llvm-dwarfdump --summarize-types: skip compilation units

Important for DWARFv5 debug info which might contain type units in the
debug_info section, which made summarize-types fairly ineffective/lost
amongst the noise of CUs being dumped.

Author: dwblaikie

llvm/lib/DebugInfo/DWARF/DWARFCompileUnit.cpp

@@ -15,6 +15,8 @@
 using namespace llvm;
 
 void DWARFCompileUnit::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
+  if (DumpOpts.SummarizeTypes)
+    return;
   int OffsetDumpWidth = 2 * dwarf::getDwarfOffsetByteSize(getFormat());
   OS << format("0x%08" PRIx64, getOffset()) << ": Compile Unit:"
      << " length = " << format("0x%0*" PRIx64, OffsetDumpWidth, getLength())

llvm/test/DebugInfo/dwarfdump-type-units.test

@@ -1,5 +1,5 @@
 RUN: llvm-dwarfdump -v %p/Inputs/dwarfdump-type-units.elf-x86-64 | FileCheck -check-prefix=INFO -check-prefix=CHECK -check-prefix=LONG %s
-RUN: llvm-dwarfdump -debug-types %p/Inputs/dwarfdump-type-units.elf-x86-64 -summarize-types | FileCheck -implicit-check-not=DW_ -check-prefix=CHECK -check-prefix=SHORT %s
+RUN: llvm-dwarfdump -debug-types -debug-info %p/Inputs/dwarfdump-type-units.elf-x86-64 -summarize-types | FileCheck -implicit-check-not=DW_ -check-prefix=CHECK -check-prefix=SHORT %s
 RUN: llvm-dwarfdump -v -debug-types %p/Inputs/dwarfdump-type-units.elf-x86-64 | FileCheck -check-prefix=TYPES %s
 
 INFO: debug_info contents: