The following removes the fixup we apply to pattern stmts before
code generating vector epilogues. While I did expect this isn't
necessary anymore since the SLP graph now exclusively records the
data flow now, I expected "details" to mess this up. In particular
1/2 of this series fixes the one place I expected test coverage,
OMP scan-stores, so I disabled epilogue vectorization with those.
We are not ready to kill off adjusting gather/scatter DR things,
the series remembering the get_load_store_type results will. Then
we can scrap all of this code.
Bootstrapped and tested on x86_64-unknown-linux-gnu.
* tree-vect-loop.cc (update_epilogue_loop_vinfo): Remove
fixing up pattern stmt operands.
---
gcc/tree-vect-loop.cc | 27 ---------------------------
1 file changed, 27 deletions(-)
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index ce08909ab83..b036fbb34a5 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -11256,33 +11256,6 @@ update_epilogue_loop_vinfo (class loop *epilogue, tree
advance)
}
}
- /* The PATTERN_DEF_SEQs and RELATED_STMTs in the epilogue were constructed
- using the original main loop and thus need to be updated to refer to the
- cloned variables used in the epilogue. */
- for (unsigned i = 0; i < stmt_worklist.length (); ++i)
- {
- gimple *stmt = stmt_worklist[i];
- tree *new_op;
-
- for (unsigned j = 1; j < gimple_num_ops (stmt); ++j)
- {
- tree op = gimple_op (stmt, j);
- if ((new_op = mapping.get(op)))
- gimple_set_op (stmt, j, *new_op);
- else
- {
- /* PR92429: The last argument of simplify_replace_tree disables
- folding when replacing arguments. This is required as
- otherwise you might end up with different statements than the
- ones analyzed in vect_loop_analyze, leading to different
- vectorization. */
- op = simplify_replace_tree (op, NULL_TREE, NULL_TREE,
- &find_in_mapping, &mapping, false);
- gimple_set_op (stmt, j, op);
- }
- }
- }
-
struct data_reference *dr;
vec<data_reference_p> datarefs = LOOP_VINFO_DATAREFS (epilogue_vinfo);
FOR_EACH_VEC_ELT (datarefs, i, dr)
--
2.43.0
