Consistent PDBGUID Formatting

Author: mayanez

llvm/test/tools/llvm-readobj/COFF/debug-directory.test

@@ -12,7 +12,7 @@ CHECK:     AddressOfRawData: 0x5B068
 CHECK:     PointerToRawData: 0x5A268
 CHECK:     PDBInfo {
 CHECK:       PDBSignature: 0x53445352
-CHECK:       PDBGUID: (96 83 40 42 81 07 9D 40 90 1B 4A 3C 0D 4F 56 32)
+CHECK:       PDBGUID: {42408396-0781-409D-901B-4A3C0D4F5632}
 CHECK:       PDBAge: 3
 CHECK:       PDBFileName: D:\src\llvm\build\has_pdb.pdb
 CHECK:     }

llvm/tools/llvm-readobj/COFFDumper.cpp

@@ -27,6 +27,7 @@
 #include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h"
 #include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h"
 #include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
+#include "llvm/DebugInfo/CodeView/Formatters.h"
 #include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h"
 #include "llvm/DebugInfo/CodeView/Line.h"
 #include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
@@ -793,7 +794,10 @@ void COFFDumper::printCOFFDebugDirectory() {
       DictScope PDBScope(W, "PDBInfo");
       W.printHex("PDBSignature", DebugInfo->Signature.CVSignature);
       if (DebugInfo->Signature.CVSignature == OMF::Signature::PDB70) {
-        W.printBinary("PDBGUID", ArrayRef(DebugInfo->PDB70.Signature));
+        SmallString<38> FormattedGUIDStr;
+        raw_svector_ostream OS(FormattedGUIDStr);
+        fmt_guid(DebugInfo->PDB70.Signature).format(OS, "" /*Style=unused*/);
+        W.printString("PDBGUID", FormattedGUIDStr);
         W.printNumber("PDBAge", DebugInfo->PDB70.Age);
         W.printString("PDBFileName", PDBFileName);
       }