From: Richard Sandiford <richard.sandiford@arm.com>
Date: Tue, 15 Feb 2022 18:09:33 +0000 (+0000)
Subject: vect: Fix early free
X-Git-Tag: upstream/12.2.0~1452
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=63a9328cb8c601377fe73e214b708c4ae0441847;p=platform%2Fupstream%2Fgcc.git

vect: Fix early free

When updating the target costs interface, I failed to move the
free of the scalar costs beyond the new last use.

gcc/
	* tree-vect-slp.cc (vect_bb_vectorization_profitable_p): Fix
	use after free.
---

diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc
index e2cc721..273543d 100644
--- a/gcc/tree-vect-slp.cc
+++ b/gcc/tree-vect-slp.cc
@@ -5380,7 +5380,6 @@ vect_bb_vectorization_profitable_p (bb_vec_info bb_vinfo,
       unsigned dummy;
       finish_cost (scalar_target_cost_data, nullptr,
 		   &dummy, &scalar_cost, &dummy);
-      delete scalar_target_cost_data;
 
       /* Complete the target-specific vector cost calculation.  */
       class vector_costs *vect_target_cost_data = init_cost (bb_vinfo, false);
@@ -5393,6 +5392,7 @@ vect_bb_vectorization_profitable_p (bb_vec_info bb_vinfo,
 	     && li_vector_costs[vi].first == vl);
       finish_cost (vect_target_cost_data, scalar_target_cost_data,
 		   &vec_prologue_cost, &vec_inside_cost, &vec_epilogue_cost);
+      delete scalar_target_cost_data;
       delete vect_target_cost_data;
 
       vec_outside_cost = vec_prologue_cost + vec_epilogue_cost;