Remove deadcode, init members

Default initialize small std::arrays to zero-values in BuildIR.h.
Remove dead code from FlowGraph.cpp.

Author: fda0

visa/BuildIR.h

@@ -281,8 +281,8 @@ class IR_Builder {
     };
     static const int MAX_POOL_SIZE =
         8; // reg pressure control, for now just do naive first-come first-serve
-    std::array<ImmVal, MAX_POOL_SIZE> immArray;
-    std::array<G4_Declare *, MAX_POOL_SIZE> dclArray;
+    std::array<ImmVal, MAX_POOL_SIZE> immArray = {};
+    std::array<G4_Declare *, MAX_POOL_SIZE> dclArray = {};
     int curSize = 0;
     IR_Builder &builder;
 

visa/FlowGraph.cpp

@@ -582,10 +582,6 @@ void FlowGraph::normalizeFlowGraph() {
   for (BB_LIST_ITER it = BBs.begin(); it != BBs.end(); it++) {
     G4_BB *bb = *it;
 
-    if (bb->getBBType() & G4_BB_INIT_TYPE) {
-      bb->getFuncInfo();
-    }
-
     if (bb->isEndWithFCall()) {
       G4_BB *retBB = bb->Succs.front();
       if (retBB->Preds.size() > 1) {