whitequark
c34d7b13f4
ast: avoid intermediate wires/assigns when lowering to AST_MEMINIT.
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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
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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
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-10-14 05:24:31 +02:00
David Shah
e46e8753c8
frontends/ast: code style
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Signed-off-by: David Shah <dave@ds0.me>
2019-10-03 09:55:43 +01:00
David Shah
5501d9090a
sv: Fix typedefs in blocks
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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
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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
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Signed-off-by: David Shah <dave@ds0.me>
2019-10-03 09:54:14 +01:00
David Shah
e70e4afb60
sv: Fix typedefs in packages
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Signed-off-by: David Shah <dave@ds0.me>
2019-10-03 09:54:14 +01:00
David Shah
c962951612
sv: Fix typedef parameters
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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
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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
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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
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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
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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 ...)"
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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"
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This reverts commit c851dc1310f54bf1631f
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
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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
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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
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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
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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
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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
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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
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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
