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525 Commits

Author SHA1 Message Date
Geza Lore 6b9cc8a36e
Internals: Fix AstNodeCoverDecl, it is not a statement (#6280) (#6308) 2025-08-19 11:14:17 +01:00
Wilson Snyder c90f9e53b7
Add ALWNEVER warning, for `always @*` that never execute (#6291) (#6303) 2025-08-18 12:00:53 -04:00
Wilson Snyder 88046c8063 Internals: Rename AstSenTree pointers to sentreep. No functional change intended except JSON. 2025-08-17 19:14:34 -04:00
Geza Lore 6f69c990fd
Internals: Remove AstCondBound and AstNodeCond (#6293) (#6294) 
Fixes #6293
 2025-08-15 15:49:06 -07:00
Ryszard Rozak 7d2b6bd921
Internals: Optimize updates of Vtogcov signals. No functional change intended. (#6110) 2025-08-04 13:29:56 +01:00
Ryszard Rozak f9bdab65f0
Fix coverage of variables of complex types (#6250) 2025-08-01 13:24:18 +02:00
Wilson Snyder 9d38e63269 Remove error on missing forward declarations of typedef in class (#6207). 2025-07-30 09:14:13 -04:00
Wilson Snyder 47c5b220b3 Support non-ansi ports with `wire` before `input` 2025-07-27 17:13:56 -04:00
Paul Swirhun bd2cb989d1 Support bit queue streaming (#5830) (#6103). 2025-07-27 15:29:56 -04:00
Wilson Snyder 470f99694e Revert d8dbb08a: Support bit queue streaming (#5830) (#6103) 2025-07-26 17:59:52 -04:00
Wilson Snyder f3560837ec Add error on missing forward declarations (#6207). 2025-07-26 17:11:35 -04:00
Paul Swirhun d8dbb08a95
Support bit queue streaming (#5830) (#6103) 2025-07-26 16:53:51 -04:00
George Polack f1826a7c20
Support Verilog real to SystemC double (#6136) (#6158) 2025-07-25 20:05:36 +02:00
Yilou Wang 10ac99ac05
Support randomization of scope variables with 'std::randomize()' (#5438) (#6185) 2025-07-25 12:13:46 +02:00
Wilson Snyder 2287d420ee Optimize to return memory when using -build (#6192) (#6226). 2025-07-24 08:36:58 +02:00
Geza Lore 7c5d462564
Remove AstJumpLabel (#6221) 
Remove AstJumpLabel

AstJumpGo now references one if its enclosing AstJumpBlocks, and
branches straight after the referenced block.

That is:

```
JumpBlock a {
   ...
   JumpGo(a);
   ...
}
// <--- the JumpGo(a) goes here
```

This is sufficient for all use cases and makes control flow much easier to
reason about. As a result, V3Const can optimize a bit more aggressively.

Second half of, and fixes #6216
 2025-07-23 17:51:16 +01:00
Geza Lore 763183f067
Internals: Remove AstWhile::precondsp() (#6219). No functional change intended. 2025-07-23 08:50:39 -04:00
Ryszard Rozak 28808f38bb
Dump function to which AstAddrOfCFunc points (#6188) 2025-07-18 08:37:00 +02:00
Wilson Snyder 87050670b4 Fix structure select causing 'Wide Op' error (#6191). 2025-07-17 18:17:49 -04:00
Wilson Snyder d89df33fcd Change control file `public_flat_*` and other signal attributes to support __ in names (#6140). 2025-07-09 20:48:00 -04:00
Ryszard Rozak 8b3a6ba542
Support disable dotted references (#6154) 2025-07-09 16:59:26 -04:00
Wilson Snyder 6c9cbaef62 Internals: Clean up some constructors. No functional change intended. 2025-07-03 18:59:32 -04:00
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