• 19.1
  • 12/16/2019
  • Public Content
Contents

qsimd-honor-fp-model, Qsimd-honor-fp-model

Tells the compiler to obey the selected floating-point model when vectorizing SIMD loops.

Syntax

Linux:
-qsimd-honor-fp-model
-qno-simd-honor-fp-model
macOS:
-qsimd-honor-fp-model
-qno-simd-honor-fp-model
Windows:
/Qsimd-honor-fp-model
/Qsimd-honor-fp-model-
Arguments
None
Default
-qno-simd-honor-fp-model
or
/Qsimd-honor-fp-model-
The compiler performs vectorization of SIMD loops even if it breaks the floating-point model setting.
Description
The OpenMP* SIMD specification and the setting of compiler option
-fp-model
(Linux* and
macOS*
) or
/fp
(Windows*) can contradict in requirements. When contradiction occurs, the default behavior of the compiler is to follow the OpenMP* specification and therefore vectorize the loop.
This option lets you override this default behavior - it causes the compiler to follow the
-fp-model
(or
/fp
) specification. This means that the compiler will serialize the loop.
This option does not affect automatic vectorization of loops. By default, the compiler uses
-fp-model
(Linux*
and
macOS*
) or
/fp
(Windows*) settings for this.
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