Inline dominator check.

compiler/rustc_data_structures/src/graph/dominators/mod.rs

@@ -394,6 +394,7 @@ impl<Node: Idx> Dominators<Node> {
     /// # Panics
     ///
     /// Panics if `b` is unreachable.
+    #[inline]
     pub fn dominates(&self, a: Node, b: Node) -> bool {
         match &self.kind {
             Kind::Path => a.index() <= b.index(),

compiler/rustc_middle/src/mir/mod.rs

@@ -1604,6 +1604,7 @@ impl Location {
         false
     }
 
+    #[inline]
     pub fn dominates(&self, other: Location, dominators: &Dominators<BasicBlock>) -> bool {
         if self.block == other.block {
             self.statement_index <= other.statement_index
@@ -1623,6 +1624,7 @@ pub enum DefLocation {
 }
 
 impl DefLocation {
+    #[inline]
     pub fn dominates(self, location: Location, dominators: &Dominators<BasicBlock>) -> bool {
         match self {
             DefLocation::Argument => true,

compiler/rustc_mir_transform/src/ssa.rs

@@ -94,6 +94,7 @@ impl SsaLocals {
         self.direct_uses[local]
     }
 
+    #[inline]
     pub fn assignment_dominates(
         &self,
         dominators: &Dominators<BasicBlock>,