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703 Commits

Author SHA1 Message Date
Wilson Snyder
0f324c8309 Merge branch 'master' into develop-v5 2022-06-04 11:59:49 -04:00
Wilson Snyder
67f7432dd7 Commentary (#3436). 2022-06-04 08:37:42 -04:00
Wilson Snyder
ada58465b2 Add -f<optimization> options to replace -O<letter> options (#3436). 2022-06-03 20:43:16 -04:00
Wilson Snyder
173f57c636 Changed --no-merge-const-pool to -fno-merge-const-pool (#3436). 2022-06-03 19:41:59 -04:00
Geza Lore
b51f887567
Perform VCD tracing in parallel when using --threads (#3449) 
VCD tracing is now parallelized using the same thread pool as the model.
We achieve this by breaking the top level trace functions into multiple
top level functions (as many as --threads), and after emitting the time
stamp to the VCD file on the main thread, we execute the tracing
functions in parallel on the same thread pool as the model (which we
pass to the trace file during registration), tracing into a secondary
per thread buffer. The main thread will then stitch (memcpy) the buffers
together into the output file.

This makes the `--trace-threads` option redundant with `--trace`, which
now only affects `--trace-fst`. FST tracing uses the previous offloading
scheme.

This obviously helps a lot in VCD tracing performance, and I have seen
better than Amdahl speedup, namely I get 3.9x on XiangShan 4T (2.7x on
OpenTitan 4T).
 2022-05-29 19:08:39 +01:00
Geza Lore
599d23697d
IEEE compliant scheduler (#3384) 
This is a major re-design of the way code is scheduled in Verilator,
with the goal of properly supporting the Active and NBA regions of the
SystemVerilog scheduling model, as defined in IEEE 1800-2017 chapter 4.

With this change, all internally generated clocks should simulate
correctly, and there should be no more need for the `clock_enable` and
`clocker` attributes for correctness in the absence of Verilator
generated library models (`--lib-create`).

Details of the new scheduling model and algorithm are provided in
docs/internals.rst.

Implements #3278
 2022-05-15 16:03:32 +01:00
Wilson Snyder
e02f97854c Deprecate 'vluint64_t' and similar types (#3255). 2022-03-27 15:27:40 -04:00
Geza Lore
b1b5b5dfe2 Improve run-time profiling 
The --prof-threads option has been split into two independent options:
1. --prof-exec, for collecting verilator_gantt and other execution
related profiling data, and
2. --prof-pgo, for collecting data needed for PGO

The implementation of execution profiling is extricated from
VlThreadPool and is now a separate class VlExecutionProfiler. This means
--prof-exec can now be used for single-threaded models (though it does
not measure a lot of things just yet). For consistency VerilatedProfiler
is renamed VlPgoProfiler. Both VlExecutionProfiler and VlPgoProfiler are
in verilated_profiler.{h/cpp}, but can be used completely independently.

Also re-worked the execution profile format so it now only emits events
without holding onto any temporaries. This is in preparation for some
future optimizations that would be hindered by the introduction of function
locals via AstText.

