| Commit message (Collapse) | Author | Age | Files | Lines |
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before c, whole positions inside, numbers or i64s), BYTE (one byte of an i64 0-255), BYTES_LOAD and BYTES_STORE (an event's 32 values held by name, 0-15 bytes and 16-31 texts so a text's hold UTF-8 alone, emptied as an event or a view's body begins, appended to in place, counted in the room: MEMORY past it), CONCAT of bytes, NUM_TEXT in a format (a width padded with spaces or with zeros after the sign, d x X b o of an i64 or a whole number, f with 0-30 digits; -0 as 0), a reply of a held value kept by value, LEN wherever a value is read (it had been for handlers alone); pure-run's message NAME @PATH (the file's bytes, of any size); unit tests (16 formats, 9 slices, held values set, appended, set to a part of themselves, emptied each event, a doubling stopped by the room, a reply kept, 7 refused)
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xor, a left shift as a times 2^b failing as overflow past the range, a right shift as floor(a / 2^b), a count outside 0-63 failing as limit: integers in two's complement without end), BYTE_AT (the byte of any bytes value at a whole position, a number or an i64, else limit), BYTES_OF (a list of one i64 field as bytes, a value outside 0-255 failing as limit) and INDEX_AT (a list's item at a position, not_found where there is none); the fold-shape and batch analyses count their arity and the lists they read; unit tests of the ends (27 bit cases, 11 reads of a constant's and a text state's bytes, 7 refused)
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spare_count they moved its large arrays and knapsack ran 7% slower at the same instructions (8.79 against 8.29 ms), at its end about 2% (8.45); research 139's afterword: 026 not taken heavily (the user's word), the one light cut made (a nested count loop's rounds sweeping only when few lanes are left: matmul 25.85 to 24.3 ms), the walk loops kept sweeping each round (held, BFS's batches ran out), and the stop; 041 runs of b21
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back only when fewer are left than the most a round has taken and one (fresh and new_mask keep the fewest left; nested rounds' marks given back to the rounds around), else once after the loop as the last round did; matmul 3.6% fewer instructions, 4.5% fewer cycles (a sweep a k-round); a walk's rounds and a spread walk's chunks still sweep each: so held, BFS's batches ran out of lanes and went back to the executor (36.9 ms, the answers the same), what their filters and selections take not told by a round's fewest left; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources (also sanitized), the unit tests and ASan's pass
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(an add of the key it asked, as a filter's is, takes the place found) and clears only the words of the bits it set (their places kept as it sets them): BFS 0.4% fewer instructions; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources (GRAPH's exists, memory and work faults where they were) and the unit tests pass
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round 0 (sums_in_words): the rows and e's in four bytes first (vector code) up to the first round whose e is not a whole number below 2^32, then each round's sums in turn in integers for a one- or four-byte cell while it stays in its bytes, as a number for an eight-byte cell while finite; where one is not so the executor's way goes on from that round and sum (nothing faulted or widened before it); join 4.9% fewer cycles; SUMS_SOURCE in check.py (sixteen rows met again and again, a one-byte column widened mid-batch, a four-byte one past 2^32, a masked fraction), 7,912 rounds at once and 3,228 the other way, the same three ways; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources (also sanitized) and the unit tests pass
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in its own loop (TEST, a vector add in the same loop) and its value carries the count (ones), so the branch after it in every running lane needs not count them; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass
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memory's order in four or eight bytes is a view of the column itself (cells_at), no copy, read only while the pass runs; what outlives the pass (a local, a set's rows and value, an append's cells, a sum's rows and e, a filter's key, a read's rows) copies it (own); knapsack 4.0% fewer instructions, 6.6% fewer cycles; VIEW_SOURCE in check.py (a local holding a field the batch sets, a set from the same column in the order that overwrites what it reads, a set widening the column under a view), which differs and trips ASan's memcpy overlap when the copies are left out; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources (also sanitized) and the unit tests pass
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its pass reads): no list changes while the pass runs (sets, appends and filters wait for its end, which reads its own); find and item_get read them there; matmul 2.3% fewer instructions (two finds a nested round), knapsack and BFS 0.4%; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass
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while every step adds (or takes the least or most of) the same e in every lane, every lane's partial is one number and its count one count, made as each lane would make them; the first step that differs makes the lanes from them; fold takes n times the one number (whole numbers below 2^53, as the lanes' sums) or folds it in the rounds' order; sum0 6.09 to 1.01 ms; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass
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(POSIX's select in a build without -std=c17 refused the file)
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below 2^32 of whole numbers below it in four-byte lanes, past it the product's high half sends the lanes back to numbers as ADD's sum does (umull and umull2 over four lanes); matmul's products and sums stay in four bytes; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass
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unit tests in three modes and under ASan (executor mode too), the sanitized pure-run's fixed sources and seed 23 (both modes), make check and aup's checks in both modes pass
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instructions that make one uniform or affine value (constants, fields, LOADs, a walk's item, locals the block does not set, the loop's value, a nested count loop's, a local a segment set once before; a field at a uniform row; arithmetic and comparisons) and their LOCAL_STORE, planned at load and run at once in scalars by the pass's rules when the batch runs plainly, the pass's own way when a value is not as planned; the check (PURE_BATCH_CHECK) runs each dry and compares with the pass's own: seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass, seed 23's programs checking 312,249 segments in 213 of 650 runs
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the unit tests in three modes and under ASan (executor mode too), the sanitized pure-run's fixed sources and seed 23 (both modes), make check and aup's checks in both modes pass
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their locals, updates and steps, records and a round's actions in the plan, a number that stays planned by its source (a constant, field, LOAD or local the block does not set: the same source one number, two sources of the same value two) and filled in as a batch opens, the pass finding an update or a record by its instruction's role; the check compares updates, records and whether the batch holds them with the block read again each batch: seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass
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load (pure_batch_plans, after its instructions' plans are final): the locals it sets and whether it sets items, its sums into cells, and at each instruction a role (a sum's again, add or set) and how far on a LOCAL_LOAD's x = x op e is; batch_run, pass and local_load read the plan instead of scanning the block each batch; PURE_BATCH_LANES to build other lane counts; PURE_BATCH_CHECK (a build flag, while the stage is made) reads the block again each batch and stops if the plan differs; seeds 1 2 3 5 23 (default and PURE_SELECT=all), the fixed sources and the unit tests pass with it
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clang -Wpedantic refuses
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are (a loop's value gathered: the end's checks know them, where lanes of rows gave the batch back: knapsack 48 to 11.5 ms); a module with no value planned for reuse spares the batch the looks (reuses); local_load inlined again
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as an earlier one in a line of the block (nothing between setting what it reads: planned at load, reuse_from and reuse_length) is taken from the earlier, kept for it; if !c { ... } one branch the other way, no NOT; an arm whose lanes are a quarter or fewer runs in those lanes alone (a selection: outer values gathered by sel, reductions into their lanes around, locals set given back masked at its end, stores and sums expanded, appends and a filter's kept rounds by sel; PURE_SELECT=all every straight arm, 0 none); a list whose keys are bits asked by them in one loop of lanes, a filter decided by its bits and bits of our own (no hash set; a key with no bit is not there); L.first + i affine while within the list; a slice's two bounds in one call (pure_list_slice); a filter's kept rounds copied from numbers made once. The suite's BFS 211 to 112 instructions an edge (the compiled code 38.5), 41.0 to 23.5 ms; the frontier sum 70 to 56 (35). Seeds 1, 2, 3, 5, 23 alike by default and with every arm selected
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walk's spread items (PLAN_FILTER; L only grown there, one filter a list, none in a nested LOOP): each round asked as the batch opens, its code run in the rounds it said no to, those rounds kept (k and the appends' cells) and asked again at the end in the rounds' order (L as it is and what the kept rounds before add), the rest added at once (pure_list_add_many) once the lists take them and the memory budget all of them (else, or a key added there already, the batch gives its rounds back); a list such a filter grows read in the block only as no earlier round's item would change (its count in the guard, its first, a place when it has no key, a field by key). Keys kept as bits (pure_list_bits) asked by a loop of lanes, fields of a DENSE list found at their keys (pure_list_dense); an outer lane's affine value in four bytes. The suite's BFS batched: PURE_JIT=0 93 to 39.6 ms (the compiled code 7.7, C 10). module_tier's walks filter d (seeds 1, 2, 3, 5, 23 alike: 5,806 filters decided in seed 23's); GRAPH_SOURCE: a graph built by a filter, searched twice, marks whose filter adds another key (EXISTS), under work and memory budgets
