Re-apply LiveInterval index dumping patch, with fixes suggested by Bill

and others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78003 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 31 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index 32bf67b..aa5f0ff 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -538,6 +538,37 @@ namespace llvm {
     void printRegName(unsigned reg) const;
   };
 
+  /// IntervalPrefixPrinter - Print live interval indices before each
+  /// instruction.
+  class IntervalPrefixPrinter : public PrefixPrinter {
+  private:
+    const LiveIntervals &liinfo;
+
+  public:
+    IntervalPrefixPrinter(const LiveIntervals &lii)
+        : liinfo(lii) {};
+
+    // We need null implementations of the other virtual functions to
+    // avoid warnings about hidden virtual functions.
+
+    raw_ostream &operator()(raw_ostream &out,
+                            const MachineBasicBlock &instr) const {
+      return out;
+    }
+    
+    raw_ostream &operator()(raw_ostream &out,
+                            const MachineInstr &instr) const;
+
+    std::ostream &operator()(std::ostream &out,
+                             const MachineBasicBlock &instr) const {
+      return out;
+    }
+    
+    std::ostream &operator()(std::ostream &out,
+                             const MachineInstr &instr) const {
+      return out;
+    }
+  };
 } // End llvm namespace
 
 #endif