25d50bb2af
VHDL only build support
2024-06-17 13:29:11 +02:00
54bf9ccf06
Add initial support for Verific without additional YosysHQ patch
2024-06-17 13:29:11 +02:00
b593f5c01c
Update the overview comment in `ast.h`
2024-06-10 16:38:39 +02:00
b0ab1cf8c3
Fix memory leak in verific file parsing.
...
Signed-off-by: Mike Inouye <mikeinouye@google.com>
2024-06-07 22:51:28 +00:00
1a54e8d47b
Merge pull request #4379 from QuantamHD/fix_verific
...
frontend: Fixes verific import around range order
2024-05-09 11:52:34 +02:00
82a4a87c97
Fixes error with vector indicies of the form [2:7] [-12:7]
...
Make sure that we correctly adjust the value to align it to a zero
indexed list with lsb = 0
Signed-off-by: Ethan Mahintorabi <ethanmoon@google.com>
2024-05-08 20:29:47 +00:00
c039da2ec1
renames variables for more code clairty
...
Signed-off-by: Ethan Mahintorabi <ethanmoon@google.com>
2024-05-08 01:09:52 +00:00
a2c1b268d9
frontend: Fixes verific import around range order
...
Test Case
```
module packed_dimensions_range_ordering (
input wire [0:4-1] in,
output wire [4-1:0] out
);
assign out = in;
endmodule : packed_dimensions_range_ordering
module instanciates_packed_dimensions_range_ordering (
input wire [4-1:0] in,
output wire [4-1:0] out
);
packed_dimensions_range_ordering U0 (
.in (in),
.out(out)
);
endmodule : instanciates_packed_dimensions_range_ordering
```
```
// with verific, does not pass formal
module instanciates_packed_dimensions_range_ordering(in, out);
input [3:0] in;
wire [3:0] in;
output [3:0] out;
wire [3:0] out;
assign out = { in[0], in[1], in[2], in[3] };
endmodule
// with surelog, passes formal
module instanciates_packed_dimensions_range_ordering(in, out);
input [3:0] in;
wire [3:0] in;
output [3:0] out;
wire [3:0] out;
assign out = in;
endmodule
```
Signed-off-by: Ethan Mahintorabi <ethanmoon@google.com>
2024-05-08 01:00:06 +00:00
df95ea824b
read_verilog: Add missing defaults for flags
...
Fix for YosysHQ/sby#103
2024-05-07 20:25:36 +02:00
4e6deb53b6
read_aiger: Fix incorrect read of binary Aiger without outputs
...
* Also makes all ascii parsing finish reading lines and adds a small
test
2024-04-29 14:06:58 +01:00
c3ae33da33
Merge pull request #4285 from YosysHQ/typo_fixup
...
Typo fixing
2024-04-25 09:54:48 +12:00
af94123730
verific: expose library name as module attribute
2024-04-15 17:01:07 +02:00
3d5e23e585
Merge pull request #4302 from YosysHQ/vhdl_2019
...
Verific support for VHDL 2019
2024-04-09 18:25:05 +02:00
18afa36acd
Merge pull request #4273 from YosysHQ/vhdl_params
...
verific: Improve import VHDL constants
2024-04-09 18:01:41 +02:00
a5441bc00c
fmt: `FmtPart::{STRING→LITERAL},{CHARACTER→STRING}`.
...
Before this commit, the `STRING` variant inserted a literal string;
the `CHARACTER` variant inserted a string. This commit renames them
to `LITERAL` and `STRING` respectively.
2024-04-02 12:13:22 +02:00
f536de0e0e
Verific support for VHDL 2019
2024-03-28 13:21:55 +01:00
4367e176fb
code split and cleanup
2024-03-19 09:15:04 +01:00
9eebc80170
handle standard types
2024-03-18 10:35:01 +01:00
3eeefd23e3
Typo fixup(s)
2024-03-18 11:09:23 +13:00
7c09fa572e
real number handling and default to string
2024-03-14 10:37:56 +01:00
4279cea33a
improve handling VHDL constants
2024-03-14 10:37:56 +01:00
858eae5572
verific_const: convert VHDL values to RTLIL consts
2024-03-14 10:37:56 +01:00
b16f4900fd
ast/simplify: Interpret hdlname w/o expecting backslash
2024-02-13 21:38:41 +01:00
d8ce26a5ba
read_verilog: correctly format `hdlname` attribute value.
