3 files changed, 5 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 87fb80cea23..e6d80caaaa5 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -801,7 +801,7 @@ void SelectionDAGLegalize::LegalizeLoadOps(SDNode *Node) {
     default: llvm_unreachable("This action is not supported yet!");
     case TargetLowering::Custom:
       isCustom = true;
-      // FALLTHROUGH
+      LLVM_FALLTHROUGH;
     case TargetLowering::Legal: {
       Value = SDValue(Node, 0);
       Chain = SDValue(Node, 1);
@@ -1598,6 +1598,7 @@ bool SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, SDValue &LHS,
           break;
         }
         // Fallthrough if we are unsigned integer.
+        LLVM_FALLTHROUGH;
     case ISD::SETLE:
     case ISD::SETGT:
     case ISD::SETGE:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
index 020dac367b4..4d776f522af 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -1776,7 +1776,7 @@ void DAGTypeLegalizer::ExpandIntRes_ADDSUB(SDNode *N,
     switch (BoolType) {
     case TargetLoweringBase::UndefinedBooleanContent:
       OVF = DAG.getNode(ISD::AND, dl, NVT, DAG.getConstant(1, dl, NVT), OVF);
-      // Fallthrough
+      LLVM_FALLTHROUGH;
     case TargetLoweringBase::ZeroOrOneBooleanContent:
       Hi = DAG.getNode(N->getOpcode(), dl, NVT, Hi, OVF);
       break;
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 9c06a614219..3b2e592713e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2481,7 +2481,7 @@ void SelectionDAG::computeKnownBits(SDValue Op, APInt &KnownZero,
   default:
     if (Op.getOpcode() < ISD::BUILTIN_OP_END)
       break;
-    // Fallthrough
+    LLVM_FALLTHROUGH;
   case ISD::INTRINSIC_WO_CHAIN:
   case ISD::INTRINSIC_W_CHAIN:
   case ISD::INTRINSIC_VOID:
@@ -3868,7 +3868,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
         // Handle undef ^ undef -> 0 special case. This is a common
         // idiom (misuse).
         return getConstant(0, DL, VT);
-      // fallthrough
+      LLVM_FALLTHROUGH;
     case ISD::ADD:
     case ISD::ADDC:
     case ISD::ADDE: