Switch assert(0/false) llvm_unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Option.cpp b/lib/Driver/Option.cpp
index 90d21a3..f1ef7ab 100644
--- a/lib/Driver/Option.cpp
+++ b/lib/Driver/Option.cpp
@@ -61,7 +61,7 @@
   llvm::errs() << "<";
   switch (Kind) {
   default:
-    assert(0 && "Invalid kind");
+    llvm_unreachable("Invalid kind");
 #define P(N) case N: llvm::errs() << #N; break
     P(GroupClass);
     P(InputClass);
@@ -114,7 +114,7 @@
 }
 
 Arg *OptionGroup::accept(const ArgList &Args, unsigned &Index) const {
-  assert(0 && "accept() should never be called on an OptionGroup");
+  llvm_unreachable("accept() should never be called on an OptionGroup");
   return 0;
 }
 
@@ -123,7 +123,7 @@
 }
 
 Arg *InputOption::accept(const ArgList &Args, unsigned &Index) const {
-  assert(0 && "accept() should never be called on an InputOption");
+  llvm_unreachable("accept() should never be called on an InputOption");
   return 0;
 }
 
@@ -132,7 +132,7 @@
 }
 
 Arg *UnknownOption::accept(const ArgList &Args, unsigned &Index) const {
-  assert(0 && "accept() should never be called on an UnknownOption");
+  llvm_unreachable("accept() should never be called on an UnknownOption");
   return 0;
 }