---
name: "llvm-upgrade"
section: "1"
platform: "linux"
package: "llvm"
version: "2.2-12"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/llvm-upgrade"
---

# llvm-upgrade(1)

LLVM assembly upgrade tool

## NAME

llvm-upgrade - LLVM assembly upgrade tool

## SYNOPSIS

**llvm-upgrade** \[*options*\] \[*filename*\]

## DESCRIPTION

**llvm-upgrade** is the LLVM assembly upgrade tool.  It reads a file containing  human-readable LLVM assembly language, and upgrades that assembly to the current version of LLVM. If the input is in the form currently accepted by LLVM, then no upgrades are performed.

The expected usage of this tool is as a filter, like this:

**llvm-1.9/bin/llvm-dis \< 1.9.bc \| llvm-upgrade \| llvm-2.0/bin/llvm-as -o 2.0.bc**

If *filename* is omitted or is `"-"`, then **llvm-upgrade** reads its input from standard input.

If an output file is not specified with the **-o** option, then **llvm-upgrade** sends its output to standard output.

## OPTIONS

- **-f**

  Force overwrite.  Normally, **llvm-upgrade** will refuse to overwrite an output file that already exists.  With this option, **llvm-upgrade** will overwrite the output file.

- **--help**

  Print a summary of command line options.

- **-o** *filename*

  Specify the output file name.  If *filename* is `"-"`, then **llvm-upgrade** sends its output to standard output.

## EXIT STATUS

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

## SEE ALSO

llvm-as, llvm-dis

## AUTHORS

Maintained by the LLVM Team (\<http://llvm.org\>).