Fix crash if specialization constant is not specialized by API call

Change-Id: Ifd9dd78c4f1fb9a589be8cce078dc1294b2e7b50

Author: aratajew

IGC/AdaptorOCL/SPIRV/SPIRVReader.cpp

@@ -2174,7 +2174,8 @@ SPIRVToLLVM::transValueWithoutDecoration(SPIRVValue *BV, Function *F,
     if(BV->hasDecorate(DecorationSpecId)) {
       IGC_ASSERT_EXIT(OC == OpSpecConstant && "Only SpecConstants can be specialized!");
       SPIRVWord specid = *BV->getDecorate(DecorationSpecId).begin();
-      V = BM->getSpecConstant(specid);
+      if(BM->isSpecConstantSpecialized(specid))
+        V = BM->getSpecConstant(specid);
     }
     switch(BT->getOpCode()) {
     case OpTypeBool:

IGC/AdaptorOCL/SPIRV/libSPIRV/SPIRVModule.cpp

@@ -116,14 +116,14 @@ class SPIRVModuleImpl : public SPIRVModule {
   SPIRVAddressingModelKind getAddressingModel() override { return AddrModel;}
   SPIRVExtInstSetKind getBuiltinSet(SPIRVId SetId) const override;
   const SPIRVCapSet &getCapability() const override { return CapSet;}
-  bool isSpecConstant(SPIRVWord spec_id) const override {
+  bool isSpecConstantSpecialized(SPIRVWord spec_id) const override {
     if(SCMap)
       return SCMap->find(spec_id) != SCMap->end();
     else
       return false;
   }
   uint64_t getSpecConstant(SPIRVWord spec_id) override {
-    IGC_ASSERT_EXIT(isSpecConstant(spec_id) && "Specialization constant was not specialized!");
+    IGC_ASSERT_EXIT(isSpecConstantSpecialized(spec_id) && "Specialization constant was not specialized!");
     return SCMap->at(spec_id);
   }
   void setSpecConstantMap(SPIRVSpecConstantMap *specConstants) override { SCMap = specConstants; }

IGC/AdaptorOCL/SPIRV/libSPIRV/SPIRVModule.h

@@ -146,7 +146,7 @@ class SPIRVModule
   virtual SPIRVAddressingModelKind getAddressingModel() = 0;
   virtual const SPIRVCapSet &getCapability() const = 0;
   virtual SPIRVExtInstSetKind getBuiltinSet(SPIRVId) const = 0;
-  virtual bool isSpecConstant(SPIRVWord) const = 0;
+  virtual bool isSpecConstantSpecialized(SPIRVWord) const = 0;
   virtual uint64_t getSpecConstant(SPIRVWord) = 0;
   virtual void setSpecConstantMap(SPIRVSpecConstantMap *) = 0;
   virtual SPIRVFunction *getEntryPoint(SPIRVExecutionModelKind, unsigned) const = 0;