Firtool Release 1.44.0

What's Changed

• [Reducer] Speed up OperationPruner by @maerhart in #5311
• [Pipeline] Fix use-after-free in StageSeparatorToStagePass. by @dtzSiFive in #5313
• [FIRRTL] Add Verif/LTL intrinsics by @fabianschuiki in #5310
• [OM] Bypass constant ops referencing symbols in ExportVerilog by @nandor in #5314
• [MapArith] Introduce --map-arith-to-comb pass by @mortbopet in #5297
• [IMCP] Speed up the bulk connection propagation, NFCI by @uenoku in #5290
• [NFC] LLVM bump by @darthscsi in #5317
• [FIRRTL] Add util support for refsub/open aggs by @dtzSiFive in #5315
• Enum const support by @trilorez in #5321
• Preserve const for getWidthlessType by @trilorez in #5328
• [Pipeline] Add integration test by @mortbopet in #5281
• [Capnp] Move the minimum CMake version logic to only run if capnp is found by @teqdruid in #5335
• [ETC] Extract registers and instances if not in design by @uenoku in #5331
• [OM] Use standard API for getting the base pointer from a vector. by @mikeurbach in #5338
• [Calyx to FSM]Fix the bug when calyx multi-component design lower to fsm. by @linuxlonelyeagle in #5341
• [Python] Add CMake for MacOS C++17 compatibility in wheel build. by @mikeurbach in #5343
• Update FIRRTLAnnotations.md to remove reference to tb_seq_mems.json [NFC] by @mwachs5 in #5342
• [FIRRTL] Make StringType buildable by @youngar in #5344
• [FIRRTL] Add StringConstantOp by @youngar in #5345
• [Comb] Canonicalize a + c1 + c2 into a + (c1 + c2) by @nandor in #5348
• [Comb][FIRRTL][Seq] Fix fusing locations to append not add as metadata. by @dtzSiFive in #5349
• [FIRRTL] Donot rename InstanceOp by @prithayan in #5352
• [SV][ETC] Fix perf bug removing from a SetVector of slice results. by @dtzSiFive in #5353
• [DependenceAnalysis] Check memref dependencies on each loop nest by @matth2k in #5287
• [Arc] Preserve extern modules as internal inputs/outputs by @fabianschuiki in #5069
• [ETC] Don't erase operations used by dead module instances by @uenoku in #5357
• [Pipeline] Refactor pipeline dialect to be block-based by @mortbopet in #5332
• [FIRRTL] Add property assign op instead of using connect by @youngar in #5361
• [FIRParser] Add support for parsing String types by @youngar in #5362
• [FIRParser] Parse PropAssignOps by @youngar in #5365
• [FIRRTL] Explicitly reject rwprobe of types containing const. by @dtzSiFive in #5367
• [FIRRTL][IMDCE] Remove dead operation from live set. by @dtzSiFive in #5369
• [FIRParser] Parse string constants by @youngar in #5368
• [FIRRTL][ExpandWhens] Support properties by @youngar in #5373
• [FIRRTL] Improve PropAssignOp verifiers by @youngar in #5375
• [FIRRTL] Add RefCastOp for reset/width/const differences in refs. by @dtzSiFive in #5372
• [FIRRTL][InferWidths] Skip over property types by @youngar in #5381
• [Pipeline] Add optional stall signal to pipelines by @mortbopet in #5278
• [Pipeline] Add pipeline.latency operation by @mortbopet in #5340
• [Pipeline] Remove LI notion from pipelines by @mortbopet in #5359
• [FIRRTL] Add utility for getting the assignment to a property value. by @mikeurbach in #5374
• [ExportFIRRTL] Implement C API by @SpriteOvO in #5300
• [LowerToHW] Lower clock gate intrinsic to Seq dialect by @fabianschuiki in #5363
• [FIRRTL][LowerXMR] Resolve through refcast operations. by @dtzSiFive in #5376
• [FIRRTL][IMCP] Skip over non-base types by @youngar in #5382
• [FIRRTL][InferWidths] Handle foreign and prop types uniformly by @youngar in #5392
• [FIRRTL][CheckCombLoops] Support property types by @youngar in #5383
• [FIRRTL] Add BigInt property type by @youngar in #5384
• [FIRRTL][LowerTypes] Support RefCast. by @dtzSiFive in #5377
• [FIRRTL][InferWidths] Support RefCastOp. by @dtzSiFive in #5378
• [FIRRTL][InferResets] Support RefCastOp. by @dtzSiFive in #5387
• [FIRParser] Add support for BigInt types by @youngar in #5385
• [FIRRTL] Add v2.4.0 Radix-specified Integer Literals by @seldridge in #5380
• [FIRRTL] Support const "source" in forces, insert refcast as needed. by @dtzSiFive in #5388
• [FIRRTL][FIRParser] Support define of non-identical refs via ref.cast. by @dtzSiFive in #5389
• [Seq] Add clock gate conversion to extern module by @fabianschuiki in #5364
• [FIRRTL] Add BigIntConstantOp by @youngar in #5397
• [FIRParser] Support BigInt constants by @youngar in #5398
• [FIRRTL] Remove getBaseTypeOrNull by @youngar in #5393
• [OM] Simplify the Python instantiate API to just return Objects. by @mikeurbach in #5400
• [FIRRTL][InferWidths] Fix back-prop, fix ref equality, fix upper bound. by @dtzSiFive in #5403
• [FIRRTL] Use preferred cast style, NFC by @uenoku in #5401
• [FIRRTL] Initial pass to extract OM classes from FIRRTL modules. by @mikeurbach in #5394
• [FIRRTL] Introduce a helper ODS class for type declaration, NFC by @uenoku in #5399
• [HW] Fix type casts for nested type alias by @uenoku in #5339
• [FIRRTL] Replace deprecated casts in tablegen, NFC by @uenoku in #5406
• [FIRRTL][InferWidths] Restore back-prop constraint for strictconnect. by @dtzSiFive in #5409
• [FIRRTL] Delete CheckCombCycles, remove -use-old-check-comb-cycles. by @dtzSiFive in #5410
• [OM] Get the field names from an Object by @prithayan in #5402

