Verilator 4.224 2022-06-19 released

[wsnyder]

Verilator 4.224 2022-06-19

Major:

• VCD tracing is now parallelized with --threads (Perform VCD tracing in parallel when using --threads verilator#3449). [Geza Lore, Shunyao CAD]

Minor:

• Add -f options to replace -O options (Move to GCC style -f options for optimizations verilator#3436).
• Changed --no-merge-const-pool to -fno-merge-const-pool (Move to GCC style -f options for optimizations verilator#3436).
• Changed --no-decoration to remove output whitespace (Add option allowing to disable formatting of cxx code verilator#3460). [Kamil Rakoczy]
• Support compile time trace signal selection with tracing_on/off (Static selection of traced scopes verilator#3323). [Shunyao CAD]
• Support non-ANSI interface port declarations (Non-ANSI interface port declarations causes crash verilator#3439). [Geza Lore, Shunyao CAD]
• Support concat assignment to packed array (Support concat assignment to packed array verilator#3446).
• Improve conditional merging optimization (Improve V3MergeCond by reordering statements verilator#3125). [Geza Lore, Shunyao CAD]
• Define VM_TRACE_VCD when tracing in VCD format. [Geza Lore, Shunyao CAD]
• Add assert when VerilatedContext is mis-deleted (Verilated objects can't be created at file scope verilator#3121). [Rupert Swarbrick]
• Internal prep work towards timing control. [Krzysztof Bieganski]
• Fix hang with large case statement optimization (Hang in Concat Optimization verilator#3405). [Mike Urbach]
• Fix UNOPTFLAT warning from initial static var (Fix UNOPTFLAT warning from initial static var verilator#3406). [Kamil Rakoczy]
• Fix compile error when enable VL_LEAK_CHECKS (Fix compile error when enable VL_LEAK_CHECKS verilator#3411). [HungMingWu]
• Fix cmake rules to support higher-level targets (CMake: Linker flags are lost when the verilated project is not the top-level executable verilator#3377) (Update verilator-config.cmake.in verilator#3386). [Martin Stadler]
• Fix BLKANDNBLK on $readmem/$writemem ($readmemh: Unsupported: Blocked and non-blocking assignments to same variable verilator#3379). [Alex Solomatnikov]
• Fix 'with' operator with type casting (with operator and type casting verilator#3387). [xiak95]
• Fix incorrect conditional merging (complex assign in always_comb verilator#3409). [Raynard Qiao]
• Fix passing VL_TRACE_FST_WRITER_THREAD in CMake build. [Geza Lore, Shunyao CAD]
• Fix compile error under strict C++11 mode (Fix compile error under strict C++11 verilator#3463). [Kevin Kiningham]
• Fix public unpacked input ports (Public unpacked input port verilator#3465). [Todd Strader]