[Hexagon] Fix some more -Wimplicit-fallthrough warnings. NFCI.

llvm-svn: 307395

4 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/Hexagon/AsmParser/HexagonAsmParser.cpp b/llvm/lib/Target/Hexagon/AsmParser/HexagonAsmParser.cpp
index c19e636d79c..d901abbd169 100644
--- a/llvm/lib/Target/Hexagon/AsmParser/HexagonAsmParser.cpp
+++ b/llvm/lib/Target/Hexagon/AsmParser/HexagonAsmParser.cpp
@@ -1413,6 +1413,7 @@ int HexagonAsmParser::processInstruction(MCInst &Inst,
   // Translate a "$Rx =  CONST32(#imm)" to "$Rx = memw(gp+#LABEL) "
   case Hexagon::CONST32:
     is32bit = true;
+    LLVM_FALLTHROUGH;
   // Translate a "$Rx:y =  CONST64(#imm)" to "$Rx:y = memd(gp+#LABEL) "
   case Hexagon::CONST64:
     // FIXME: need better way to detect AsmStreamer (upstream removed getKind())
diff --git a/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp b/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp
index 14c682c6df4..b064778c4bb 100644
--- a/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonBitSimplify.cpp
@@ -1947,8 +1947,10 @@ bool BitSimplification::genStoreImmediate(MachineInstr *MI) {
   switch (Opc) {
     case Hexagon::S2_storeri_io:
       Align++;
+      LLVM_FALLTHROUGH;
     case Hexagon::S2_storerh_io:
       Align++;
+      LLVM_FALLTHROUGH;
     case Hexagon::S2_storerb_io:
       break;
     default:
diff --git a/llvm/lib/Target/Hexagon/HexagonBitTracker.cpp b/llvm/lib/Target/Hexagon/HexagonBitTracker.cpp
index 730026121d3..3de53108824 100644
--- a/llvm/lib/Target/Hexagon/HexagonBitTracker.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonBitTracker.cpp
@@ -937,6 +937,7 @@ bool HexagonEvaluator::evaluate(const MachineInstr &BI,
     case Hexagon::J2_jumpfnew:
     case Hexagon::J2_jumpfnewpt:
       Negated = true;
+      LLVM_FALLTHROUGH;
     case Hexagon::J2_jumpt:
     case Hexagon::J2_jumptpt:
     case Hexagon::J2_jumptnew:
diff --git a/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp b/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
index db268b78cd7..4fa929a2081 100644
--- a/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
@@ -350,6 +350,8 @@ int32_t HexagonSplitDoubleRegs::profit(const MachineInstr *MI) const {
                        MI->getOperand(2).getImm());
     case Hexagon::A4_combineri:
       ImmX++;
+      // Fall through into A4_combineir.
+      LLVM_FALLTHROUGH;
     case Hexagon::A4_combineir: {
       ImmX++;
       int64_t V = MI->getOperand(ImmX).getImm();