[DWARF] - Use DWARFAddressRange struct instead of uint64_t pair for DWARFAddressRangesVector.

Recommit of r303159 "[DWARF] - Use DWARFAddressRange struct instead of uint64_t pair for DWARFAddressRangesVector"
All places were shitched to use DWARFAddressRange now.

Suggested during review of D33184.

llvm-svn: 303163
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
index 24039eb..e3bd759 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
@@ -60,8 +60,8 @@
     OS << '\n';
     OS.indent(Indent);
     OS << format("[0x%0*" PRIx64 " - 0x%0*" PRIx64 ")",
-                 AddressSize*2, Range.first,
-                 AddressSize*2, Range.second);
+                 AddressSize*2, Range.LowPC,
+                 AddressSize*2, Range.HighPC);
   }
 }
 
@@ -229,9 +229,9 @@
     return DWARFAddressRangesVector();
   // Single range specified by low/high PC.
   uint64_t LowPC, HighPC;
-  if (getLowAndHighPC(LowPC, HighPC)) {
-    return DWARFAddressRangesVector(1, std::make_pair(LowPC, HighPC));
-  }
+  if (getLowAndHighPC(LowPC, HighPC))
+    return {{LowPC, HighPC}};
+
   // Multiple ranges from .debug_ranges section.
   auto RangesOffset = toSectionOffset(find(DW_AT_ranges));
   if (RangesOffset) {
@@ -257,7 +257,7 @@
 
 bool DWARFDie::addressRangeContainsAddress(const uint64_t Address) const {
   for (const auto& R : getAddressRanges()) {
-    if (R.first <= Address && Address < R.second)
+    if (R.LowPC <= Address && Address < R.HighPC)
       return true;
   }
   return false;