---

yaml
---
r: 228849
b: refs/heads/try
c: 20aa27b
h: refs/heads/master
i:
  228847: c7043ef
v: v3

Author: pnkfelix

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: aca2057ed5fb7af3f8905b2bc01f72fa001c35c8
 refs/heads/snap-stage3: 1af31d4974e33027a68126fa5a5a3c2c6491824f
-refs/heads/try: 9ef61f1ee0690b4fb04192a283113901d5764b32
+refs/heads/try: 20aa27b7bca3504f6a7672cc88e17a9c286cec4b
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try/src/librustc/session/config.rs

@@ -594,6 +594,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
           "Force drop flag checks on or off"),
     trace_macros: bool = (false, parse_bool,
           "For every macro invocation, print its name and arguments"),
+    disable_nonzeroing_move_hints: bool = (false, parse_bool,
+          "Force nonzeroing move optimization off"),
 }
 
 pub fn default_lib_output() -> CrateType {

branches/try/src/librustc/session/mod.rs

@@ -272,6 +272,9 @@ impl Session {
     pub fn print_enum_sizes(&self) -> bool {
         self.opts.debugging_opts.print_enum_sizes
     }
+    pub fn nonzeroing_move_hints(&self) -> bool {
+        !self.opts.debugging_opts.disable_nonzeroing_move_hints
+    }
     pub fn sysroot<'a>(&'a self) -> &'a Path {
         match self.opts.maybe_sysroot {
             Some (ref sysroot) => sysroot,