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-rw-r--r--gcc/testsuite/gcc.dg/vect/bb-slp-div-1.c5
-rw-r--r--gcc/tree-vect-slp.c15
2 files changed, 16 insertions, 4 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-div-1.c b/gcc/testsuite/gcc.dg/vect/bb-slp-div-1.c
index 87ffc9b..1eea923 100644
--- a/gcc/testsuite/gcc.dg/vect/bb-slp-div-1.c
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-div-1.c
@@ -16,4 +16,7 @@ f (void)
x[7] /= 9;
}
-/* { dg-final { scan-tree-dump "optimized: basic block" "slp2" { xfail *-*-* } } } */
+/* We can vectorize the store from a CTOR built from scalar division
+ results but ideally we'd like to see vectorizing the load and the
+ division as well. */
+/* { dg-final { scan-tree-dump "transform load" "slp2" { xfail *-*-* } } } */
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index d248ce2..e93e9c7 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -544,12 +544,21 @@ vect_get_and_check_slp_defs (vec_info *vinfo, unsigned char swap,
continue;
}
- if (def_stmt_info && is_pattern_stmt_p (def_stmt_info))
- oprnd_info->any_pattern = true;
-
oprnd_info->def_stmts.quick_push (def_stmt_info);
oprnd_info->ops.quick_push (oprnd);
+ if (def_stmt_info
+ && is_pattern_stmt_p (def_stmt_info))
+ {
+ if (STMT_VINFO_RELATED_STMT (vect_orig_stmt (def_stmt_info))
+ != def_stmt_info)
+ oprnd_info->any_pattern = true;
+ else
+ /* If we promote this to external use the original stmt def. */
+ oprnd_info->ops.last ()
+ = gimple_get_lhs (vect_orig_stmt (def_stmt_info)->stmt);
+ }
+
/* If there's a extern def on a backedge make sure we can
code-generate at the region start.
??? This is another case that could be fixed by adjusting