diff options
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/990130-1.c | 24 |
2 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 62a44ef..15cb42e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +Sat Jan 30 11:10:06 1999 Jeffrey A Law (law@cygnus.com) + + * gcc.dg/990130-1.c: New test. + Sun Jan 17 00:02:33 1999 Jeffrey A Law (law@cygnus.com) * gcc.dg/990117-1.c: New test. diff --git a/gcc/testsuite/gcc.dg/990130-1.c b/gcc/testsuite/gcc.dg/990130-1.c new file mode 100644 index 0000000..3e711c2 --- /dev/null +++ b/gcc/testsuite/gcc.dg/990130-1.c @@ -0,0 +1,24 @@ +/* { dg-do compile { target i?86-*-* } } */ +/* { 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; +} |