New Contributors

• @linuxlonelyeagle made their first contribution in #5341

Full Changelog: firtool-1.43.0...firtool-1.44.0

Firtool Release 1.37.1

What's Changed

• Backport IMDCE improvements into firtool 1.37 by @uenoku in #5318
• [ModuleInliner][BugFix] Correctly update NLA after recursive inline (… by @uenoku in #5330

Full Changelog: firtool-1.37.0...firtool-1.37.1

Firtool Release 1.34.4

What's Changed

• [ModuleInliner][BugFix] Correctly update NLA after recursive inline (… by @youngar in #5320

Full Changelog: firtool-1.34.3...firtool-1.34.4

Firtool Release 1.43.0

What's Changed

• [DC] Add canonicalization patterns by @mortbopet in #5158
• [circt-lec] Clean up z3 includes by @rwy7 in #5186
• [FIRRTL] Export named references as macros to Verilog files by @trilorez in #5180
• [Arc] Change MemoryWritePortOp to also take an arc by @maerhart in #5166
• [Arc] Add ArcCanonicalizer pass by @maerhart in #5196
• [arcilator] Convenience flag for printing debug info by @maerhart in #5199
• [Arc] Simulation specific optimization for comb.icmp by @maerhart in #5198
• [Arc] Merge RemoveArcArgsPattern into ArcCanonicalizer by @maerhart in #5200
• [Arc] SinkInputs: update to CallOpMutableInterface and merge into ArcCanonicalizer by @maerhart in #5201
• [OM] Add initial implementation of Evaluator. by @mikeurbach in #5193
• [FIRRTL] Add a type interface for querying phase compatibility by @rwy7 in #5206
• [FIREmitter] Support Open aggregates, RefSubOp by @dtzSiFive in #5179
• [FIRRTL] Handle flips in const connections by @trilorez in #5210
• [DC] Add fork/sink materialization passes by @mortbopet in #5159
• [LowerSeqToSV] Fix a dominance bug when restoring subaccess by @uenoku in #5215
• [DC] Address canonicalizer review comments by @mortbopet in #5212
• Add StringType to FIRRTL dialect by @rwy7 in #5208
• [SV] Add lowering option to emit separate always blocks by @nandor in #5211
• [FIRRTL] Const handling in cast ops by @trilorez in #5151
• [WireDFT] Add support for wiring optional clock div bypass signal. by @dtzSiFive in #5219
• [NFC][ESI][C++ API] Cleaning up more references to 'cosim' by @teqdruid in #5227
• Bump LLVM by @girishpai in #5228
• [DC] Add merge operation by @mortbopet in #5213
• [HandshakeToDC] Add conversion by @mortbopet in #5214
• [Seq][HW] Add a macro to enable register initializers by @nandor in #5222
• [ExportVerilog] Fix formatting involving macro definition. by @dtzSiFive in #5232
• [FIRRTL][LowerXMR] Use ABI for refs when no internal path info. by @dtzSiFive in #5229
• [FIRRTL] Reject ref statements for some ports but not all. by @dtzSiFive in #5233
• [OM] Add a symbol reference attribute by @prithayan in #5230
• [CI] Add runs with Valgrind to CI by @nandor in #5085
• [HW][SV] Allow control of initial blocks setting memories by @nandor in #5237
• [OM] Add helper builders for OM ops by @prithayan in #5244
• [firtool] Separated firtool pipeline setup into a library by @nandor in #5241
• [HWCleanUp] Don't fuse always_comb by @uenoku in #5175
• [SystemC] integration tests: avoid compile_commands.json in clang-tidy. by @dtzSiFive in #5239
• [CI] Add macos wheels by @rsetaluri in #5249
