Convert assert(0) to llvm_unreachable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149967 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp
index 0432921..5206cf1 100644
--- a/lib/Support/ConstantRange.cpp
+++ b/lib/Support/ConstantRange.cpp
@@ -55,7 +55,7 @@
 
   uint32_t W = CR.getBitWidth();
   switch (Pred) {
-    default: assert(0 && "Invalid ICmp predicate to makeICmpRegion()");
+    default: llvm_unreachable("Invalid ICmp predicate to makeICmpRegion()");
     case CmpInst::ICMP_EQ:
       return CR;
     case CmpInst::ICMP_NE:
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 7c4da12..f400c99 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -459,8 +459,7 @@
       bool Valid = false;
       StringRef Comp = Components[Idx];
       switch (Pos) {
-      default:
-        assert(false && "unexpected component type!");
+      default: llvm_unreachable("unexpected component type!");
       case 0:
         Arch = ParseArch(Comp);
         Valid = Arch != UnknownArch;
@@ -618,7 +617,7 @@
   getOSVersion(Major, Minor, Micro);
 
   switch (getOS()) {
-  default: assert(0 && "unexpected OS for Darwin triple");
+  default: llvm_unreachable("unexpected OS for Darwin triple");
   case Darwin:
     // Default to darwin8, i.e., MacOSX 10.4.
     if (Major == 0)