Fix panic-entry matching and disable-pqp unused-features lint

Author: LegNeato

crates/rustc_codegen_spirv/src/codegen_cx/declare.rs

@@ -228,11 +228,16 @@ impl<'tcx> CodegenCx<'tcx> {
         {
             self.panic_entry_points.borrow_mut().insert(def_id);
         }
-        let is_nonlocal_core = !def_id.is_local() && self.tcx.crate_name(def_id.krate) == sym::core;
+        let is_nonlocal = !def_id.is_local();
+        let is_nonlocal_core = is_nonlocal && self.tcx.crate_name(def_id.krate) == sym::core;
         if is_nonlocal_core && demangled_symbol_name.ends_with("::precondition_check") {
             self.panic_entry_points.borrow_mut().insert(def_id);
         }
-        if is_nonlocal_core && demangled_symbol_name.ends_with("::bounds_check") {
+        let is_spirv_std_byte_addressable_bounds_check =
+            is_nonlocal && self.tcx.def_path_str(def_id) == "spirv_std::byte_addressable_buffer::bounds_check";
+        if (is_nonlocal_core && demangled_symbol_name.ends_with("::bounds_check"))
+            || is_spirv_std_byte_addressable_bounds_check
+        {
             self.panic_entry_points.borrow_mut().insert(def_id);
         }
         if let Some(pieces_len) = demangled_symbol_name

crates/rustc_codegen_spirv/src/lib.rs

@@ -9,6 +9,7 @@
 #![feature(string_from_utf8_lossy_owned)]
 #![feature(trait_alias)]
 #![feature(try_blocks)]
+#![cfg_attr(rustc_codegen_spirv_disable_pqp_cg_ssa, allow(unused_features))]
 #![recursion_limit = "256"]
 // HACK(eddyb) end of `rustc_codegen_ssa` crate-level attributes (see `build.rs`).