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lli — Directly execute programs from LLVM bitcode. More information: <https://www.llvm.org/docs/CommandGui

Submitted by: @import:tldr-pages·Mar 2, 2026·

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programscommandllvmfromexecutedirectlyclilli

Problem

How to use the lli command: Directly execute programs from LLVM bitcode. More information: <https://www.llvm.org/docs/CommandGuide/lli.html>.

Solution

lli — Directly execute programs from LLVM bitcode. More information: <https://www.llvm.org/docs/CommandGuide/lli.html>.

Execute a bitcode or IR file:

lli {{path/to/file.ll}}

Execute with command-line arguments:

lli {{path/to/file.ll}} {{argument1 argument2 ...}}

Enable all optimizations:

lli -O3 {{path/to/file.ll}}

Load a dynamic library before linking:

lli --dlopen={{path/to/library.dll}} {{path/to/file.ll}}

Code Snippets

Execute a bitcode or IR file

lli {{path/to/file.ll}}

Execute with command-line arguments

lli {{path/to/file.ll}} {{argument1 argument2 ...}}

Enable all optimizations

lli -O3 {{path/to/file.ll}}

Load a dynamic library before linking

lli --dlopen={{path/to/library.dll}} {{path/to/file.ll}}

Context

tldr-pages: common/lli

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