Specifies the level of inline function expansion.
Windows: C/C++ > Optimization > Inline Function Expansion
Linux: Optimization > Inline Function Expansion
Mac OS: Optimization > Inline Function Expansion Only INLINE directive
IA-32 architecture, Intel® 64 architecture, IA-64 architecture
| Linux and Mac OS: | -inline-level=n |
| Windows: | /Obn |
| n | Is the inline function expansion level. Possible values are 0, 1, and 2. |
| -inline-level=2 or Ob2 | This is the default if option O2 is specified or is in effect by default. On Windows systems, this is also the default if option O3 is specified. |
| -inline-level=0 or Ob0 | This is the default if option -O0 (Linux and Mac OS) or /Od (Windows) is specified. |
This option specifies the level of inline function expansion. Inlining procedures can greatly improve the run-time performance of certain programs.
| Option | Description |
|---|---|
| -inline-level=0 or Ob0 | Disables inlining of user-defined functions. Note that statement functions are always inlined. |
| -inline-level=1 or Ob1 | Enables inlining when an inline keyword or an inline attribute is specified. Also enables inlining according to the C++ language. |
| -inline-level=2 or Ob2 | Enables inlining of any function at the compiler's discretion. |
Linux: -Ob (this is a deprecated
option)
Mac OS: None
Windows: None