diff --git a/src/jit/codegencommon.cpp b/src/jit/codegencommon.cpp
index 0843dffef0c7..3ff5b6fe68df 100644
--- a/src/jit/codegencommon.cpp
+++ b/src/jit/codegencommon.cpp
@@ -11049,7 +11049,7 @@ void CodeGen::genVzeroupperIfNeeded(bool check256bitOnly /* = true*/)
 
     if (emitVzeroUpper)
     {
-        assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX);
+        assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX2);
         instGen(INS_vzeroupper);
     }
 #endif
diff --git a/src/jit/codegenxarch.cpp b/src/jit/codegenxarch.cpp
index 3f8eef286fc7..22914493b1f7 100644
--- a/src/jit/codegenxarch.cpp
+++ b/src/jit/codegenxarch.cpp
@@ -5316,7 +5316,7 @@ void CodeGen::genCallInstruction(GenTreeCall* call)
     // when there's preceding 256-bit AVX to legacy SSE transition penalty.
     if (call->IsPInvoke() && (call->gtCallType == CT_USER_FUNC) && getEmitter()->Contains256bitAVX())
     {
-        assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX);
+        assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX2);
         instGen(INS_vzeroupper);
     }
 #endif
diff --git a/src/jit/compiler.h b/src/jit/compiler.h
index 50e26a6d7b1c..18fab9b3df16 100644
--- a/src/jit/compiler.h
+++ b/src/jit/compiler.h
@@ -7251,7 +7251,7 @@ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
 #if defined(_TARGET_XARCH_) && !defined(LEGACY_BACKEND)
         if (canUseAVX())
         {
-            return InstructionSet_AVX;
+            return InstructionSet_AVX2;
         }
 
         if (CanUseSSE3_4())
diff --git a/src/jit/instr.h b/src/jit/instr.h
index 309a2f5dfeac..41ed560ef288 100644
--- a/src/jit/instr.h
+++ b/src/jit/instr.h
@@ -282,8 +282,7 @@ enum InstructionSet
 #ifdef _TARGET_XARCH_
     InstructionSet_SSE2,      // SSE2 Instruction set
     InstructionSet_SSE3_4,    // SSE3, SSSE3, SSE4.1 and SSE4.2 instruction set
-    InstructionSet_AVX,       // AVX2 instruction set
-                              // TODO-Cleaup - This should be named as InstructionSet_AVX2
+    InstructionSet_AVX2,       // AVX2 instruction set
 #elif defined(_TARGET_ARM_)
     InstructionSet_NEON,
 #endif
diff --git a/src/jit/lowerxarch.cpp b/src/jit/lowerxarch.cpp
index d568e52b2396..9fab7ef0f1e8 100644
--- a/src/jit/lowerxarch.cpp
+++ b/src/jit/lowerxarch.cpp
@@ -2241,7 +2241,7 @@ void Lowering::ContainCheckSIMD(GenTreeSIMD* simdNode)
             {
                 MakeSrcContained(simdNode, op1);
             }
-            else if ((comp->getSIMDInstructionSet() == InstructionSet_AVX) &&
+            else if ((comp->getSIMDInstructionSet() == InstructionSet_AVX2) &&
                      ((simdNode->gtSIMDSize == 16) || (simdNode->gtSIMDSize == 32)))
             {
                 // Either op1 is a float or dbl constant or an addr
diff --git a/src/jit/lsraxarch.cpp b/src/jit/lsraxarch.cpp
index 4945db32b4cf..18825768cd5e 100644
--- a/src/jit/lsraxarch.cpp
+++ b/src/jit/lsraxarch.cpp
@@ -2261,7 +2261,7 @@ void LinearScan::TreeNodeInfoInitSIMD(GenTreeSIMD* simdTree)
                 {
                     bool needFloatTemp;
                     if (varTypeIsSmallInt(simdTree->gtSIMDBaseType) &&
-                        (compiler->getSIMDInstructionSet() == InstructionSet_AVX))
+                        (compiler->getSIMDInstructionSet() == InstructionSet_AVX2))
                     {
                         int byteShiftCnt = (int)op2->AsIntCon()->gtIconVal * genTypeSize(simdTree->gtSIMDBaseType);
                         needFloatTemp    = (byteShiftCnt >= 16);
@@ -2335,7 +2335,7 @@ void LinearScan::TreeNodeInfoInitSIMD(GenTreeSIMD* simdTree)
             info->isInternalRegDelayFree = true;
             info->srcCount               = 1;
             info->internalIntCount       = 1;
-            if (compiler->getSIMDInstructionSet() == InstructionSet_AVX)
+            if (compiler->getSIMDInstructionSet() == InstructionSet_AVX2)
             {
                 info->internalFloatCount = 2;
             }
@@ -2358,7 +2358,7 @@ void LinearScan::TreeNodeInfoInitSIMD(GenTreeSIMD* simdTree)
             }
             else
 #endif
-                if ((compiler->getSIMDInstructionSet() == InstructionSet_AVX) ||
+                if ((compiler->getSIMDInstructionSet() == InstructionSet_AVX2) ||
                     (simdTree->gtSIMDBaseType == TYP_ULONG))
             {
                 info->internalFloatCount = 2;
@@ -2374,7 +2374,7 @@ void LinearScan::TreeNodeInfoInitSIMD(GenTreeSIMD* simdTree)
             // We need an internal register different from targetReg.
