From a54683ba2f68f38917868a1287c6d748d2c25799 Mon Sep 17 00:00:00 2001
From: Adrian Palacios <accorell@amazon.com>
Date: Mon, 11 Mar 2024 17:26:56 +0000
Subject: [PATCH] Use exhaustive `match` to filter

---
 compiler/rustc_smir/src/rustc_smir/context.rs | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/compiler/rustc_smir/src/rustc_smir/context.rs b/compiler/rustc_smir/src/rustc_smir/context.rs
index eb9138f614d74..ea3494264fad1 100644
--- a/compiler/rustc_smir/src/rustc_smir/context.rs
+++ b/compiler/rustc_smir/src/rustc_smir/context.rs
@@ -591,13 +591,23 @@ impl<'tcx> Context for TablesWrapper<'tcx> {
     fn intrinsic_name(&self, def: InstanceDef) -> Option<Symbol> {
         let tables = self.0.borrow_mut();
         let instance = tables.instances[def];
-        if !(matches!(instance.def, ty::InstanceDef::Intrinsic(..))
-            || matches!(instance.def, ty::InstanceDef::Item(..)))
-        {
-            return None;
+        match instance.def {
+            ty::InstanceDef::Intrinsic(..) | ty::InstanceDef::Item(..) => {
+                let intrinsic = tables.tcx.intrinsic(instance.def_id())?;
+                Some(intrinsic.name.to_string())
+            }
+            ty::InstanceDef::VTableShim(..)
+            | ty::InstanceDef::ReifyShim(..)
+            | ty::InstanceDef::Virtual(..)
+            | ty::InstanceDef::ThreadLocalShim(..)
+            | ty::InstanceDef::ClosureOnceShim { .. }
+            | ty::InstanceDef::ConstructCoroutineInClosureShim { .. }
+            | ty::InstanceDef::CoroutineKindShim { .. }
+            | ty::InstanceDef::DropGlue(..)
+            | ty::InstanceDef::FnPtrShim(..)
+            | ty::InstanceDef::CloneShim(..)
+            | ty::InstanceDef::FnPtrAddrShim(..) => None,
         }
-        let intrinsic = tables.tcx.intrinsic(instance.def_id())?;
-        Some(intrinsic.name.to_string())
     }
 
     fn ty_layout(&self, ty: Ty) -> Result<Layout, Error> {