Micro-opt: Only emit compact unwind if there is a compact unwind encoding to emit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135452 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index ba3bda0bc9a561fb0e8b62f338e7799ba0becfe5..744d01623cfbcb2bae2c0431b50307e00fbe06c5 100644 (file)
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -1022,7 +1022,7 @@ void MCDwarfFrameEmitter::Emit(MCStreamer &Streamer,
   const MCSymbol *DummyDebugKey = NULL;
   for (unsigned i = 0, n = Streamer.getNumFrameInfos(); i < n; ++i) {
     const MCDwarfFrameInfo &Frame = Streamer.getFrameInfo(i);
-    if (IsEH && TAI.getCompactUnwindSection() &&
+    if (IsEH && TAI.getCompactUnwindSection() && Frame.CompactUnwindEncoding &&
         Emitter.EmitCompactUnwind(Streamer, Frame)) {
       FDEEnd = NULL;
       continue;