IRReader: don't mark MemoryBuffers const

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211883 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Bitcode/ReaderWriter.h

@@ -52,7 +52,7 @@ namespace llvm {
 
   /// Read the specified bitcode file, returning the module.
   /// This method *never* takes ownership of Buffer.
-  ErrorOr<Module *> parseBitcodeFile(const MemoryBuffer *Buffer,
+  ErrorOr<Module *> parseBitcodeFile(MemoryBuffer *Buffer,
                                      LLVMContext &Context);
 
   /// WriteBitcodeToFile - Write the specified module to the specified

include/llvm/IRReader/IRReader.h

@@ -41,8 +41,7 @@ Module *getLazyIRFileModule(const std::string &Filename, SMDiagnostic &Err,
 /// If the given MemoryBuffer holds a bitcode image, return a Module
 /// for it.  Otherwise, attempt to parse it as LLVM Assembly and return
 /// a Module for it. This function *never* takes ownership of Buffer.
-Module *ParseIR(const MemoryBuffer *Buffer, SMDiagnostic &Err,
-                LLVMContext &Context);
+Module *ParseIR(MemoryBuffer *Buffer, SMDiagnostic &Err, LLVMContext &Context);
 
 /// If the given file holds a bitcode image, return a Module for it.
 /// Otherwise, attempt to parse it as LLVM Assembly and return a Module

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -3406,10 +3406,9 @@ Module *llvm::getStreamedBitcodeModule(const std::string &name,
   return M;
 }
 
-ErrorOr<Module *> llvm::parseBitcodeFile(const MemoryBuffer *Buffer,
+ErrorOr<Module *> llvm::parseBitcodeFile(MemoryBuffer *Buffer,
                                          LLVMContext &Context) {
-  ErrorOr<Module *> ModuleOrErr =
-      getLazyBitcodeModule(const_cast<MemoryBuffer *>(Buffer), Context);
+  ErrorOr<Module *> ModuleOrErr = getLazyBitcodeModule(Buffer, Context);
   if (!ModuleOrErr)
     return ModuleOrErr;
   Module *M = ModuleOrErr.get();

lib/IRReader/IRReader.cpp

@@ -62,7 +62,7 @@ Module *llvm::getLazyIRFileModule(const std::string &Filename, SMDiagnostic &Err
   return getLazyIRModule(File.release(), Err, Context);
 }
 
-Module *llvm::ParseIR(const MemoryBuffer *Buffer, SMDiagnostic &Err,
+Module *llvm::ParseIR(MemoryBuffer *Buffer, SMDiagnostic &Err,
                       LLVMContext &Context) {
   NamedRegionTimer T(TimeIRParsingName, TimeIRParsingGroupName,
                      TimePassesIsEnabled);