3ba9077726
Fix soft cross-object constraint priority inversion ( #7228 ) ( #7233 )
...
Emit nested constraint setup tasks in depth-first order (deepest first)
so outer-scope soft constraints get higher priority per IEEE 18.5.13.
2026-03-10 19:02:15 -04:00
2046879beb
V3Randomize: Fix dist operator inside ConstraintIf blocks ( #7221 ) ( #7224 )
...
The lowerDistConstraints() function was not recursing into ConstraintIf
nodes, causing dist operators inside if-else blocks to remain unlowered
and trigger an internal error when ConstraintExprVisitor encountered them.
Fix by adding recursive handling of ConstraintIf nodes in lowerDistConstraints:
- Check for AstConstraintIf nodes before AstConstraintExpr
- Recursively process thensp() and elsesp() branches
- This ensures all dist operators are lowered regardless of nesting
Test case: t_randomize_dist_conditional.v demonstrates conditional dist:
constraint c {
if (randd) {
x dist { 8'd0 := 1, 8'd255 := 3 }; // 25% / 75%
} else {
x dist { 8'd0 := 3, 8'd255 := 1 }; // 75% / 25%
}
}
Fixes #7221
2026-03-10 07:06:00 +00:00
efa53189ea
Support constraint `with` item.index array reduction ( #7198 )
2026-03-06 05:14:55 -05:00
9a5c1d27c8
Support array reduction methods with 'with' clause in constraints ( #6455 ) ( #6999 )
2026-03-04 12:01:35 -05:00
3bc73cc768
Support constraint imperfect distributions ( #6811 ) ( #7168 )
2026-03-03 11:23:14 -05:00
ed84f3adb2
Support constraints on fixed-size array of class object members ( #7170 ) ( #7183 )
2026-03-03 06:27:31 -05:00
8a413b3ec7
Fix std::randomize() in static function with static class members ( #7167 ) ( #7169 )
2026-03-02 05:59:00 -05:00
108d209bd7
Support soft constraint solving with last-wins priority ( #7124 ) ( #7166 )
2026-03-01 15:16:55 -05:00
df6b808c49
Fix parameters inside std::randomize `with` clause ( #7140 )
2026-02-28 09:53:05 -05:00
da51021b0a
Internals: Simplify AstForeach header handling ( #7126 )
...
Rename AstSelLoopVars to AstForeachHeader, and make it a non-NodeExpr.
Tweak parser to always create an AstForeachHeader, so no need to fix it
up later.
2026-02-22 18:57:12 +00:00
1717df0261
Support solve..before constraints ( #5647 ) ( #7123 )
2026-02-22 11:33:18 -05:00
579acced99
Internals: Make AstArg into an AstNode, not Expr ( #7122 )
2026-02-22 14:40:51 +00:00
443678d8c4
Support array reduction methods without 'with' clause in constraints for dynamic arrays ( #7104 ) ( #7108 )
2026-02-22 09:23:02 -05:00
78ee787bb1
Internals: Clean up AstArg usage in AstNodeFTaskRef ( #7121 )
...
- Strengthen type of AstNodeFTaskRef::pinsp to be List[AstArg]
- Rename 'pinsp' to 'argsp'
- Add default constructor arguments
2026-02-22 10:38:37 +00:00
e023113b79
Internals: Carry 'with' clause as op4 on AstNodeFTaskRef ( #7114 )
...
op4 is now available to carry the 'with' clause explicitly instead of
being part of the argument lit. Will strengthen 'pinsp' to be
List[AstArg] next.
2026-02-22 09:15:28 +00:00
f25a85ea57
Fix associative array size() constraint generating invalid resize() call ( #7103 ) ( #7112 )
2026-02-20 10:54:02 -05:00
0e26b049ea
Support function calls with random arguments in constraints ( #7061 ) ( #7083 )
2026-02-19 15:37:55 +05:30
5d0352ab46
Fix conditional expressions in constraints ( #7087 )
2026-02-17 11:40:15 -05:00
ed3aa43657
Fix enum variables in constraint solver producing invalid enum values ( #7058 ) ( #7065 )
2026-02-16 22:44:38 -05:00
4357aee09a
Fix randomize() on null object handle crashing instead of returning 0 ( #7059 ) ( #7066 )
2026-02-16 22:43:57 -05:00
994ef82e76
Support unique constraint on explicit array element subsets ( #7057 ) ( #7064 )
2026-02-16 19:46:46 -05:00
14a94b6de9
Internals: Add addNextNull. No functional change intended.
