[CodeGen] Unify MBB reference format in both MIR and debug output

As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
diff --git a/llvm/lib/CodeGen/LiveDebugVariables.cpp b/llvm/lib/CodeGen/LiveDebugVariables.cpp
index 97bb7c7..5f0559b 100644
--- a/llvm/lib/CodeGen/LiveDebugVariables.cpp
+++ b/llvm/lib/CodeGen/LiveDebugVariables.cpp
@@ -1174,7 +1174,7 @@
     MachineFunction::iterator MBB = LIS.getMBBFromIndex(Start)->getIterator();
     SlotIndex MBBEnd = LIS.getMBBEndIdx(&*MBB);
 
-    DEBUG(dbgs() << " BB#" << MBB->getNumber() << '-' << MBBEnd);
+    DEBUG(dbgs() << ' ' << printMBBReference(*MBB) << '-' << MBBEnd);
     insertDebugValue(&*MBB, Start, Stop, Loc, Spilled, LIS, TII, TRI);
     // This interval may span multiple basic blocks.
     // Insert a DBG_VALUE into each one.
@@ -1184,7 +1184,7 @@
       if (++MBB == MFEnd)
         break;
       MBBEnd = LIS.getMBBEndIdx(&*MBB);
-      DEBUG(dbgs() << " BB#" << MBB->getNumber() << '-' << MBBEnd);
+      DEBUG(dbgs() << ' ' << printMBBReference(*MBB) << '-' << MBBEnd);
       insertDebugValue(&*MBB, Start, Stop, Loc, Spilled, LIS, TII, TRI);
     }
     DEBUG(dbgs() << '\n');