Fix a crash when producing COFF.

llvm-svn: 271229
diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp
index cd0ab73..90542dc 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86WinCOFFObjectWriter.cpp
@@ -53,6 +53,8 @@
     case FK_PCRel_4:
     case X86::reloc_riprel_4byte:
     case X86::reloc_riprel_4byte_movq_load:
+    case X86::reloc_riprel_4byte_relax:
+    case X86::reloc_riprel_4byte_relax_rex:
       return COFF::IMAGE_REL_AMD64_REL32;
     case FK_Data_4:
     case X86::reloc_signed_4byte: