https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94665
--- Comment #12 from z.zhanghaijian at huawei dot com <z.zhanghaijian at huawei
dot com> ---
(In reply to Segher Boessenkool from comment #11)
> Confirmed the comment 4 problem, on all archs. This is a very old bug.
Ok to me, can this optimization change flag_unsafe_math_optimizations to
flag_finite_math_only?
Like the patch:
diff --git a/gcc/combine.c b/gcc/combine.c
index cff76cd3303..f394d8dfd03 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -6643,7 +6643,7 @@ simplify_if_then_else (rtx x)
/* Look for MIN or MAX. */
- if ((! FLOAT_MODE_P (mode) || flag_unsafe_math_optimizations)
+ if ((! FLOAT_MODE_P (mode) || flag_finite_math_only)
&& comparison_p
&& rtx_equal_p (XEXP (cond, 0), true_rtx)
&& rtx_equal_p (XEXP (cond, 1), false_rtx)
Can this fix the bug？
