Intel® oneAPI DPC++/C++ Compiler Developer Guide and Reference

ID 767253
Date 9/08/2022
Public

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Document Table of Contents

momit-leaf-frame-pointer

Determines whether the frame pointer is omitted or kept in leaf functions.

Syntax

Linux:

-momit-leaf-frame-pointer

-mno-omit-leaf-frame-pointer

Windows:

None

Arguments

None

Default

Varies

If you specify option -fomit-frame-pointer (or it is set by default), the default is -momit-leaf-frame-pointer. If you specify option -fno-omit-frame-pointer, the default is -mno-omit-leaf-frame-pointer.

Description

This option determines whether the frame pointer is omitted or kept in leaf functions. It is related to option -f[no-]omit-frame-pointer and the setting for that option has an effect on this option.

Consider the following option combinations:

Option Combination

Result

-fomit-frame-pointer -momit-leaf-frame-pointer

or

-fomit-frame-pointer -mno-omit-leaf-frame-pointer

Both combinations are the same as specifying -fomit-frame-pointer. Frame pointers are omitted for all routines.

-fno-omit-frame-pointer -momit-leaf-frame-pointer

In this case, the frame pointer is omitted for leaf routines, but other routines will keep the frame pointer.

This is the intended effect of option -momit-leaf-frame-pointer.

-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer

In this case, -mno-omit-leaf-frame-pointer is ignored since -fno-omit-frame-pointer retains frame pointers in all routines .

This combination is the same as specifying -fno-omit-frame-pointer.

This option is provided for compatibility with gcc.

NOTE:

This option only applies to host compilation. When offloading is enabled, it does not impact device-specific compilation.

IDE Equivalent

Visual Studio: None

Eclipse: Optimization > Omit frame pointer for leaf routines

Alternate Options

None

See Also