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1028 Commits

Author SHA1 Message Date
Eddie Hung f9aae90e7a Merge remote-tracking branch 'origin/eddie/abc9_refactor' into eddie/abc9_required 2020-01-12 15:19:41 -08:00
Eddie Hung 295e241c07 cleanup 2020-01-11 17:28:24 -08:00
Eddie Hung 79db12f238 Merge remote-tracking branch 'origin/master' into eddie/abc9_refactor 2020-01-11 17:26:25 -08:00
Eddie Hung 58ab9f6021 write_xaiger: create holes_sigmap before modifications 2020-01-11 17:25:32 -08:00
Eddie Hung 1ccee4b95e write_xaiger: sort holes by offset as well as port_id 2020-01-11 11:49:57 -08:00
Eddie Hung f24de88f38 log_debug() for abc9_{arrival,required} times 2020-01-10 17:13:27 -08:00
Miodrag Milanovic 6888799c75 remove whitespace 2020-01-10 12:38:03 +01:00
Miodrag Milanovic 2bcd55f1ae Export wire properties as well in EDIF 2020-01-10 12:33:58 +01:00
Eddie Hung ceabd5bc39 write_xaiger: cleanup 2020-01-09 14:03:43 -08:00
Eddie Hung 3177437224 write_xaiger: cope with abc9_arrival as string of ints 2020-01-09 10:05:03 -08:00
Eddie Hung 7532416cd7 write_xaiger: cleanup holes generation 2020-01-08 18:27:09 -08:00
Eddie Hung 5f7349f26d write_xaiger: holes PIs only if whitebox 2020-01-08 15:40:37 -08:00
Eddie Hung 8d0cc654a4 Stray log_module 2020-01-06 15:14:38 -08:00
Eddie Hung aa58472a29 Revert "write_xaiger to pad, not abc9_ops -prep_holes" 
This reverts commit b5f60e055d.
 2020-01-06 13:34:45 -08:00
Eddie Hung 921ff0f5e3 Merge remote-tracking branch 'origin/xaig_dff' into eddie/abc9_refactor 2020-01-06 12:04:08 -08:00
Eddie Hung 886c5c5883 write_xaiger: make more robust, update doc 2020-01-06 10:23:04 -08:00
Eddie Hung 19ec54f956 write_aiger: make more robust 2020-01-06 10:18:59 -08:00
Eddie Hung b5f60e055d write_xaiger to pad, not abc9_ops -prep_holes 2020-01-05 10:20:24 -08:00
Eddie Hung 6556a1347a Fix when -dff not given 2020-01-04 09:17:01 -08:00
Eddie Hung 930f03e883 Call -prep_holes before aigmap; fix topo ordering 2020-01-03 15:38:18 -08:00
Eddie Hung a819656972 WIP 2020-01-03 14:59:55 -08:00
Eddie Hung 559f3379e8 Preserve topo ordering from -prep_holes to write_xaiger 2020-01-03 14:37:58 -08:00
Eddie Hung bb70915fb8 WIP 2020-01-03 13:21:56 -08:00
Eddie Hung e1f494ab1d WIP 2020-01-03 13:08:52 -08:00
Eddie Hung e62eb02c1d Restore write_xaiger's holes_mode since port_id order causes QoR 
regressions inside abc9
 2020-01-03 12:32:05 -08:00
Eddie Hung dedea5a58d Cleanup 2020-01-02 17:25:14 -08:00
Eddie Hung c28bea0382 Merge remote-tracking branch 'origin/xaig_dff' into eddie/abc9_refactor 2020-01-02 15:57:35 -08:00
Eddie Hung 07feedfa73 write_xaiger: get rid of external_bits dict 2020-01-02 15:32:58 -08:00
Eddie Hung 8e507bd807 abc9 -keepff -> -dff; refactor dff operations 2020-01-02 12:36:54 -08:00
Eddie Hung 11577b46fc Get rid of (* abc9_keep *) in write_xaiger too 2020-01-01 08:38:23 -08:00
Eddie Hung ac808c5e2a attributes.count() -> get_bool_attribute() 2020-01-01 08:33:32 -08:00
Eddie Hung 96db05aaef parse_xaiger to not take box_lookup 2019-12-31 17:06:03 -08:00
Eddie Hung cac7f5d82e Do not re-order carry chain ports, just precompute iteration order 2019-12-31 16:12:40 -08:00
Eddie Hung 134e70e8e7 write_xaiger: be more precise with ff_bits, remove ff_aig_map 2019-12-31 10:21:11 -08:00
Eddie Hung 3798fa3bea Retry getting rid of write_xaiger's holes_mode 2019-12-31 09:59:17 -08:00
Eddie Hung 436c96e2fb Revert "Get rid of holes_mode" 
This reverts commit 7997e2a90f.
