2018-11-01 12:25:03 +00:00
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# opt
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> A tool that takes LLVM source files and runs specified optimizations and/or analyses on them.
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2019-06-04 10:00:16 +01:00
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> More information: <https://llvm.org/docs/CommandGuide/opt.html>.
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2018-11-01 12:25:03 +00:00
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- Run an optimization or analysis on a bitcode file:
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`opt -{{passname}} {{path/to/file.bc}} -S -o {{file_opt.bc}}`
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- Output the Control Flow Graph of a function to a "dot" file:
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`opt {{-dot-cfg}} -S {{path/to/file.bc}} -disable-output`
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- Optimize the program at level 2 and output the result to another file:
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`opt -O2 {{path/to/file.bc}} -S -o {{path/to/output_file.bc}}`
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