Update cheatsheets

iverilog

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# iverilog
+
+> Preprocesses and compiles Verilog HDL (IEEE-1364) code into executable programs for simulation.
+> More information: <https://github.com/steveicarus/iverilog>.
+
+- Compile a source file into an executable:
+
+`iverilog {{path/to/source.v}} -o {{path/to/executable}}`
+
+- Compile a source file into an executable while displaying all warnings:
+
+`iverilog {{path/to/source.v}} -Wall -o {{path/to/executable}}`
+
+- Compile and run explicitly using the VVP runtime:
+
+`iverilog -o {{path/to/executable}} -tvvp {{path/to/source.v}}`
+
+- Compile using Verilog library files from a different path:
+
+`iverilog {{path/to/source.v}} -o {{path/to/executable}} -I{{path/to/library_directory}}`
+
+- Preprocess Verilog code without compiling:
+
+`iverilog -E {{path/to/source.v}}`