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/GA (Optimize for Windows Application)


Using /GA for an .exe file results in more efficient code for accessing thread-local storage (TLS) variables. /GA speeds access to data declared with __declspec(thread) in a Windows 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 Setting Visual C++ Project Properties.
  2. Click the C/C++ folder.
  3. Click the Optimization property page.
  4. Modify the Optimize for Windows Application property.

To set this compiler option programmatically

See OptimizeForWindowsApplication Property.

See Also

Compiler Options | Setting Compiler Options

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