...
The leading slash is not a part of the attribute as it only concerns
public values.
2024-02-13 18:41:53 +00:00
ae7daf99f4
Verific: Add attributes to module instantiation
2024-02-12 09:53:47 +01:00
f09ea16bd1
Resolve struct member multiple dimensions defined in stages with typedef
2024-02-11 11:26:52 -05:00
03f35c3def
Resolve multiple dimensions defined in stages with typedef
2024-02-11 11:26:52 -05:00
e0d3977e19
Add support for $dimensions and $unpacked_dimensions
2024-02-11 11:26:52 -05:00
2125357e76
Add support for $increment
2024-02-11 11:26:52 -05:00
88d9e213cb
Decoding of a few more AST nodes in dumpVlog
2024-02-11 11:26:52 -05:00
39fea32c6e
Add support for packed multidimensional arrays
...
* Generalization of dimensions metadata (also simplifies $size et al.)
* Parsing and elaboration of multidimensional packed ranges
2024-02-11 11:26:52 -05:00
1236bb65b6
read_verilog: don't include empty `opt_sva_label` in span.
...
Consider this SystemVerilog file:
module top(...);
input clk;
input [7:0] data;
input ack;
always @(posedge clk)
if (ack) begin
assert(data != 8'h0a);
end
endmodule
Before this commit, the span for the assert was:
if (ack) begin>
assert(data != 8'h0a)<;
After this commit, the span for the assert is:
if (ack) begin
>assert(data != 8'h0a)<;
This helps editor integrations that only look at the beginning
of the span.
2024-02-08 14:25:35 +00:00
5d3e4c5c7a
Merge pull request #4182 from QuantamHD/fix_aldff
...
verific: Improves aldff inference in verific importer
2024-02-06 08:19:43 +01:00
2422dd6845
Merge pull request #4153 from Coloquinte/blif_delay_constraints
...
Issue a warning instead of a syntax error for blif delay constraints
2024-02-05 15:14:05 +01:00
ff578ecabd
fix formatting
...
Signed-off-by: Ethan Mahintorabi <ethanmoon@google.com>
2024-02-05 07:23:04 +00:00
bc66dfd9ea
verific: Fixes incorrect aldff inference in verific importer
...
The following SV module at HEAD imported with verific,
```systemverilog
module my_module(
input logic [4:0] a,
input logic clk,
input logic enable,
output logic [4:0] z
);
reg [4:0] pipeline_register;
always @(posedge clk) begin
pipeline_register <= enable ? a : pipeline_register;
end
assign z = pipeline_register;
endmodule : my_module
```
results in the following output verilog
```systemverilog
/* Generated by 0.36 */
(* top = 1 *)
(* hdlname = "my_module" *)
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:2.12-2.21" *)
module my_module(clk, enable, a, z);
wire [4:0] _0_;
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:3.25-3.26" *)
input [4:0] a;
wire [4:0] a;
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:4.19-4.22" *)
input clk;
wire clk;
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:5.19-5.25" *)
input enable;
wire enable;
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:6.26-6.27" *)
output [4:0] z;
wire [4:0] z;
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:10.12-12.8" *)
\$aldff #(
.ALOAD_POLARITY(32'd1),
.CLK_POLARITY(32'd1),
.WIDTH(32'd5)
) _1_ (
.AD(5'hxx),
.ALOAD(1'h0),
.CLK(clk),
.D(_0_),
.Q(z)
);
(* src = "/tmp/temp_directory_zTwd0l/my_input.v:11.28-11.58" *)
\$mux #(
.WIDTH(32'd5)
) _2_ (
.A(z),
.B(a),
.S(enable),
.Y(_0_)
);
endmodule
```
Yosys is incorrectly infering aldffs due to an incorrect conversion
of logical 1 and 0 SigBits.
My PR unifies the conversion of Verific::Net objects into SigBits using
Yosys' internal representation of special signals like 0,1,x,z. After
my PR these signals are correctly converted into DFFs.
Signed-off-by: Ethan Mahintorabi <ethanmoon@google.com>
2024-02-05 07:10:25 +00:00
c7bf0e3b8f
Add new `$check` cell to represent assertions with a message.
2024-02-01 20:10:39 +01:00
db1de5fe5d
verific: add option to skip simplifying complex ports
2024-01-30 16:33:44 +01:00
c634d59c18
Issue a warning instead of a syntax error for blif delay constraints
2024-01-23 16:25:16 +00:00
1764c0ee3c
Fix verific clocking when no driver exist
2024-01-18 08:47:04 +01:00
149bcd88ad
Merge pull request #4026 from uis246/fix-format
...
Fix printf formats
2024-01-15 16:04:11 +01:00
5902b2826d
Fix printf formats
2024-01-15 12:07:54 +01:00
1159e48721
write_verilog: emit `initial $display` correctly.
2024-01-11 13:13:04 +01:00
3ed9030eb4
Optionally suppress output from display system tasks in read_verilog
2024-01-11 13:12:53 +01:00
510d137996
fmt: Allow non-constant $display calls in initial blocks
...
These are useful for formal verification with SBY where they can be used
to display solver chosen `rand const reg` signals and signals derived
from those.
The previous error message for non-constant initial $display statements
is downgraded to a log message. Constant initial $display statements
will be shown both during elaboration and become part of the RTLIL so
that the `sim` output is complete.
2024-01-11 13:01:28 +01:00
23cd23efc5
Simplify and correct AST for array slice assignment
...
Corrects sign extension of the right hand side, and hopefully
makes the code simpler to understand.
Fixes #4064
2024-01-10 21:15:00 +01:00
1a2b4759e8
Assign from rvalue via temporary register in nowrshmsk CASE
...
Avoid repeating complex rvalue expressions for each condition.
2024-01-10 20:40:01 +01:00
2cab4ff173
Correction and optimization of nowrshmsk
...
This makes tests/verilog/dynamic_range_lhs.v pass, after ensuring that
nowrshmsk is actually tested.
Stride is extracted from indexing of two-dimensional packed arrays and
variable slices on the form dst[i*stride +: width] = src, and is used
to optimize the generated CASE block.
Also uses less confusing variable names for indexing of lhs wires.
2024-01-10 20:28:36 +01:00
1bbea13f80
Correct hierarchical path names for structs and unions
2024-01-04 17:22:07 +01:00
320e75a3e3
Merge pull request #4065 from daglem/fix-AST_SHIFT-AST_SHIFTX
...
Respect the sign of the right operand of AST_SHIFT and AST_SHIFTX
2023-12-12 11:47:29 +01:00
655921e851
Uncloak array expressions generated by read_verilog -dump_vlog2
...
Explicit conversion of AST_TO_SIGNED, AST_TO_UNSIGNED, and AST_CAST_SIZE
makes it possible to reason about simplified array expressions.
2023-12-11 19:12:35 +01:00
cda470d63e
Respect the sign of the right operand of AST_SHIFT and AST_SHIFTX
...
The $shift and $shiftx cells perform a left logical shift if the second
operand is negative. This change passes the sign of the second operand
of AST_SHIFT and AST_SHIFTX into $shift and $shiftx cells, respectively.
2023-12-11 18:58:34 +01:00
96fecf0716
Revert "Add attributes to module instantiation"
...