 2019-12-30 23:29:14 -08:00
Eddie Hung 7997e2a90f Get rid of holes_mode 2019-12-30 20:15:09 -08:00
Eddie Hung b42b64e8ed Move Pass::call() out of abc9_ops into abc9 2019-12-30 19:23:54 -08:00
Eddie Hung 88334cab89 Cleanup 2019-12-30 18:49:33 -08:00
Eddie Hung 65baefecd3 Rid unnecessary if 2019-12-30 18:26:35 -08:00
Eddie Hung e2bbe33a88 Get rid of holes_mode 2019-12-30 18:24:29 -08:00
Eddie Hung b50de28c04 Add abc9_ops -prep_holes 2019-12-30 18:00:49 -08:00
Eddie Hung 0735572934 write_xaiger to use scratchpad for stats; cleanup abc9 2019-12-30 15:35:33 -08:00
Eddie Hung d1fccd5a2d Remove unused 2019-12-30 14:35:52 -08:00
Eddie Hung 3cbbae251f Call "proc" if processes inside whiteboxes 2019-12-30 14:33:05 -08:00
Eddie Hung 405e974fe5 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-12-30 14:31:42 -08:00
Eddie Hung d7ada66497 Add "synth_xilinx -dff" option, cleanup abc9 2019-12-30 14:13:16 -08:00
Eddie Hung 237415e78c write_xaiger: inherit port ordering from original module 2019-12-27 16:44:18 -08:00
Eddie Hung a56d6970f2 Revert "Merge pull request #1598 from YosysHQ/revert-1588-eddie/xaiger_cleanup" 
This reverts commit 92654f73ea, reversing
changes made to 3e14ff1667.
 2019-12-27 16:05:58 -08:00
Eddie Hung 9e6632c40a Merge branch 'master' of github.com:YosysHQ/yosys 2019-12-27 15:37:26 -08:00
Eddie Hung 3d4644804e write_xaiger: simplify c{i,o}_bits 2019-12-27 15:37:17 -08:00
David Shah df31ade3b3
Revert "write_xaiger: only instantiate each whitebox cell type once" 2019-12-27 23:25:20 +00:00
Eddie Hung dd503a5f3f Really fix it! 2019-12-27 15:18:55 -08:00
Eddie Hung 49881b4468 write_xaiger: fix arrival times for non boxes 2019-12-27 11:30:18 -08:00
Eddie Hung 6eadd4390a write_xaiger to opt instead of just clean whiteboxes 2019-12-23 08:35:53 -08:00
Eddie Hung a75e08c709 write_xaiger: only instantiate each whitebox cell type once 2019-12-20 13:07:24 -08:00
Eddie Hung 10e82e103f
Revert "Optimise write_xaiger" 2019-12-20 12:05:45 -08:00
Eddie Hung 5f50e4f112 Cleanup xaiger, remove unnecessary complexity with inout 2019-12-17 15:45:26 -08:00
Eddie Hung e82a9bc642 Do not sigmap 2019-12-17 00:03:03 -08:00
Eddie Hung 2e71130700 Revert "Use sigmap signal" 
This reverts commit 42f990f3a6.
 2019-12-17 00:00:07 -08:00
Eddie Hung 42f990f3a6 Use sigmap signal 2019-12-16 16:49:42 -08:00
Eddie Hung b19fc8839b Skip $inout transformation if not a PI 2019-12-16 14:39:13 -08:00
Eddie Hung 78c0246d4a Revert "write_xaiger: use sigmap bits more consistently" 
This reverts commit 6c340112fe.
