𝕨/𝕩: move tail skipping to BMI-less build
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40dc184063
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@ -531,15 +531,14 @@ B slash_c2(B t, B w, B x) {
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usz ri = 0;
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if (TI(w,elType)==el_bit) {
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u64* wp = bitarr_ptr(w);
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while (wia>0 && !bitp_get(wp,wia-1)) wia--;
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usz wsum = bit_sum(wp, wia);
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if (wsum==0) { dec(w); dec(x); return q_N(xf)? emptyHVec() : isF64(xf)? emptyIVec() : isC32(xf)? emptyCVec() : m_emptyFVec(xf); }
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B r;
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switch(TI(x,elType)) { default: UD;
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#ifdef __BMI2__
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case el_bit: { u64* xp = bitarr_ptr(x); u64* rp; r = m_bitarrv(&rp,wsum+128); a(r)->ia = wsum;
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u64* wp = bitarr_ptr(w);
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u8 xe = TI(x,elType);
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#ifdef __BMI2__
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usz wsum = bit_sum(wp, wia);
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switch(xe) {
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case el_bit: {
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u64* xp = bitarr_ptr(x); u64* rp; r = m_bitarrv(&rp,wsum+128); a(r)->ia = wsum;
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u64 cw = 0; // current word
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u64 ro = 0; // offset in word where next bit should be written; never 64
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for (usz i=0; i<BIT_N(wia); i++) {
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@ -555,18 +554,28 @@ B slash_c2(B t, B w, B x) {
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ro = ro2&63;
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}
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if (ro) *rp = cw;
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break;
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goto bit_ret;
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}
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#else
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case el_bit: { u64* xp = bitarr_ptr(x); u64* rp; r = m_bitarrv(&rp,wsum); for (usz i=0; i<wia; i++) { bitp_set(rp,ri,bitp_get(xp,i)); ri+= bitp_get(wp,i); } break; }
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#if SINGELI
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case el_i8: { i8* xp = i8any_ptr (x); i8* rp; r = m_i8arrv (&rp, wsum+8); a(r)->ia-= 8; bmipopc_2slash8 (wp, xp, rp, wia); goto bit_ret; }
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case el_i16: { i16* xp = i16any_ptr(x); i16* rp; r = m_i16arrv(&rp, wsum+16); a(r)->ia-= 16; bmipopc_2slash16(wp, xp, rp, wia); goto bit_ret; }
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#endif
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}
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#endif
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while (wia>0 && !bitp_get(wp,wia-1)) wia--;
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#ifndef __BMI2__
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usz wsum = bit_sum(wp, wia);
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#endif
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if (wsum==0) { dec(w); dec(x); return q_N(xf)? emptyHVec() : isF64(xf)? emptyIVec() : isC32(xf)? emptyCVec() : m_emptyFVec(xf); }
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switch(xe) { default: UD;
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#if SINGELI && defined(__BMI2__)
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case el_i8: { i8* xp = i8any_ptr (x); i8* rp; r = m_i8arrv (&rp, wsum+8); a(r)->ia-= 8; bmipopc_2slash8 (wp, xp, rp, wia); break; }
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case el_i16: { i16* xp = i16any_ptr(x); i16* rp; r = m_i16arrv(&rp, wsum+16); a(r)->ia-= 16; bmipopc_2slash16(wp, xp, rp, wia); break; }
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#else
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#if !SINGELI
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case el_i8: { i8* xp = i8any_ptr (x); i8* rp; r = m_i8arrv (&rp,wsum); for (usz i=0; i<wia; i++) { *rp = xp[i]; rp+= bitp_get(wp,i); } break; }
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case el_i16: { i16* xp = i16any_ptr(x); i16* rp; r = m_i16arrv(&rp,wsum); for (usz i=0; i<wia; i++) { *rp = xp[i]; rp+= bitp_get(wp,i); } break; }
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#ifndef __BMI2__
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case el_bit: { u64* xp = bitarr_ptr(x); u64* rp; r = m_bitarrv(&rp,wsum); for (usz i=0; i<wia; i++) { bitp_set(rp,ri,bitp_get(xp,i)); ri+= bitp_get(wp,i); } break; }
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#endif
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#endif
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case el_i32: { i32* xp = i32any_ptr(x); i32* rp; r = m_i32arrv(&rp,wsum); for (usz i=0; i<wia; i++) { *rp = xp[i]; rp+= bitp_get(wp,i); } break; }
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@ -590,6 +599,9 @@ B slash_c2(B t, B w, B x) {
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break;
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}
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}
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#if __BMI2__
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bit_ret:;
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#endif
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dec(w); dec(x); return r;
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}
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#define CASE(WT,XT) if (TI(x,elType)==el_##XT) { \
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