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Author SHA1 Message Date
Miodrag Milanovic b1fda43bcd chores: first pass of fixes spaces to tabs 2026-08-21 14:43:33 +02:00
Miodrag Milanovic a55d987b3a chores: Add spaces to tabs fix for mixed 2026-08-21 14:33:46 +02:00
nella a34d3baae9 Merge pull request #6131 from DanielMBouyou/fix/arith_tree-narrow-intermediate-truncation 
arith_tree: don't fold a chain link narrower than its consumer
 2026-08-21 09:12:00 +00:00
Daniel M'BOUYOU 25c7053114 arith_tree: add regression tests for truncating narrow chain links 
#6130 fixed arith_tree so that a chain link narrower than its consumer
is left out of the tree, and added an equivalence regression for the
exact failing shape. Cover what that test does not: structural checks
that the narrow link survives as its own cell, on both the raw $add
path and the alumacc $alu path, and a mixed case where a wider chain
consuming the truncated link as a leaf still folds and stays
equivalent.

Signed-off-by: Daniel M'BOUYOU <[email protected]>
 2026-08-21 10:38:58 +02:00
Nick Allison 144c707b78 Merge pull request #6117 from Zaneham/check-cells-backends 
Error rather than silently drop $check cells in write_smt2 and write_btor
 2026-08-20 20:16:36 +00:00
Nick Allison 5c0100c45e Merge branch 'main' into check-cells-backends 2026-08-20 13:07:22 -06:00
Miodrag Milanović 2fd290ad47 Merge pull request #6134 from SimonEbner/main 
Retry read operations interrupted by EINTR
 2026-08-20 16:24:26 +00:00
Lofty 4ad3dc46ad Merge pull request #6137 from YosysHQ/lofty/abc-refactor-14 
synth_gatemate: remove classic ABC mapping for LUTs
 2026-08-20 10:33:07 +00:00
Zane Hambly bec454465f Merge branch 'main' into check-cells-backends 2026-08-20 21:42:56 +12:00
Lofty be69f88e55 Merge pull request #6135 from YosysHQ/lofty/abc-refactor-13 
abc: remove -sop
 2026-08-20 09:34:26 +00:00
nella 59a3826bbd Merge pull request #6130 from DanielMBouyou/arith-tree-narrow-link 
arith_tree: do not flatten a chain link narrower than its consumer
 2026-08-20 08:40:25 +00:00
Lofty 030e13569c synth_gatemate: remove classic ABC mapping for LUTs 2026-08-20 09:33:47 +01:00
Lofty caceaaa2bb abc: remove -sop 2026-08-19 12:52:10 +01:00
Lofty c92678eb26 Merge pull request #6103 from YosysHQ/lofty/abc-refactor-9 
synth_*: remove classic ABC mapping
 2026-08-19 11:15:54 +00:00
Simon Bucher b98d7b6853 Gracefully handle EINTR during read. 
EINTR should be retried.
 2026-08-19 10:46:41 +00:00
Lofty 4cb0a5e2f2 synth: remove classic ABC mapping for LUTs 2026-08-19 11:43:00 +01:00
Lofty 1f72d02f39 synth_microchip: remove classic ABC mapping 2026-08-19 11:43:00 +01:00
Lofty ee75cd3ea0 synth_lattice: remove classic ABC mapping 2026-08-19 11:43:00 +01:00
Lofty dd4b6689e8 synth_intel: remove classic ABC mapping 2026-08-19 11:43:00 +01:00
Lofty 3a148d7633 synth_gowin: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 737560c471 synth_fabulous: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 5fe16f60f9 synth_efinix: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 6df15312cc synth_anlogic: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 873bed6300 synth_achronix: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 63fbb31921 synth_sf2: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 8a01ff15f4 synth_quicklogic: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 6824ee065a synth_nanoxplore: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty c053706540 synth_analogdevices: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 086cd8e685 synth_xilinx: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty 44bab117d7 synth_ice40: remove classic ABC mapping 2026-08-19 11:42:59 +01:00
Lofty fc6433bbae Merge pull request #6132 from YosysHQ/lofty/abc-refactor-12 
synth_greenpak4, nlutmap: remove
 2026-08-19 10:19:14 +00:00
Lofty 2578106368 Merge pull request #6126 from YosysHQ/lofty/abc-refactor-11 
synth_coolrunner2: remove
 2026-08-19 09:59:59 +00:00
Lofty edb411a622 synth_greenpak4, nlutmap: remove 2026-08-19 10:56:16 +01:00
nella 9eb62484dc Merge pull request #6129 from YosysHQ/nella/flock-improvements 
liberty_cache: fix WASI build, add Windows lock, harden scl cache [sc-793]
 2026-08-18 10:28:33 +00:00
Daniel M Bouyou e5c56c6400 arith_tree: do not flatten a chain link narrower than its consumer 
sole_chainable_consumer folded a cell into its consumer without ever
comparing widths. A link truncates its result at its own Y width, and that
truncation is invisible only when the consumer truncates at least as hard,
since (x % 2**link) % 2**parent == x % 2**parent holds only when
parent <= link. When the consumer is wider, the carry the link discards
becomes observable, and flattening the chain silently recovers it.