• [LowerSeqToSV] Remove Vivado workaround by @uenoku in #5245
• [OM] Add initial CAPI for OM dialect Evaluator. by @mikeurbach in #5248
• [circt-lec] Move circt-lec files to CIRCT library by @TaoBi22 in #4544
• [FIRRTL] Make emit-metadata a mlir::ModuleOp pass by @prithayan in #5247
• [OM] Add initial Python API for OM dialect evaluator. by @mikeurbach in #5250
• [FIRParser] Support keywords and literal identifiers as static ref exprs. by @dtzSiFive in #5252
• Bump LLVM by @uenoku in #5251
• [CMake] Require cmake >= 3.23 but only on capnp builds by @teqdruid in #5243
• [IMDCE] Remove dead hierpath and annotations in IMDCE by @uenoku in #5226
• [PrefixModules] Rename references from the module body by @nandor in #5259
• Make Z3 a transitive dependency of CIRCTLogicalEquivalence by @rwy7 in #5261
• [FIRRTL] DropConst pass by @trilorez in #5152
• [cmake] Gate FILE_SET commands on CAPNP by @teqdruid in #5265
• [FIRParser] Add support for enumeration types and match statements by @youngar in #5116
• [Arc] Improve icmp canonicalization pattern by @maerhart in #5266
• Remove explicit phase annotations by @rwy7 in #5262
• [Python] Enable release tag by @rsetaluri in #5254
• Move from defunct codeowners to GitHub CODEOWNERS. by @dtzSiFive in #5269
• [CI] Migrate from set-output to using environment files. by @dtzSiFive in #5267
• [CI] Update github actions for checkout, cache: v2 -> v3 by @dtzSiFive in #5268
• [CI] Update upload-artifact action v2 -> v3, already using in other flows. by @dtzSiFive in #5271
• Force all XMRRefs to go through hierpath by @darthscsi in #5220
• Add LTL and Verif dialects by @fabianschuiki in #5255
• [ExportVerilog] Add LTL and Verif dialect support by @fabianschuiki in #5256
• Move cocotb driver to separate tool by @mortbopet in #5279
• [FIRRTL] Tweak naming by @darthscsi in #5288
• [OM] Use custom CAPI wrappers for Object. by @mikeurbach in #5275
• [OM] Add Python support for Objects in Fields. by @mikeurbach in #5276
• [FIRRTL][ExpandWhens] Fix performance with large blocks by @youngar in #5293
• [IMCP] Mark overdefined for the operations with large number of operands by @uenoku in #5291
• [OM] Add a string type by @uenoku in #5277
• [OM] Add a list type and attribute by @uenoku in #5280
• [FIRRTL] Donot create empty InnerSym name by @prithayan in #5301
• [FIRRTL][ModuleInliner] Donot create empty inner sym by @prithayan in #5302
• [Pipeline] Add pipeline.stage op and rename others accordingly by @mortbopet in #5246
• [PipelineToHW] Rework hardware lowering by @mortbopet in #5234
• [LowerSeqToSV] Make createTree iterative, NFCI by @uenoku in #5303
• [FIRRTL] Const parsing, emitting, and prim ops by @trilorez in #5153
• [Pipeline] Fix constant copying in StageSeparatorToStage by @mortbopet in #5308
• [Arc] Pull value definitions into reset/enable IfOps where possible by @TaoBi22 in #5188
• [OM] Add ClassOp builders by @prithayan in #5283
• [Verif] Add assert/assume/cover labels by @fabianschuiki in #5306
• [OM] Create OM Nodes for metadata by @prithayan in #5224
• [FIRRTL][InferWidths] Make solveExpr Iterative by @prithayan in #5305
• [comb] Minor correction to comb.icmp td docs by @TaoBi22 in #5304

