Removes fields from CrateInfo that are no longer used.

Author: dianqk

compiler/rustc_codegen_ssa/src/base.rs

@@ -848,7 +848,6 @@ impl CrateInfo {
             local_crate_name,
             compiler_builtins,
             profiler_runtime: None,
-            is_no_builtins: Default::default(),
             native_libraries: Default::default(),
             used_libraries: tcx.native_libraries(LOCAL_CRATE).iter().map(Into::into).collect(),
             crate_name: Default::default(),
@@ -875,9 +874,6 @@ impl CrateInfo {
             if tcx.is_profiler_runtime(cnum) {
                 info.profiler_runtime = Some(cnum);
             }
-            if tcx.is_no_builtins(cnum) {
-                info.is_no_builtins.insert(cnum);
-            }
         }
 
         // Handle circular dependencies in the standard library.

compiler/rustc_codegen_ssa/src/lib.rs

@@ -25,7 +25,7 @@ extern crate tracing;
 extern crate rustc_middle;
 
 use rustc_ast as ast;
-use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync::Lrc;
 use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage};
 use rustc_fluent_macro::fluent_messages;
@@ -158,7 +158,6 @@ pub struct CrateInfo {
     pub local_crate_name: Symbol,
     pub compiler_builtins: Option<CrateNum>,
     pub profiler_runtime: Option<CrateNum>,
-    pub is_no_builtins: FxHashSet<CrateNum>,
     pub native_libraries: FxHashMap<CrateNum, Vec<NativeLib>>,
     pub crate_name: FxHashMap<CrateNum, Symbol>,
     pub used_libraries: Vec<NativeLib>,