Move xor-scan to scan.singeli; remove neq.singeli
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e261e80168
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d16ba6c3b1
@ -651,7 +651,7 @@ cachedBin‿linkerCache ← {
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"xag"‿"src/builtins/sort.c"‿"bins"
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"2.."‿"src/builtins/select.c"‿"select", "xag"‿"src/builtins/scan.c"‿"scan",
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"2a."‿"src/builtins/slash.c"‿"constrep", "2.."‿"src/builtins/scan.c"‿"neq",
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"2a."‿"src/builtins/slash.c"‿"constrep",
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"xag"‿"src/builtins/slash.c"‿"slash", "2.."‿"src/builtins/slash.c"‿"count"
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⟩
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objs ← ⟨⟩
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@ -12,18 +12,14 @@ static u64 vg_rand(u64 x) { return x; }
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#if SINGELI
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#define SINGELI_FILE scan
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#include "../utils/includeSingeli.h"
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#if __PCLMUL__
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#define SINGELI_FILE neq
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#include "../utils/includeSingeli.h"
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#endif
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#endif
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B scan_ne(B x, u64 p, u64 ia) { // consumes x
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u64* xp = bitarr_ptr(x);
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u64* rp; B r=m_bitarrv(&rp,ia);
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#if SINGELI_AVX2 && __PCLMUL__
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clmul_scan_ne(p, xp, rp, BIT_N(ia));
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#if SINGELI
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si_scan_ne(p, xp, rp, BIT_N(ia));
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#if USE_VALGRIND
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if (ia&63) rp[ia>>6] = vg_def_u64(rp[ia>>6]);
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#endif
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@ -1,29 +0,0 @@
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include './base'
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include './sse'
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include './clmul'
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fn clmul_scan_ne_any(x:*void, r:*void, init:u64, words:u64, mark:u64) : void = {
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def V = [2]u64
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m := V**mark
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def xor64{a, i, carry} = { # carry is 64-bit broadcasted current total
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p := clmul{a, m, i}
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t := shr{[16]u8, p, 8}
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s := p ^ carry
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carry = s ^ t
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s
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}
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xv := *V ~~ x
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rv := *V ~~ r
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e := words/2
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c := V**init
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@for (rv, xv over e) {
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rv = apply{zipLo, (@collect (j to 2) xor64{xv, j, c})}
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}
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if (words & 1) {
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storeLow{rv+e, 64, clmul{loadLow{xv+e, 64}, m, 0} ^ c}
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}
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}
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fn clmul_scan_ne_bit(init:u64, x:*u64, r:*u64, ia:u64) : void = {
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clmul_scan_ne_any(*void~~x, *void~~r, init, ia, -(u64~~1))
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}
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export{'clmul_scan_ne', clmul_scan_ne_bit}
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@ -1,5 +1,6 @@
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include './base'
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include './sse'
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include './clmul'
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include './avx'
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include './avx2'
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include './mask'
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@ -118,6 +119,40 @@ export{'si_scan_pluswrap_u8', scan_assoc_0{u8 , +}}
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export{'si_scan_pluswrap_u16', scan_assoc_0{u16, +}}
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export{'si_scan_pluswrap_u32', scan_assoc_0{u32, +}}
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# xor scan
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fn scan_neq{}(p:u64, x:*u64, r:*u64, nw:u64) : void = {
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@for (x, r over nw) {
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def sc{v, k} = if (k==64) v else sc{v ^ (v<<k), 2*k}
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r = p ^ sc{x, 1}
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p = -(r>>63) # repeat sign bit
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}
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}
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fn clmul_scan_ne_any{..._ & hasarch{'PCLMUL'}}(x:*void, r:*void, init:u64, words:u64, mark:u64) : void = {
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def V = [2]u64
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m := V**mark
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def xor64{a, i, carry} = { # carry is 64-bit broadcasted current total
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p := clmul{a, m, i}
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t := shr{[16]u8, p, 8}
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s := p ^ carry
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carry = s ^ t
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s
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}
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xv := *V ~~ x
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rv := *V ~~ r
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e := words/2
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c := V**init
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@for (rv, xv over e) {
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rv = apply{zipLo, (@collect (j to 2) xor64{xv, j, c})}
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}
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if (words & 1) {
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storeLow{rv+e, 64, clmul{loadLow{xv+e, 64}, m, 0} ^ c}
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}
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}
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fn scan_neq{..._ & hasarch{'PCLMUL'}}(init:u64, x:*u64, r:*u64, nw:u64) : void = {
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clmul_scan_ne_any{}(*void~~x, *void~~r, init, nw, -(u64~~1))
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}
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export{'si_scan_ne', scan_neq{}}
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# Boolean cumulative sum
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fn bcs{T}(x:*u64, r:*T, l:u64) : void = {
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def bitp_get{arr, n} = (load{arr, n>>6} >> (n&63)) & 1
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