[llvm-profdata] Add SaturatingAdd/SaturatingMultiply Helper Functions

[oota-llvm.git] / include / llvm / Support / MemoryBuffer.h

diff --git a/include/llvm/Support/MemoryBuffer.h b/include/llvm/Support/MemoryBuffer.h
index cc65ca563b3e7f8fd83d8f20dc6b03da7a7cfbc6..d6ff69d50f591482e7a6eceda60910db51a2c909 100644 (file)
--- a/include/llvm/Support/MemoryBuffer.h
+++ b/include/llvm/Support/MemoryBuffer.h
@@ -17,11 +17,9 @@
 #include "llvm-c/Support.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/CBindingWrapping.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/ErrorOr.h"
 #include <memory>
-#include <system_error>
 
 namespace llvm {
 class MemoryBufferRef;
@@ -124,9 +122,10 @@ public:
   /// Open the specified file as a MemoryBuffer, or open stdin if the Filename
   /// is "-".
   static ErrorOr<std::unique_ptr<MemoryBuffer>>
-  getFileOrSTDIN(const Twine &Filename, int64_t FileSize = -1);
+  getFileOrSTDIN(const Twine &Filename, int64_t FileSize = -1,
+                 bool RequiresNullTerminator = true);
 
-  /// Map a subrange of the the specified file as a MemoryBuffer.
+  /// Map a subrange of the specified file as a MemoryBuffer.
   static ErrorOr<std::unique_ptr<MemoryBuffer>>
   getFileSlice(const Twine &Filename, uint64_t MapSize, uint64_t Offset);
 
@@ -153,6 +152,8 @@ class MemoryBufferRef {
 
 public:
   MemoryBufferRef() {}
+  MemoryBufferRef(MemoryBuffer& Buffer)
+      : Buffer(Buffer.getBuffer()), Identifier(Buffer.getBufferIdentifier()) {}
   MemoryBufferRef(StringRef Buffer, StringRef Identifier)
       : Buffer(Buffer), Identifier(Identifier) {}