 2019-12-16 14:35:35 -08:00
Eddie Hung 6c340112fe write_xaiger: use sigmap bits more consistently 2019-12-16 10:21:57 -08:00
Eddie Hung 91467938c4 Stray newline 2019-12-06 17:08:19 -08:00
Eddie Hung f2ac36de4a write_xaiger to inst each cell type once, do not call techmap/aigmap 2019-12-06 17:06:10 -08:00
Eddie Hung 1f96de04c9 Fix writing non-whole modules, including inouts and keeps 2019-12-06 16:19:10 -08:00
Eddie Hung a682a3cf93 write_xaiger to support part-selected modules again 2019-12-05 17:54:43 -08:00
Eddie Hung c6ee2fb482 Cleanup 2019-12-03 19:21:47 -08:00
Eddie Hung df52bc80d8 write_xaiger to consume abc9_init attribute for abc9_flops 2019-12-03 18:47:44 -08:00
Eddie Hung 419ca5c207 Revert "Fold loop" 
This reverts commit a30d5e1cc3.
 2019-11-27 21:55:56 -08:00
Eddie Hung 449b1d2c6f Add comment, use sigmap 2019-11-27 13:20:12 -08:00
Eddie Hung 403214f44d Revert "Fold loop" 
This reverts commit da51492dbc.
 2019-11-27 12:35:25 -08:00
Eddie Hung 5e67df38ed latch -> box 2019-11-26 22:59:05 -08:00
Eddie Hung a30d5e1cc3 Fold loop 2019-11-26 21:57:50 -08:00
Eddie Hung 68717dd03b Do not sigmap keep bits inside write_xaiger 2019-11-26 21:57:50 -08:00
Eddie Hung 7136cee6b4 xaiger: do not promote output wires 2019-11-26 21:55:37 -08:00
Eddie Hung 99702efaba xaiger: do not promote output wires 2019-11-26 19:03:02 -08:00
Eddie Hung da51492dbc Fold loop 2019-11-25 15:43:37 -08:00
Eddie Hung 7f0914a408 Do not sigmap keep bits inside write_xaiger 2019-11-25 15:42:07 -08:00
Eddie Hung 81548d1ef9 write_xaiger back to working with whole modules only 2019-11-22 16:52:17 -08:00
Eddie Hung 8ef241c6f4 Revert "write_xaiger to not use module POs but only write outputs if driven" 
This reverts commit 0ab1e496dc.
 2019-11-22 13:24:28 -08:00
Eddie Hung 0ab1e496dc write_xaiger to not use module POs but only write outputs if driven 2019-11-21 16:19:28 -08:00
Eddie Hung 929beda19c abc9 to support async flops $_DFF_[NP][NP][01]_ 2019-11-19 16:57:26 -08:00
Eddie Hung 09ee96e8c2 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-11-19 15:40:39 -08:00
whitequark 3c643c57df write_verilog: add -extmem option, to write split memory init files. 
Some toolchains (in particular Quartus) are pathologically slow if
a large amount of assignments in `initial` blocks are used.
 2019-11-18 01:27:21 +00:00
Clifford Wolf cd44826d50 Use cell name for btor bad state props when it is a public name 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-11-14 11:57:38 +01:00
Makai Mann d88cc139a0 Add an info string symbol for bad states in btor backend 2019-11-11 16:40:51 -08:00
Clifford Wolf 5110a34dd7 Fix write_aiger bug added in 524af21 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-11-04 14:25:13 +01:00
Clifford Wolf 81876a3734
Merge pull request #1393 from whitequark/write_verilog-avoid-init 
write_verilog: do not print (*init*) attributes on regs
 2019-10-27 10:25:01 +01:00
Clifford Wolf f02623abb5 Bugfix in smtio vcd handling of $-identifiers 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-10-23 00:04:34 +02:00
Eddie Hung b2e34f932a Rename $currQ to $abc9_currQ 2019-10-07 15:31:43 -07:00
Eddie Hung 90a954bb9c Get rid of latch_* in write_xaiger 2019-10-07 13:09:13 -07:00
Eddie Hung 1504ca2cd9 Remove "write_xaiger -zinit" 2019-10-07 11:58:49 -07:00
Eddie Hung e1554b56dd Add comment on default flop init 2019-10-07 11:56:17 -07:00
Eddie Hung d9fba95177 Get rid of output_port lookup 2019-10-07 11:49:06 -07:00
Eddie Hung 3879ca1398 Do not require changes to cells_sim.v; try and work out comb model 2019-10-05 22:55:18 -07:00
Eddie Hung 3c6e5d82a6 Error if $currQ not found 2019-10-05 09:06:13 -07:00
Eddie Hung 7959e9d6b2 Fix merge issues 2019-10-04 17:21:14 -07:00
