Replace "fallthrough" comments with LLVM_FALLTHROUGH

This is a mechanical change of comments in switches like fallthrough,
fall-through, or fall-thru to use the LLVM_FALLTHROUGH macro instead.

llvm-svn: 278902

6 files changed, 9 insertions, 8 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index a5c049e1b43..9aeaf2a97b1 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -1583,7 +1583,7 @@ bool MIParser::parseMachineOperand(MachineOperand &Dest,
       lex();
       break;
     }
-  // fallthrough
+    LLVM_FALLTHROUGH;
   default:
     // FIXME: Parse the MCSymbol machine operand.
     return error("expected a machine operand");
diff --git a/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp b/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp
index 69c48703301..83bc1ba7beb 100644
--- a/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp
+++ b/llvm/lib/CodeGen/ScoreboardHazardRecognizer.cpp
@@ -145,7 +145,7 @@ ScoreboardHazardRecognizer::getHazardType(SUnit *SU, int Stalls) {
       case InstrStage::Required:
         // Required FUs conflict with both reserved and required ones
         freeUnits &= ~ReservedScoreboard[StageCycle];
-        // FALLTHROUGH
+        LLVM_FALLTHROUGH;
       case InstrStage::Reserved:
         // Reserved FUs can conflict only with required ones.
         freeUnits &= ~RequiredScoreboard[StageCycle];
@@ -197,7 +197,7 @@ void ScoreboardHazardRecognizer::EmitInstruction(SUnit *SU) {
       case InstrStage::Required:
         // Required FUs conflict with both reserved and required ones
         freeUnits &= ~ReservedScoreboard[cycle + i];
-        // FALLTHROUGH
+        LLVM_FALLTHROUGH;
       case InstrStage::Reserved:
         // Reserved FUs can conflict only with required ones.
         freeUnits &= ~RequiredScoreboard[cycle + i];
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:
diff --git a/llvm/lib/CodeGen/TargetPassConfig.cpp b/llvm/lib/CodeGen/TargetPassConfig.cpp
index b8c820942cb..5b29273cfd0 100644
--- a/llvm/lib/CodeGen/TargetPassConfig.cpp
+++ b/llvm/lib/CodeGen/TargetPassConfig.cpp
@@ -483,7 +483,7 @@ void TargetPassConfig::addPassesToHandleExceptions() {
     // pad is shared by multiple invokes and is also a target of a normal
     // edge from elsewhere.
     addPass(createSjLjEHPreparePass());
-    // FALLTHROUGH
+    LLVM_FALLTHROUGH;
   case ExceptionHandling::DwarfCFI:
   case ExceptionHandling::ARM:
     addPass(createDwarfEHPass(TM));