This reverts commit 8f207eed1b
2023-12-04 16:37:01 +01:00
8f207eed1b
Add attributes to module instantiation
2023-11-23 11:01:49 +01:00
5fb1264db5
verific: don't try to import attributes from nullptr
2023-11-14 15:05:24 +01:00
93a426cbbf
Merge pull request #4008 from nakengelhardt/mem_libmap_data_attr
...
memory_libmap: look for ram_style attributes on surrounding signals
2023-11-06 16:25:38 +01:00
f06d56d224
Handling non-existing location in verific logs
2023-11-03 08:06:16 +01:00
4eb18e1f07
change verific log callback api
2023-11-01 08:13:27 +01:00
833b67af80
verific: import attributes on ports
...
Co-authored-by: Miodrag Milanović <mmicko@gmail.com>
2023-10-20 18:31:41 +02:00
d473a207a1
Preserve VHDL architecture name in attribute
2023-10-12 09:17:06 +02:00
4ed708836a
verific: Use CellBaseName to identify top modules
2023-10-10 11:51:16 +02:00
8367f06188
ast/simplify: Remove unused in_param code
2023-10-05 22:42:36 -04:00
a54e6f2d1f
Merge pull request #3984 from YosysHQ/module_hdlname
...
verific: save original module name
2023-10-05 19:41:00 +02:00
47a4b790f8
verific: Pass top modules to static elaboration when using hierarchy
2023-10-05 16:51:49 +02:00
23b9e61c47
verific: Pass list of top modules to static elaboration
2023-10-05 16:51:49 +02:00
268fe92d22
verific: save original module name
2023-10-05 11:22:40 +02:00
563a56d9ff
verific: Improve interaction between -L, -work and bind statements
2023-10-03 15:52:01 +02:00
cc843d414f
simplify: Avoid calling fixup_hierarchy_flags on nullptr
...
Compiling on GCC hid this bug as it optimized the nullptr call away as
undefined behavior, but running the SBY tests with a clang build hits
this error.
2023-09-29 12:28:50 +02:00
20024900d9
Merge pull request #3813 from povik/ast-simplify-work-vol2
...
ast/simplify: Remove in_lvalue/in_param simplify() parameters
2023-09-28 11:57:58 +02:00
f193ebdded
Verific: add default parameters to modules
2023-09-27 16:57:18 +02:00
a511976b48
ast/simplify: Retire in_lvalue/in_param arguments to simplify
2023-09-26 13:32:15 +02:00
22b99413e8
ast/simplify: Make in_lvalue/in_param into props of AST nodes
...
Instead of passing around in_lvalue/in_param flags to simplify, we make
the flags into properties of the AST nodes themselves. After the tree
is first parsed, we once do
ast->fixup_hierarchy_flags(true)
to walk the full hierarchy and set the flags to their initial correct
values. Then as long as one is using ->clone(), ->cloneInto() and the
AstNode constructor (with children passed to it) to modify the tree, the
flags will be kept in sync automatically. On the other hand if we are
modifying the children list of an existing node, we may need to call
node->fixup_hierarchy_flags()
to do a localized fixup. That fixup will update the flags on the node's
children, and will propagate the change down the tree if necessary.
clone() doesn't always retain the flags of the subtree being cloned. It
will produce a tree with a consistent setting of the flags, but the
root doesn't have in_param/in_lvalue set unless it's intrinsic to the
type of node being cloned (e.g. AST_PARAMETER). cloneInto() will make
sure the cloned subtree has the flags consistent with the new placement
in a hierarchy.
Add asserts to make sure the old and new way of determining the flags
agree.
2023-09-26 13:32:15 +02:00
10d0e69588
ast/simplify: Make tweaks in advance of big in_lvalue/in_param change
...
The following commit will replace the way in_lvalue/in_param is being
tracked in the simplify code. Make tweaks in advance so that it will
be easier to make the old way and the new way agree.
These changes all should be innocuous.
