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/GA (Optimize for Windows Application)

Results in more efficient code for an .exe file for accessing thread-local storage (TLS) variables.


/GA speeds access to data declared with __declspec(thread) in a Windows-based program. When this option is set, the __tls_index macro is assumed to be 0.

Using /GA for a DLL can result in bad code generation.

To set this compiler option in the Visual Studio development environment

  1. Open the project's Property Pages dialog box. For details, see How to: Open Project Property Pages.

  2. Click the C/C++ folder.

  3. Click the Command Line property page.

  4. Type the compiler option in the Additional Options box.

To set this compiler option programmatically