp1[1], atmp1[2], atmp1[3], &alm[l ]);
vhsum_cmplx_special (atmp2[0], atmp2[1], atmp2[2], atmp2[3], &alm[l+2]);
}
for (; l<=lmax; ++il, l+=2)
{
Tv a=vload(ab[il].f[0]), b=vload(ab[il].f[1]);