Returns weight information for each interesting Constant along with the instruction stats.

Change-Id: Id855800b1483e84fc75a03bc47d049d0c934b6e7

Author: jhananit

IGC/Compiler/CISACodeGen/AdvCodeMotion.cpp

@@ -273,16 +273,6 @@ static bool hasMemoryWrite(BasicBlock* BB) {
     return false;
 }
 
-static bool isDummyBasicBlock(BasicBlock* BB) {
-    if (BB->size() != 1)
-        return false;
-    if ((++pred_begin(BB)) != pred_end(BB))
-        return false;
-    if ((++succ_begin(BB)) != succ_end(BB))
-        return false;
-    return true;
-}
-
 static BasicBlock* getJointBasicBlock(PostDominatorTree* PDT, BasicBlock* BB,
     BasicBlock* IfBB) {
     if (isDummyBasicBlock(BB))

IGC/Compiler/CISACodeGen/helper.cpp

@@ -105,6 +105,17 @@ namespace IGC
         return temp.u32Val;
     }
 
+    bool isDummyBasicBlock(llvm::BasicBlock* BB)
+    {
+        if (BB->size() != 1)
+            return false;
+        if ((++pred_begin(BB)) != pred_end(BB))
+            return false;
+        if ((++succ_begin(BB)) != succ_end(BB))
+            return false;
+        return true;
+    }
+
     unsigned SetBufferAsBindless(unsigned addressSpaceOfPtr, BufferType bufferType)
     {
         GFXResourceAddrSpace temp = {};

IGC/Compiler/CISACodeGen/helper.h

@@ -184,6 +184,8 @@ namespace IGC
     BufferType DecodeAS4GFXResource(unsigned addrSpace, bool& directIdx, unsigned& bufId);
     int getConstantBufferLoadOffset(llvm::LoadInst* ld);
 
+    bool isDummyBasicBlock(llvm::BasicBlock* BB);
+
     bool IsDirectIdx(unsigned addrSpace);
     bool isNaNCheck(llvm::FCmpInst& FC);
 

IGC/Compiler/CodeGenPublic.h

@@ -255,6 +255,11 @@ namespace IGC
         ConstantAddress ca;
         bool anyValue;
         uint32_t value;
+        uint32_t instCount = 0;
+        uint32_t branchCount = 0;
+        uint32_t loopCount = 0;
+        uint32_t samplerCount = 0;
+        uint32_t weight = 0;
     };
 
     struct SKernelProgram