diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/pr19988.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr19988.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr19988.c b/gcc/testsuite/gcc.dg/pr19988.c new file mode 100644 index 00000000000..aa2fed13961 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr19988.c @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-optimized -fdump-tree-original" } */ + +double foo(double x, double y) +{ + return ((x + 0.1234 * y) * (x - 0.1234 * y)); +} + +/* Keep positive constants during folding. */ +/* { dg-final { scan-tree-dump-times " 1.23" 2 "original" } } */ +/* CSE one multiplication. */ +/* { dg-final { scan-tree-dump-times " \\\* " 2 "optimized" } } */ +/* { dg-final { cleanup-tree-dump "original" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |