diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/signbit-1.c')
-rw-r--r-- | gcc/testsuite/gcc.target/i386/signbit-1.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/signbit-1.c b/gcc/testsuite/gcc.target/i386/signbit-1.c new file mode 100644 index 000000000..745796d70 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/signbit-1.c @@ -0,0 +1,29 @@ +/* PR optimization/8746 */ +/* { dg-do run } */ +/* { dg-require-effective-target ilp32 } */ +/* { dg-options "-O1 -mtune=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; +} |