LLVM: `llvm-as` tool

NAME

llvm-as

SYNOPSIS

llvm-as [options] [filename]

DESCRIPTION

The llvm-as command is the LLVM assembler. It reads a file containing human readable LLVM assembly language, translates it to LLVM bytecode, and writes the result into a file or to standard output.

If filename is omitted or is -, then llvm-as reads its input from standard input.

If an output file is not specified with the -o option, then llvm-as sends its output to a file or standard output by the following logic:

If the input is standard input, then the output is standard output.
If the input is a file that ends with .ll, then the output file is of the same name, except that the suffix is changed to .bc.
If the input is a file that does not end with the .ll suffix, then the output file has the same name as the input file, except that the .bc suffix is appended.

OPTIONS

-f
Force overwrite. Normally, llvm-as will refuse to overwrite an output file that already exists. With this option, llvm-as will overwrite the output file and replace it with new bytecode.
-help
Print a summary of command line options.
-o <filename>
Specify the output filename. If filename is -, then llvm-as sends its output to standard output.
-stats
Print statistics.
-time-passes
Record the amount of time needed for each pass and print it to standard error.

EXIT STATUS

If llvm-as succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit with a non-zero value.