/* { dg-do compile { target i?86-*-* x86_64-*-* } } */ /* { dg-options -O0 } */ typedef int SItype __attribute__ ((mode (SI))); typedef int DItype __attribute__ ((mode (DI))); typedef unsigned int USItype __attribute__ ((mode (SI))); struct DIstruct {SItype low, high;}; typedef union { struct DIstruct s; DItype ll; } DIunion; DItype __muldi3 (DItype u, DItype v) { DIunion w; DIunion uu, vv; uu.ll = u, vv.ll = v; w.ll = ({DIunion __w; __asm__ ("mull %3" : "=a" ((USItype) ( __w.s.low )), "=d" ((USItype) ( __w.s.high )) : "%0" ((USItype) ( uu.s.low )), "rm" ((USItype) ( vv.s.low ))) ; __w.ll; }) ; w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high + (USItype) uu.s.high * (USItype) vv.s.low); return w.ll; }