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5969 Commits

Author SHA1 Message Date
whitequark 5fe0ffe30f proc_prune: new pass. 
The proc_prune pass is similar in nature to proc_rmdead pass: while
proc_rmdead removes branches that never become active because another
branch preempts it, proc_prune removes assignments that never become
active because another assignment preempts them.

Genrtlil contains logic similar to the proc_prune pass, but their
purpose is different: genrtlil has to prune assignments to adapt
the semantics of blocking assignments in HDLs (latest assignment
wins) to semantics of assignments in RTLIL processes (assignment in
the most specific case wins). On the other hand proc_prune is
a general purpose RTLIL simplification that benefits all frontends,
even those not using the Yosys AST library.

The proc_prune pass is added to the proc script after proc_rmdead,
since it gives better results with fewer branches.
 2019-07-09 09:30:58 +00:00
Clifford Wolf 030483ffb9
Merge pull request #1159 from btut/fix/1090_segfault_cell_and_wire 
Throw runtime exception when trying to convert inexistend C++ object to Python
 2019-07-05 11:57:41 +02:00
Benedikt Tutzer 3a1a41bdb1 Throw runtime exception when trying to convert a c++-pointer to a 
python-object in case the pointer is a nullptr to avoid a segfault.

Fixes #1090
 2019-07-04 14:20:13 +02:00
Eddie Hung de26328130
Merge pull request #1156 from YosysHQ/eddie/fix_abc9_unknown_cell 
write_xaiger to treat unknown cell connections as keep-s
 2019-07-03 09:43:00 -07:00
Clifford Wolf e38b2ac648
Merge pull request #1147 from YosysHQ/clifford/fix1144 
Improve specify dummy parser
 2019-07-03 12:30:37 +02:00
Clifford Wolf 1f173210eb Fix tests/various/specify.v 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-07-03 11:25:05 +02:00
Clifford Wolf ba36567908 Some cleanups in "ignore specify parser" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-07-03 11:22:10 +02:00
Clifford Wolf 224ad8fe33
Merge pull request #1154 from whitequark/manual-sync-always 
manual: explain the purpose of `sync always`
 2019-07-03 10:45:29 +02:00
Eddie Hung 10524064e9 write_xaiger to treat unknown cell connections as keep-s 2019-07-02 19:14:30 -07:00
Eddie Hung 9c556e3c02 Add test 2019-07-02 19:13:40 -07:00
Eddie Hung 8455d1f4ff
Merge pull request #1150 from YosysHQ/eddie/script_from_wire 
Add "script -select [selection]" to allow commands to be taken from wires
 2019-07-02 10:20:42 -07:00
whitequark 9251c000e8 manual: explain the purpose of `sync always`. 2019-07-02 17:10:13 +00:00
David Shah 0447794c51
Merge pull request #1153 from YosysHQ/dave/fix_multi_mux 
memory_dff: Fix checking of feedback mux input when more than one mux
 2019-07-02 16:47:54 +01:00
Eddie Hung 81a717e9b7 Update test for Pass::call_on_module() 2019-07-02 08:22:31 -07:00
Eddie Hung f1504696e5 Use Pass::call_on_module() as per @cliffordwolf comments 2019-07-02 08:20:37 -07:00
Eddie Hung 90382a0f6d Update test too 2019-07-02 08:19:23 -07:00
Eddie Hung 02ba85b133 script -select -> script -scriptwire 2019-07-02 08:17:26 -07:00
David Shah d45936fe5f memory_dff: Fix checking of feedback mux input when more than one mux 
