A.5.241 PMULHW, PMULLW: Multiply Packed 16-bit Integers, and Store
PMULHW mm1,mm2/m64 ; 0F E5 /r [PENT,MMX]
PMULLW mm1,mm2/m64 ; 0F D5 /r [PENT,MMX]
PMULHW xmm1,xmm2/m128 ; 66 0F E5 /r [WILLAMETTE,SSE2]
PMULLW xmm1,xmm2/m128 ; 66 0F D5 /r [WILLAMETTE,SSE2]
PMULxW takes two packed unsigned 16-bit integer inputs, and multiplies
the values in the inputs, forming doubleword results.
- PMULHW then stores the top 16 bits of each doubleword in the
destination (first) operand;
- PMULLW stores the bottom 16 bits of each doubleword in the
destination operand.