Bump expected upstream LLVM version to 8.0. (emscripten-core#6930)

sbc100 · web-flow · commit 16f3f29b540b · 2018-08-01T15:37:22.000-07:00
diff --git a/tools/shared.py b/tools/shared.py
@@ -356,7 +356,7 @@ def fix_js_engine(old, new):
 
 def expected_llvm_version():
   if get_llvm_target() == WASM_TARGET:
-    return "7.0"
+    return "8.0"
   else:
     return "6.0"
 
