Remove unused TyCtxt from remove_dead_blocks

This context was only needed by code for processing coverage statements, which
has been removed.

compiler/rustc_mir_transform/src/abort_unwinding_calls.rs

@@ -113,6 +113,6 @@ impl<'tcx> MirPass<'tcx> for AbortUnwindingCalls {
         }
 
         // We may have invalidated some `cleanup` blocks so clean those up now.
-        super::simplify::remove_dead_blocks(tcx, body);
+        super::simplify::remove_dead_blocks(body);
     }
 }

compiler/rustc_mir_transform/src/dest_prop.rs

@@ -244,7 +244,7 @@ impl<'tcx> MirPass<'tcx> for DestinationPropagation {
         if round_count != 0 {
             // Merging can introduce overlap between moved arguments and/or call destination in an
             // unreachable code, which validator considers to be ill-formed.
-            remove_dead_blocks(tcx, body);
+            remove_dead_blocks(body);
         }
 
         trace!(round_count);

compiler/rustc_mir_transform/src/generator.rs

@@ -1088,7 +1088,7 @@ fn create_generator_drop_shim<'tcx>(
 
     // Make sure we remove dead blocks to remove
     // unrelated code from the resume part of the function
-    simplify::remove_dead_blocks(tcx, &mut body);
+    simplify::remove_dead_blocks(&mut body);
 
     // Update the body's def to become the drop glue.
     // This needs to be updated before the AbortUnwindingCalls pass.
@@ -1276,7 +1276,7 @@ fn create_generator_resume_function<'tcx>(
 
     // Make sure we remove dead blocks to remove
     // unrelated code from the drop part of the function
-    simplify::remove_dead_blocks(tcx, body);
+    simplify::remove_dead_blocks(body);
 
     pm::run_passes_no_validate(tcx, body, &[&abort_unwinding_calls::AbortUnwindingCalls], None);
 

compiler/rustc_mir_transform/src/inline.rs

@@ -63,7 +63,7 @@ impl<'tcx> MirPass<'tcx> for Inline {
         if inline(tcx, body) {
             debug!("running simplify cfg on {:?}", body.source);
             CfgSimplifier::new(body).simplify();
-            remove_dead_blocks(tcx, body);
+            remove_dead_blocks(body);
             deref_finder(tcx, body);
         }
     }

compiler/rustc_mir_transform/src/multiple_return_terminators.rs

@@ -38,6 +38,6 @@ impl<'tcx> MirPass<'tcx> for MultipleReturnTerminators {
             }
         }
 
-        simplify::remove_dead_blocks(tcx, body)
+        simplify::remove_dead_blocks(body)
     }
 }

compiler/rustc_mir_transform/src/simplify.rs

@@ -66,7 +66,7 @@ impl SimplifyCfg {
 pub fn simplify_cfg<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
     CfgSimplifier::new(body).simplify();
     remove_duplicate_unreachable_blocks(tcx, body);
-    remove_dead_blocks(tcx, body);
+    remove_dead_blocks(body);
 
     // FIXME: Should probably be moved into some kind of pass manager
     body.basic_blocks_mut().raw.shrink_to_fit();
@@ -335,7 +335,7 @@ pub fn remove_duplicate_unreachable_blocks<'tcx>(tcx: TyCtxt<'tcx>, body: &mut B
     }
 }
 
-pub fn remove_dead_blocks<'tcx>(_tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
+pub fn remove_dead_blocks(body: &mut Body<'_>) {
     let reachable = traversal::reachable_as_bitset(body);
     let num_blocks = body.basic_blocks.len();
     if num_blocks == reachable.count() {

compiler/rustc_mir_transform/src/unreachable_prop.rs

@@ -65,7 +65,7 @@ impl MirPass<'_> for UnreachablePropagation {
         }
 
         if replaced {
-            simplify::remove_dead_blocks(tcx, body);
+            simplify::remove_dead_blocks(body);
         }
     }
 }