diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/990130-1.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/i386/990130-1.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/990130-1.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/990130-1.c new file mode 100644 index 000000000..b2754fb08 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/990130-1.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { 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; +} |