Update the compiler-builtins submodule

alexcrichton · alexcrichton · commit 8fb918bbd519 · 2018-07-18T10:09:20.000-07:00
This commit updates the compiler-builtins submodule, primarily pulling in rust-lang/compiler-builtins#248 which should resolve a number of undefined symbols on the wasm target by default (instead of leaving them in the final binary).
diff --git a/src/libcompiler_builtins b/src/libcompiler_builtins
@@ -1 +1 @@
-Subproject commit 86bf357a14cacb4a4169455e729d409b5ecc1da0
+Subproject commit b4a3645cfe102a100b6ebecbe76df37bc957eda8
