Added llvm-mc support for parsing the .abort directive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75545 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index c0a334a..c796255 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -51,6 +51,8 @@
     virtual void EmitZerofill(MCSection *Section, MCSymbol *Symbol = NULL,
                               unsigned Size = 0, unsigned Pow2Alignment = 0);
 
+    virtual void AbortAssembly(const char *AbortReason = NULL);
+
     virtual void EmitBytes(const char *Data, unsigned Length);
 
     virtual void EmitValue(const MCValue &Value, unsigned Size);
@@ -123,6 +125,14 @@
   OS << ".subsections_via_symbols\n";
 }
 
+void MCAsmStreamer::AbortAssembly(const char *AbortReason) {
+  OS << ".abort";
+  if (AbortReason != NULL)
+    OS << ' ' << AbortReason;
+  OS << '\n';
+  
+}
+
 void MCAsmStreamer::EmitAssignment(MCSymbol *Symbol, const MCValue &Value,
                                    bool MakeAbsolute) {
   assert(!Symbol->getSection() && "Cannot assign to a label!");