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only grown in it) batches to L's count as each batch opens (PLAN_GUARD; fewer than LEAST rounds left there: the executor's, then batches again); a walk in a batch's block (its slice per lane, no where's range) runs each lane's items, its work counted as each opens: together round by round (BREAK as a nested loop's), or spread into lanes in the rounds' order a chunk of up to 1024 at a time when its items' rounds may run apart (PLAN_SPREAD: no break, the locals it sets reductions or its items' own: an outer lane's value read by each item's outer lane, a reduction added into its outer lane's in the items' order, an own local left as the last item that set it); rows in four bytes read and checked by loops of their own. A frontier walk of the suite's graph (each node's edges' to summed) PURE_JIT=0 55.2 to 10.4 ms (the compiled code 6.24). module_tier makes guarded loops with a walk in each (seeds 1, 2, 3, 5, 23 alike: 8,819 spread and 7,651 together in seed 23's); FRONT_SOURCE
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(steps, x set by an update's last step itself, records), the numbers through a restrict pointer; a record of x where x was not set since an earlier one shares its lanes (join's four reads of x: one store a round). 1,000,000 rounds of MINSTD 25.7 to 21.9 ms, with four reads of x into a sum 50.4 to 36.0 (the compiled code 18.5 and 19.9); PURE_JIT=0 join 131 to 118
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and the most; a sum of whole numbers whose magnitudes together stay below 2^53, four sums at a time), the rounds' order kept for the rest; each lane's least and most step and their fold over the numbers as integers in their order (-0 below +0), loops of vector code; a reduction's lanes cleared by a loop that keeps its count: 1,024,000 rounds of a max 9.80 to 4.00 ms (the compiled code 4.27), of a count 4.51 to 1.61
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(a step's result, a recurrence's value, the loop's value, a number that stays) rather than a stack's pushes and pops, an operation computed twice in its statement once (x the same until it is done): 1,000,000 rounds of MINSTD 44.4 to 25.7 ms (the compiled code 18.5, the executor alone 73.0); costs/recur.aup
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128) when every list takes its items so (an event's list, no index into it, one append to it: FLAT not keyed at its end, DENSE by keys it holds at its count, HASHED by number; never past its arrays' limit) and the memory budget takes them all (each item only grows what it counts): columns grown and widened once, the first key there already the executor's EXISTS at its round; else round by round as before, tried at once again after a round that changed a list's form. 50,000 DENSE adds 5.18 to 0.65 ms (the compiled code 0.28). APPEND_SOURCE: keys there already at rounds q and p, keys past a DENSE list's from round p, two appends to one list, widened columns, under memory budgets (seeds 1, 2, 3, 5, 23 alike: 31,402 batches at once in seed 23's, 292 by the budget round by round)
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at a time: each lane an item's place (ROW of the walked list affine), its work counted as it opened, its place moved past the batch; no append to the walked list. module_tier makes walks of rounds apart (f, g, h, slices of g; seeds 1, 2, 3, 5, 23 alike: 1,891 walk batches in seed 1); BATCH_SOURCE walks a slice
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e, neither reading L; the set at k's row as found), keeps its rows and e from the pass (the second k, its find and the cell's read skipped) and adds them at the batch's end round by round as the executor adds and sets (a sum not finite: the executor's fault at its round; a column too narrow widened); a batch reading or setting those cells otherwise gives its rounds back. Recurrence steps one dispatch each. PURE_JIT=0 join 428 to 165 ms (the compiled code 78). module_tier makes sums into cells (seeds 1, 23 alike: 278 batches with them in seed 1); BATCH_SOURCE sums into three cells in turn
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sets it, every set of it x = e of x, numbers, fields, states, the loop's value and locals the block does not set, in no branch's way; its sets planned PLAN_RECUR) runs ahead of the batch round by round as steps decoded once a batch, as the executor computes them (a round's fault gives the batch back), leaving its value at each other read in each lane; the batch's pass skips its sets. matmul's, knapsack's and join's table loops batch: matmul 50 to 46 ms. module_tier makes loops with a recurrence (x1) ahead of appends, sets and sums (seeds 1, 2, 3, 5, 23 alike); RECUR_SOURCE: two updates a round, a division by 0 and a product past the numbers at some round, under work and memory budgets
