From 799659491070f7ca56e59f1e260765d92b866574 Mon Sep 17 00:00:00 2001
From: Mike Danes <onemihaid@hotmail.com>
Date: Sat, 7 Oct 2017 20:17:19 +0300
Subject: [PATCH] Removed unused opers and code

* GT_DIV_HI and GT_MOD_HI are not used anywhere
* genCodeForBinary doesn't handle GT_MUL_LONG
* OperIsHigh is not used anywhere
---
 src/jit/codegenxarch.cpp   |  3 +--
 src/jit/decomposelongs.cpp |  6 ------
 src/jit/gentree.h          | 21 ---------------------
 src/jit/gtlist.h           |  2 --
 4 files changed, 1 insertion(+), 31 deletions(-)

diff --git a/src/jit/codegenxarch.cpp b/src/jit/codegenxarch.cpp
index bbac381..10d640b 100644
--- a/src/jit/codegenxarch.cpp
+++ b/src/jit/codegenxarch.cpp
@@ -808,8 +808,7 @@ void CodeGen::genCodeForBinary(GenTree* treeNode)
     assert(oper == GT_OR || oper == GT_XOR || oper == GT_AND || oper == GT_ADD || oper == GT_SUB);
 #else  // !defined(_TARGET_64BIT_)
     assert(oper == GT_OR || oper == GT_XOR || oper == GT_AND || oper == GT_ADD_LO || oper == GT_ADD_HI ||
-           oper == GT_SUB_LO || oper == GT_SUB_HI || oper == GT_MUL_LONG || oper == GT_DIV_HI || oper == GT_MOD_HI ||
-           oper == GT_ADD || oper == GT_SUB);
+           oper == GT_SUB_LO || oper == GT_SUB_HI || oper == GT_ADD || oper == GT_SUB);
 #endif // !defined(_TARGET_64BIT_)
 
     GenTreePtr op1 = treeNode->gtGetOp1();
diff --git a/src/jit/decomposelongs.cpp b/src/jit/decomposelongs.cpp
index 174bba2..1a78533 100644
--- a/src/jit/decomposelongs.cpp
+++ b/src/jit/decomposelongs.cpp
@@ -1980,12 +1980,6 @@ genTreeOps DecomposeLongs::GetHiOper(genTreeOps oper)
         case GT_SUB:
             return GT_SUB_HI;
             break;
-        case GT_DIV:
-            return GT_DIV_HI;
-            break;
-        case GT_MOD:
-            return GT_MOD_HI;
-            break;
         case GT_OR:
             return GT_OR;
             break;
diff --git a/src/jit/gentree.h b/src/jit/gentree.h
index 77976f0..3912763 100644
--- a/src/jit/gentree.h
+++ b/src/jit/gentree.h
@@ -1454,27 +1454,6 @@ public:
     }
 #endif // _TARGET_XARCH_
 
-#if !defined(LEGACY_BACKEND) && !defined(_TARGET_64BIT_)
-    static bool OperIsHigh(genTreeOps gtOper)
-    {
-        switch (gtOper)
-        {
-            case GT_ADD_HI:
-            case GT_SUB_HI:
-            case GT_DIV_HI:
-            case GT_MOD_HI:
-                return true;
-            default:
-                return false;
-        }
-    }
-
-    bool OperIsHigh() const
-    {
-        return OperIsHigh(OperGet());
-    }
-#endif // !defined(LEGACY_BACKEND) && !defined(_TARGET_64BIT_)
-
     static bool OperIsUnary(genTreeOps gtOper)
     {
         return (OperKind(gtOper) & GTK_UNOP) != 0;
diff --git a/src/jit/gtlist.h b/src/jit/gtlist.h
index 9ba21a3..6ca636d 100644
--- a/src/jit/gtlist.h
+++ b/src/jit/gtlist.h
@@ -192,8 +192,6 @@ GTNODE(ADD_LO           , GenTreeOp          ,1,GTK_BINOP)
 GTNODE(ADD_HI           , GenTreeOp          ,1,GTK_BINOP)
 GTNODE(SUB_LO           , GenTreeOp          ,0,GTK_BINOP)
 GTNODE(SUB_HI           , GenTreeOp          ,0,GTK_BINOP)
-GTNODE(DIV_HI           , GenTreeOp          ,0,GTK_BINOP)
-GTNODE(MOD_HI           , GenTreeOp          ,0,GTK_BINOP)
 
 // A mul that returns the 2N bit result of an NxN multiply. This op is used for
 // multiplies that take two ints and return a long result. All other multiplies
-- 
2.7.4