mcstreamerize AsmPrinter::EmitZeros, at least when emitting to the 
default address space.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93890 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 317e74d..1fd048e 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -203,6 +203,8 @@
 /// EmitFill - Emit NumBytes bytes worth of the value specified by
 /// FillValue.  This implements directives such as '.space'.
 void MCAsmStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
+  if (NumBytes == 0) return;
+  
   if (const char *ZeroDirective = MAI.getZeroDirective()) {
     OS << ZeroDirective << NumBytes;
     if (FillValue != 0)