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with no room left for a list's headroom kept its live count anyway (in x30, the 13th register) and wrote that stale count over the list's own after its appends went the unbooked way (a loop of appends after a doubly nested loop reading t.has, PURE_JIT=all: e.count 1 for 36)
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appended in a batch's block (to a list the block reads nowhere else, no index into it, no nested loop) is made at the batch's end round by round through the executor's own step: keys there already, the memory budget, its undo log as the executor's; a fault there is the executor's at that round (the event undone: its kind, its instruction and the work so far tell), pure_batch_run's third way out. module_tier's handlers append (e, d) in rounds apart and run under a memory budget too (seeds 1, 2, 3, 5, 23 alike); knapsack's table loop batched (13.8 to 13.7 ms: the appends cost as the executor's)
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growth in registers checks the memory against the books' headroom (the app's growth lacks theirs until written back): it faulted MEMORY a round late, its work a round more than the executor's (a loop appending to DENSE, FLAT and HASHED lists, memory 6000: 3562 for 3525). pure-run: memory N, the states' budget
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same loop: a pass less each), tests of numbers giving four-byte 1s and 0s (a branch's mask as they are), numbers made of four-byte lanes and affine values by loops of their own, the loop's value as numbers made once a batch, no live lanes to make while none broke out or ran out, a small whole count's sum unchecked: PURE_JIT=0 roots 16.8 to 9.1 ms (the compiled code 9.6, C 6.9), matmul 68 to 50
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for every lane together (round t for the lanes with more than t rounds that did not break out; BREAK leaves it lane by lane; its slot as each round sets it), and x = x op e (op +, min, max; x read no other way) is a reduction: each lane's own from op's identity (-0 a sum's), folded in the rounds' order at the batch's end (a sum's lanes of several whole numbers only, below 2^53); nested rounds' work counted for each lane and checked before anything changes; lanes and masks no holder keeps freed between nested rounds. Planned at load: a local read before set in its loop's scope, or not a reduction's, keeps the loop round by round. PURE_JIT=0: roots 130.5 to 16.8 ms, matmul 914.7 to 68.2. module_tier makes nested loops with breaks and reductions (seeds 1, 2, 3, 23: 549 programs alike); NESTED_SOURCE
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(lane forms, locals set before read in every round, ifs, numbers set in items) runs, in the executor, up to 1024 rounds at a time: values uniform, affine or lanes (numbers, or whole numbers in four bytes), branches as masks, cells read by affine rows as strided columns, sets kept to the batch's end and made only when no round reads an earlier round's; a fault, a form it lacks or such a read gives the rounds back to the executor one by one, work counted as written. Planned at load (PURE_BATCH=0: none); the executor of a module without such loops is the same code (run aligned to 64: as many instructions and cycles), with one its own copy. knapsack with PURE_JIT=0: 1,056 to 13.7 ms. module_tier compares batches with the executor alone and makes loops of rounds apart; BATCH_SOURCE: widened columns, -0, a fault mid-batch, rounds reading the last's sets
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off the number pipes the divisions and sums wait on: roots 10.9 to 9.6 ms (1.39x C). 040 newton.c: roots' loop in the forms the tier may make it (the check as numbers 9.7 ms, in integers 8.7, none 7.7; next in r's register as gcc keeps it 7.0)
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round, in range for every round (its opening found it) and in a full list, reads its cell through a pointer, a phi at the loop's head: the column (read from the list) plus the key at round 0 times four where the loop opens, its key's step a round times four added at its latch. The key's nodes, in range, give up nowhere (no snapshot kept), so a key read by such accesses alone is not made; a list found by key alone with such an access is full where the tier begins (else the generic code runs the nest). matmul 23.0 to 14.2 ms (3.1x to 1.9x C)
module_tier's programs sweep lists by keys stepping with a round (in range or not, a list full or not)
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bits): one that an index state then asks where an item went is inserted FLAT, whose key set an item's layout key (-1) would read past; the FLAT and tree key sets kept only for number keys. A list read by position checks for HASHED where it is not a tree alone (stored lists: none of it): the bank queries' instructions within 0.5% of 6b45806 (0.3-0.8% before)
text_keys_equivalence asks where an item went in some events