             info->isInternalRegDelayFree = true;
             info->srcCount               = 2;
-            if ((compiler->getSIMDInstructionSet() == InstructionSet_AVX) && (simdTree->gtSIMDBaseType != TYP_DOUBLE))
+            if ((compiler->getSIMDInstructionSet() == InstructionSet_AVX2) && (simdTree->gtSIMDBaseType != TYP_DOUBLE))
             {
                 info->internalFloatCount = 2;
             }
@@ -2783,11 +2783,11 @@ void LinearScan::SetContainsAVXFlags(bool isFloatingPointType /* = true */, unsi
 #ifdef FEATURE_AVX_SUPPORT
     if (isFloatingPointType)
     {
-        if (compiler->getFloatingPointInstructionSet() == InstructionSet_AVX)
+        if (compiler->getFloatingPointInstructionSet() == InstructionSet_AVX2)
         {
             compiler->getEmitter()->SetContainsAVX(true);
         }
-        if (sizeOfSIMDVector == 32 && compiler->getSIMDInstructionSet() == InstructionSet_AVX)
+        if (sizeOfSIMDVector == 32 && compiler->getSIMDInstructionSet() == InstructionSet_AVX2)
         {
             compiler->getEmitter()->SetContains256bitAVX(true);
         }
diff --git a/src/jit/simdcodegenxarch.cpp b/src/jit/simdcodegenxarch.cpp
index ef50aaecc0c5..72c484e9fa40 100644
--- a/src/jit/simdcodegenxarch.cpp
+++ b/src/jit/simdcodegenxarch.cpp
@@ -672,7 +672,7 @@ void CodeGen::genSIMDScalarMove(
 {
     assert(varTypeIsFloating(baseType));
 #ifdef FEATURE_AVX_SUPPORT
-    if (compiler->getSIMDInstructionSet() == InstructionSet_AVX)
+    if (compiler->getSIMDInstructionSet() == InstructionSet_AVX2)
     {
         switch (moveType)
         {
@@ -874,7 +874,7 @@ void CodeGen::genSIMDIntrinsicInit(GenTreeSIMD* simdNode)
 #ifdef FEATURE_AVX_SUPPORT
         else
         {
-            assert(iset == InstructionSet_AVX);
+            assert(iset == InstructionSet_AVX2);
             ins = getOpForSIMDIntrinsic(SIMDIntrinsicInit, baseType);
             if (op1->IsCnsFltOrDbl())
             {
@@ -893,7 +893,7 @@ void CodeGen::genSIMDIntrinsicInit(GenTreeSIMD* simdNode)
         }
 #endif // FEATURE_AVX_SUPPORT
     }
-    else if (iset == InstructionSet_AVX && ((size == 32) || (size == 16)))
+    else if (iset == InstructionSet_AVX2 && ((size == 32) || (size == 16)))
     {
         regNumber srcReg = genConsumeReg(op1);
         if (baseType == TYP_INT || baseType == TYP_UINT || baseType == TYP_LONG || baseType == TYP_ULONG)
@@ -1145,7 +1145,7 @@ void CodeGen::genSIMDIntrinsic32BitConvert(GenTreeSIMD* simdNode)
         getEmitter()->emitIns_R_I(INS_mov, EA_8BYTE, tmpIntReg, (ssize_t)0X5300000053000000);
         inst_RV_RV(INS_mov_i2xmm, tmpReg, tmpIntReg, TYP_ULONG);
 #else
-        if (compiler->getSIMDInstructionSet() == InstructionSet_AVX)
+        if (compiler->getSIMDInstructionSet() == InstructionSet_AVX2)
         {
             getEmitter()->emitIns_R_I(INS_mov, EA_4BYTE, tmpIntReg, (ssize_t)0X53000000);
             inst_RV_RV(INS_mov_i2xmm, tmpReg, tmpIntReg, TYP_UINT);
@@ -1158,7 +1158,7 @@ void CodeGen::genSIMDIntrinsic32BitConvert(GenTreeSIMD* simdNode)
             getEmitter()->emitIns_R_R_I(INS_pinsrw, emitTypeSize(TYP_INT), tmpReg, tmpIntReg, 3);
         }
 #endif
-        if (compiler->getSIMDInstructionSet() == InstructionSet_AVX)
+        if (compiler->getSIMDInstructionSet() == InstructionSet_AVX2)
         {
