add a "MCStreamer::EmitFill" method, and move the default implementation

(which just iteratively emits bytes) to MCStreamer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93888 91177308-0d34-0410-b5e6-96231b3b80d8

lib/MC/MCStreamer.cpp

@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCExpr.h"
 
 using namespace llvm;
 
@@ -16,3 +17,11 @@ MCStreamer::MCStreamer(MCContext &_Context) : Context(_Context), CurSection(0) {
 
 MCStreamer::~MCStreamer() {
 }
+
+/// EmitFill - Emit NumBytes bytes worth of the value specified by
+/// FillValue.  This implements directives such as '.space'.
+void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
+  const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
+  for (uint64_t i = 0, e = NumBytes; i != e; ++i)
+    EmitValue(E, 1);
+}