rearrange MCContext ownership. Before LLVMTargetMachine created it

and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to 
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98450 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 10 deletions

diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 1453c1e231..3ad91adcea 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -31,20 +31,18 @@
 #ifndef LLVM_CODEGEN_MACHINEMODULEINFO_H
 #define LLVM_CODEGEN_MACHINEMODULEINFO_H
 
-#include "llvm/GlobalValue.h"
 #include "llvm/Pass.h"
+#include "llvm/GlobalValue.h"
 #include "llvm/Metadata.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/PointerIntPair.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallSet.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/UniqueVector.h"
 #include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/Support/Dwarf.h"
 #include "llvm/Support/ValueHandle.h"
 #include "llvm/System/DataTypes.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/PointerIntPair.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallVector.h"
 
 namespace llvm {
 
@@ -52,7 +50,6 @@ namespace llvm {
 // Forward declarations.
 class Constant;
 class GlobalVariable;
-class MCSymbol;
 class MDNode;
 class MachineBasicBlock;
 class MachineFunction;
@@ -100,6 +97,9 @@ struct LandingPadInfo {
 /// schemes and reformated for specific use.
 ///
 class MachineModuleInfo : public ImmutablePass {
+  /// Context - This is the MCContext used for the entire code generator.
+  MCContext Context;
+  
   /// ObjFileMMI - This is the object-file-format-specific implementation of
   /// MachineModuleInfoImpl, which lets targets accumulate whatever info they
   /// want.
@@ -163,7 +163,8 @@ public:
     VariableDbgInfoMapTy;
   VariableDbgInfoMapTy VariableDbgInfo;
 
-  MachineModuleInfo();
+  MachineModuleInfo();  // DUMMY CONSTRUCTOR, DO NOT CALL.
+  MachineModuleInfo(const MCAsmInfo &MAI);  // Real constructor.
   ~MachineModuleInfo();
   
   bool doInitialization();
@@ -172,6 +173,9 @@ public:
   /// EndFunction - Discard function meta information.
   ///
   void EndFunction();
+  
+  const MCContext &getContext() const { return Context; }
+  MCContext &getContext() { return Context; }
 
   /// getInfo - Keep track of various per-function pieces of information for
   /// backends that would like to do so.