change thir to lazily create constants

[rust.git] / compiler / rustc_mir_build / src / lib.rs

diff --git a/compiler/rustc_mir_build/src/lib.rs b/compiler/rustc_mir_build/src/lib.rs
index 9dea67e176266bdcebe673eaa5118a607268a752..5b9f3020556772128d83f76cdc003322716a9f3d 100644 (file)
--- a/compiler/rustc_mir_build/src/lib.rs
+++ b/compiler/rustc_mir_build/src/lib.rs
@@ -1,15 +1,16 @@
 //! Construction of MIR from HIR.
 //!
 //! This crate also contains the match exhaustiveness and usefulness checking.
+#![allow(rustc::potential_query_instability)]
+#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(crate_visibility_modifier)]
-#![feature(bool_to_option)]
+#![feature(let_chains)]
 #![feature(let_else)]
-#![feature(once_cell)]
 #![feature(min_specialization)]
+#![feature(once_cell)]
 #![recursion_limit = "256"]
-#![allow(rustc::potential_query_instability)]
 
 #[macro_use]
 extern crate tracing;
@@ -26,6 +27,7 @@
 pub fn provide(providers: &mut Providers) {
     providers.check_match = thir::pattern::check_match;
     providers.lit_to_const = thir::constant::lit_to_const;
+    providers.lit_to_constant = build::as_constant::lit_to_constant;
     providers.mir_built = build::mir_built;
     providers.thir_check_unsafety = check_unsafety::thir_check_unsafety;
     providers.thir_check_unsafety_for_const_arg = check_unsafety::thir_check_unsafety_for_const_arg;