From 22ce24ec7f1ea042c56a6531489def81c6fd7b02 Mon Sep 17 00:00:00 2001
From: Sergey Andreenko <seandree@microsoft.com>
Date: Thu, 29 Mar 2018 17:11:02 -0700
Subject: [PATCH] add an additional assert for the future

---
 src/jit/codegenarm.cpp | 6 ++++++
 src/jit/emitarm.cpp    | 3 +++
 src/jit/lower.cpp      | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/src/jit/codegenarm.cpp b/src/jit/codegenarm.cpp
index 60f11fb..639d259 100644
--- a/src/jit/codegenarm.cpp
+++ b/src/jit/codegenarm.cpp
@@ -627,9 +627,11 @@ instruction CodeGen::genGetInsForOper(genTreeOps oper, var_types type)
         case GT_MUL:
             ins = INS_MUL;
             break;
+#if !defined(USE_HELPERS_FOR_INT_DIV)
         case GT_DIV:
             ins = INS_sdiv;
             break;
+#endif // !USE_HELPERS_FOR_INT_DIV
         case GT_LSH:
             ins = INS_SHIFT_LEFT_LOGICAL;
             break;
@@ -1090,6 +1092,10 @@ void CodeGen::genCodeForDivMod(GenTreeOp* tree)
     // on float/double args.
     noway_assert(tree->OperIs(GT_DIV) || !varTypeIsFloating(tree));
 
+#if defined(USE_HELPERS_FOR_INT_DIV)
+    noway_assert(!varTypeIsIntOrI(tree));
+#endif // USE_HELPERS_FOR_INT_DIV
+
     var_types targetType = tree->TypeGet();
     regNumber targetReg  = tree->gtRegNum;
     emitter*  emit       = getEmitter();
diff --git a/src/jit/emitarm.cpp b/src/jit/emitarm.cpp
index ca5575a..db6dbdd 100644
--- a/src/jit/emitarm.cpp
+++ b/src/jit/emitarm.cpp
@@ -2985,8 +2985,11 @@ void emitter::emitIns_R_R_R(instruction ins,
             }
             __fallthrough;
 
+#if !defined(USE_HELPERS_FOR_INT_DIV)
         case INS_sdiv:
         case INS_udiv:
+#endif // !USE_HELPERS_FOR_INT_DIV
+
             assert(insDoesNotSetFlags(flags));
             fmt = IF_T2_C5;
             sf  = INS_FLAGS_NOT_SET;
diff --git a/src/jit/lower.cpp b/src/jit/lower.cpp
index d7fcee6..ba5b1a0 100644
--- a/src/jit/lower.cpp
+++ b/src/jit/lower.cpp
@@ -4719,6 +4719,10 @@ GenTree* Lowering::LowerConstIntDivOrMod(GenTree* node)
     const var_types type = divMod->TypeGet();
     assert((type == TYP_INT) || (type == TYP_LONG));
 
+#if defined(USE_HELPERS_FOR_INT_DIV)
+    unreached();
+#endif // USE_HELPERS_FOR_INT_DIV
+
     if (dividend->IsCnsIntOrI())
     {
         // We shouldn't see a divmod with constant operands here but if we do then it's likely
-- 
2.7.4