Developer Guide and Reference

Contents

mregparm

Lets you control the number registers used to pass integer arguments.
Architecture Restrictions
Only available on IA-32 architecture

Syntax

Linux:
-mregparm
=
n
macOS:
None
Windows:
None
Arguments
n
Specifies the number of registers to use when passing integer arguments. You can specify at most 3 registers. If you specify a nonzero value for
n
, you must build all modules, including startup modules, and all libraries, including system libraries, with the same value.
Default
OFF
The compiler does not use registers to pass arguments.
Description
Control the number registers used to pass integer arguments. This option is provided for compatibility with gcc.
Alternate Options
None