             inst_RV_RV(INS_vpbroadcastd, tmpReg, tmpReg, targetType, emitActualTypeSize(targetType));
         }
@@ -1257,7 +1257,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
     }
     else
 #endif
-        if (iset == InstructionSet_AVX || (baseType == TYP_ULONG))
+        if (iset == InstructionSet_AVX2 || (baseType == TYP_ULONG))
     {
         tmpReg  = simdNode->ExtractTempReg(RBM_ALLFLOAT);
         tmpReg2 = simdNode->GetSingleTempReg(RBM_ALLFLOAT);
@@ -1313,7 +1313,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         inst_RV_RV(INS_mov_i2xmm, tmpReg, tmpIntReg, TYP_UINT);
         getEmitter()->emitIns_R_I(INS_pslldq, EA_16BYTE, tmpReg, 4);
 #endif
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             inst_RV_RV(INS_vpbroadcastq, tmpReg, tmpReg, simdType, emitActualTypeSize(simdType));
         }
@@ -1335,7 +1335,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         inst_RV_RV(INS_mov_i2xmm, tmpReg, tmpIntReg, TYP_UINT);
         getEmitter()->emitIns_R_I(INS_pslldq, EA_16BYTE, tmpReg, 4);
 #endif
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             inst_RV_RV(INS_vpbroadcastq, tmpReg, tmpReg, simdType, emitActualTypeSize(simdType));
         }
@@ -1357,7 +1357,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         instruction rightShiftIns = getOpForSIMDIntrinsic(SIMDIntrinsicShiftRightInternal, TYP_SIMD16);
         instruction leftShiftIns  = getOpForSIMDIntrinsic(SIMDIntrinsicShiftLeftInternal, TYP_SIMD16);
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             // Extract the high 16-bits
             getEmitter()->emitIns_R_R_I(INS_vextracti128, EA_32BYTE, tmpReg, op1Reg, 0x01);
@@ -1395,7 +1395,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
             inst_RV_RV(INS_movaps, targetReg, tmpReg, simdType, emitActualTypeSize(simdType));
         }
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             getEmitter()->emitIns_R_R_I(INS_vinsertf128, EA_32BYTE, targetReg, tmpReg2, 0x01);
         }
@@ -1425,7 +1425,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         inst_RV_RV(INS_mov_i2xmm, tmpReg, tmpIntReg, TYP_UINT);
         getEmitter()->emitIns_R_I(INS_pslldq, EA_16BYTE, tmpReg, 4);
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             inst_RV_RV(INS_vpbroadcastq, tmpReg, tmpReg, simdType, emitActualTypeSize(simdType));
         }
@@ -1443,7 +1443,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         inst_RV_RV(INS_mov_i2xmm, tmpReg, tmpIntReg, TYP_UINT);
         getEmitter()->emitIns_R_I(INS_pslldq, EA_16BYTE, tmpReg, 4);
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             inst_RV_RV(INS_vpbroadcastq, tmpReg, tmpReg, simdType, emitActualTypeSize(simdType));
         }
@@ -1468,7 +1468,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         instruction rightShiftIns = getOpForSIMDIntrinsic(SIMDIntrinsicShiftRightInternal, TYP_SIMD16);
         instruction leftShiftIns  = getOpForSIMDIntrinsic(SIMDIntrinsicShiftLeftInternal, TYP_SIMD16);
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             // Extract the high 16-bits
             getEmitter()->emitIns_R_R_I(INS_vextractf128, EA_32BYTE, tmpReg, op1Reg, 0x01);
@@ -1504,7 +1504,7 @@ void CodeGen::genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode)
         // Merge or copy the results (only at this point are we done with op1Reg).
         assert(tmpReg != targetReg);
         inst_RV_RV(INS_por, targetReg, tmpReg, simdType, emitActualTypeSize(simdType));
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             getEmitter()->emitIns_R_R_I(INS_vinserti128, EA_32BYTE, targetReg, tmpReg2, 0x01);
         }
@@ -1526,7 +1526,7 @@ void CodeGen::genSIMDExtractUpperHalf(GenTreeSIMD* simdNode, regNumber srcReg, r
 {
     var_types simdType = simdNode->TypeGet();
     emitAttr  emitSize = emitActualTypeSize(simdType);
-    if (compiler->getSIMDInstructionSet() == InstructionSet_AVX)
+    if (compiler->getSIMDInstructionSet() == InstructionSet_AVX2)
     {
         instruction extractIns = varTypeIsFloating(simdNode->gtSIMDBaseType) ? INS_vextractf128 : INS_vextracti128;
         getEmitter()->emitIns_R_R_I(extractIns, EA_32BYTE, tgtReg, srcReg, 0x01);
@@ -1588,7 +1588,7 @@ void CodeGen::genSIMDIntrinsicWiden(GenTreeSIMD* simdNode)
         regNumber tmpReg = simdNode->GetSingleTempReg(RBM_ALLFLOAT);
         assert(tmpReg != op1Reg);
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             // permute op1Reg and put it into targetReg
             unsigned ival = 0xd4;
@@ -1658,7 +1658,7 @@ void CodeGen::genSIMDIntrinsicNarrow(GenTreeSIMD* simdNode)
     }
     else if (varTypeIsLong(baseType))
     {
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             // We have 8 long elements, 0-3 in op1Reg, 4-7 in op2Reg.
             // We will generate the following:
@@ -1720,7 +1720,7 @@ void CodeGen::genSIMDIntrinsicNarrow(GenTreeSIMD* simdNode)
         instruction shiftLeftIns  = getOpForSIMDIntrinsic(SIMDIntrinsicShiftLeftInternal, baseType);
         instruction shiftRightIns = getOpForSIMDIntrinsic(SIMDIntrinsicShiftRightInternal, baseType);
 
-        if (iset == InstructionSet_AVX)
+        if (iset == InstructionSet_AVX2)
         {
             regNumber tmpReg  = simdNode->ExtractTempReg(RBM_ALLFLOAT);
             regNumber tmpReg2 = simdNode->GetSingleTempReg(RBM_ALLFLOAT);
@@ -2414,7 +2414,7 @@ void CodeGen::genSIMDIntrinsicDotProduct(GenTreeSIMD* simdNode)
 #endif
 
             // tmpReg1 = op1 * op2
-            if (iset == InstructionSet_AVX)
+            if (iset == InstructionSet_AVX2)
             {
                 // On AVX take advantage 3 operand form of pmulld
                 inst_RV_RV_RV(INS_pmulld, tmpReg1, op1Reg, op2Reg, emitTypeSize(simdEvalType));
@@ -2611,7 +2611,7 @@ void CodeGen::genSIMDIntrinsicGetItem(GenTreeSIMD* simdNode)
 
     if (byteShiftCnt >= 16)
     {
-        assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX);
+        assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX2);
         byteShiftCnt -= 16;
         regNumber newSrcReg;
         if (varTypeIsFloating(baseType))
@@ -2671,7 +2671,7 @@ void CodeGen::genSIMDIntrinsicGetItem(GenTreeSIMD* simdNode)
             // low 3 bits of index, but it's better to use the right value.
             if (index > 8)
             {
-                assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX);
+                assert(compiler->getSIMDInstructionSet() == InstructionSet_AVX2);
                 index -= 8;
             }