Restrict code in WorkaroundAnalysis::visitCallInst() to bound resources only.

Change-Id: I1bd134b21a210005e86fe54b548ae5f3fef1fc2f

Author: mmerecki

IGC/Compiler/WorkaroundAnalysisPass.cpp

@@ -63,6 +63,8 @@ IGC_INITIALIZE_PASS_END(WorkaroundAnalysis, PASS_FLAG, PASS_DESCRIPTION, PASS_CF
 
 char WorkaroundAnalysis::ID = 0;
 
+// Returns BTI of the texture when resource is not dynamically indexed and when
+// resource is not bindless.
 int GetSampleCResourceIdx(llvm::CallInst& I)
 {
     int textLocation = -1;
@@ -75,8 +77,11 @@ int GetSampleCResourceIdx(llvm::CallInst& I)
             uint as = pArgLocation->getType()->getPointerAddressSpace();
             uint bufferIndex;
             bool directIdx;
-            DecodeAS4GFXResource(as, directIdx, bufferIndex);
-            return bufferIndex;
+            const BufferType resourceType = DecodeAS4GFXResource(as, directIdx, bufferIndex);
+            if (resourceType == RESOURCE && directIdx)
+            {
+                return bufferIndex;
+            }
         }
     }
     return textLocation;
@@ -279,6 +284,8 @@ void WorkaroundAnalysis::visitCallInst(llvm::CallInst& I)
             uint bufferIndex = GetSampleCResourceIdx(I);
             if (bufferIndex == -1) break;
 
+            assert(bufferIndex < 256);
+
             if (pCodeGenCtx->type == ShaderType::PIXEL_SHADER)
             {
                 PixelShaderContext* pShaderCtx = static_cast <PixelShaderContext*>(pCodeGenCtx);