Remove unused target_cpu and tune_cpu methods from ExtraBackendMethods

3 files changed, 0 insertions, 17 deletions

diff --git a/compiler/rustc_codegen_gcc/src/lib.rs b/compiler/rustc_codegen_gcc/src/lib.rs
index a70ed8084a9..accd02ab002 100644
--- a/compiler/rustc_codegen_gcc/src/lib.rs
+++ b/compiler/rustc_codegen_gcc/src/lib.rs
@@ -171,15 +171,6 @@ impl ExtraBackendMethods for GccCodegenBackend {
             Ok(())
         })
     }
-
-    fn target_cpu<'b>(&self, _sess: &'b Session) -> &'b str {
-        unimplemented!();
-    }
-
-    fn tune_cpu<'b>(&self, _sess: &'b Session) -> Option<&'b str> {
-        None
-        // TODO(antoyo)
-    }
 }
 
 pub struct ModuleBuffer;
diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs
index be37dd3683b..89c7e51d09e 100644
--- a/compiler/rustc_codegen_llvm/src/lib.rs
+++ b/compiler/rustc_codegen_llvm/src/lib.rs
@@ -131,12 +131,6 @@ impl ExtraBackendMethods for LlvmCodegenBackend {
     ) -> TargetMachineFactoryFn<Self> {
         back::write::target_machine_factory(sess, optlvl, target_features)
     }
-    fn target_cpu<'b>(&self, sess: &'b Session) -> &'b str {
-        llvm_util::target_cpu(sess)
-    }
-    fn tune_cpu<'b>(&self, sess: &'b Session) -> Option<&'b str> {
-        llvm_util::tune_cpu(sess)
-    }
 
     fn spawn_thread<F, T>(time_trace: bool, f: F) -> std::thread::JoinHandle<T>
     where
diff --git a/compiler/rustc_codegen_ssa/src/traits/backend.rs b/compiler/rustc_codegen_ssa/src/traits/backend.rs
index 779bd3ea278..87e347c61e2 100644
--- a/compiler/rustc_codegen_ssa/src/traits/backend.rs
+++ b/compiler/rustc_codegen_ssa/src/traits/backend.rs
@@ -134,8 +134,6 @@ pub trait ExtraBackendMethods: CodegenBackend + WriteBackendMethods + Sized + Se
         opt_level: config::OptLevel,
         target_features: &[String],
     ) -> TargetMachineFactoryFn<Self>;
-    fn target_cpu<'b>(&self, sess: &'b Session) -> &'b str;
-    fn tune_cpu<'b>(&self, sess: &'b Session) -> Option<&'b str>;
 
     fn spawn_thread<F, T>(_time_trace: bool, f: F) -> std::thread::JoinHandle<T>
     where