Developer Guide and Reference

Contents

unroll-aggressive, Qunroll-aggressive

Determines whether the compiler uses more aggressive unrolling for certain loops.

Syntax

Linux:
-unroll-aggressive
-no-unroll-aggressive
macOS:
-unroll-aggressive
-no-unroll-aggressive
Windows:
/Qunroll-aggressive
/Qunroll-aggressive-
Arguments
None
Default
-no-unroll-aggressive
or
/Qunroll-aggressive-
The compiler uses default heuristics when unrolling loops.
Description
This option determines whether the compiler uses more aggressive unrolling for certain loops. The positive form of the option may improve performance.
This option enables aggressive, complete unrolling for loops with small constant trip counts.
Alternate Options
None

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804