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-rw-r--r--gcc/ChangeLog5
-rw-r--r--gcc/calls.c2
-rw-r--r--gcc/tree-vect-patterns.c2
3 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 86c7dc61237..92f660241d4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
2011-12-21 Jakub Jelinek <jakub@redhat.com>
+ * tree-vect-patterns.c (vect_operation_fits_smaller_type): Initialize
+ *op0 and *op1 to NULL_TREE first to avoid warnings.
+ * calls.c (initialize_argument_information): Initialize base to avoid
+ warnings.
+
PR middle-end/51644
PR middle-end/51647
* tree-eh.c (decide_copy_try_finally): At -O0, return true
diff --git a/gcc/calls.c b/gcc/calls.c
index 0ef0cad8d27..c8d0b849985 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -1157,7 +1157,7 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
type, argpos < n_named_args))
{
bool callee_copies;
- tree base;
+ tree base = NULL_TREE;
callee_copies
= reference_callee_copied (args_so_far_pnt, TYPE_MODE (type),
diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index a5b8af911aa..46d43ce44ad 100644
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -900,6 +900,8 @@ vect_operation_fits_smaller_type (gimple stmt, tree def, tree *new_type,
loop_vec_info loop_info = STMT_VINFO_LOOP_VINFO (vinfo_for_stmt (stmt));
struct loop *loop = LOOP_VINFO_LOOP (loop_info);
+ *op0 = NULL_TREE;
+ *op1 = NULL_TREE;
*new_def_stmt = NULL;
if (!is_gimple_assign (stmt))
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