[DebugInfo] PATCH 2/3: Duplicate logics regarding debug_value_addr

This patch replace all in-memory objects of DebugValueAddrInst with
DebugValueInst + op_deref, and duplicates logics that handles
DebugValueAddrInst with the latter. All related check in the tests
have been updated as well.

Note that this patch neither remove the DebugValueAddrInst class nor
remove `debug_value_addr` syntax in the test inputs.

lib/SILOptimizer/Analysis/MemoryBehavior.cpp

@@ -374,6 +374,10 @@ static bool hasEscapingUses(SILValue address, int &numChecks) {
       case SILInstructionKind::EndAccessInst:
         // Those instructions have no result and cannot escape the address.
         break;
+      case SILInstructionKind::DebugValueInst:
+        if (DebugValueInst::hasAddrVal(user))
+          break;
+        return true;
       case SILInstructionKind::ApplyInst:
       case SILInstructionKind::TryApplyInst:
       case SILInstructionKind::BeginApplyInst: