https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118727
--- Comment #6 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
Hmm now me the easiest way is just not to run
vect_look_through_possible_promotion:
diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
index 45fcec40a28..533f4816270 100644
--- a/gcc/tree-vect-patterns.cc
+++ b/gcc/tree-vect-patterns.cc
@@ -1407,7 +1407,7 @@ vect_recog_sad_pattern (vec_info *vinfo,
tree abd_oprnd0 = gimple_call_arg (abd_stmt, 0);
tree abd_oprnd1 = gimple_call_arg (abd_stmt, 1);
- if (gimple_call_internal_fn (abd_stmt) == IFN_ABD)
+ if (gimple_call_internal_fn (abd_stmt) == IFN_ABD/*)
{
if (!vect_look_through_possible_promotion (vinfo, abd_oprnd0,
&unprom[0])
@@ -1416,7 +1416,7 @@ vect_recog_sad_pattern (vec_info *vinfo,
return NULL;
abd_optype = TREE_TYPE (abd_oprnd0);
}
- else if (gimple_call_internal_fn (abd_stmt) == IFN_VEC_WIDEN_ABD)
+ else if (*/|| gimple_call_internal_fn (abd_stmt) == IFN_VEC_WIDEN_ABD)
{
unprom[0].op = abd_oprnd0;
unprom[0].type = TREE_TYPE (abd_oprnd0);
I cannot see any bad effect from this. I'll bootstrap it.
