Add basic support for .debug_ranges section to LLVM's DebugInfo library.

This section (introduced in DWARF-3) is used to define instruction address
ranges for functions that are not contiguous and can't be described
by low_pc/high_pc attributes (this is the usual case for inlined subroutines).
The patch is the first step to support fetching complete inlining info from DWARF.

Reviewed by Benjamin Kramer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162657 91177308-0d34-0410-b5e6-96231b3b80d8

lib/DebugInfo/DIContext.cpp

@@ -18,7 +18,9 @@ DIContext *DIContext::getDWARFContext(bool isLittleEndian,
                                       StringRef abbrevSection,
                                       StringRef aRangeSection,
                                       StringRef lineSection,
-                                      StringRef stringSection) {
+                                      StringRef stringSection,
+                                      StringRef rangeSection) {
   return new DWARFContextInMemory(isLittleEndian, infoSection, abbrevSection,
-                                  aRangeSection, lineSection, stringSection);
+                                  aRangeSection, lineSection, stringSection,
+                                  rangeSection);
 }