summaryrefslogtreecommitdiff
path: root/tests/cris/check_gcctorture_pr28634.c
diff options
context:
space:
mode:
Diffstat (limited to 'tests/cris/check_gcctorture_pr28634.c')
-rw-r--r--tests/cris/check_gcctorture_pr28634.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/cris/check_gcctorture_pr28634.c b/tests/cris/check_gcctorture_pr28634.c
new file mode 100644
index 0000000000..a0c525497d
--- /dev/null
+++ b/tests/cris/check_gcctorture_pr28634.c
@@ -0,0 +1,15 @@
+/* PR rtl-optimization/28634. On targets with delayed branches,
+ dbr_schedule could do the next iteration's addition in the
+ branch delay slot, then subtract the value again if the branch
+ wasn't taken. This can lead to rounding errors. */
+double x = -0x1.0p53;
+double y = 1;
+int
+main (void)
+{
+ while (y > 0)
+ y += x;
+ if (y != x + 1)
+ abort ();
+ exit (0);
+}