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fix memory leaks 

This fixes various vec<> memory leaks as discovered compiling 521.wrf_r.

2021-02-02  Richard Biener  <rguenther@suse.de>

	* gimple-loop-interchange.cc (prepare_data_references):
	Release vectors.
	* gimple-loop-jam.c (tree_loop_unroll_and_jam): Likewise.
	* tree-ssa-loop-im.c (hoist_memory_references): Likewise.
	* tree-vect-stmts.c (vectorizable_condition): Do not
	allocate vectors.
	(vectorizable_comparison): Likewise.
This commit is contained in:
Richard Biener 2021-02-02 19:21:02 +01:00
parent db53dd4f78
commit 5d5130ad5c
4 changed files with 11 additions and 19 deletions
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10
gcc/gimple-loop-interchange.cc
View File

@ -1940,7 +1940,10 @@ prepare_data_references (class loop *loop, vec<data_reference_p> *datarefs)
delete bb_refs;
}
else if (bb_refs->is_empty ())
delete bb_refs;
{
bb_refs->release ();
delete bb_refs;
}
else
bb->aux = bb_refs;
}
@ -1954,7 +1957,10 @@ prepare_data_references (class loop *loop, vec<data_reference_p> *datarefs)
bb_refs = (vec<data_reference_p> *) bb->aux;
if (loop_nest && flow_bb_inside_loop_p (loop_nest, bb))
datarefs->safe_splice (*bb_refs);
{
datarefs->safe_splice (*bb_refs);
bb_refs->release ();
}
else
free_data_refs (*bb_refs);

6
gcc/gimple-loop-jam.c
View File

@ -505,15 +505,13 @@ tree_loop_unroll_and_jam (void)
if (!unroll_jam_possible_p (outer, loop))
continue;
vec<data_reference_p> datarefs;
vec<ddr_p> dependences;
vec<data_reference_p> datarefs = vNULL;
vec<ddr_p> dependences = vNULL;
unsigned unroll_factor, profit_unroll, removed;
class tree_niter_desc desc;
bool unroll = false;
auto_vec<loop_p, 3> loop_nest;
dependences.create (10);
datarefs.create (10);
if (!compute_data_dependences_for_loop (outer, true, &loop_nest,
&datarefs, &dependences))
{

1
gcc/tree-ssa-loop-im.c
View File

@ -2508,6 +2508,7 @@ hoist_memory_references (class loop *loop, bitmap mem_refs,
if (res != 1)
{
bitmap_copy (refs_not_supported, mem_refs);
seq.release ();
break;
}
sms.safe_push (std::make_pair (e, seq));

13
gcc/tree-vect-stmts.c
View File

@ -10085,14 +10085,6 @@ vectorizable_condition (vec_info *vinfo,
/* Transform. */
if (!slp_node)
{
vec_oprnds0.create (1);
vec_oprnds1.create (1);
vec_oprnds2.create (1);
vec_oprnds3.create (1);
}
/* Handle def. */
scalar_dest = gimple_assign_lhs (stmt);
if (reduction_type != EXTRACT_LAST_REDUCTION)
@ -10480,11 +10472,6 @@ vectorizable_comparison (vec_info *vinfo,
}
/* Transform. */
if (!slp_node)
{
vec_oprnds0.create (1);
vec_oprnds1.create (1);
}
/* Handle def. */
lhs = gimple_assign_lhs (stmt);