1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/AsmParser/X86Operand.h b/llvm/lib/Target/X86/AsmParser/X86Operand.h
index 591e6f4102f..37479954a70 100644
--- a/llvm/lib/Target/X86/AsmParser/X86Operand.h
+++ b/llvm/lib/Target/X86/AsmParser/X86Operand.h
@@ -262,10 +262,10 @@ struct X86Operand final : public MCParsedAsmOperand {
 
   bool isImmUnsignedi4() const {
     if (!isImm()) return false;
-    // If this isn't a constant expr, just assume it fits and let relaxation
-    // handle it.
+    // If this isn't a constant expr, reject it. The immediate byte is shared
+    // with a register encoding. We can't have it affected by a relocation.
     const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
-    if (!CE) return true;
+    if (!CE) return false;
     return isImmUnsignedi4Value(CE->getValue());
   }