Maximizes speed across the entire program. This content is specific to C++; it does not apply to DPC++.
Linux: | -fast |
Windows: | /fast |
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OFF |
The optimizations that maximize speed are not enabled. |
This option maximizes speed across the entire program.
It sets the following options:
On Windows* systems: /O3, /Qipo, /Qprec-div-, /fp:fast=2
On Linux* systems: -ipo, -O3, -static, -fp-model fast=2
For example:
On Linux* systems, if you specify option -fast -xSSE3, option -xSSE3 takes effect.
On Windows* systems, if you specify option /fast /QxSSE3, option/QxSSE3 takes effect.
Option fast sets some aggressive optimizations that may not be appropriate for all applications. The resulting executable may not run on processor types different from the one on which you compile. You should make sure that you understand the individual optimization options that are enabled by option fast.
Product and Performance Information |
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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201 |
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