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LLI Command Options

The syntax to execute programs in LLVM bitcode format with GraalVM is:

lli [LLI options] [GraalVM options] [polyglot options] <bitcode file> [program args]

Here, <bitcode file> is a compiled program with embedded LLVM bitcode.

The following options to lli are available:

  • --llvm.managed: enable a managed execution mode for LLVM IR code, which means memory allocations from LLVM bitcode are done on the managed heap. Learn more from Limitations and Differences to Native Execution. Note: Managed execution mode for LLVM bitcode is possible with GraalVM Enterprise only.

  • --print-toolchain-path: print the path of the LLVM toolchain bundled with GraalVM. This directory contains compilers and tools that can be used to compile C/C++ programs to LLVM bitcode for execution on GraalVM.

  • --print-toolchain-api-tool <tool>: print the path of a tool from the LLVM toolchain. Valid values for <tool> are CC, CXX, LD, AR, NM, OBJCOPY, OBJDUMP, RANLIB, READELF, READOBJ, or STRIP.

  • --print-toolchain-api-paths <path>: print a search path for the LLVM toolchain. Valid values for <path> are PATH and LD_LIBRARY_PATH.

  • --print-toolchain-api-identifier: print a unique identifier of the LLVM toolchain. Different modes of the LLVM runtime (e.g., --llvm.managed) might require compilation of bitcode with a different LLVM toolchain. This identifier can be used as a stable directory name to store build outputs for different modes.

  • -L <path>/--llvm.libraryPath=<path>: a list of paths where GraalVM will search for library dependencies. Paths are delimited by :.

  • --lib <libs>/--llvm.libraries=<libs>: a list of libraries to load in addition to the dependencies of the main binary. Files with a relative path are looked up relative to llvm.libraryPath. Entries are delimited by :.

  • --version: print the version and exit.

  • --version:graalvm: print the GraalVM version information and exit.

Expert and Diagnostic Options

Use --help and --help:<topic> to get a full list of options.