Also removed the Barrier event. Clearing the profile buffers is not
notably more expensive as the profiling records are trivially
destructible.
 2022-03-27 15:57:30 +02:00
Wilson Snyder
4eaa6fdd06 Internals: Use python pass appropriately. No functional change intended. 2022-03-26 15:57:52 -04:00
Wilson Snyder
d3b63b2653 Fix error if file not found 2022-02-09 21:56:22 -05:00
Wilson Snyder
ca42be982c Copyright year update. 2022-01-01 08:26:40 -05:00
Wilson Snyder
899de9a282 Add --lib-create, similar to --protect-lib but without protections (#3200). 2021-11-14 09:39:31 -05:00
Wilson Snyder
2560fc867f verilator_gantt: Fix reading broken /cpu/procinfo reports 2021-10-02 11:10:43 -04:00
Wilson Snyder
9029da5ab8 Add profile-guided optmization of mtasks (#3150). 2021-09-26 22:51:11 -04:00
Wilson Snyder
741bb5328e verilator_gantt: Fix argument report omitting last digits 2021-09-24 21:11:15 -04:00
Wilson Snyder
8ab51dbf22 Verilator_gantt: remove ASCII graphics 2021-09-24 08:48:20 -04:00
Wilson Snyder
fd4595d6b4 verilator_gantt: Add eval count to report 2021-09-24 08:48:20 -04:00
github action
204804ae52 Apply 'make format' 2021-09-24 03:00:42 +00:00
Wilson Snyder
c2819923c5 Verilator_gantt now shows the predicted mtask times, eval times, and additional statistics. 2021-09-23 22:59:36 -04:00
Wilson Snyder
97d8d32049 Commentary 2021-09-17 18:52:12 -04:00
Wilson Snyder
f1b8b1d99b Format: perltidy spacing cleanup. No functional change. 2021-09-08 18:45:25 -04:00
Wilson Snyder
4b274a8d4d Convert verilator_gantt to python 2021-09-08 08:16:31 -04:00
Wilson Snyder
c678e7ec3e Format: perltidy spacing cleanup. No functional change. 2021-09-07 23:50:28 -04:00
Wilson Snyder
d09b6a7d2c Include processor information in verilator_gantt data file. 2021-09-05 11:56:28 -04:00
Wilson Snyder
35eac0c457 Commentary: Fix profcfunc naming. 2021-09-05 11:33:20 -04:00
Wilson Snyder
cac0b0f316 Tests: Fix t_gantt_io 2021-09-04 16:51:55 -04:00
Wilson Snyder
1cb8091125 verilator_profcfunc: Also allow eval_step. 2021-09-04 12:28:26 -04:00
Wilson Snyder
18c543f2f2 Convert verilator_difftree to Python 2021-09-04 09:31:22 -04:00
Wilson Snyder
1ee46ac5e1 Convert verilator_profcfunc to python. 2021-09-04 08:21:09 -04:00
Wilson Snyder
56dc66d842 Fix verilator_profcfunc profile accounting (#3115). 2021-09-03 19:59:10 -04:00
Geza Lore
cdeb6e792f Add --instr-count-dpi option, change default to 200 
This replaces the former static AstNode::INSTR_COUNT_DPI, and makes it
user adjustable to fit the design.