2023-09-26 13:31:59 +02:00
99a5773911
Merge pull request #3920 from zachjs/asgn-expr
...
sv: support assignments within expressions
2023-09-20 11:30:14 +02:00
18855f23ce
Set src attribute for verific with full info
2023-09-19 12:00:10 +02:00
28e99f2b8c
fix width of post-increment/decrement expressions
2023-09-18 23:46:06 -04:00
7d07615dee
allow attributes in front of ++/-- statements
2023-09-18 23:46:02 -04:00
0e8a4adb59
verific: Update YOSYSHQ_VERIFIC_API_VERSION
2023-09-13 11:32:36 +02:00
27ac912709
Support import of $future_ff
2023-09-13 11:32:36 +02:00
9c255c98b1
unescape string tag attribute
2023-09-13 11:32:36 +02:00
54050a8c16
Basic support for tag primitives
2023-09-13 11:32:36 +02:00
7b134c2a8c
verific - respect order of read and write for rams
2023-09-12 11:56:15 +02:00
4edb1a1921
sv: support assignments within expressions
...
- Add support for assignments within expressions, e.g., `x[y++] = z;` or
`x = (y *= 2) - 1;`. The logic is handled entirely within the parser
by injecting statements into the current procedural block.
- Add support for pre-increment/decrement statements, which are
behaviorally equivalent to post-increment/decrement statements.
- Fix non-standard attribute position used for post-increment/decrement
statements.
2023-09-05 22:27:55 -04:00
2d0fc040cf
ast: Substitute rvalues when parsing out print arguments
...
Apply the local substitutions stemming from process context when parsing
out format arguments to `$display` or other statements.
2023-09-05 21:40:39 +02:00
f9d38253c5
ast: add `PRIORITY` to `$print` cells
2023-08-11 04:46:52 +02:00
992a728ec7
tests: CXX may be e.g. gcc, so use CC and link stdc++ explicitly
2023-08-11 04:46:52 +02:00
9f9561379b
fmt: format %t consistently at initial
2023-08-11 04:46:52 +02:00
c382d7d3ac
fmt: %t/$time support
2023-08-11 04:46:52 +02:00
d5c9953c09
ast: translate $display/$write tasks in always blocks to new $print cell.
2023-08-11 04:46:52 +02:00
9f8e039a4b
ast: use new format string helpers.
2023-08-11 04:46:52 +02:00
f8e2c955fc
read_verilog: set location of AST_TCALL.
...
Useful for error reporting of $display() arguments, etc.
2023-08-11 04:46:52 +02:00
19d5293657
when blackboxing no need to know missing modules
2023-07-31 09:18:54 +02:00
372760af57
spaces to tabs
2023-07-25 09:40:30 +02:00
3989181cd6
Add ability to blackbox modules/units from file while reading with verific
2023-07-25 09:40:30 +02:00
d5d2bf815a
Fix semantic merge conflict in previous two merged PRs
2023-07-21 00:08:10 -04:00
72a4022a10
ast/simplify: Retire 'at_zero' flag
...
Now that all the callsites pass in 'false' for the flag (or propagate
the flag on recursion), we can retire it.
2023-07-20 23:40:19 -04:00
4fceeb3b32
ast/simplify: Use clone_at_zero() for "at_zero" evaluations
...
The correct way of using the 'at_zero' regime of simplify is to perform
the simplification on a cloned AST subtree, otherwise the "at_zero"
evaluation seeps into the main tree.
Move the effect of the 'at_zero' flag to the cloning itself, so that
the simplify flag can be retired. We assume we can rely on id2ast in
the new clone method.
2023-07-20 23:40:19 -04:00
77d4b5230e
ast: Move to a new helper method to print input errors
...
It's a repeating pattern to print an error message tied to an AST
node. Start using an 'input_error' helper for that. Among other
things this is beneficial in shortening the print lines, which tend
to be long.
2023-07-20 23:40:19 -04:00
1ac1b2eed5
ast/simplify: Factor out helper to determine range width
2023-07-20 23:40:19 -04:00
cff53d6d87
Corrected handling of nested typedefs of struct/union
...
This also corrects shadowing of constants in struct/union types.
2023-07-20 23:39:44 -04:00
Miodrag Milanovic
Martin Povišer
Mike Inouye
Ethan Mahintorabi
Krystine Sherwin
George Rennie
N. Engelhardt
Catherine
Dag Lem
Gabriel Gouvine
uis
Jannis Harder
Zachary Snow
Charlotte