Eddie Hung 7a45cd5856 Merge remote-tracking branch 'origin/eddie/abc_to_abc9' into xaig_dff 2019-10-04 16:58:55 -07:00
Eddie Hung aae2b9fd9c Rename abc_* names/attributes to more precisely be abc9_* 2019-10-04 11:04:10 -07:00
Eddie Hung 549d6ea467 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-10-03 10:55:23 -07:00
Clifford Wolf 2ed2e9c3e8 Change smtbmc "Warmup failed" status to "PREUNSAT" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-10-03 14:59:07 +02:00
Clifford Wolf a84a2d74c7 Fix btor back-end to use "state" instead of "input" for undef init bits 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-10-02 12:48:04 +02:00
Eddie Hung 1b96d29174 No need to punch ports at all 2019-09-30 17:02:20 -07:00
Eddie Hung e529872b01 Remove need for $currQ port connection 2019-09-30 16:33:40 -07:00
Eddie Hung eecfdda614 Cleanup 2019-09-30 15:24:03 -07:00
Eddie Hung 74678227c7 Use a cell_cache to instantiate once rather than opt_merge call 2019-09-30 13:21:07 -07:00
Eddie Hung a6994c5f16 scc call on active module module only, plus cleanup 2019-09-30 12:57:19 -07:00
Eddie Hung bd8356799a Use derived module 2019-09-30 12:34:28 -07:00
Eddie Hung 1123c09588 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-09-29 19:39:12 -07:00
Eddie Hung 8474c5b366
Merge pull request #1359 from YosysHQ/xc7dsp 
DSP inference for Xilinx (improved for ice40, initial support for ecp5)
 2019-09-29 11:26:22 -07:00
Eddie Hung f3e150d9a5 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-09-29 09:21:51 -07:00
Miodrag Milanović ce0631c371
Merge pull request #1413 from YosysHQ/mmicko/backend_binary_out 
Support binary files for backends, fixes #1407
 2019-09-29 10:37:34 +02:00
Eddie Hung 79b6edb639 Big rework; flop info now mostly in cells_sim.v 2019-09-28 23:48:17 -07:00
Miodrag Milanovic 0c380f0855 Add aiger and protobuf backends binary support 2019-09-28 09:51:48 +02:00
Miodrag Milanovic d0493925ec Support binary files for backends, fixes #1407 2019-09-28 09:36:18 +02:00
Eddie Hung cfa6dd61ef Use abc_mergeability attr for "r" extension 2019-09-27 18:41:43 -07:00
Eddie Hung dc154c39a8 Fix infinite recursion 2019-09-27 17:45:49 -07:00
Eddie Hung 8f5710c464 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-09-27 15:14:31 -07:00
Aman Goel 5eebfabe42 Corrects btor2 backend 2019-09-27 12:40:17 -04:00
Eddie Hung 44374b1b2b "abc_padding" attr for blackbox outputs that were padded, remove them later 2019-09-23 21:58:40 -07:00
Eddie Hung c340fbfab2 Force $inout.out ports to begin with '$' to indicate internal 2019-09-23 21:58:04 -07:00
whitequark 4f426c2ac4 write_verilog: do not print (*init*) attributes on regs. 
If an init value is emitted for a reg, an (*init*) attribute is never
necessary, since it is exactly equivalent. On the other hand, some
tools that consume Verilog (ISE, Vivado, Quartus) complain about
(*init*) attributes because their interpretation differs from Yosys.

All (*init*) attributes that would not become reg init values anyway
are emitted as before.
 2019-09-22 16:52:06 +00:00
Eddie Hung 2d9484c12c When two boxes connect to each other, need not be a (* keep *) 2019-09-19 15:40:28 -07:00
Clifford Wolf 779ce3537f Add "write_aiger -L" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-09-18 13:33:02 +02:00
Clifford Wolf b88d2e5f30 Fix stupid bug in btor back-end 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-09-18 11:56:14 +02:00
Sean Cross c1b628508d backends: smt2: use $(CXX) variable for compiler 
The Makefile assumes the compiler is called `gcc`, which isn't always
true.  In fact, if we're building on msys2 or msys2-64, the compiler
is called `i686-w64-mingw32-g++` or `x86_64-w64-mingw32-g++`.

