https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69053
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Certainly bougs though. The following works for me - can you test that?
Index: gcc/tree-vect-loop.c
===================================================================
--- gcc/tree-vect-loop.c (revision 232213)
+++ gcc/tree-vect-loop.c (working copy)
@@ -4063,10 +4075,10 @@ get_initial_def_for_reduction (gimple *s
tree *elts;
int i;
bool nested_in_vect_loop = false;
- tree init_value;
REAL_VALUE_TYPE real_init_val = dconst0;
int int_init_val = 0;
gimple *def_stmt = NULL;
+ gimple_seq stmts = NULL;
gcc_assert (vectype);
nunits = TYPE_VECTOR_SUBPARTS (vectype);
@@ -4095,16 +4107,6 @@ get_initial_def_for_reduction (gimple *s
return vect_create_destination_var (init_val, vectype);
}
- if (TREE_CONSTANT (init_val))
- {
- if (SCALAR_FLOAT_TYPE_P (scalar_type))
- init_value = build_real (scalar_type, TREE_REAL_CST (init_val));
- else
- init_value = build_int_cst (scalar_type, TREE_INT_CST_LOW (init_val));
- }
- else
- init_value = init_val;
-
switch (code)
{
case WIDEN_SUM_EXPR:
@@ -4181,7 +4183,10 @@ get_initial_def_for_reduction (gimple *s
break;
}
}
- init_def = build_vector_from_val (vectype, init_value);
+ init_val = gimple_convert (&stmts, TREE_TYPE (vectype), init_val);
+ if (! gimple_seq_empty_p (stmts))
+ gsi_insert_seq_on_edge_immediate (loop_preheader_edge (loop), stmts);
+ init_def = build_vector_from_val (vectype, init_val);
break;
default:
