https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111002
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
here is the corrected patch:
diff --git a/gcc/match.pd b/gcc/match.pd
index 851f1af6eac..81666f28465 100644
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -4718,6 +4718,15 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
&& types_match (TREE_TYPE (@0), truth_type_for (type)))
(vec_cond @0 (convert! @1) (convert! @2))))
+/* Likewise for view_convert of nop_conversions. */
+(simplify
+ (view_convert (vec_cond:s @0 @1 @2))
+ (if (VECTOR_TYPE_P (type) && VECTOR_TYPE_P (TREE_TYPE (@1))
+ && known_eq (TYPE_VECTOR_SUBPARTS (type),
+ TYPE_VECTOR_SUBPARTS (TREE_TYPE (@1)))
+ && tree_nop_conversion_p (TREE_TYPE (type), TREE_TYPE (TREE_TYPE (@1))))
+ (vec_cond @0 (view_convert! @1) (view_convert! @2))))
+
/* Sink binary operation to branches, but only if we can fold it. */
(for op (tcc_comparison plus minus mult bit_and bit_ior bit_xor
lshift rshift rdiv trunc_div ceil_div floor_div round_div
