# ipo-S, Qipo-S

Tells the compiler to optimize across multiple files and generate a single assembly file. This feature is only available for ifort.

## Syntax

Linux: | -ipo-S

macOS: | -ipo-S

Windows: | /Qipo-S

## Arguments

None

## Default

OFF | The compiler does not generate a multifile assembly file.

## Description

This option tells the compiler to optimize across multiple files and generate a single assembly file (named ipo_out.s on Linux* and macOS systems; ipo_out.asm on Windows* systems).

It performs the same optimizations as the [Q]ipo option, but compilation stops before the final link stage, leaving an optimized assembly file that can be used in further link steps.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Interprocedural Optimization Options

## See Also

ipo, Qipo compiler option