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opt_vectorize_loops
Description:
Controls the use of loop vectorizing optimization.
Compatibility:
This pragma is compatible with the following platform targets:
Prototype:
#pragma opt_vectorize_loops on | off | reset
Remarks:
When this option is on the compiler improves loop performance.
NOTE
Do not confuse loop vectorizing with PowerPC Altivec vector instructions. Loop vectorizing is the rearrangement of instructions in loops to improve performance. PowerPC Altivec instructions are specialized instructions that manipulate vectors and are available only on specific PowerPC processors. For more information on Altivec, see "altivec_codegen," "altivec_model," and "altivec_vrsave."
The pragma doesn't correspond to an option in any settings panel. To check whether this option is on, use __option (opt_vectorize_loops), described in "Checking Options."
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Last updated: August 17, 2000