Fix typos.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126018 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index e9aa5ed..d1bf08c 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -5509,7 +5509,7 @@
   case MVT::v16i8: return X86ISD::PUNPCKLBW;
   case MVT::v8i16: return X86ISD::PUNPCKLWD;
   default:
-    llvm_unreachable("Unknow type for unpckl");
+    llvm_unreachable("Unknown type for unpckl");
   }
   return 0;
 }
@@ -5523,7 +5523,7 @@
   case MVT::v16i8: return X86ISD::PUNPCKHBW;
   case MVT::v8i16: return X86ISD::PUNPCKHWD;
   default:
-    llvm_unreachable("Unknow type for unpckh");
+    llvm_unreachable("Unknown type for unpckh");
   }
   return 0;
 }