Vendor import of llvm RELEASE_350/final tag r216957 (effectively, 3.5.0 release):

https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_350/final@216957

1 files changed, 35 insertions, 0 deletions

diff --git a/lib/MC/MCLinkerOptimizationHint.cpp b/lib/MC/MCLinkerOptimizationHint.cpp
new file mode 100644
index 0000000..3f8d620
--- /dev/null
+++ b/lib/MC/MCLinkerOptimizationHint.cpp
@@ -0,0 +1,35 @@
+//===-- llvm/MC/MCLinkerOptimizationHint.cpp ----- LOH handling -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCLinkerOptimizationHint.h"
+#include "llvm/MC/MCAsmLayout.h"
+#include "llvm/Support/LEB128.h"
+#include "llvm/MC/MCStreamer.h"
+
+using namespace llvm;
+
+// Each LOH is composed by, in this order (each field is encoded using ULEB128):
+// - Its kind.
+// - Its number of arguments (let say N).
+// - Its arg1.
+// - ...
+// - Its argN.
+// <arg1> to <argN> are absolute addresses in the object file, i.e.,
+// relative addresses from the beginning of the object file.
+void MCLOHDirective::Emit_impl(raw_ostream &OutStream,
+                               const MachObjectWriter &ObjWriter,
+                               const MCAsmLayout &Layout) const {
+  const MCAssembler &Asm = Layout.getAssembler();
+  encodeULEB128(Kind, OutStream);
+  encodeULEB128(Args.size(), OutStream);
+  for (LOHArgs::const_iterator It = Args.begin(), EndIt = Args.end();
+       It != EndIt; ++It)
+    encodeULEB128(ObjWriter.getSymbolAddress(&Asm.getSymbolData(**It), Layout),
+                  OutStream);
+}