CONFIG_SSE_FP_MATH:

This option allows the compiler to generate SSEx instructions for performing floating point math. This can greatly improve performance when exactly the same operations are to be performed on multiple data objects; however, it can also significantly reduce performance when pre-emptive task switches occur because of the larger register set that must be saved and restored.

Disabling this option means that the compiler utilizes only the x87 instruction set for floating point operations.

Symbol:

SSE_FP_MATH

Type:

bool

Value:

“n”

User value:

(no user value)

Visibility:

“n”

Is choice item:

false

Is defined:

true

Is from env.:

false

Is special:

false

Prompts:

• “Compiler-generated SSEx instructions” if SSE (value: “n”)

Default values:

• n (value: “n”)
• Condition: SSE (value: “n”)

Selects:

(no selects)

Reverse (select-related) dependencies:  

(no reverse dependencies)

Additional dependencies from enclosing menus and ifs:  

CPU_HAS_FPU && X86 (value: “y”)

Locations:

• ../arch/x86/Kconfig:112