Using HLO

Windows*

Linux*

Description

Notes

-O3

-O3

Same as -O2, plus loop transformation and data prefetching.

For applications that make heavy use of floating point calculations on large data sets.

In conjunction with the vectorization options, -Qax{K|W|N|B|P} and -Qx{K|W|N|B|P}, for Pentium® 4 and later processors, this option causes the compiler to perform more aggressive data dependency analysis than for -O2. This may result in longer compilation times.

Compiler Option Quick Reference

Example

prompt>icl -O3 -QaxN myprog.cpp