Produce a R_X86_64_32 when the value is >=0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114339 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index 35f029d..ebbba13 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -541,10 +541,13 @@
       case X86::reloc_pcrel_4byte:
       case FK_Data_4:
         // check that the offset fits within a signed long
-        if (isInt<32>(Target.getConstant()))
+        if (Target.getConstant() < 0) {
+          assert(isInt<32>(Target.getConstant()));
           Type = ELF::R_X86_64_32S;
-        else
+        } else {
+          assert(isUInt<32>(Target.getConstant()));
           Type = ELF::R_X86_64_32;
+        }
         break;
       case FK_Data_2: Type = ELF::R_X86_64_16; break;
       case X86::reloc_pcrel_1byte: