[LibCallsShrinkWrap] More descriptive assertion messages.

Fix a typo while I'm here.

llvm-svn: 301474
diff --git a/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp b/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
index 9497cda..5ce8785 100644
--- a/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
+++ b/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
@@ -330,7 +330,7 @@
     UpperBound = 11356.0f;
     break;
   default:
-    llvm_unreachable("Should be reach here");
+    llvm_unreachable("Unhandled library call!");
   }
 
   ++NumWrappedOneCond;
@@ -394,7 +394,7 @@
     UpperBound = 11383.0f;
     break;
   default:
-    llvm_unreachable("Should be reach here");
+    llvm_unreachable("Unhandled library call!");
   }
 
   ++NumWrappedTwoCond;
@@ -483,7 +483,7 @@
 
 // Wrap conditions that can potentially generate errno to the library call.
 void LibCallsShrinkWrap::shrinkWrapCI(CallInst *CI, Value *Cond) {
-  assert(Cond != nullptr && "hrinkWrapCI is not expecting an empty call inst");
+  assert(Cond != nullptr && "ShrinkWrapCI is not expecting an empty call inst");
   MDNode *BranchWeights =
       MDBuilder(CI->getContext()).createBranchWeights(1, 2000);