Delete gtCompareTree

Unused.

src/coreclr/jit/compiler.h

@@ -3418,8 +3418,6 @@ class Compiler
     // before they have been set.)
     bool gtComplexityExceeds(GenTree** tree, unsigned limit);
 
-    bool gtCompareTree(GenTree* op1, GenTree* op2);
-
     GenTree* gtReverseCond(GenTree* tree);
 
     bool gtHasRef(GenTree* tree, ssize_t lclNum, bool defOnly);

src/coreclr/jit/gentree.cpp

@@ -8631,83 +8631,6 @@ Compiler::fgWalkResult Compiler::fgUpdateSideEffectsPost(GenTree** pTree, fgWalk
     return WALK_CONTINUE;
 }
 
-/*****************************************************************************
- *
- *  Compares two trees and returns true when both trees are the same.
- *  Instead of fully comparing the two trees this method can just return false.
- *  Thus callers should not assume that the trees are different when false is returned.
- *  Only when true is returned can the caller perform code optimizations.
- *  The current implementation only compares a limited set of LEAF/CONST node
- *  and returns false for all othere trees.
- */
-bool Compiler::gtCompareTree(GenTree* op1, GenTree* op2)
-{
-    /* Make sure that both trees are of the same GT node kind */
-    if (op1->OperGet() != op2->OperGet())
-    {
-        return false;
-    }
-
-    /* Make sure that both trees are returning the same type */
-    if (op1->gtType != op2->gtType)
-    {
-        return false;
-    }
-
-    /* Figure out what kind of a node we have */
-
-    genTreeOps oper = op1->OperGet();
-    unsigned   kind = op1->OperKind();
-
-    /* Is this a constant or leaf node? */
-
-    if (kind & (GTK_CONST | GTK_LEAF))
-    {
-        switch (oper)
-        {
-            case GT_CNS_INT:
-                if ((op1->AsIntCon()->gtIconVal == op2->AsIntCon()->gtIconVal) && GenTree::SameIconHandleFlag(op1, op2))
-                {
-                    return true;
-                }
-                break;
-
-            case GT_CNS_LNG:
-                if (op1->AsLngCon()->gtLconVal == op2->AsLngCon()->gtLconVal)
-                {
-                    return true;
-                }
-                break;
-
-            case GT_CNS_STR:
-                if (op1->AsStrCon()->gtSconCPX == op2->AsStrCon()->gtSconCPX)
-                {
-                    return true;
-                }
-                break;
-
-            case GT_LCL_VAR:
-                if (op1->AsLclVarCommon()->GetLclNum() == op2->AsLclVarCommon()->GetLclNum())
-                {
-                    return true;
-                }
-                break;
-
-            case GT_CLS_VAR:
-                if (op1->AsClsVar()->gtClsVarHnd == op2->AsClsVar()->gtClsVarHnd)
-                {
-                    return true;
-                }
-                break;
-
-            default:
-                // we return false for these unhandled 'oper' kinds
-                break;
-        }
-    }
-    return false;
-}
-
 //------------------------------------------------------------------------
 // gtGetThisArg: Return this pointer node for the call.
 //