llvm-dwarfdump --diff should not print DW_AT_ranges

[JDevlieghere]

Summary

We shouldn't print ranges in diff mode. This patch fixes that.

[aprantl]

Thanks!

llvm/trunk/lib/DebugInfo/DWARF/DWARFDie.cpp

static void dumpApplePropertyAttribute(raw_ostream &OS, uint64_t Val) {
   } while (true);
   OS << ")";
 }
 
 static void dumpRanges(const DWARFObject &Obj, raw_ostream &OS,
                        const DWARFAddressRangesVector &Ranges,
                        unsigned AddressSize, unsigned Indent,
                        const DIDumpOptions &DumpOpts) {
+  if (!DumpOpts.ShowAddresses)
+    return;
+
   ArrayRef<SectionName> SectionNames;
   if (DumpOpts.Verbose)
     SectionNames = Obj.getSectionNames();
 
   for (const DWARFAddressRange &R : Ranges) {
-
     OS << '\n';
     OS.indent(Indent);
     R.dump(OS, AddressSize);
 
     if (SectionNames.empty() || R.SectionIndex == -1ULL)
       continue;
 
     StringRef Name = SectionNames[R.SectionIndex].Name;

llvm/trunk/test/DebugInfo/X86/dwarfdump-ranges-unrelocated.s

 
 # RUN: llvm-dwarfdump %t | FileCheck %s --check-prefix=BRIEF
 # BRIEF: DW_TAG_compile_unit
 # BRIEF: DW_AT_ranges         (0x00000000
 # BRIEF-NEXT:  [0x0000000000000000, 0x0000000000000001)
 # BRIEF-NEXT:  [0x0000000000000000, 0x0000000000000002)
 # BRIEF-NEXT:  [0x0000000000000000, 0x0000000000000003))
 
+# RUN: llvm-dwarfdump -diff %t | FileCheck %s --check-prefix=DIFF
+# DIFF: DW_TAG_compile_unit
+# DIFF-NEXT: DW_AT_producer ()
+# DIFF-NEXT: DW_AT_language (DW_LANG_C_plus_plus)
+# DIFF-NEXT: DW_AT_name ()
+# DIFF-NEXT: DW_AT_stmt_list  ()
+# DIFF-NEXT: DW_AT_comp_dir ()
+# DIFF-NEXT: DW_AT_low_pc ()
+# DIFF-NEXT: DW_AT_ranges ()
+
 ## Asm code for testcase is a reduced and modified output from next
 ## invocation and source:
 # clang test.cpp -S -o test.s -gmlt -ffunction-sections
 # test.cpp:
 #   void foo1() { }
 #   void foo2() { }
 
 .section .text.foo1,"ax",@progbits