[NFC][Object] Include header `BitcodeReader.h` instead of using forward declaration...

`BitcodeModule` is used as element of a vector in `IRSymtabFile`, while in the
header there is only a forward declaration. It will work if the header `BitcodeReader.h`
is included before including `IRObjectFile.h`. However, it is not always the case,
causing compilation error. This patch simply includes the header and remove the
forward declaration.

Reviewed By: tejohnson

Differential Revision: https://reviews.llvm.org/D139556

diff --git a/llvm/include/llvm/Object/IRObjectFile.h b/llvm/include/llvm/Object/IRObjectFile.h
index 6b3f2cd..ee99110 100644 (file)
--- a/llvm/include/llvm/Object/IRObjectFile.h
+++ b/llvm/include/llvm/Object/IRObjectFile.h
@@ -13,12 +13,12 @@
 #ifndef LLVM_OBJECT_IROBJECTFILE_H
 #define LLVM_OBJECT_IROBJECTFILE_H
 
+#include "llvm/Bitcode/BitcodeReader.h"
 #include "llvm/Object/IRSymtab.h"
 #include "llvm/Object/ModuleSymbolTable.h"
 #include "llvm/Object/SymbolicFile.h"
 
 namespace llvm {
-class BitcodeModule;
 class Module;
 
 namespace object {
@@ -82,6 +82,6 @@ Expected<IRSymtabFile> readIRSymtab(MemoryBufferRef MBRef);
 
 }
 
-}
+} // namespace llvm
 
 #endif