llvm-profdata - Profile data tool — LLVM 3.5 documentation

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# llvm-profdata - Profile data tool

## SYNOPSIS

llvm-profdata command [args...]

## DESCRIPTION

The llvm-profdata tool is a small utility for working with profile data files.

## COMMANDS

- merge
- show

## MERGE

### SYNOPSIS

llvm-profdata merge [options] [filenames...]

### DESCRIPTION

llvm-profdata merge takes several profile data files generated by PGO instrumentation and merges them together into a single indexed profile data file.

### OPTIONS

`-help```

  Print a summary of command line options.

`-output``=output``,` `-o``=output`

  Specify the output file name. Output cannot be `-` as the resulting indexed profile data can’t be written to standard output.

## SHOW

### SYNOPSIS

llvm-profdata show [options] [filename]

### DESCRIPTION

llvm-profdata show takes a profile data file and displays the information about the profile counters for this file and for any of the specified function(s).

If filename is omitted or is `-`, then llvm-profdata show reads its input from standard input.

### OPTIONS

`-all-functions```

  Print details for every function.

`-counts```

  Print the counter values for the displayed functions.

`-function``=string`

  Print details for a function if the function’s name contains the given string.

`-help```

  Print a summary of command line options.

`-output``=output``,` `-o``=output`

  Specify the output file name. If output is `-` or it isn’t specified, then the output is sent to standard output.

## EXIT STATUS

llvm-profdata returns 1 if the command is omitted or is invalid, if it cannot read input files, or if there is a mismatch between their data.

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