Move switch_sources from Body to BasicBlocks

Author: tmiasko

Diff for: compiler/rustc_middle/src/mir/mod.rs

@@ -41,7 +41,6 @@ use std::ops::{ControlFlow, Index, IndexMut};
 use std::{iter, mem};
 
 pub use self::query::*;
-use self::switch_sources::SwitchSources;
 pub use basic_blocks::BasicBlocks;
 
 mod basic_blocks;
@@ -446,13 +445,6 @@ impl<'tcx> Body<'tcx> {
             .unwrap_or_else(|| Either::Right(block_data.terminator()))
     }
 
-    /// `body.switch_sources()[&(target, switch)]` returns a list of switch
-    /// values that lead to a `target` block from a `switch` block.
-    #[inline]
-    pub fn switch_sources(&self) -> &SwitchSources {
-        self.basic_blocks.switch_sources()
-    }
-
     #[inline]
     pub fn dominators(&self) -> Dominators<BasicBlock> {
         dominators(&self.basic_blocks)

Diff for: compiler/rustc_mir_dataflow/src/framework/direction.rs

@@ -316,7 +316,7 @@ where
     fn apply(&mut self, mut apply_edge_effect: impl FnMut(&mut D, SwitchIntTarget)) {
         assert!(!self.effects_applied);
 
-        let values = &self.body.switch_sources()[&(self.bb, self.pred)];
+        let values = &self.body.basic_blocks.switch_sources()[&(self.bb, self.pred)];
         let targets = values.iter().map(|&value| SwitchIntTarget { value, target: self.bb });
 
         let mut tmp = None;