https://gcc.gnu.org/g:1bf102afed70d88d757d6f7b3014523e66ab42ff
commit r16-3295-g1bf102afed70d88d757d6f7b3014523e66ab42ff
Author: Richard Biener <rguent...@suse.de>
Date: Wed Jul 30 15:38:03 2025 +0200
Enable gather/scatter for epilogues of vector epilogues
The restriction no longer applies, so remove it.
* tree-vect-data-refs.cc (vect_check_gather_scatter):
Remove restriction on epilogue of epilogue vectorization.
Diff:
---
gcc/tree-vect-data-refs.cc | 7 -------
1 file changed, 7 deletions(-)
diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc
index 4cfd1a301c2b..f9bf6a216970 100644
--- a/gcc/tree-vect-data-refs.cc
+++ b/gcc/tree-vect-data-refs.cc
@@ -4597,13 +4597,6 @@ vect_check_gather_scatter (stmt_vec_info stmt_info,
loop_vec_info loop_vinfo,
masked_p = (ifn == IFN_MASK_LOAD || ifn == IFN_MASK_STORE);
}
- /* ??? For epilogues we adjust DR_REF to make the following stmt-based
- analysis work, but this adjustment doesn't work for epilogues of
- epilogues during transform, so disable gather/scatter in that case. */
- if (LOOP_VINFO_EPILOGUE_P (loop_vinfo)
- && LOOP_VINFO_EPILOGUE_P (LOOP_VINFO_ORIG_LOOP_INFO (loop_vinfo)))
- return false;
-
/* True if we should aim to use internal functions rather than
built-in functions. */
bool use_ifn_p = (DR_IS_READ (dr)