Fixes #3068.
 2021-07-25 16:40:12 +01:00
Wilson Snyder
36599133bf Add --prof-c to pass profiling to compiler (#3059). 2021-07-07 19:12:52 -04:00
Geza Lore
ec1c112791
Remove deprecated --inhibit-sim (#3035) 2021-06-21 12:38:42 -04:00
Geza Lore
9eafca5e28
Remove deprecated --no-relative-cfuncs (#3024) 2021-06-16 23:17:43 -04:00
Wilson Snyder
31121141db Convert pipe filter example to python 2021-06-13 12:03:53 -04:00
Geza Lore
c207e98306
Implement a distinct constant pool (#3013) 
What previously used to be per module static constants created in
V3Table and V3Prelim are now merged globally within the whole model and
emitted as part of a separate constant pool. Members of the constant
pool are global variables which are declared lazily when used (similar to
loose methods).
 2021-06-13 15:05:55 +01:00
Geza Lore
5555f20bd2 Improve ccache-report 2021-06-09 19:14:11 +01:00
github action
c238d3da76 Apply clang-format 2021-06-06 23:57:41 +00:00
Geza Lore
0edf1f0c94
Add ccache-report target to standard Makefile (#3011) 
Using the standard model Makefile, when in addition to an explicit
target, the target 'ccache-report' is also given, a summary of ccache
hits/misses during this invocation of 'make' will be prited at the end
of the build.
 2021-06-07 00:56:30 +01:00
Wilson Snyder
1e89392e76 Add --expand-limit argument (#3005). 2021-06-06 10:27:01 -04:00
Geza Lore
38cab569ed
Add --reloop-limit argument (#2960) 
Add --reloop-limit argument
 2021-05-15 18:04:40 +01:00
Wilson Snyder
cf7f49e139 Docs: Fix cross-references 2021-04-13 09:25:11 -04:00
Wilson Snyder
adce7ecf4b Documentation has been rewritten into a book format. 2021-04-11 18:55:06 -04:00
Udi Finkelstein
23c243bb82
Add support for null ports (#2875) 2021-04-09 10:39:46 -04:00
Wilson Snyder
efc116323b Commentary 2021-04-06 18:07:28 -04:00
Àlex Torregrosa
a29ac44af9
Add FST SystemC tracing (#2806) 2021-04-06 16:18:58 -04:00
Wilson Snyder
5658d7238d Commentary 2021-04-03 13:11:26 -04:00
Udi Finkelstein
0ea5af40c5
Add PINNOTFOUND warning in place of "Pin not found" error (#2868) 2021-04-01 18:17:42 -04:00
Wilson Snyder
c62546c761 Add --coverage-max-width (#2853). 2021-03-29 18:54:51 -04:00
Wilson Snyder
02d82978e5 Avoid quoting + to appease cygwin bash/gcc --gdbbt (#2856) 2021-03-26 22:13:55 -04:00
Wilson Snyder
96f9f8558b Mark --no-relative-cfuncs as scheduled for deprecation. 2021-03-17 18:59:45 -04:00
Wilson Snyder
5da9368032 Update contributors. 2021-03-17 18:39:32 -04:00
Wilson Snyder
dfab80fab1 Fix false TIMESCALEMOD on generate-ignored instances (#2838). 2021-03-16 22:52:29 -04:00
Wilson Snyder
12eb4e85ac Changed TIMESCALEMOD from error into a warning. (#2838) 2021-03-16 21:58:15 -04:00
Wilson Snyder
daf5174134 Commentary 2021-03-14 21:26:56 -04:00
Wilson Snyder
8350c381c2 Add EOFNEWLINE warning when missing a newline at EOF. 2021-03-14 21:23:48 -04:00
Wilson Snyder
5022e81af7 Commentary 2021-03-12 14:14:21 -05:00
Wilson Snyder
c99f01b7fe Converted Asciidoc documentation into reStructuredText (RST) format. 2021-03-12 13:52:47 -05:00
Wilson Snyder
2cde7b0128 Commentary 2021-03-12 08:50:24 -05:00
Wilson Snyder
2cad22a22a
Add simulation context (VerilatedContext) (#2660). (#2813) 
**   Add simulation context (VerilatedContext) to allow multiple fully independent
      models to be in the same process.  Please see the updated examples.
**   Add context->time() and context->timeInc() API calls, to set simulation time.
      These now are recommended in place of the legacy sc_time_stamp().
 2021-03-07 11:01:54 -05:00
Wilson Snyder
caa9c99837 Commentary 2021-03-07 08:28:13 -05:00
Wilson Snyder
7cc7afca04 Commentary 2021-03-02 17:39:16 -05:00
Wilson Snyder
fec5e69ec5 --inhibit-sim is planned for deprecation, file a bug if this is still being used. 2021-02-28 09:26:06 -05:00
Wilson Snyder
e44563fddc Tests: Use vl_time_stamp64 where reasonable 2021-02-16 20:14:30 -05:00
Yutetsu TAKATSUKASA
f2a7f30b09
Commentary: In docs remove +I (#2789) 2021-02-15 08:40:49 -05:00
Morten Borup Petersen
843ae2955e
Commentary on incorrectly specified debug level (#2777) 
As seen at https://github.com/verilator/verilator/blob/master/src/V3Options.cpp#L1202
setting --debug enables a debug level of 3.
 2021-02-03 14:38:34 -05:00
Wilson Snyder
3c79e00d24 Commentary (#2764) 2021-01-24 20:24:23 -05:00
Julien Margetts
a11700271f
Add LATCH and NOLATCH warnings (#1609) (#2740). 2021-01-05 14:26:01 -05:00
Wilson Snyder
bd602d0e2d Copyright year update 2021-01-01 10:29:54 -05:00
Wilson Snyder
b04a1caeac In warnings, rename cells to instances to match IEEE 2020-12-12 22:43:55 -05:00
Krzysztof Bieganski
5e7b0d526d
Support 'randc' as alias to 'rand' (#2680) 
* Add alias 'randc' to 'rand'

