diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/volatile-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/volatile-1.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/volatile-1.c b/gcc/testsuite/gcc.target/i386/volatile-1.c new file mode 100644 index 000000000..714314cee --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/volatile-1.c @@ -0,0 +1,14 @@ +/* PR optimization/11381 */ +/* Originator: <tobias@ringstrom.mine.nu> */ +/* { dg-do compile } */ +/* { dg-options "-O" } */ + +/* Verify that the comparison is not optimized away. */ + +void foo(volatile unsigned int *vaddr) +{ + while (*vaddr != *vaddr) + ; +} + +/* { dg-final { scan-assembler "cmp" } } */ |