Use the variable instead of hardcoding the name, to fix building on
these systems.

Signed-off-by: Sean Cross <sean@xobs.io>
 2019-09-08 15:47:09 +08:00
Eddie Hung e9bb252e77 Recognise built-in types (e.g. $_DFF_*) 2019-08-30 20:15:09 -07:00
Eddie Hung 3247442bf9 Revert "Revert "Fix omode which inserts an output if none exists (otherwise abc9 breaks)"" 
This reverts commit 8f0c1232d7.
 2019-08-28 17:34:00 -07:00
Eddie Hung 082a01954b Revert "Output "h" extension only if boxes" 
This reverts commit 399ac760ff.
 2019-08-28 17:30:54 -07:00
Eddie Hung 399ac760ff Output "h" extension only if boxes 2019-08-21 11:31:18 -07:00
Eddie Hung 8f0c1232d7 Revert "Fix omode which inserts an output if none exists (otherwise abc9 breaks)" 
This reverts commit 8182cb9d91.
 2019-08-21 11:29:40 -07:00
Eddie Hung 8182cb9d91 Fix omode which inserts an output if none exists (otherwise abc9 breaks) 2019-08-20 21:30:16 -07:00
Eddie Hung 4d123b7638 Revert "Only xaig if GetSize(output_bits) > 0" 
This reverts commit 7b646101e9.
 2019-08-20 21:22:38 -07:00
Eddie Hung 7b646101e9 Only xaig if GetSize(output_bits) > 0 2019-08-20 20:57:13 -07:00
Eddie Hung f1a206ba03 Revert "Remove sequential extension" 
This reverts commit 091bf4a18b.
 2019-08-20 18:17:14 -07:00
Eddie Hung 091bf4a18b Remove sequential extension 2019-08-20 18:16:37 -07:00
Eddie Hung 1b5d2de1d4 Do not sigmap! 2019-08-20 15:23:26 -07:00
Eddie Hung c00d72cdb3 Minor refactor 2019-08-20 14:47:58 -07:00
Eddie Hung 45d4b33f0c Output i/o/h extensions even if no boxes or flops 2019-08-19 13:17:31 -07:00
Eddie Hung 91687d3fea Add (* abc_arrival *) attribute 2019-08-19 12:33:24 -07:00
Eddie Hung 2f4e0a5388 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-08-19 10:07:27 -07:00
Eddie Hung 10c69f71e9 Use %d 2019-08-19 09:16:20 -07:00
Eddie Hung 24c934f1af Merge branch 'eddie/abc9_refactor' into xaig_dff 2019-08-16 16:51:22 -07:00
Eddie Hung 4fe307f1bc Compute abc_scc_break and move CI/CO outside of each abc9 2019-08-16 15:41:17 -07:00
Clifford Wolf 0c5db07cd6 Fix various NDEBUG compiler warnings, closes #1255 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-08-13 13:29:03 +02:00
Clifford Wolf f54bf1631f
Merge pull request #1258 from YosysHQ/eddie/cleanup 
Cleanup a few barnacles across codebase
 2019-08-10 09:52:14 +02:00
Clifford Wolf 05c46a31dc
Merge pull request #1263 from ucb-bar/firrtl_err_on_unsupported_cell 
FIRRTL error on unsupported cell
 2019-08-10 09:47:10 +02:00
Eddie Hung 6d77236f38 substr() -> compare() 2019-08-07 12:20:08 -07:00
Eddie Hung 7164996921 RTLIL::S{0,1} -> State::S{0,1} 2019-08-07 11:12:38 -07:00
Eddie Hung e6d5147214 Merge remote-tracking branch 'origin/master' into eddie/cleanup 2019-08-07 11:11:50 -07:00
Jim Lawson 5e8a98c8fd Merge branch 'master' into firrtl_err_on_unsupported_cell 
# Conflicts:
#	backends/firrtl/firrtl.cc
 2019-08-07 10:14:45 -07:00
Eddie Hung 3090da2d98 Run "clean -purge" on holes_module in its own design 2019-08-07 09:54:27 -07:00
Clifford Wolf 48f7682e32
Merge pull request #1240 from ucb-bar/firrtl-properties+pow+xnor 
Support explicit FIRRTL properties for better accommodation of FIRRTL/Verilog semantic differences.
