Move print_pass_timings and print_statistics calls to rustc_interface

compiler/rustc_codegen_gcc/src/lib.rs

@@ -455,14 +455,6 @@ fn run_thin_lto(
         unreachable!()
     }
 
-    fn print_pass_timings(&self) {
-        unimplemented!();
-    }
-
-    fn print_statistics(&self) {
-        unimplemented!()
-    }
-
     fn optimize(
         _cgcx: &CodegenContext,
         _prof: &SelfProfilerRef,

compiler/rustc_codegen_llvm/src/lib.rs

@@ -135,14 +135,6 @@ impl WriteBackendMethods for LlvmCodegenBackend {
     type ModuleBuffer = back::lto::ModuleBuffer;
     type TargetMachine = OwnedTargetMachine;
     type ThinData = back::lto::ThinData;
-    fn print_pass_timings(&self) {
-        let timings = llvm::build_string(|s| unsafe { llvm::LLVMRustPrintPassTimings(s) }).unwrap();
-        print!("{timings}");
-    }
-    fn print_statistics(&self) {
-        let stats = llvm::build_string(|s| unsafe { llvm::LLVMRustPrintStatistics(s) }).unwrap();
-        print!("{stats}");
-    }
     fn run_and_optimize_fat_lto(
         cgcx: &CodegenContext,
         prof: &SelfProfilerRef,
@@ -371,6 +363,16 @@ fn join_codegen(
         (compiled_modules, work_products)
     }
 
+    fn print_pass_timings(&self) {
+        let timings = llvm::build_string(|s| unsafe { llvm::LLVMRustPrintPassTimings(s) }).unwrap();
+        print!("{timings}");
+    }
+
+    fn print_statistics(&self) {
+        let stats = llvm::build_string(|s| unsafe { llvm::LLVMRustPrintStatistics(s) }).unwrap();
+        print!("{stats}");
+    }
+
     fn link(
         &self,
         sess: &Session,

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -2243,16 +2243,6 @@ pub fn join(self, sess: &Session) -> (CompiledModules, FxIndexMap<WorkProductId,
             copy_all_cgu_workproducts_to_incr_comp_cache_dir(sess, &compiled_modules);
         produce_final_output_artifacts(sess, &compiled_modules, &self.output_filenames);
 
-        // FIXME: time_llvm_passes support - does this use a global context or
-        // something?
-        if sess.codegen_units().as_usize() == 1 && sess.opts.unstable_opts.time_llvm_passes {
-            self.backend.print_pass_timings()
-        }
-
-        if sess.print_llvm_stats() {
-            self.backend.print_statistics()
-        }
-
         (compiled_modules, work_products)
     }
 

compiler/rustc_codegen_ssa/src/traits/backend.rs

@@ -119,6 +119,10 @@ fn join_codegen(
         outputs: &OutputFilenames,
     ) -> (CompiledModules, FxIndexMap<WorkProductId, WorkProduct>);
 
+    fn print_pass_timings(&self) {}
+
+    fn print_statistics(&self) {}
+
     /// This is called on the returned [`CompiledModules`] from [`join_codegen`](Self::join_codegen).
     fn link(
         &self,

compiler/rustc_codegen_ssa/src/traits/write.rs

@@ -39,8 +39,6 @@ fn run_thin_lto(
         modules: Vec<(String, Self::ModuleBuffer)>,
         cached_modules: Vec<(SerializedModule<Self::ModuleBuffer>, WorkProduct)>,
     ) -> (Vec<ThinModule<Self>>, Vec<WorkProduct>);
-    fn print_pass_timings(&self);
-    fn print_statistics(&self);
     fn optimize(
         cgcx: &CodegenContext,
         prof: &SelfProfilerRef,

compiler/rustc_interface/src/queries.rs

@@ -58,6 +58,15 @@ pub fn link(self, sess: &Session, codegen_backend: &dyn CodegenBackend) {
                 }
             }
         });
+
+        if sess.codegen_units().as_usize() == 1 && sess.opts.unstable_opts.time_llvm_passes {
+            codegen_backend.print_pass_timings()
+        }
+
+        if sess.print_llvm_stats() {
+            codegen_backend.print_statistics()
+        }
+
         sess.timings.end_section(sess.dcx(), TimingSection::Codegen);
 
         if sess.opts.incremental.is_some()