diff --git a/llvm/lib/Target/X86/MachineCodeEmitter.cpp b/llvm/lib/Target/X86/MachineCodeEmitter.cpp
index 38d1be6a59bb148ca3c47f7c78a7729b7d03867f..dc9f4c08a739ec4ae2771b416e4092dd668d8268 100644
--- a/llvm/lib/Target/X86/MachineCodeEmitter.cpp
+++ b/llvm/lib/Target/X86/MachineCodeEmitter.cpp
@@ -213,6 +213,7 @@ unsigned sizeOfPtr (const MachineInstrDescriptor &Desc) {
   case X86II::Arg80:  return 10;
   case X86II::Arg128: return 16;
   default: assert(0 && "Memory size not set!");
+    return 0;
   }
 }
 
diff --git a/llvm/lib/Target/X86/X86CodeEmitter.cpp b/llvm/lib/Target/X86/X86CodeEmitter.cpp
index 38d1be6a59bb148ca3c47f7c78a7729b7d03867f..dc9f4c08a739ec4ae2771b416e4092dd668d8268 100644
--- a/llvm/lib/Target/X86/X86CodeEmitter.cpp
+++ b/llvm/lib/Target/X86/X86CodeEmitter.cpp
@@ -213,6 +213,7 @@ unsigned sizeOfPtr (const MachineInstrDescriptor &Desc) {
   case X86II::Arg80:  return 10;
   case X86II::Arg128: return 16;
   default: assert(0 && "Memory size not set!");
+    return 0;
   }
 }