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Compiler Option: -vec

Documentation

Enables vector optimizations by the compiler.

Syntax



-vec < level >

Parameters

level

The level of vectorization: (0 | NONE) | 1 | 2.

Description

The -vec compiler option enables multiple levels of optimizations by searching for multiple scalar expressions that can be merged into a single vector expression. If this option is not specified, the default is -vec 0.

-vec 0 | none will disable vector optimizations.

-vec 1 will enable complete expression merging vectorization.

-vec 2 includes -vec 1 but also enables intra-expression vectorization.

This option is dependent on the -fpu SSE command line option. Attempting to enable vector optimizations without using -fpu SSE will generate an error.