New Contributors

• @girishpai made their first contribution in #5228

Full Changelog: firtool-1.42.0...firtool-1.43.0

Firtool Release 1.34.3

What's Changed

• (1.34.3 backport) [WireDFT] Add support for wiring optional clock div bypass signal. (#5219) by @dtzSiFive in #5225

Full Changelog: firtool-1.34.2...firtool-1.34.3

Firtool Release 1.42.0

Please note, the previous release of firtool, firtool-1.41.0 has a compilation error. Please use this release instead.

What's Changed

• [CI] Add python3.8 manylinux wheel by @rsetaluri in #5174
• [FIREmitter] Use PrettyPrinter for breaking/indenting. by @dtzSiFive in #5176
• [HWArithToHW] Restore access to HWArith-specific patterns. by @jopperm in #5185
• [firtool] Erase extra verbatim files before printing final MLIR. by @mikeurbach in #5181
• [FIRRTL] Fix connect verifier for enums by @youngar in #5183
• [Arc] MemoryReadPortOp: remove enable and clock operand, make it pure by @maerhart in #5194
• [Arc] Fix arc.output verifier by @maerhart in #5197
• [Arc] Include the addressing type in the memory type by @maerhart in #5195

Full Changelog: firtool-1.41.0...firtool-1.42.0

Firtool Release 1.41.0

What's Changed

• [LowerTypes] Preserve rwprobes, forceable. by @dtzSiFive in #5051
• [FIRRTL] Support AttributeAnnotation by @uenoku in #5076
• [ESI] Refactor ESI cosim API type emission by @mortbopet in #5096
• [ESI] Add clean metadata pass by @mortbopet in #5097
• [ESI] Add --server-only mode to esi-cosim-runner.py by @mortbopet in #5098
• [ESI] Add C++ cosimulation API by @mortbopet in #5099
• [ESI] Add C++ cosimulation capnproto backend by @mortbopet in #5100
• [FIRRTL][LowerTypes] Use agg create ops for unlowered users. by @dtzSiFive in #5101
• [FIRRTL] Register const updates by @trilorez in #5074
• Bump LLVM by @trilorez in #5095
• [Arc] LowerState: fix memory read materialization by @zyedidia in #5094
• [reduce] Handful of reducer fixes and improvements by @fabianschuiki in #4100
• [HWMemSimImpl] Remove "mem" from "ignore-read-enable-mem" flag by @fabianschuiki in #3538
• [ExportVerilog] Remove unused function by @youngar in #5106
• [HW] Add verifiers for EnumConstantOp and EnumCmpOp by @youngar in #5105
• [FIRRTL] Introduce element-wise operations by @uenoku in #4636
• [circt-lec] Introduce the circt-lec tool by @frog-in-the-well in #3991
• [docs] Fix broken docs links in PyCDE and diagrams on Getting Started page by @VMois in #5013
• [FIRRTL] Fix enumcreate printed form by @youngar in #5117
• [firtool] Run LowerMatches before InferWidths by @youngar in #5118
• [ExportVerilog] Transform anonymous enumerations in to typedefs by @youngar in #5107
• [HandshakeToHW] Add handshake.instance lowering by @mortbopet in #5113
