[MC] Untangle MCContext and MCObjectFileInfo

This untangles the MCContext and the MCObjectFileInfo. There is a circular
dependency between MCContext and MCObjectFileInfo. Currently this dependency
also exists during construction: You can't contruct a MOFI without a MCContext
without constructing the MCContext with a dummy version of that MOFI first.
This removes this dependency during construction. In a perfect world,
MCObjectFileInfo wouldn't depend on MCContext at all, but only be stored in the
MCContext, like other MC information. This is future work.

This also shifts/adds more information to the MCContext making it more
available to the different targets. Namely:

- TargetTriple
- ObjectFileType
- SubtargetInfo

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D101462

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 8dbd88f..0d31bec 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -1577,9 +1577,9 @@ static void disassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
     reportError(Obj->getFileName(),
                 "no instruction info for target " + TripleName);
   MCObjectFileInfo MOFI;
-  MCContext Ctx(AsmInfo.get(), MRI.get(), &MOFI);
+  MCContext Ctx(Triple(TripleName), AsmInfo.get(), MRI.get(), &MOFI, STI.get());
   // FIXME: for now initialize MCObjectFileInfo with default values
-  MOFI.InitMCObjectFileInfo(Triple(TripleName), false, Ctx);
+  MOFI.initMCObjectFileInfo(Ctx, /*PIC=*/false);
 
   std::unique_ptr<MCDisassembler> DisAsm(
       TheTarget->createMCDisassembler(*STI, Ctx));