 2019-08-07 12:31:32 +02:00
David Shah dee8f61781
Merge pull request #1241 from YosysHQ/clifford/jsonfix 
Improved JSON attr/param encoding
 2019-08-07 10:40:38 +01:00
Eddie Hung e38f40af5b Use IdString::begins_with() 2019-08-06 16:42:25 -07:00
Eddie Hung a6bc9265fb RTLIL::S{0,1} -> State::S{0,1} 2019-08-06 16:23:37 -07:00
Eddie Hung 046e1a5214 Use State::S{0,1} 2019-08-06 16:22:47 -07:00
Eddie Hung 3486235338 Make liberal use of IdString.in() 2019-08-06 16:18:18 -07:00
Clifford Wolf 023086bd46 Add $_NMUX_, add "abc -g cmos", add proper cmos cell costs 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-08-06 04:47:55 +02:00
Clifford Wolf 0917a5cf72
Merge pull request #1238 from mmicko/vsbuild_fix 
Visual Studio build fix
 2019-08-02 17:07:39 +02:00
Miodrag Milanovic 28b7053a01 Fix formatting for msys2 mingw build using GetSize 2019-08-01 17:27:34 +02:00
Clifford Wolf 15fae357f6 Implement improved JSON attr/param encoding 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-08-01 12:34:52 +02:00
Jim Lawson 3b8c917025 Support explicit FIRRTL properties for better accommodation of FIRRTL/Verilog semantic differences. 
Use FIRRTL spec vlaues for definition of FIRRTL widths.
Added support for '$pos`, `$pow` and `$xnor` cells.
Enable tests/simple/operators.v since all operators tested there are now supported.
Disable FIRRTL tests of tests/simple/{defvalue.sv,implicit_ports.v,wandwor.v} since they currently generate FIRRTL compilation errors.
 2019-07-31 09:27:38 -07:00
Miodrag Milanovic 35d28de478 Visual Studio build fix 2019-07-31 09:10:24 +02:00
Jim Lawson 7e298084e4 Call log_error() instead of log_warning() on unsupported cell type in FIRRTL backend. 2019-07-24 13:33:16 -07:00
Clifford Wolf 927f0caa9d
Merge pull request #1203 from whitequark/write_verilog-zero-width-values 
write_verilog: dump zero width constants correctly
 2019-07-18 15:31:27 +02:00
Clifford Wolf 56c00e871f Remove old $pmux_safe code from write_verilog 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-07-17 11:49:04 +02:00
whitequark 4ff44d85a5 write_verilog: dump zero width constants correctly. 
Before this commit, zero width constants were dumped as "" (empty
string). Unfortunately, 1364-2005 5.2.3.3 indicates that an empty
string is equivalent to "\0", and is 8 bits wide, so that's wrong.

After this commit, a replication operation with a count of zero is
used instead, which is explicitly permitted per 1364-2005 5.1.14,
and is defined to have size zero. (Its operand has to have a non-zero
size for it to be legal, though.)

Fixes #948 (again).
 2019-07-16 21:00:09 +00:00
N. Engelhardt ab4b9e8db4 smt: handle failure of setrlimit syscall 2019-07-15 23:33:18 +08:00
Clifford Wolf 9112850800
Merge pull request #1172 from whitequark/write_verilog-Sa-as-qmark 
write_verilog: write RTLIL::Sa aka - as Verilog ?
 2019-07-11 07:25:52 +02:00
Eddie Hung 375fcbe511 abc_flop to also get topologically sorted 2019-07-10 20:26:09 -07:00
Eddie Hung ea6ffea2cd Fix clk_pol for FD*_1 2019-07-10 20:10:20 -07:00
Eddie Hung e603d719d6 Fix spacing 2019-07-10 19:04:22 -07:00
Eddie Hung 4a995c5d80 Change how to specify flops to ABC again 2019-07-10 17:54:56 -07:00
Eddie Hung a092c48f03 Use split_tokens() 2019-07-10 17:34:51 -07:00
Eddie Hung 052060f109 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-07-10 16:05:41 -07:00
Clifford Wolf 6dd33be7ce
Merge pull request #1175 from whitequark/write_verilog-fix-case-attr-position 
write_verilog: fix placement of case attributes
 2019-07-09 22:51:25 +02:00
whitequark 37bb6b5e96 write_verilog: fix placement of case attributes. NFC. 2019-07-09 19:14:03 +00:00
whitequark 6a29e1f5b7 write_verilog: write RTLIL::Sa aka - as Verilog ?. 