• [ESI] ESI CPP Cosim API -> ESI CPP API by @mortbopet in #5115
• [ExportVerilog] Add option to disallow packed struct assignments by @mortbopet in #5114
• [HW] Remove getGroundFields from FieldIDTypeInterface by @youngar in #5126
• [FIRRTL] Support FEnumTypes in FIRRTLBaseType dispatch functions by @youngar in #5123
• [FIRRTL] Hoist common type-property methods up to FIRRTLType. by @dtzSiFive in #5125
• [FIRRTL][LowerMatches] Fix matches with 0 and 1 variants by @youngar in #5124
• Update RationaleFIRRTL.md by @mmaloney-sf in #4911
• [HW] Support enum types in hw::getBitWidth() by @youngar in #5129
• [Arc] Add clock_domain canonicalizer by @maerhart in #5018
• [Docs] Update dialect diagram by @maerhart in #4122
• [Arc] Fix ClockDomainOp canonicalizer by @maerhart in #5133
• [circt-reduce] Infrastructure improvements, bug fixes, and additional tests by @maerhart in #5131
• [circt-reduce] Fix tests for portability again, prefer /usr/bin/env. by @dtzSiFive in #5135
• [FIRRTL][InferResets] Fix inference through ref.sub. by @dtzSiFive in #5136
• [Docs] Add Arc to dialects diagram by @maerhart in #5134
• Make FModuleLike inherit from HWModuleLike by @rwy7 in #4659
• bump llvm by @debs-sifive in #5120
• [HandshakeToFIRRTL] <- deprecate by @mortbopet in #5130
• [firtool][circt-as] Handle new error result for writeBytecodeToFile. by @dtzSiFive in #5140
• [Arc] Add LatencyRetiming pass by @maerhart in #5141
• [FIRRTL] Add Open variants of vector/bundle, subindex/subfield. by @dtzSiFive in #5127
• [FIRRTL] Add verifiers for rwprobe + const on RefType, Forceable. by @dtzSiFive in #4982
• [Arc] Add StorageGetOp canonicalizer by @maerhart in #5147
• [Arc] Add IsolateClocks pass by @maerhart in #5146
• [Arc] Generalize InlineArcs pass by @maerhart in #5144
• [FIRRTL] Add LowerOpenAggs pass. by @dtzSiFive in #5137
• [FIRRTL] More defensive creation of Forceable declarations. by @dtzSiFive in #5148
• [FIRRTL] Fix incorrect getSingleConnectUserOf when > 1 connect. by @dtzSiFive in #5150
• [Arc] Add reset and enable grouping pass by @TaoBi22 in #5103
• [CI] Bump CI image by @mortbopet in #5155
• [CHIRRTL] Use InnerSymbolOpInterface on cmem and smem. by @dtzSiFive in #4874
• [FIRRTL][FIRParser] Parse mixed aggregates into open agg/sub ops. by @dtzSiFive in #5128
• [ExportVerilog] Allow $ to be in the identifier by @uenoku in #5160
• [DC] Add rationale and boilerplate by @mortbopet in #5156
• [SV] Macro definitions and declarations with arguments by @darthscsi in #5149
• Bump LLVM by @maerhart in #5165
• [Arc] Dedup: generalize to CallOpInterface by @maerhart in #5161
• [FIRRTL] Canonicalize refresolve(forceable.ref) -> forceable.data. by @dtzSiFive in #5170
• [DC] Add ops and types by @mortbopet in #5157
• Bump LLVM by @fabianschuiki in #5172

