Auto merge of rust-lang#36695 - arielb1:literal-match, r=eddyb

Refactor match checking to use HAIR Refactor match checking to use HAIR instead of HIR, fixing quite a few bugs in the process. r? @eddyb

Author: bors

src/Cargo.lock

@@ -9,11 +9,13 @@ path = "lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
+arena = { path = "../libarena" }
 log = { path = "../liblog" }
 serialize = { path = "../libserialize" }
 rustc = { path = "../librustc" }
 rustc_back = { path = "../librustc_back" }
 rustc_const_math = { path = "../librustc_const_math" }
+rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }
 syntax = { path = "../libsyntax" }
 graphviz = { path = "../libgraphviz" }