Right now all of the relocations are 32-bit dwarf, and the relocation
information doesn't return an addend for Rel relocations. Go ahead
and use this information to fix relocation handling inside dwarfdump
for 32-bit ELF REL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171126 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFFormValue.cpp b/lib/DebugInfo/DWARFFormValue.cpp
index 1d8ea01..efc2d96 100644
--- a/lib/DebugInfo/DWARFFormValue.cpp
+++ b/lib/DebugInfo/DWARFFormValue.cpp
@@ -108,8 +108,8 @@
         = cu->getContext().relocMap().find(*offset_ptr);
       if (AI != cu->getContext().relocMap().end()) {
         const std::pair<uint8_t, int64_t> &R = AI->second;
-        Value.uval = R.second;
-        *offset_ptr += R.first;
+        Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize()) +
+                     R.second;
       } else
         Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize());
       break;
@@ -156,8 +156,7 @@
         = cu->getContext().relocMap().find(*offset_ptr);
       if (AI != cu->getContext().relocMap().end()) {
         const std::pair<uint8_t, int64_t> &R = AI->second;
-        Value.uval = R.second;
-        *offset_ptr += R.first;
+        Value.uval = data.getU32(offset_ptr) + R.second;
       } else
         Value.uval = data.getU32(offset_ptr);
       break;