These options are supported on IA-32 and Intel® 64 architectures.
Linux* OS and Mac OS* X |
Windows* OS |
Description |
|---|---|---|
-vec -no-vec |
/Qvec /Qvec- |
Enables or disables vectorization and transformations enabled for vectorization. Vectorization is enabled by default. To disable, use -no-vec (Linux* and MacOS* X) or /Qvec- (Windows*) option. Supported on IA-32 and Intel® 64 architectures only. |
-vec-report |
/Qvec-report |
Controls the diagnostic messages from the vectorizer. See Vectorization Report. |
-simd -no-simd |
/Qsimd /Qsimd- |
Controls user-mandated (SIMD) vectorization. User-mandated (SIMD) vectorization is enabled by default. Use the -no-simd (Linux* or MacOS* X) or /Qsimd- (Windows*) option to disable SIMD transformations for vectorization. |
When used with -x or -ax, the compiler may perform additional vectorizations for Intel® microprocessors. than it performs for non-Intel microprocessors.
Vectorization within the Intel® compiler depends upon ability of the compiler to disambiguate memory references. Certain options may enable the compiler to do better vectorization.
Using the -vec (Linux*) or the /Qvec (Windows*) option enables vectorization at default optimization levels for both Intel® microprocessors and non-Intel microprocessors. Vectorization may call library routines that can result in additional performance gain on Intel microprocessors than on non-Intel microprocessors. The vectorization can also be affected by certain options, such as /arch or /Qx (Windows) or -m or -x (Linux and Mac OS X).
Refer to Quick Reference Lists for a complete listing of the quick reference topics.
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