llvm-mc/X86: Encode constant MCValue's correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80485 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index d4d43af..0c472a7 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -971,6 +971,12 @@
     if (!Op.isMCValue())
       return false;
 
+    const MCValue &Val = Op.getMCValue();
+    if (Val.isAbsolute()) {
+      Instr->addOperand(MachineOperand::CreateImm(Val.getConstant()));
+      return true;
+    }
+
     // FIXME: Relocation / fixup.
     Instr->addOperand(MachineOperand::CreateImm(0));
     return true;