[StackMaps] Add location size to llvm-readobj -stackmap output

The size field of a location can be different for each entry, so it is useful to have this displayed in the output of llvm-readobj -stackmap. Below is an example of how the output would look:

Record ID: 2882400000, instruction offset: 16
   3 locations:
     #1: Constant 1, size: 8
     #2: Constant 2, size: 8
     #3: Constant 3, size: 8
   0 live-outs: [ ]

Patch By: jacob.hughes@kcl.ac.uk (with heavy modification by me)
Differential Revision: https://reviews.llvm.org/D59169

llvm-svn: 358324
diff --git a/llvm/tools/llvm-readobj/StackMapPrinter.h b/llvm/tools/llvm-readobj/StackMapPrinter.h
index c40e65a..ef75756 100644
--- a/llvm/tools/llvm-readobj/StackMapPrinter.h
+++ b/llvm/tools/llvm-readobj/StackMapPrinter.h
@@ -47,24 +47,24 @@
       OS << "      #" << ++LocationIndex << ": ";
       switch (Loc.getKind()) {
       case StackMapParserT::LocationKind::Register:
-        OS << "Register R#" << Loc.getDwarfRegNum() << "\n";
+        OS << "Register R#" << Loc.getDwarfRegNum();
         break;
       case StackMapParserT::LocationKind::Direct:
-        OS << "Direct R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset()
-           << "\n";
+        OS << "Direct R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset();
         break;
       case StackMapParserT::LocationKind::Indirect:
         OS << "Indirect [R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset()
-           << "]\n";
+           << "]";
         break;
       case StackMapParserT::LocationKind::Constant:
-        OS << "Constant " << Loc.getSmallConstant() << "\n";
+        OS << "Constant " << Loc.getSmallConstant();
         break;
       case StackMapParserT::LocationKind::ConstantIndex:
         OS << "ConstantIndex #" << Loc.getConstantIndex() << " ("
-           << SMP.getConstant(Loc.getConstantIndex()).getValue() << ")\n";
+           << SMP.getConstant(Loc.getConstantIndex()).getValue() << ")";
         break;
       }
+      OS << ", size: " << Loc.getSizeInBytes() << "\n";
     }
 
     raw_ostream &OS = W.startLine();