2026-02-16 08:09:29 -05:00
821eacebea
Support power expressions with constant exponent in constraints ( #7073 )
2026-02-16 06:01:24 -05:00
9b1b9a5b3b
Fix randc cyclic behavior broken with constraints ( #7029 ) ( #7035 )
2026-02-12 10:58:04 -05:00
e41436bd4a
Support inherited and nested pre/post_randomize callbacks ( #7049 ) ( #7053 )
2026-02-11 09:33:57 -08:00
554fcef627
Fix rand_mode()/constraint_mode() when used as function arguments ( #7051 ) ( #7055 )
2026-02-11 09:33:09 -08:00
996a4b6e1a
Fix constraint_mode()/rand_mode() in constructor being overwritten by init code ( #7054 )
2026-02-11 09:32:08 -08:00
84350859e0
Support System Functions in Constraint Blocks ( #7028 ) ( #7036 )
2026-02-11 05:19:25 -08:00
5d12ae3a2f
Fix non-member identifiers used inside constraints ( #7033 )
2026-02-11 05:18:24 -08:00
67bff893bf
Fix whitespace
2026-02-10 20:17:22 -05:00
2bb807a931
Fix Inline foreach constraints on dynamic arrays of class objects ( #7030 ) ( #7037 )
2026-02-10 15:22:31 -08:00
925543676e
Fix rand_mode() on nested object variables causes Z3 solver error ( #7031 ) ( #7034 )
2026-02-10 13:59:09 -05:00
8791e6c5f2
Support constraint_mode() on static constraints ( #7027 ) ( #7038 )
2026-02-10 13:58:35 -05:00
a660fa54a7
Fix unique constraint in derived class ( #7022 )
2026-02-09 09:56:38 -05:00
f0afcede10
Internals: Use pure expressions in V3Randomize ( #6974 )
2026-02-01 05:09:19 +00:00
30e6cd9092
Fix accessing non-rand struct member in constraints ( #6960 )
2026-01-28 07:33:16 -05:00
7c6c6a684b
Add SPDX copyright identifiers, and get 'reuse' clean. No functional change.
2026-01-26 20:24:34 -05:00
c4dcdeab9a
Add parsing of solve-before inside foreach ( #6934 )
2026-01-20 07:14:11 -05:00
50b6954cfc
Internals: cppcheck cleanups
2026-01-17 23:18:09 -05:00
6fc9089a77
Support `unique` constraints (on 1D static arrays) ( #6810 ) ( #6878 )
2026-01-16 08:42:09 -05:00
31f8be0b85
Support detailed failure info for constraint violations ( #6617 ) ( #6883 )
...
* logging for the unsatisfied constraints
* Apply 'make format'
* fix teh quote error in the array indexing
* Apply 'make format'
* Len change for the hash for randomity when named assertion is used
* seperate name assertion and satisfied case
* Apply 'make format'
* simply comments and display info
* refine code and fix protect case
* format
* update display in test and .out file
* add an enable flag and warning type, add a protect_id version test and update out files
* Apply 'make format'
* simplify some comments
* update out file, ready to be merged.
* update .py file to set the hash key solid
* rename and reformate the warning message to follow the verilator style
* add a nowarn test
* Apply 'make format'
* ordering
---------
Co-authored-by: Udaya Raj Subedi <075bei047.udaya@pcampus.edu.np>
Co-authored-by: github action <action@example.com>
2026-01-12 15:53:49 +01:00
97d5844f2e
Support dynamic array elements in std::randomize ( #6896 )
2026-01-08 09:02:28 -05:00
6abfaf23a5
fix access flags in MemberSel randomization assignments ( #6892 )
2026-01-08 09:02:13 +01:00
72a6da5ac8
Support complex expressions as std::randomize arguments ( #6860 )
2026-01-05 14:37:36 -05:00
13327fa9c0
Copyright year update.
2026-01-01 07:22:09 -05:00
f6b966ed16
Fix `randc` on extended class ( #6852 ).
2025-12-21 19:56:55 -05:00
ffa87540cc
Fix randcase under fork ( #6843 ).
2025-12-20 21:25:01 -05:00
5244766b7b
Support reduction or in constraints ( #6840 )
2025-12-19 12:37:20 -05:00
41937ecbe4
Fix member select of variable without randmode ( #6800 ) ( #6833 )
2025-12-18 06:49:04 -05:00
f097e8a34e
Fix write variable placement for global constraints ( #6740 ) ( #6750 ) ( #6797 )
2025-12-11 14:16:34 -05:00
Yilou Wang
Rahul Behl
Rahul Behl
Kamil Danecki
Geza Lore
Ryszard Rozak
Wilson Snyder
Kamil Danecki
Pawel Kojma
Igor Zaworski
Geza Lore
Srinivasan Venkataramanan
Jakub Wasilewski