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-rw-r--r--src/librustc/session/config.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
index 0dcd3e80810..e6138b34c80 100644
--- a/src/librustc/session/config.rs
+++ b/src/librustc/session/config.rs
@@ -1141,6 +1141,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
           "print some statistics about MIR"),
     always_encode_mir: bool = (false, parse_bool, [TRACKED],
           "encode MIR of all functions into the crate metadata"),
+    miri: bool = (false, parse_bool, [TRACKED],
+          "check the miri const evaluator against the old ctfe"),
     osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
           "pass `-install_name @rpath/...` to the macOS linker"),
     sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],