https://community.intel.com/t5/Software-Tuning-Performance/is-it-safe-to-shuffle-integer-values-with-VSHUFPS/m-p/1520314#M8213 <P>Given the following instructions:</P><P>&nbsp;</P><P>vmovdqu8 ymm0, ymmword ptr [rdi]</P><P>vmovdqu8 ymm1, ymmword ptr [rdi+0x20]</P><P>vshufps ymm2, ymm1, ymm0, 0x88</P><P>&nbsp;</P><P>We loaded integer type data to ymm0 and ymm1 registers with&nbsp;vmovdqu8 instruction, then a float precision shuffling instruction 'vshufps' was used afterwards.&nbsp;</P><P>&nbsp;</P><P>I would like to know if it is safe to use 'vshufps' instruction in this place. Any potential risk here?</P><P>&nbsp;</P><P>Thanks</P> Mon, 04 Sep 2023 14:47:53 GMT Huaqiang_W_Intel 2023-09-04T14:47:53Z https://community.intel.com/t5/Software-Tuning-Performance/is-it-safe-to-shuffle-integer-values-with-VSHUFPS/m-p/1520314#M8213 <P>Given the following instructions:</P><P>&nbsp;</P><P>vmovdqu8 ymm0, ymmword ptr [rdi]</P><P>vmovdqu8 ymm1, ymmword ptr [rdi+0x20]</P><P>vshufps ymm2, ymm1, ymm0, 0x88</P><P>&nbsp;</P><P>We loaded integer type data to ymm0 and ymm1 registers with&nbsp;vmovdqu8 instruction, then a float precision shuffling instruction 'vshufps' was used afterwards.&nbsp;</P><P>&nbsp;</P><P>I would like to know if it is safe to use 'vshufps' instruction in this place. Any potential risk here?</P><P>&nbsp;</P><P>Thanks</P> Mon, 04 Sep 2023 14:47:53 GMT https://community.intel.com/t5/Software-Tuning-Performance/is-it-safe-to-shuffle-integer-values-with-VSHUFPS/m-p/1520314#M8213 Huaqiang_W_Intel 2023-09-04T14:47:53Z