Added saveBBreferences() for BasicBlock resolution.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6451 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 16 insertions, 4 deletions

diff --git a/include/llvm/CodeGen/MachineCodeEmitter.h b/include/llvm/CodeGen/MachineCodeEmitter.h
index ba70b18d18..1db7183131 100644
--- a/include/llvm/CodeGen/MachineCodeEmitter.h
+++ b/include/llvm/CodeGen/MachineCodeEmitter.h
@@ -10,7 +10,10 @@
 #ifndef LLVM_CODEGEN_MACHINE_CODE_EMITTER_H
 #define LLVM_CODEGEN_MACHINE_CODE_EMITTER_H
 
+#include <iostream>
 #include <string>
+class BasicBlock;
+class MachineInstr;
 class MachineFunction;
 class MachineBasicBlock;
 class MachineConstantPool;
@@ -91,6 +94,11 @@ struct MachineCodeEmitter {
   ///
   static MachineCodeEmitter*
   createFilePrinterMachineCodeEmitter(MachineCodeEmitter&);
+
+  /// 
+  virtual void saveBBreference(BasicBlock* BB, MachineInstr &MI) {
+    std::cerr << "Save BB reference unimplemented\n";
+  }
 };
 
 #endif
diff --git a/lib/CodeGen/MachineCodeEmitter.cpp b/lib/CodeGen/MachineCodeEmitter.cpp
index e67b4aaa02..607480c75d 100644
--- a/lib/CodeGen/MachineCodeEmitter.cpp
+++ b/lib/CodeGen/MachineCodeEmitter.cpp
@@ -158,9 +158,7 @@ namespace {
       }
     }
     void emitPCRelativeDisp(Value *V) {
-      // put block in mapping BB -> { instr, address }. when BB is beginning to
-      // output, find instr, set disp, overwrite instr at addr using the
-      // unsigned value gotten from emitter
+      if (MCE) MCE->emitPCRelativeDisp(V);
     }
 
     void emitGlobalAddress(GlobalValue *V, bool isPCRelative) {
@@ -173,9 +171,15 @@ namespace {
     void emitFunctionConstantValueAddress(unsigned ConstantNum, int Offset) {
       if (MCE) MCE->emitFunctionConstantValueAddress(ConstantNum, Offset);
     }
+
+    virtual void saveBBreference(BasicBlock* BB, MachineInstr &MI) {
+      if (MCE) MCE->saveBBreference(BB, MI);
+    }
+
   };
 }
 
-MachineCodeEmitter *MachineCodeEmitter::createFilePrinterMachineCodeEmitter(MachineCodeEmitter &MCE) {
+MachineCodeEmitter *MachineCodeEmitter::createFilePrinterMachineCodeEmitter
+(MachineCodeEmitter &MCE) {
   return new FilePrinterMachineCodeEmitter(MCE, std::cerr);
 }