For

  module top(input [7:0] a, b, c, output [8:0] o);
    wire [7:0] t = a + b;
    assign o = t + c;
  endmodule

synth -arith_tree computes a + b + c where the design specifies
((a + b) % 256) + c. The two differ by 256 whenever a + b overflows,
for example at a=169 b=135 c=7.

alumacc already guards the structurally identical $macc merge using
macc_may_overflow(); arith_tree carried no equivalent check.

Add two cases to tests/arith_tree/arith_tree_equiv.ys: equiv_double_neg
widened to a 5 bit result, and a dedicated equiv_narrow_intermediate.
 2026-08-18 12:06:48 +02:00
Miodrag Milanović 850de483cd Merge pull request #6128 from YosysHQ/update_abc 
Update ABC as per 2026-08-18
 2026-08-18 09:55:14 +00:00
Miodrag Milanovic ed9bdc7665 Update ABC as per 2026-08-18 2026-08-18 11:37:56 +02:00
nellaandMike Inouye 38b6e5e76c fix WASI, harden scl cache locking. 
Co-authored-by: Mike Inouye <[email protected]>
 2026-08-18 11:31:57 +02:00
Lofty 541d240930 synth_coolrunner2: remove 2026-08-18 10:04:45 +01:00
Mike Inouye 977e55315d fix macOS build 
Signed-off-by: Mike Inouye <[email protected]>
 2026-08-17 22:05:09 +00:00
Mike Inouye 7c3becfbcd add file lock on liberty scl cache 
Signed-off-by: Mike Inouye <[email protected]>
 2026-08-17 21:18:34 +00:00
Lofty 621d943ac8 Merge pull request #6101 from YosysHQ/lofty/abc-refactor-10 
read_xaiger2: remove
 2026-08-17 17:42:25 +00:00
nella 598862f45b Merge pull request #6125 from YosysHQ/nella/share-sat-effort 
share: limit SAT effort [sc-750]
 2026-08-17 12:18:28 +00:00
nella 8c5789903a Merge pull request #6124 from YosysHQ/nella/scl-cache-arg 
scl_cache: add pass to control merged SCL caching for ABC [sc-771]
 2026-08-17 12:18:18 +00:00
nella 027677d43b Move scl cache args to libcache, fix -disable. 2026-08-17 12:37:49 +02:00
nella bbcbdcec09 Add test. 2026-08-17 12:20:51 +02:00
nella ce0785a01b Limit SAT effort. 2026-08-17 12:20:43 +02:00
nella cd029c0638 Add solve without model. 2026-08-17 12:19:07 +02:00
nella 5efa8187ad Add control over scl cache. 2026-08-17 10:49:45 +02:00
nella dbe5b7c03f Merge pull request #6118 from Emin017/emin/key-abc-scl-cache 
liberty_cache: key SCL cache on ABC executable mtime and size
 2026-08-15 20:08:27 +00:00