Rebased PNaCl localmods in LLVM to 223109

lib/Support/Unix/Memory.inc

Index: lib/Support/Unix/Memory.inc
diff --git a/lib/Support/Unix/Memory.inc b/lib/Support/Unix/Memory.inc
index c9d89a82474dece46a4a2ffd80e958da183343a0..c61a8e852d8d399a8ace2e0c65a30e5e8708ad13 100644
--- a/lib/Support/Unix/Memory.inc
+++ b/lib/Support/Unix/Memory.inc
@@ -333,6 +333,10 @@ void Memory::InvalidateInstructionCache(const void *Addr,
   for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
     asm volatile("icbi 0, %0" : : "r"(Line));
   asm volatile("isync");
+  // @LOCALMOD-START
+#  elif defined(__native_client__)
+  exit(1); // Native Client disallows JIT-compilation.
+  // @LOCALMOD-END
 #  elif (defined(__arm__) || defined(__aarch64__)) && defined(__GNUC__)
   // FIXME: Can we safely always call this for __GNUC__ everywhere?
   const char *Start = static_cast<const char *>(Addr);