diff mbox series

Revert part of vect_analyze_early_break_dependences changes

Message ID 20240208104105.65E2238582A4@sourceware.org
State New
Headers show
Series Revert part of vect_analyze_early_break_dependences changes | expand

Commit Message

Richard Biener Feb. 8, 2024, 10:40 a.m. UTC 
I've reconsidered my last change to dr_may_alias_p and decided
it was correct before.  The following reverts that change.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

	* tree-vect-data-refs.cc (vect_analyze_early_break_dependences):
	Revert last change to dr_may_alias_p.
---
 gcc/tree-vect-data-refs.cc | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)
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Patch

diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc
index e16796323b3..2170d17e839 100644
--- a/gcc/tree-vect-data-refs.cc
+++ b/gcc/tree-vect-data-refs.cc
@@ -772,11 +772,7 @@  vect_analyze_early_break_dependences (loop_vec_info loop_vinfo)
 		 the store.  */
 
 	      for (auto dr_read : bases)
-		/* Note we're not passing the DRs in stmt order here
-		   since the DR dependence checking routine does not
-		   envision we're moving stores down.  The read-write
-		   order tricks it to avoid applying TBAA.  */
-		if (dr_may_alias_p (dr_read, dr_ref, loop_nest))
+		if (dr_may_alias_p (dr_ref, dr_read, loop_nest))
 		  {
 		    if (dump_enabled_p ())
 		      dump_printf_loc (MSG_MISSED_OPTIMIZATION,