New Contributors

• @frog-in-the-well made their first contribution in #3991
• @mmaloney-sf made their first contribution in #4911

Full Changelog: firtool-1.40.0...firtool-1.41.0

Firtool Release 1.40.0

What's Changed

• [ESI][Data windows] Introduce wrap/unwrap by @teqdruid in #4953
• [HW] Size enums to the number of tags by @darthscsi in #4988
• [FIRRTL] Add MemOp prefix attr, remove groupID attr by @fabianschuiki in #4952
• [Arc] Memory ops: optional enables and folders by @maerhart in #4976
• [Arc] Add StateOp folder by @maerhart in #4979
• [FIRRTL] lower plusargs to initial block by @darthscsi in #4999
• [FIRRTL] Parse {force,release}{,_initial}. by @dtzSiFive in #4990
• [Seq] Add enums for RUW/WUW behavior of memories by @fabianschuiki in #5007
• [FIRRTL] Add getFieldNameAttr helper to SubTagOp by @youngar in #5016
• [HW] Add type inference to UnionExtractOp by @youngar in #5015
• [FIRRTL] Lower complex enums to use hw enums for the tag by @youngar in #5019
• [ExportVerilog] Handle printing of union types by @youngar in #5020
• [ExportVerilog] Union type output support by @teqdruid in #5001
• [InferWidths] Add support for inferring through ref.sub. by @dtzSiFive in #5000
• [FIRRTL][InferResets] Infer through ref.sub. by @dtzSiFive in #4998
• [PyCDE] [Docs] Mention to add upstream remote to fetch tags when building wheels by @VMois in #5027
• [Handshake] Remove cmerge return type inference by @RamirezLucas in #5021
• [Arc] StripSV: fix dialect dependencies, option and warning for replacing external module instances by @maerhart in #5028
• [ExportVerilog] Handle printing of UnionExtractOp by @youngar in #5022
• [HW] implement missing EnumConstantOp builder by @youngar in #5030
• [HW] Add an enum comparison operation by @youngar in #5032
• Bump LLVM by @youngar in #5029
• [FIRRTL][Dedup] Print integer constants as hexadecimal by @youngar in #5033
• [Docs] Include Arc and SystemC in Passes.md by @maerhart in #5036
• [ExportVerilog] Add support for EnumCmpOp by @youngar in #5035
• [FIRRTL] Add MatchOp statement by @youngar in #5037
• [FIRRTL] Add IsTagOp to test enumeration variant by @youngar in #5038
• [FIRRTL] Add LowerMatches pass by @youngar in #5039
• [Seq] Add an option to lower seq.compreg to always blocks by @nandor in #5040
• [FIRRTL][LowerToHW] Handle SubTag and IsTag operations by @youngar in #5041
• [FIRRTL] Support EnumTypes in walkGroundTypes(Type) utility by @youngar in #5042
• [Arc] Infer StateOp reset from CompReg by @TaoBi22 in #4997
• [Arc] Remove erroneous reset nesting in LowerState pass by @TaoBi22 in #5023
• [FIRRTLFolds] Fix crashes in bundle/vector create folders. by @dtzSiFive in #5048
• [FIRRTL] Alternative Connect/Invalidate Parsing by @seldridge in #5049
• [LowerTypes][NFC] Minor touchups. by @dtzSiFive in #5050
• Enable --view-op-graph for circt-opt by @mortbopet in #5046
• [ESI][Windows] Lower Window ports to unions by @teqdruid in #5026
• [Handshake] Remove handshake.select by @mortbopet in #5045
• Bump LLVM by @chick in #5054
• [LoopSchedule] Move PipelineWhile and related ops from Pipeline to LoopSchedule by @andrewb1999 in #4947
• [NFC][Support] Factor out TypeConversionPattern into support lib by @teqdruid in #5055
• [NFC][ESI] Refactor ESI passes into individual files by @teqdruid in #5058
• [ESI][MSFT] Fix all clang-tidy-10 warnings by @teqdruid in #5059
• [FIRRTL] Parse 3.0.0 connect and invalidate by @seldridge in #5057
• [PyCDE] Expose ESI list type by @teqdruid in #5060
• [ESI] Fix capnp relative include paths after refactor. by @dtzSiFive in #5061
• [FIRRTL] Uninferred Width Cast by @darthscsi in #5047
• [ETC] Don't relocate instances that were only in extracted test code. by @mikeurbach in #5064
• [Arc][LowerState] Fix combinational loop false positives by @fabianschuiki in #5068
• [FIRRTL] Add clock gate intrinsic by @fabianschuiki in #5073
• LLVM Bump by @nandor in #5070
• [FIRRTL] FoldReadWritePorts: Fix heap-use-after-free. by @dtzSiFive in #5078
• [FIRRTL][InferWidths] Support enum types by @youngar in #5079
• [ExportVerilog] Add support for UnionCreate op. by @youngar in #5081
• [FIRRTL] firtool: Run merge-cnxns regardless of agg preserv. by @dtzSiFive in #5086
• [OM] Add a Reference type. by @mikeurbach in #5083
• [OM] Add Reference attribute. by @mikeurbach in #5084
• [FIRRTL] RefType: Implement FieldIDTypeInterface. by @dtzSiFive in #5087
• [Seq] Add clock gate operation by @fabianschuiki in #5082
• [FIRRTL][LowerToHW] Support FEnumCreateOp by @youngar in #5080
• [ExportVerilog] Remove uneeded parenthesis around UnionCreate by @youngar in #5091
• [FIRRTL][ExpandWhens] Use port locs when emitting init errors by @youngar in #5092
• [FIRRTL] Remove some unused datastructures by @youngar in #5093
• [FIRRTL] Support multiple ports for smem by @SpriteOvO in #4850
• [LowerToHW] Gate force/release on ifndef SYNTHESIS, not VERILATOR. by @dtzSiFive in #5090

New Contributors

• @VMois made their first contribution in #5027
• @chick made their first contribution in #5054

Full Changelog: firtool-1.39.0...firtool-1.40.0

Firtool Release 1.34.2

What's Changed

• [ETC] Don't relocate instances that were only in extracted test code (#5064) by @mikeurbach in #5065

Full Changelog: firtool-1.34.1...firtool-1.34.2

Firtool Release 1.34.1

What's Changed

• Backport to Firtool 1.34.1 by @uenoku in #5044

Full Changelog: firtool-1.34.0...firtool-1.34.1