Enables or disables compiler interpretation of simd pragmas.
Linux: | -simd -no-simd |
macOS: | -simd -no-simd |
Windows: | /Qsimd /Qsimd- |
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-simd |
SIMD pragmas are enabled. |
This option enables or disables compiler interpretation of simd pragmas.
To disable interpretation of simd pragmas, specify -no-simd (Linux* and macOS*) or /Qsimd- (Windows*). Note that the compiler may still vectorize loops based on its own heuristics (leading to generation of SIMD instructions) even when -no-simd (or /Qsimd-) is specified.
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 pragmas.
If you specify option -mia32 (Linux*) or option /arch:IA32 (Windows*), simd pragmas are disabled by default and vector instructions cannot be used. Therefore, you cannot explicitly enable SIMD pragmas by specifying option [Q]simd.
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