I didn't find anything using EDGE_DFS_BACK in RTL infrastructure
used by var-tracking or var-tracking itself, the following removes
this computation.
Bootstrapped and tested on x86_64-unknown-linux-gnu.
I'll push this on Monday unless somebody points out my obvious mistake.
Richard.
2020-07-24 Richard Biener <rguent...@suse.de>
* var-tracking.c (variable_tracking_main_1): Remove call
to mark_dfs_back_edges.
---
gcc/var-tracking.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c
index cca75064c8b..a345fb47eb7 100644
--- a/gcc/var-tracking.c
+++ b/gcc/var-tracking.c
@@ -10481,7 +10481,6 @@ variable_tracking_main_1 (void)
return 0;
}
- mark_dfs_back_edges ();
if (!vt_initialize ())
{
vt_finalize ();
--
2.25.1
