GBE: initialize BTI structure to zero.

Clear to zero to avoid garbage data, as we do not
assign it later for local/constant memory access.

v2:
  move initialization code into constructor.

Signed-off-by: Ruiling Song <ruiling.song@intel.com>
Reviewed-by: Yang Rong <rong.r.yang@intel.com>

diff --git a/backend/src/ir/instruction.hpp b/backend/src/ir/instruction.hpp
index e4c415e..0db950d 100644 (file)
--- a/backend/src/ir/instruction.hpp
+++ b/backend/src/ir/instruction.hpp
@@ -38,6 +38,10 @@ namespace ir {
   struct BTI {
     uint8_t bti[MAX_MIXED_POINTER];
     uint8_t count;
+    BTI() : count(0) {
+      memset(bti, 0, MAX_MIXED_POINTER);
+    }
+    ~BTI() {}
   };
 
   /*! All opcodes */