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(constants between), checks only the last is finite, giving up at the run's first snapshot (the executor makes the run again and fails where it does); a snapshot's constants written as the constants they are, not kept in registers; the generic code's append in a loop keeping its books puts into a HASHED list as append does (its headroom kept). roots 12.2 to 10.9 ms (1.59x C), join 84 to 74 (2.5x)
module_assumptions: a run of products and sums past the largest number (CHAIN_SOURCE)
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slots, as C's table: in the L3), the generic code's APPEND into a HASHED list at its key's slot while its table need not grow, a whole number over a whole one above 0 never -0 (so MINSTD's floor(x * 48271 / p) is whole and x an integer in the tier). join 108 to 84 ms (2.8x C), sort 58 to 37 (1.4x)
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keyed by a text is HASHED from its first item, its table's slots holding the texts' hashes (FNV-1a), a match the key cell's bytes too; HAS and a field by key read the table; its order made by a merge sort (the first eight bytes as a number, then all). A FIND whose index only an ITEM_SET of its list takes, the code between in a line finding by key alone, sets the item where it was found (PLAN_ROW: a HASHED list's slot, no position made). words 453 to 217 ms (5.8x C)
text_keys_equivalence: adds, has, fields by key, sets where found, positions, runs, removes and clears against a tree keyed by the text
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each item's cells at its key's slot in its members' table, found by key there (the key and its cells read at one slot, as C's table); its order made by a radix sort of the slots' keys when something asks for a position (twice an event, then FLAT or a tree). The tier finds by key alone in a HASHED list (its bits' bit 1, its limit all ones: the bounds checked at a loop's opening still hold) out of the line; a list keyed by each count in order is DENSE from its first item. join 531 to 108 ms (3.5x C), sort 98 to 58 (2.1x)
arrays_equivalence counts the HASHED form against a tree; module_tier's programs read a HASHED list by key
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one (the round's register the next's: no move on the way back), a way's moves only for phis something needs, a number over a power of two times its reciprocal (the same number), a constant only numbers' arithmetic reads a number made where the tier begins, the 2^53 check in three instructions. roots 14.1 to 12.2 ms (1.78x C), knapsack 8.5 to 7.8 (1.26x)
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rounds it does not run given back where it breaks or gives up), a comparison only a branch reads its flags, a full list's keys read without its bits (a key's position found: its key's register), an add's or sub's register its operand's where that is read last. knapsack 16.5 to 8.5 ms (1.37x C), matmul 25.7 to 22.9
Two bugs the work checks found, there since 6cd7f5a: the outermost loop's round past the work budget gave up at the loop's instruction, with nothing on the stack (the executor opened it again: LIMIT where WORK), now at its iteration; and a phi where an if's ways meet took its merge's loop (-1), so a value made of it was taken as made outside its loop and made once for all rounds. pure-run's budget and work commands; module_tier compares the work and runs four small budgets; module_assumptions keeps both programs
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their loop opens (each affine in its round: both ends below the limit), the checks in the round gone; constants in the instructions (add, sub, cmp); one-byte columns widened to four where the tier begins, its loads and stores of four bytes only. roots 14.0 to 14.0 ms, knapsack 38.8 to 16.5, matmul 48.6 to 25.7
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values in registers (x20-x28 too, the frame's read again where it ends), whole numbers integers by their facts, the message's fields and lists' columns read once, invariants made before inner loops; where anything does not hold it gives up to the executor at the instruction (pure_run_rest) and the generic code goes on. roots 22.9 to 14.0 ms, knapsack 1,030 to 38.8, matmul 908 to 48.6; module_tier checks random handlers against the executor
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often (the bank queries' instructions as before, within 0.4%)
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DENSE list answers by position without becoming FLAT: its keys counted once per change of them (full: a key is its position; else ranks by word). knapsack 1,880 to 1,029 ms, matmul 2,284 to 908 (023 stage 1)
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knapsack, sort, join, words, matmul, BFS), each against the C one would write, in one process with the same inputs and answers; PURE_AHEAD=0 to measure the code without reading ahead
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executor), so their list's columns are there; the keys a list's bits reach none without bits, so one compare asks both; has's rare ways out of the line: a seen edge 14 to 11 instructions, BFS core 8.6 to 7.4 ms (022)
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