Developer Guide and Reference

Contents

qopt-class-analysis, Qopt-class-analysis

Determines whether C++ class hierarchy information is used to analyze and resolve C++ virtual function calls at compile time.

Syntax

Linux and macOS:
-qopt-class-analysis
-qno-opt-class-analysis
Windows:
/Qopt-class-analysis
/Qopt-class-analysis-
Arguments
None
Default
-qno-opt-class-analysis
or
/Qopt-class-analysis-
C++ class hierarchy information is not used to analyze and resolve C++ virtual function calls at compile time.
Description
This option determines whether C++ class hierarchy information is used to analyze and resolve C++ virtual function calls at compile time. The option is turned on by default with the
-ipo
compiler option, enabling improved C++ optimization. If a C++ application contains non-standard C++ constructs, such as pointer down-casting, it may result in different behaviors.
Alternate Options
None

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804