Signed-off-by: David Shah <dave@ds0.me>
 2019-07-02 13:35:50 +01:00
Clifford Wolf d206eca03b Fix read_verilog assert/assume/etc on default case label, fixes YosysHQ/SymbiYosys#53 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-07-02 11:36:26 +02:00
Eddie Hung 6282a67332 Space 2019-07-01 11:59:10 -07:00
Eddie Hung 9018f29d54 Move CHANGELOG entry from yosys-0.8 to 0.9 2019-07-01 09:46:56 -07:00
Eddie Hung dda2ec3cc5 Merge branch 'master' into eddie/script_from_wire 2019-07-01 09:46:32 -07:00
Eddie Hung 0067dc44f3 Move abc9 from yosys-0.8 to yosys-0.9 in CHANGELOG 2019-07-01 09:44:53 -07:00
Eddie Hung 7be8551c8d Merge branch 'master' of github.com:YosysHQ/yosys 2019-07-01 09:43:33 -07:00
Eddie Hung 04459cb30a Comment out invalid syntax 2019-06-30 11:48:01 -07:00
Eddie Hung dd8d264bf5 install *_nowide.lut files 2019-06-29 19:37:04 -07:00
Eddie Hung c5563b67c8
Merge pull request #1149 from gsomlo/gls-1098-abcext-fixup 
Make abc9 pass aware of optional ABCEXTERNAL override
 2019-06-28 15:02:50 -07:00
Eddie Hung fd2fb4f0f0 Merge branch 'master' into eddie/script_from_wire 2019-06-28 14:56:34 -07:00
Eddie Hung 0ec7c09756 autotest.sh to define _AUTOTB when test_autotb 2019-06-28 14:56:22 -07:00
Eddie Hung 64f6b0c747 Try command in another module 2019-06-28 13:41:32 -07:00
Eddie Hung 4e1a4927e2 Add to CHANGELOG 2019-06-28 13:39:06 -07:00
Eddie Hung 06971385fa Support ability for "script -select" to take commands from wires 2019-06-28 13:36:33 -07:00
Eddie Hung 2c6aaef3db Add test 2019-06-28 13:32:09 -07:00
Eddie Hung b3f162e94e Replace log_assert() with meaningful log_error() 2019-06-28 12:54:44 -07:00
Eddie Hung 728839d6ca Remove peepopt call in synth_xilinx since already in synth -run coarse 2019-06-28 12:53:38 -07:00
Gabriel L. Somlo 8cb3655ecd Make abc9 pass aware of optional ABCEXTERNAL override 
Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
 2019-06-28 14:56:16 -04:00
Eddie Hung b5f1bd0df1 Add missing CHANGELOG entries 2019-06-28 11:16:15 -07:00
Eddie Hung 4a2a93aa06 Fix spacing 2019-06-28 11:10:36 -07:00
Eddie Hung da5f830395
Merge pull request #1098 from YosysHQ/xaig 
"abc9" pass for timing-aware techmapping (experimental, FPGA only, no FFs)
 2019-06-28 10:59:03 -07:00
Eddie Hung dc677c791d Add test from #1144, and try reading without '-specify' flag 2019-06-28 10:12:48 -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 03705f69f4 Update synth_ice40 -device doc to be relevant for -abc9 only 2019-06-28 09:49:01 -07:00
Eddie Hung 3f87575cb6 Disable boxing of ECP5 dist RAM due to regression 2019-06-28 09:46:36 -07:00
Eddie Hung 0318860b93 Add write address to abc_scc_break of ECP5 dist RAM 2019-06-28 09:45:48 -07:00
Eddie Hung b9ddee0c87 Fix DO4 typo 2019-06-28 09:45:40 -07:00
Clifford Wolf 74945dd738
Merge pull request #1146 from gsomlo/gls-test-abc-ext 
tests: use optional ABCEXTERNAL when specified
 2019-06-28 10:30:31 +02:00
Clifford Wolf af74409749 Improve specify dummy parser, fixes #1144 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-06-28 10:21:16 +02:00
Clifford Wolf 1c7ce251f3
Merge pull request #1046 from bogdanvuk/master 
Optimizing DFFs whose initial value prevents their value from changing
 2019-06-28 08:30:18 +02:00