Rewrite the pattern matching code in trans.

The old code was not well structured, difficult to understand, and buggy. The new implementation is completely naive, so there may be a slight runtime performance loss. That said, adding optimizations on top of a clear and correct implementation seems easier than trying to fix the old mess. Fixes issue rust-lang#19064. Fixes issue rust-lang#26989. Fixes issue rust-lang#26251. Fixes issue rust-lang#18060. Fixes issue rust-lang#24875. Fixes issue rust-lang#23311. Fixes issue rust-lang#20046.
eefriedman · Jul 15, 2015 · f9bbe4d · f9bbe4d
1 parent 6800538
commit f9bbe4d
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diff --git a/src/librustc_trans/lib.rs b/src/librustc_trans/lib.rs
@@ -29,7 +29,6 @@
 #![feature(box_syntax)]
 #![feature(const_fn)]
 #![feature(iter_cmp)]
-#![feature(iter_arith)]
 #![feature(libc)]
 #![feature(path_ext)]
 #![feature(path_ext)]