Intel® C++ Compiler Classic Developer Guide and Reference
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Visible to Intel only — GUID: GUID-34F1A9DB-1B28-4EF3-B6D1-613210BBB96F
_xsaveopt()
Saves the states of x87 FPU, MMX, XMM, YMM, and MXCSR registers to memory, optimizing the save operation if possible.
Syntax
extern void _xsaveopt(void *mem, unsigned __int64 save_mask); |
Arguments
- mem
-
A memory reference to FXSAVE area. The 512-bytes memory addressed by the reference must be 16-bytes aligned.
- save_mask
-
A bit mask specifying the extended states to be saved.
Description
Saves the states of x87 FPU, MMX, XMM, YMM, and MXCSR registers to memory, optimizing the save operation if possible. This intrinsic maps to XSAVEOPT instruction.