Pass tune-cpu to LLVM

I think this is how it should work...
2020-09-17 17:39:26 +08:00
parent 285fc7d704
commit a35a93f09c
9 changed files with 80 additions and 8 deletions
--- a/compiler/rustc_codegen_ssa/src/traits/backend.rs
+++ b/compiler/rustc_codegen_ssa/src/traits/backend.rs
@@ -116,4 +116,5 @@ pub trait ExtraBackendMethods: CodegenBackend + WriteBackendMethods + Sized + Se
        opt_level: config::OptLevel,
    ) -> Arc<dyn Fn() -> Result<Self::TargetMachine, String> + Send + Sync>;
    fn target_cpu<'b>(&self, sess: &'b Session) -> &'b str;
+    fn tune_cpu<'b>(&self, sess: &'b Session) -> Option<&'b str>;
 }