MC: Add TargetMachine support for setting the value of MCRelaxAll with

-filetype=obj.

llvm-svn: 104747

llvm/include/llvm/Target/TargetMachine.h

@@ -101,7 +101,9 @@ protected: // Can only create subclasses.
   /// AsmInfo - Contains target specific asm information.
   ///
   const MCAsmInfo *AsmInfo;
-  
+
+  unsigned MCRelaxAll : 1;
+
 public:
   virtual ~TargetMachine();
 
@@ -158,6 +160,14 @@ public:
   /// 
   virtual const TargetELFWriterInfo *getELFWriterInfo() const { return 0; }
 
+  /// hasMCRelaxAll - Check whether all machine code instructions should be
+  /// relaxed.
+  bool hasMCRelaxAll() const { return MCRelaxAll; }
+
+  /// setMCRelaxAll - Set whether all machine code instructions should be
+  /// relaxed.
+  void setMCRelaxAll(bool Value) { MCRelaxAll = Value; }
+
   /// getRelocationModel - Returns the code generation relocation model. The
   /// choices are static, PIC, and dynamic-no-pic, and target default.
   static Reloc::Model getRelocationModel();

llvm/lib/CodeGen/LLVMTargetMachine.cpp

@@ -160,8 +160,10 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
     TargetAsmBackend *TAB = getTarget().createAsmBackend(TargetTriple);
     if (MCE == 0 || TAB == 0)
       return true;
-    
-    AsmStreamer.reset(createMachOStreamer(*Context, *TAB, Out, MCE));
+
+    AsmStreamer.reset(getTarget().createObjectStreamer(TargetTriple, *Context,
+                                                       *TAB, Out, MCE,
+                                                       hasMCRelaxAll()));
     break;
   }
   case CGFT_Null:

llvm/lib/Target/TargetMachine.cpp

@@ -212,7 +212,8 @@ FunctionSections("ffunction-sections",
 //
 
 TargetMachine::TargetMachine(const Target &T) 
-  : TheTarget(T), AsmInfo(0) {
+  : TheTarget(T), AsmInfo(0),
+    MCRelaxAll(false) {
   // Typically it will be subtargets that will adjust FloatABIType from Default
   // to Soft or Hard.
   if (UseSoftFloat)