do not serialize zero image/sampler info into binary

if there is no image/sampler used in kernel source, it is not
necessary to serialize the zero image/sampler info into kernel binary.

Signed-off-by: Guo Yejun <yejun.guo@intel.com>
Signed-off-by: Zhigang Gong <zhigang.gong@intel.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/backend/src/ir/image.hpp b/backend/src/ir/image.hpp
index cf388d42..a79e0a34 100644
--- a/backend/src/ir/image.hpp
+++ b/backend/src/ir/image.hpp
@@ -61,6 +61,9 @@ namespace ir {
     void operator = (const ImageSet& other) {
       regMap.insert(other.regMap.begin(), other.regMap.end());
     }
+
+    bool empty() const { return regMap.empty(); }
+
     ImageSet(const ImageSet& other) : regMap(other.regMap.begin(), other.regMap.end()) { }
     ImageSet() {}
     ~ImageSet();
diff --git a/backend/src/ir/sampler.hpp b/backend/src/ir/sampler.hpp
index dd1f3b61..2b51ce38 100644
--- a/backend/src/ir/sampler.hpp
+++ b/backend/src/ir/sampler.hpp
@@ -56,6 +56,8 @@ namespace ir {
       samplerMap.insert(other.samplerMap.begin(), other.samplerMap.end());
     }
 
+    bool empty() const { return samplerMap.empty(); }
+
     SamplerSet(const SamplerSet& other) : samplerMap(other.samplerMap.begin(), other.samplerMap.end()) { }
     SamplerSet() {}