------- Additional Comments From torgeihe at stud dot ntnu dot no 2004-11-15 16:26 ------- Subject: Re: _mm_move_ss SSE intrinsic causes erroneous
pinskia at gcc dot gnu dot org wrote: > ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-11-15 > 15:47 ------- > No you are reading the asm backwards, the corresponding intel asm is: > bug: subss %xmm0, %xmm1 > ret > > Which you can get with -masm=intel. > Yes, I know AT&T syntax is backwards compared to Intel, have I misinterpreted the intrinsics or resulting code somehow? To be more clear, I expected the C function to return the following vector: v0 = a0 v1 = a1 - b1 v2 = a2 - b2 v3 = a3 - b3 Instead it seems to return: v0 = a0 - b0 v1 = a1 v2 = a2 v3 = a3 _mm_move_ss should the three upper values from its first argument, and the lower from its second, no? Torgeir -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18503
