Visible to Intel only — GUID: GUID-B4045BFB-CB89-4FE2-9FDE-4FC96A4F4A01
Visible to Intel only — GUID: GUID-B4045BFB-CB89-4FE2-9FDE-4FC96A4F4A01
vec, Qvec
Enables or disables vectorization.
Syntax
Linux: |
-vec -no-vec |
macOS: |
-vec -no-vec |
Windows: |
/Qvec /Qvec- |
Arguments
None
Default
-vec |
Vectorization is enabled if option O2 or higher is in effect. |
Description
This option enables or disables vectorization.
To disable vectorization, specify -no-vec (Linux* and macOS) or /Qvec- (Windows*).
To disable interpretation of SIMD directives, specify -no-simd (Linux* and macOS) or /Qsimd- (Windows*).
To disable all compiler vectorization, use the "-no-vec -no-simd" (Linux* and macOS) or "/Qvec- /Qsimd-" (Windows*) compiler options. The option -no-vec (and /Qvec-) disables all auto-vectorization, including vectorization of array notation statements. The option -no-simd (and /Qsimd-) disables vectorization of loops that have SIMD directives.
Using this 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 (Windows), -m (Linux and macOS), or [Q]x.
This option only applies to host compilation. When offloading is enabled, it does not impact device-specific compilation. Offloading can only be enabled when using ifx.
IDE Equivalent
Alternate Options
None