Modify the GenContext and GenEncoder's destructor to virtual

Signed-off-by: Junyan He <junyan.he@linux.intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

4 files changed, 8 insertions, 4 deletions

diff --git a/backend/src/backend/gen75_context.hpp b/backend/src/backend/gen75_context.hpp
index 2bb6e175..329b4164 100644
--- a/backend/src/backend/gen75_context.hpp
+++ b/backend/src/backend/gen75_context.hpp
@@ -32,9 +32,9 @@ namespace gbe
   class Gen75Context : public GenContext
   {
   public:
+    virtual ~Gen75Context(void) { }
     Gen75Context(const ir::Unit &unit, const std::string &name, uint32_t deviceID, bool relaxMath = false)
-            : GenContext(unit, name, deviceID, relaxMath) {
-    };
+            : GenContext(unit, name, deviceID, relaxMath) { }
 
   protected:
     virtual GenEncoder* generateEncoder(void) {
diff --git a/backend/src/backend/gen75_encoder.hpp b/backend/src/backend/gen75_encoder.hpp
index dc2dc769..a9042b32 100644
--- a/backend/src/backend/gen75_encoder.hpp
+++ b/backend/src/backend/gen75_encoder.hpp
@@ -31,8 +31,10 @@ namespace gbe
   class Gen75Encoder : public GenEncoder
   {
   public:
+    virtual ~Gen75Encoder(void) { }
+
     Gen75Encoder(uint32_t simdWidth, uint32_t gen, uint32_t deviceID)
-         : GenEncoder(simdWidth, gen, deviceID, 8) { };
+         : GenEncoder(simdWidth, gen, deviceID, 8) { }
 
     virtual void MOV_DF(GenRegister dest, GenRegister src0, GenRegister tmp = GenRegister::null());
     virtual void LOAD_DF_IMM(GenRegister dest, GenRegister tmp, double value);
diff --git a/backend/src/backend/gen_context.hpp b/backend/src/backend/gen_context.hpp
index 21ee28d8..750d72b2 100644
--- a/backend/src/backend/gen_context.hpp
+++ b/backend/src/backend/gen_context.hpp
@@ -63,7 +63,7 @@ namespace gbe
     GenContext(const ir::Unit &unit, const std::string &name, uint32_t deviceID,
                bool relaxMath = false);
     /*! Release everything needed */
-    ~GenContext(void);
+    virtual ~GenContext(void);
     /*! Start new code generation with specific parameters */
     void startNewCG(uint32_t simdWidth, uint32_t reservedSpillRegs, bool limitRegisterPressure);
     /*! Target device ID*/
diff --git a/backend/src/backend/gen_encoder.hpp b/backend/src/backend/gen_encoder.hpp
index 5129d997..9eaa1c29 100644
--- a/backend/src/backend/gen_encoder.hpp
+++ b/backend/src/backend/gen_encoder.hpp
@@ -66,6 +66,8 @@ namespace gbe
   public:
     /*! simdWidth is the default width for the instructions */
     GenEncoder(uint32_t simdWidth, uint32_t gen, uint32_t deviceID, int jump_width = 1);
+
+    virtual ~GenEncoder(void) { }
     /*! Size of the stack (should be large enough) */
     enum { MAX_STATE_NUM = 16 };
     /*! Push the current instruction state */