* Make the 'RANDC' warning; add tests
 2020-12-09 19:17:30 -05:00
Wilson Snyder
3c680ddf22 Tests: Test some warnings without tests. 2020-12-07 20:30:16 -05:00
Wilson Snyder
47eeef485d Report UNUSED on parameters, localparam and genvars (#2627). 2020-12-07 19:49:50 -05:00
Wilson Snyder
74ef35d3b3 Support $cast and new CASTCONST warning. 2020-12-05 22:58:36 -05:00
Wilson Snyder
8582aed66a Add --top option as alias of --top-module. 2020-12-05 16:58:17 -05:00
Wilson Snyder
665e8edaff Support $monitor and $strobe. 2020-11-29 11:31:38 -05:00
Wilson Snyder
cf2810db8b Change -sv option to select 1800-2017 instead of 1800-2005. 2020-11-27 21:49:47 -05:00
Wilson Snyder
103ba1fb6d Commentary 2020-11-20 21:48:11 -05:00
Wilson Snyder
b684995292 Support $random and $urandom seeds. 2020-11-19 21:32:33 -05:00
Wilson Snyder
c64cc989f0 verilator_gantt: Show CPU physical info. 2020-11-14 12:22:15 -05:00
Wilson Snyder
5d3482734a Fix precision in verilator_gantt. 2020-11-13 18:51:45 -05:00
Wilson Snyder
87b2adb6a1 With --debug, turn off address space layout randomization. 2020-11-12 18:49:49 -05:00
Wilson Snyder
6dfce882a1 Support $exit as alias of $finish 2020-11-10 22:49:48 -05:00
Wilson Snyder
f4ed367850 Internals: Remove verilator_difftree old cleanups. 2020-10-15 21:36:35 -04:00
Wilson Snyder
7c05033b79 Add verilator_gantt warning when too few cpus (#2590) 2020-10-09 21:28:00 -04:00
Wilson Snyder
069eb97eca SystemC 2.3.0 or newer (SYSTEMC_VERSION >= 20111121) is now required. 2020-08-29 10:45:47 -04:00
Wilson Snyder
96a959154a Commentary #2518. 2020-08-29 10:22:50 -04:00
Wilson Snyder
be8f1a25c6 Commentary (#2510) 2020-08-24 08:58:33 -04:00
Wilson Snyder
f4a72946eb Support $urandom, $urandom_range without stability. 2020-08-23 08:42:50 -04:00
Wilson Snyder
2abbd5c145 Convert unnamed error to new PKGNODECL error. 2020-08-22 16:37:49 -04:00
Wilson Snyder
2118038cb9 Commentary 2020-08-15 14:22:50 -04:00
Yutetsu TAKATSUKASA
953a442827
Support hierarchical verilation using protect lib (#2206) 2020-08-15 09:43:53 -04:00
Wilson Snyder
1bd1e21a69 Change --enable-prec11 to --enable-prec11-final and give stronger warning 2020-07-11 08:56:40 -04:00
Wilson Snyder
61ff7039b4 Commentary (#2439) 2020-06-28 18:37:42 -04:00
Wilson Snyder
0af971292e Commentary (#2437) 2020-06-27 22:35:31 -04:00
Wilson Snyder
43a2fa080a For maintainers, set fill-column. 2020-06-27 21:44:32 -04:00
Geza Lore
23e4a0f784 Improve documentation 2020-06-20 05:17:46 +01:00
Wilson Snyder
fa828ac9ba Commentary (#2419) 2020-06-14 10:47:17 -04:00
Wilson Snyder
6de78d58fa Add new UNSUPPORTED error code to replace most previous Unsupported: messages. 2020-06-09 19:20:16 -04:00
Wilson Snyder
8b647f0977 Fix error on UNPACKED in parser. (#1541) 2020-06-02 08:00:37 -04:00