llvm-as
assembler that reads LLVM assembly language and outputs LLVM bitcode
TLDR
Assemble LLVM IR to bitcode
$ llvm-as [input.ll] -o [output.bc]
Assemble from stdin$ cat [input.ll] | llvm-as -o [output.bc]
Check syntax only$ llvm-as -disable-output [input.ll]
Output to stdout$ llvm-as [input.ll] -o -
SYNOPSIS
llvm-as [options] [filename]
DESCRIPTION
llvm-as is the LLVM assembler that reads LLVM assembly language (.ll files) and outputs LLVM bitcode (.bc files). It's the inverse of llvm-dis.
The tool converts human-readable LLVM intermediate representation into the binary bitcode format used by other LLVM tools.
PARAMETERS
-o filename
Output filename.-f
Enable binary on terminal.-disable-output
Don't write output (syntax check).-data-layout layout
Override data layout.--help
Show help.--version
Show version.
EXAMPLE
$ ; input.ll
define i32 @main() {
ret i32 0
}
define i32 @main() {
ret i32 0
}
$ llvm-as input.ll -o output.bc
CAVEATS
Input must be valid LLVM IR. Bitcode format may change between LLVM versions. Use llvm-dis for reverse operation.
HISTORY
llvm-as has been part of LLVM since the project's inception by Chris Lattner at the University of Illinois in 2000.