Currently, the only ways (determined by grepping for regex \bSa\b) to
end up with RTLIL::Sa in a netlist is by reading a Verilog constant
with ? in it as a part of case, or by running certain FSM passes.
Both of these cases should be round-tripped back to ? in Verilog.
 2019-07-09 18:35:49 +00:00
Eddie Hung 00d8a9dce2
Merge pull request #1170 from YosysHQ/eddie/fix_double_underscore 
Rename __builtin_bswap32 -> bswap32
 2019-07-09 10:22:57 -07:00
Eddie Hung 5a0f2e43c7 Rename __builtin_bswap32 -> bswap32 2019-07-09 09:35:09 -07:00
whitequark 628437b01c verilog_backend: dump attributes on SwitchRule. 
This appears to be an omission.
 2019-07-08 15:11:29 +00:00
whitequark 55c1f40277 verilog_backend: dump attributes on CaseRule, as comments. 
Attributes are not permitted in that position by Verilog grammar.
 2019-07-08 12:48:50 +00:00
whitequark 93bc5affd3 Allow attributes on individual switch cases in RTLIL. 
The parser changes are slightly awkward. Consider the following IL:

    process $0
      <point 1>
      switch \foo
        <point 2>
        case 1'1
          assign \bar \baz
          <point 3>
          ...
        case
      end
    end

Before this commit, attributes are valid in <point 1>, and <point 3>
iff it is immediately followed by a `switch`. (They are essentially
attached to the switch.) But, after this commit, and because switch
cases do not have an ending delimiter, <point 3> becomes ambiguous:
the attribute could attach to either the following `case`, or to
the following `switch`. This isn't expressible in LALR(1) and results
in a reduce/reduce conflict.

To address this, attributes inside processes are now valid anywhere
inside the process: in <point 1> and <point 3> a part of case body,
and in <point 2> as a separate rule. As a consequence, attributes
can now precede `assign`s, which is made illegal in the same way it
is illegal to attach attributes to `connect`.

Attributes are tracked separately from the parser state, so this
does not affect collection of attributes at all, other than allowing
them on `case`s. The grammar change serves purely to allow attributes
in more syntactic places.
 2019-07-08 11:34:58 +00:00
Eddie Hung 10524064e9 write_xaiger to treat unknown cell connections as keep-s 2019-07-02 19:14:30 -07:00
Eddie Hung 69f4c039ce Safe side: all flops have different mergeability class 2019-07-02 12:21:03 -07:00
Eddie Hung a31e17182d Refactor and cope with new abc_flop format 2019-07-01 11:50:34 -07:00
Eddie Hung 699d8e3939 Merge remote-tracking branch 'origin/master' into xaig_dff 2019-07-01 10:44:42 -07:00
Eddie Hung 38d8806bd7 Add generic __builtin_bswap32 function 2019-06-28 09:59:47 -07:00
Eddie Hung 524af21317 Also fix write_aiger for UB 2019-06-28 09:55:07 -07:00
Eddie Hung 36e2eb06bb Fix more potential for undefined behaviour due to container invalidation 2019-06-28 09:51:43 -07:00
Eddie Hung 9398921af1 Refactor for one "abc_carry" attribute on module 2019-06-27 16:07:14 -07:00
Eddie Hung 6c256b8cda Merge origin/master 2019-06-27 11:20:15 -07:00
Eddie Hung 080a5ca536 Improve debugging message for comb loops 2019-06-26 20:02:38 -07:00
Eddie Hung cec2292b0b Merge remote-tracking branch 'origin/master' into xaig 2019-06-24 20:01:43 -07:00
Eddie Hung 7903ebe3e0 Carry in/out box ordering now move to end, not swap with end 2019-06-22 14:18:42 -07:00
Eddie Hung 1abe93e48d Merge remote-tracking branch 'origin/master' into xaig 2019-06-21 17:43:29 -07:00
Eddie Hung fddb027cab Replace assert with error message 2019-06-21 17:18:04 -07:00