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503 Commits

Author SHA1 Message Date
Wilson Snyder 77908447e6 Support scoped `new` (#4199). 2025-07-02 19:54:57 -04:00
Wilson Snyder 916a89761e Add `--work` library-selection option (#5891 partial). 2025-06-29 20:17:27 -04:00
Wilson Snyder 5d32fc56ac Support 'config' parsing, but not functionally 2025-06-28 20:32:19 -04:00
Wilson Snyder b914cda1c7 Internals: cppcheck cleanups. No functional change. 2025-06-28 12:29:41 -04:00
Geza Lore 916d473eff
Internals: Replace unnecessary AstSel::widthp() child node with const in node (#6117) 2025-06-24 11:59:09 -04:00
Geza Lore 277611bcdd
Add DFG binToOneHot pass to generate one-hot decoders (#6096) 
Somewhat commonly, there is code out there that compares an expression (or
variable) against many different constants, e.g. a one-hot decoder:

```systemverilog
  assign oneHot = {x == 3, x == 2, x == 1, x == 0};
```

If the width of the expression is sufficiently large, this can blow up
a GCC pass and take an egregious amount of memory and time to compile.

Adding a new DFG pass that will generate a cheap one-hot decoder:
to compute:

```systemverilog
  wire [$bits(x)-1:0] idx = <the expression being compared many times>
  reg tab [1<<$bits(x)] = '{default: 0};
  reg [$bits(x)-1:0] pre = '0;

  always_comb begin
    tab[pre] = 0;
    tab[idx] = 1;
    pre = idx ; // This assignment marked to avoid a false UNOPFTLAT
  end
```

We then replace the comparisons `x == CONST` with `tab[CONST]`.

This is generally performance neutral, but avoids the compile time and memory
blowup with GCC (128GB+ -> 1GB in one example).

We do not apply this if the comparisons seem to be part of a `COMPARE ?
val : COND` conditional tree, which the C++ compilers can turn into jump
tables.

This enables all XiangShan configurations from RTLMeter to now build with GCC,
so in this patch we enabled those in the nightly runs.
 2025-06-16 23:14:24 +01:00
Paul Swirhun 4925f9ad73
Support 1-bit params with -G and -pvalue (#6051) (#6082) 2025-06-10 17:39:13 -04:00
Wilson Snyder 593da4e38f Internals: Fix missing const. No functional change. 2025-06-04 21:43:30 -04:00
Wilson Snyder 3b632739a8 Internals: Add RequireDType and check for recursive data types, in prep for future parser. 2025-05-17 20:40:03 -04:00
Wilson Snyder cb1661f9d0 Internals: Cleanups (from parse branch). No functional change intended. 2025-04-27 14:17:24 -04:00
Ryszard Rozak 6bb57e4630
Fix assignments with stream expressions and unpacked arrays (#5915) 2025-04-09 06:37:52 -04:00
Wilson Snyder b26a19279a Support simple `checker` blocks (#4066). 2025-04-06 23:42:49 -04:00
Ryszard Rozak 353a4b7b4a
Fix parameters referencing interface fields (#1593) (#5910) 2025-04-02 09:43:12 -04:00
Wilson Snyder 168f0ed9e5 Fix `new this` (#5909). 2025-04-01 08:12:34 -04:00
Geza Lore 59cb53cfbc
Set trigger vector in whole words (#5857) 
Having many triggers still hits a bottleneck in LLVM leading to long
compile times.

