Merge pull request rust-lang#118 from bjorn3/function_sections

Support -Zfunction-sections
bjorn3 · Jan 26, 2022 · b7bfb21 · b7bfb21
2 parents 5dc660b + 99941cd
commit b7bfb21
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/base.rs b/src/base.rs
@@ -85,6 +85,12 @@ pub fn compile_codegen_unit<'tcx>(tcx: TyCtxt<'tcx>, cgu_name: Symbol) -> (Modul
         context.add_command_line_option("-fno-semantic-interposition");
         // NOTE: Rust relies on LLVM not doing TBAA (https://github.com/rust-lang/unsafe-code-guidelines/issues/292).
         context.add_command_line_option("-fno-strict-aliasing");
+
+        if tcx.sess.opts.debugging_opts.function_sections.unwrap_or(tcx.sess.target.function_sections) {
+            context.add_command_line_option("-ffunction-sections");
+            context.add_command_line_option("-fdata-sections");
+        }
+
         if env::var("CG_GCCJIT_DUMP_CODE").as_deref() == Ok("1") {
             context.set_dump_code_on_compile(true);
         }