Processor Dispatch Support (IA-32 only)

Option

Description

Default

-tpp5
IA-32 only 

Optimizes for the Intel PentiumŪ processor.
Enables best performance for PentiumŪ processor

OFF

-tpp6
IA-32 only
 

Optimizes for the Intel Pentium Pro, Pentium II, and Pentium III processors.
Enables best performance for the above processors.

-tpp6

-tpp7
IA-32 only
 

Optimizes for the Pentium 4 and Xeon(TM) processors. Requires the RedHat version 7.1 and support of Streaming SIMD Extensions 2.
Enables best performance for Pentium 4 processor

OFF

-ax{i|M|K|W}
IA-32 only 

Generates, on a single binary, code specialized to the extensions specified by the codes:
i  Pentium Pro, Pentium II processors
M  Pentium with MMX technology processor
K  Pentium III processor (Streaming SIMD Extensions)
W  Pentium 4 and Xeon processors
In addition, -ax generates IA-32 generic code. The generic code is usually slower.
Sets opportunities to generate versions of functions that use instructions supported on the specified processors for the best performance.

OFF

-x{i|M|K|W}
IA-32 only
 

Generate specialized code to run exclusively on the processors supporting the extensions indicated by the codes:
i  Pentium Pro, Pentium II processors
M  Pentium with MMX technology processor
K  Pentium III processor
W  Pentium 4 and Xeon processors
Sets opportunities to generate versions of functions that use instructions supported on the specified processors for the best performance.

OFF