mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-07-12 07:26:39 +00:00
Code Activity
8678 commits 120 branches 56 tags 56 MiB
Commit graph

461 commits

Author SHA1 Message Date
whitequark
c34d7b13f4 ast: avoid intermediate wires/assigns when lowering to AST_MEMINIT. 
Before this commit, every initial assignment to a memory generated
two wires and four assigns in a process. For unknown reasons (I did
not investigate), large amounts of assigns cause quadratic slowdown
later in the AST frontend, in processAst/removeSignalFromCaseTree.
As a consequence, common and reasonable Verilog code, such as:
  reg [`WIDTH:0] mem [0:`DEPTH];
  integer i; initial for (i = 0; i <= `DEPTH; i++) mem[i] = 0;
took extremely long time to be processed; around 80 s for a 8-wide,
8192-deep memory.

After this commit, initial assignments where address and/or data are
constant (after `generate`) do not incur the cost of intermediate
wires; expressions like `mem[i+1]=i^(i<<1)` are considered constant.
This results in speedups of orders of magnitude for common memory
sizes; it now takes merely 0.4 s to process a 8-wide, 8192-deep
memory, and only 5.8 s to process a 8-wide, 131072-deep one.

As a bonus, this change also results in nontrivial speedups later
in the synthesis pipeline, since pass sequencing issues meant that
all of these intermediate wires were subject to transformations such
as width reduction, even though they existed solely to be constant
folded away in `memory_collect`.
 2020-02-07 00:41:54 +00:00
David Shah
22c967e35e ast: Add support for $sformatf system function 
Signed-off-by: David Shah <dave@ds0.me>
 2020-01-19 21:20:17 +00:00
Eddie Hung
1ac1697e15 Stray log_dump 2019-12-11 16:59:00 -08:00
Eddie Hung
af36943cb9 Preserve size of $genval$-s in for loops 2019-12-11 16:52:37 -08:00
Clifford Wolf
e84cedfae4 Use "(id)" instead of "id" for types as temporary hack 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-10-14 05:24:31 +02:00
David Shah
e46e8753c8 frontends/ast: code style 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:55:43 +01:00
David Shah
5501d9090a sv: Fix typedefs in blocks 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:54:45 +01:00
David Shah
af25585170 sv: Add support for memories of a typedef 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:54:14 +01:00
David Shah
30d2326030 sv: Add support for memory typedefs 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:54:14 +01:00
David Shah
e70e4afb60 sv: Fix typedefs in packages 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:54:14 +01:00
David Shah
c962951612 sv: Fix typedef parameters 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:54:14 +01:00
David Shah
f6b5e47e40 sv: Switch parser to glr, prep for typedef 
Signed-off-by: David Shah <dave@ds0.me>
 2019-10-03 09:54:14 +01:00
Eddie Hung
0a1af434e8 Fix for svinterfaces 2019-09-30 14:52:04 -07:00
Eddie Hung
08b55a20e3 module->derive() to be lazy and not touch ast if already derived 2019-09-30 14:11:01 -07:00
Clifford Wolf
8da0888bf6 Fix handling of read_verilog config in AstModule::reprocess_module(), fixes #1360 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-09-20 12:16:20 +02:00
Clifford Wolf
25b08b1afd Fix handling of range selects on loop variables, fixes #1372 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-09-16 11:25:37 +02:00
Clifford Wolf
4b7202c9c2
Merge pull request #1350 from YosysHQ/clifford/fixsby59 
Properly construct $live and $fair cells from "if (...) assume/assert (s_eventually ...)"
 2019-09-05 18:14:28 +02:00
Clifford Wolf
25e5fbac90 Properly construct $live and $fair cells from "if (...) assume/assert (s_eventually ...)" 
Fixes https://github.com/YosysHQ/SymbiYosys/issues/59

Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-09-02 22:56:38 +02:00
Eddie Hung
83ffec26cb Remove newline 2019-08-29 09:08:58 -07:00
Eddie Hung
6510297712 Restore non-deferred code, deferred case to ignore non constant attr 2019-08-29 09:02:10 -07:00
Eddie Hung
34ae29295d read_verilog -defer should still populate module attributes 2019-08-28 19:59:09 -07:00
Eddie Hung
fe1b2337fd Do not propagate mem2reg attribute through to result 2019-08-22 16:57:59 -07:00
Eddie Hung
a6776ee35e mem2reg to preserve user attributes and src 2019-08-21 13:36:01 -07:00
Jakob Wenzel
24971fda87 handle real values when deriving ast modules 2019-08-19 14:17:36 +02:00
Eddie Hung
12c692f6ed Revert "Merge pull request #1280 from YosysHQ/revert-1266-eddie/ice40_full_adder" 
This reverts commit c851dc1310, reversing
changes made to f54bf1631f.
 2019-08-12 12:06:45 -07:00
David Shah
f9020ce2b3
Revert "Wrap SB_LUT+SB_CARRY into $__ICE40_CARRY_WRAPPER" 2019-08-10 17:14:48 +01:00
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
Eddie Hung
9776084eda Allow whitebox modules to be overwritten 2019-08-07 16:40:24 -07:00
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
Eddie Hung
ee7c970367 IdString::str().substr() -> IdString::substr() 2019-08-06 19:08:33 -07:00
Clifford Wolf
f1f5b4e375 Fix handling of functions/tasks without top-level begin-end block, fixes #1231 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-08-06 18:06:14 +02:00
Jakob Wenzel
e2fe8e0a4f initialize noblackbox and nowb in AstModule::clone 2019-07-22 10:37:40 +02:00
whitequark
b1f400aeb8 genrtlil: emit \src attribute on CaseRule. 2019-07-08 12:29:08 +00:00
Clifford Wolf
ec4565009a Add "read_verilog -pwires" feature, closes #1106 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-06-19 14:38:50 +02:00
Clifford Wolf
211d85cfcc Fixes and cleanups in AST_TECALL handling 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-06-07 12:41:09 +02:00
Clifford Wolf
a3bbc5365b Merge branch 'pr_elab_sys_tasks' of https://github.com/udif/yosys into clifford/pr983 2019-06-07 12:08:42 +02:00
Stefan Biereigel
816082d5a1
Merge branch 'master' into wandwor 2019-05-27 19:07:46 +02:00
Stefan Biereigel
cd12f2ddcf remove leftovers from ast data structures 2019-05-27 18:01:44 +02:00
Stefan Biereigel
ed625a3102 move wand/wor resolution into hierarchy pass 2019-05-27 18:00:22 +02:00
Clifford Wolf
92dde319fc
Merge pull request #1044 from mmicko/invalid_width_range 
Give error instead of asserting for invalid range, fixes #947
 2019-05-27 13:26:12 +02:00
Miodrag Milanovic
84ffb21708 Give error instead of asserting for invalid range, fixes #947 2019-05-27 12:25:18 +02:00
Miodrag Milanovic
34417ce55f Added support for unsized constants, fixes #1022 
Includes work from @sumit0190 and @AaronKel
 2019-05-27 11:42:10 +02:00
Stefan Biereigel
85de9d26c1 fix assignment of non-wires 2019-05-23 17:55:56 +02:00
Stefan Biereigel
fd003e0e97 fix indentation across files 2019-05-23 13:57:27 +02:00
Stefan Biereigel
075a48d3fa implementation for assignments working 2019-05-23 13:57:27 +02:00
Stefan Biereigel
9df04d7e75 make lexer/parser aware of wand/wor net types 2019-05-23 13:57:27 +02:00
Clifford Wolf
752553d8e9
Merge pull request #946 from YosysHQ/clifford/specify 
Add specify parser
 2019-05-06 20:57:15 +02:00
Clifford Wolf
d187be39d6 Merge branch 'master' of github.com:YosysHQ/yosys into clifford/fix968 2019-05-06 15:41:13 +02:00