From 001640507374be965d1bfc3def758752464a474f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20Mi=C4=85sko?= <tomasz.miasko@gmail.com>
Date: Wed, 9 Sep 2020 00:00:00 +0000
Subject: [PATCH] Remove unused PlaceContext::NonUse(NonUseContext::Coverage)

---
 compiler/rustc_middle/src/mir/visit.rs               | 2 --
 compiler/rustc_mir/src/borrow_check/def_use.rs       | 3 +--
 compiler/rustc_mir/src/dataflow/impls/init_locals.rs | 1 -
 3 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/compiler/rustc_middle/src/mir/visit.rs b/compiler/rustc_middle/src/mir/visit.rs
index 6515ae31b46..a008bd5f75f 100644
--- a/compiler/rustc_middle/src/mir/visit.rs
+++ b/compiler/rustc_middle/src/mir/visit.rs
@@ -1150,8 +1150,6 @@ pub enum NonUseContext {
     StorageDead,
     /// User type annotation assertions for NLL.
     AscribeUserTy,
-    /// Coverage code region and counter metadata.
-    Coverage,
     /// The data of an user variable, for debug info.
     VarDebugInfo,
 }
diff --git a/compiler/rustc_mir/src/borrow_check/def_use.rs b/compiler/rustc_mir/src/borrow_check/def_use.rs
index 6574e584406..689ec249a2f 100644
--- a/compiler/rustc_mir/src/borrow_check/def_use.rs
+++ b/compiler/rustc_mir/src/borrow_check/def_use.rs
@@ -72,8 +72,7 @@ pub fn categorize(context: PlaceContext) -> Option<DefUse> {
         PlaceContext::MutatingUse(MutatingUseContext::Drop) =>
             Some(DefUse::Drop),
 
-        // Coverage and debug info are neither def nor use.
-        PlaceContext::NonUse(NonUseContext::Coverage) |
+        // Debug info is neither def nor use.
         PlaceContext::NonUse(NonUseContext::VarDebugInfo) => None,
     }
 }
diff --git a/compiler/rustc_mir/src/dataflow/impls/init_locals.rs b/compiler/rustc_mir/src/dataflow/impls/init_locals.rs
index 5da302cd1fd..bb7292cd033 100644
--- a/compiler/rustc_mir/src/dataflow/impls/init_locals.rs
+++ b/compiler/rustc_mir/src/dataflow/impls/init_locals.rs
@@ -97,7 +97,6 @@ fn visit_local(&mut self, &local: &Local, context: PlaceContext, _: Location) {
             PlaceContext::NonUse(
                 NonUseContext::StorageLive
                 | NonUseContext::AscribeUserTy
-                | NonUseContext::Coverage
                 | NonUseContext::VarDebugInfo,
             )
             | PlaceContext::NonMutatingUse(