Instead of setting triggers bit-wise, set them as a whole 64-bit word
when possible. This improves C++ compile times by ~4x on some large
designs and has minor run-time performance benefit.
 2025-03-14 14:06:51 +00:00
Wilson Snyder 391d4e1c32 Fix segmentation fault on member compare (#5853). 2025-03-12 08:06:34 -04:00
github action 5045bf53df Apply 'make format' 2025-03-08 16:09:07 +00:00
Wilson Snyder 51fcb881d5 Fix error on out-of-range lvalue part select (#5820). 2025-03-08 11:05:58 -05:00
Krzysztof Bieganski b2093b513a
Fix type_id package scope resolution (#5826) 2025-03-06 17:41:27 -05:00
Wilson Snyder 27d3eb5b7b Fix UNOPTFLAT warnings with `--coverage-trace` and always_comb (#5821). 2025-03-02 20:02:55 -05:00
Wilson Snyder ce211ebceb Internals: Make some auto more explicit. No functional change. 2025-03-02 17:01:35 -05:00
Wilson Snyder 3b98db17cc Fix reset of automatic function variables (#5747). 
Also required V3Life optimize CRESET(x) ... ASSIGN(rhs, x) to remove the
extraneous CRESET to avoid creating new UNOPTFLAT situations.
 2025-02-25 22:48:53 -05:00
Wilson Snyder 1857f6399c Fix `$monitor` with dotted references (#5794). 2025-02-21 17:18:49 -05:00
Yilou Wang 6b4183632c
Support Unpacked Structures' Constrained Randomization (#5657) (#5759) 2025-02-03 11:56:00 -05:00
Wilson Snyder 001c098e5a Optimize empty function definition bodies (#5750). 2025-01-25 12:13:25 -05:00
Krzysztof Starecki 69dce205d3
Support multidimensional array access via VPI (#2812) (#5573) 2025-01-09 19:04:26 -05:00
Wilson Snyder 8fbb725f34 Copyright year update. 2025-01-01 08:30:25 -05:00
Wilson Snyder a2f327f729 Support `extern constraint` 2024-12-12 08:16:19 -05:00
Wilson Snyder a247041cab Internals: Refactor 713dab27 to avoid IfaceRef being known in LinkCells 2024-12-03 12:00:56 -05:00
Wilson Snyder 2d71d66cf5 Commentary 2024-11-30 22:35:36 -05:00
Wilson Snyder e44f34dde3 Improve concat lint error & cleanups for future commit. 2024-11-30 18:56:00 -05:00
Wilson Snyder f631587a20 Internals: Rename classOrPackageSkip as kept confusing with member accessor. No functional change. 2024-11-29 16:57:18 -05:00
Wilson Snyder 9f8fcaf827 Fix linking types of typedefs 2024-11-29 16:09:39 -05:00
Wilson Snyder 93090c56ee Fix mis-aliasing of instances with mailbox parameter types (#5632 partial). 2024-11-29 09:20:02 -05:00
Wilson Snyder 7efa0fc82a Internals: Rewrite skipRefp to avoid recursion and fix const-ness. No functional change intended. 2024-11-29 08:10:51 -05:00
Wilson Snyder 8db9db7e25 Internals: Rename same() function. No functional change. 2024-11-28 15:01:58 -05:00
Wilson Snyder a934d965be Internals: Rename isInoutish 2024-11-25 18:25:36 -05:00
Ryszard Rozak 5470cf9fa9
Support randomize size constraints with restrictions (#5582 partial) (#5611) 2024-11-15 10:45:06 -05:00
Wilson Snyder 4257fcf9d0 Change parsing of cells to be non-symbol table sensitive. 2024-11-10 12:08:37 -05:00
Wilson Snyder 4969125e5a Add error on soft constraints of randc 2024-11-09 12:45:55 -05:00
Wilson Snyder 3fae11595a Support `pure constraint`. 2024-11-09 12:05:26 -05:00
github action 08279645ca Apply 'make format' 2024-10-06 22:10:07 +00:00
Wilson Snyder 28ecd8e908 Support `local` and `protected` on `typedef` (#5460). 2024-10-06 18:08:40 -04:00
Wilson Snyder d0ec6092b3 Change package import/export to link post-parsing, prep for later commit. 2024-09-28 20:55:22 -04:00
Wilson Snyder 3ae18af8dd Fix short-circuting on method calls (#5486). 2024-09-24 20:24:27 -04:00
Wilson Snyder 0fe8c73d19 Fix `$fatal` to not be affected by `+verilator+error+limit` (#5135). 2024-09-13 20:45:44 -04:00
Krzysztof Bieganski afb8428db4
Support IEEE-compliant intra-assign delays (#3711) (#5441) 2024-09-06 18:13:52 -04:00
Arkadiusz Kozdra 409efa1249 Internals: Factor out creating clocking event. No functional change. 
Signed-off-by: Arkadiusz Kozdra <akozdra@antmicro.com>
 2024-09-04 07:57:51 -04:00
Krzysztof Bieganski 088862d449
Support appending to queue via `[]` (#5421) 2024-09-02 09:45:47 -04:00
Krzysztof Bieganski b1927e4fb5
Fix infinite recursion due to recursive functions/tasks (#5398) 2024-08-26 12:18:52 -04:00