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Selects a predefined set of options that affect the size and speed of generated code.
Syntax
The
/O1
and
/O2
compiler options are a quick way to set several specific optimization options at once. The
/O1
option sets the individual optimization options that create the smallest code in the majority of cases. The
/O2
option sets the options that create the fastest code in the majority of cases. The
/O2
option is the default for release builds. This table shows the specific options that are set by
/O1
and
/O2
:
Option
Equivalent to
x86-specific
These options imply the use of the Frame-Pointer Omission (
/Oy
) option.
To set this compiler option in the Visual Studio development environment
Open the project's
Property Pages
dialog box. For details, see
Set C++ compiler and build properties in Visual Studio
.
Select the
Configuration Properties
>
C/C++
>
Optimization
property page.
Modify the
Optimization
property.
To set this compiler option programmatically
See
Optimization
.
See also
/O
options (Optimize code)
MSVC compiler options
MSVC compiler command-line syntax
/EH
(Exception handling model)
