Verilator 4.204 2021-06-12 released

[wsnyder]

Verilator 4.204 2021-06-12

Minor:

• Add 'make ccache-report' (Add ccache-report target to standard Makefile verilator#3011). [Geza Lore]
• Add --reloop-limit argument (Expose Reloop limit as CLI argument verilator#2943) (Add --reloop-limit argument verilator#2960). [Geza Lore]
• Add --expand-limit argument (Add limit to V3Expand to prevent large replication operation runaway verilator#3005). [Julien Margetts]
• Add TRACE_THREADS to CMake (Add TRACE_THREADS to CMake verilator#2934). [Jonathan Drolet]
• Optimize large lookup tables to static data (Improve large lookup tables verilator#2925). [Geza Lore]
• Optimize reloop to accept constant index offsets (Improve Reloop to accept constant index offsets. verilator#2939). [Geza Lore]
• Split always blocks to better respect --output-split-cfuncs. [Geza Lore]
• Support ignoring "`pragma protect ..." (Added support for "`pragma protect ..." model encryption verilator#2886). [Udi Finkelstein]
• Support --trace-fst for SystemC with CMake (Allow --trace-fst for SystemC with CMake verilator#2927). [Jonathan Drolet]
• Update cmake latest C++ Standard Compilation flag (Enabling latest C++ Standard Compilation flag verilator#2951). [Ameya Vikram Singh]
• Prep work towards better ccache hashing/performance. [Geza Lore]
• Fix assertion failure in bitOpTree optimization (Coverage gives "Only true is set" from v4.200 bitOpTree optimization verilator#2891) (Fix assertion failure in bitOpTree opt verilator#2899). [Raynard Qiao]
• Fix DPI functions not seen as vpiModule (Scope module fix verilator#2893). [Todd Strader]
• Fix bounds check in VL_SEL_IWII (Fix bounds check in VL_SEL_IWII verilator#2910). [Krzysztof Bieganski]
• Fix slowdown in elaboration (Commit c1e8337: causing explosion in V3Width Runtime verilator#2911). [Nathan Graybeal]
• Fix initialization of assoc in assoc array (2-dimension associative array  verilator#2914). [myftptoyman]
• Fix make support for gmake 3.x (Verilator 4.202 uses Makefile syntax which doesn't work on RHEL/CentOS 7 verilator#2920) (Add back support for gmake 3.x verilator#2921). [Philipp Wagner]
• Fix VPI memory access for packed arrays (VPI memory access for packed arrays verilator#2922). [Todd Strader]
• Fix MCD close also closing stdout (Multi-channel file descriptors - cause core dump (4.200) verilator#2931). [Alexander Grobman]
• Fix split procedures to better respect --output-split-cfuncs (Split procedures to better respect --output-split-cfuncs. verilator#2942). [Geza Lore]
• Fix to emit 'else if' without nesting (Emit 'else if' without nesting. No functional change intended. verilator#2944). [Geza Lore]
• Fix part select issues in LATCH warning (Remove empty math node visitor as it is required to evaluate part sel… verilator#2948) (Got incorrect warning message in latest releases version 4.202 verilator#2938). [Julien Margetts]
• Fix to not emit empty files with low split limits (Don't emit empty files with low split limits verilator#2961). [Geza Lore]
• Fix merging of assignments in C++ code (Regression in lint check ("Wide Op w/ no temp" internal error) verilator#2970). [Ruper Swarbrick]
• Fix unused variable warnings (Fix unused variable warnings verilator#2991). [Pieter Kapsenberg]
• Fix --protect-ids when using SV classes (Fix --protect-ids when using SV classes verilator#2994). [Geza Lore]
• Fix constant function calls with uninit value (Function with unset output value gives error verilator#2995). [yanx21]
• Fix Makefiles to support Windows EXEEXT usage (Proper EXEEXT usage verilator#3008). [Miodrag Milanovic]