[gcc(refs/users/marxin/heads/PR96597-fix-tree-ssa-sccvn-valgrind-error)] Add missing vn_reference_t::punned initialization

[Martin Liska]

https://gcc.gnu.org/g:3ffb038b47f718db9f78fb8248948e7944f8dbc8

commit 3ffb038b47f718db9f78fb8248948e7944f8dbc8
Author: Martin Liska <mliska@suse.cz>
Date:   Thu Aug 13 13:05:12 2020 +0200

    Add missing vn_reference_t::punned initialization
    
    gcc/ChangeLog:
    
            PR tree-optimization/96597
            * tree-ssa-sccvn.c (vn_reference_lookup_call): Add missing
            initialization of ::punned.
            (vn_reference_insert): Use consistently false instead of 0.
            (vn_reference_insert_pieces): Likewise.

Diff:
---
 gcc/tree-ssa-sccvn.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index 934ae40670d..789d3664db5 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -3578,6 +3578,7 @@ vn_reference_lookup_call (gcall *call, vn_reference_t *vnresult,
   vr->vuse = vuse ? SSA_VAL (vuse) : NULL_TREE;
   vr->operands = valueize_shared_reference_ops_from_call (call);
   vr->type = gimple_expr_type (call);
+  vr->punned = false;
   vr->set = 0;
   vr->base_set = 0;
   vr->hashcode = vn_reference_compute_hash (vr);
@@ -3601,7 +3602,7 @@ vn_reference_insert (tree op, tree result, tree vuse, tree vdef)
   vr1->vuse = vuse_ssa_val (vuse);
   vr1->operands = valueize_shared_reference_ops_from_ref (op, &tem).copy ();
   vr1->type = TREE_TYPE (op);
-  vr1->punned = 0;
+  vr1->punned = false;
   ao_ref op_ref;
   ao_ref_init (&op_ref, op);
   vr1->set = ao_ref_alias_set (&op_ref);
@@ -3661,7 +3662,7 @@ vn_reference_insert_pieces (tree vuse, alias_set_type set,
   vr1->vuse = vuse_ssa_val (vuse);
   vr1->operands = valueize_refs (operands);
   vr1->type = type;
-  vr1->punned = 0;
+  vr1->punned = false;
   vr1->set = set;
   vr1->base_set = base_set;
   vr1->hashcode = vn_reference_compute_hash (vr1);