[Bug target/56788] _mm_frcz_sd and _mm_frcz_ss ignore their second argument

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56788

--- Comment #7 from Marc Glisse <glisse at gcc dot gnu.org> ---
Ah no, I was wrong, sorry about that:

The VFRCZSS and VFRCZSD instructions extract the fractional portion of the
single-/double-precision scalar floating-point value in an XMM register or 32-
or 64-bit memory location and writes the result in the lower element of the
destination register. The upper elements of the destination XMM register are
unaffected by the operation, while the upper 128 bits of the
corresponding YMM register are cleared to zeros

http://support.amd.com/TechDocs/43479.pdf