diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/i386-signbit-1.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/i386-signbit-1.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/i386-signbit-1.c b/gcc/testsuite/gcc.dg/i386-signbit-1.c new file mode 100644 index 00000000000..3bdc5906b7a --- /dev/null +++ b/gcc/testsuite/gcc.dg/i386-signbit-1.c @@ -0,0 +1,28 @@ +/* PR optimization/8746 */ +/* { dg-do run { target i?86-*-* } } */ +/* { dg-options "-O1 -mcpu=i586" } */ + +extern void abort (void); + +unsigned char r0; + +int foo(int x) +{ + unsigned char r = x&0xf0; + + if (!(r&0x80)) + { + r0 = r; + return 0; + } + else + return 1; +} + +int main(void) +{ + if (foo(0x80) != 1) + abort(); + + return 0; +} |