Add comment explanining unstable_target_features

2023-08-02 19:21:19 +01:00 · 2023-08-02 19:21:19 +01:00 · 5ed556e84a
commit 5ed556e84a
parent aaf1b1bc93
1 changed files with 1 additions and 0 deletions
--- a/compiler/rustc_codegen_ssa/src/back/metadata.rs
+++ b/compiler/rustc_codegen_ssa/src/back/metadata.rs
@ -275,6 +275,7 @@ pub(crate) fn create_object_file(sess: &Session) -> Option<write::Object<'static
            let mut e_flags: u32 = 0x0;

            // Check if compressed is enabled
+            // `unstable_target_features` is used here because "c" is gated behind riscv_target_feature.
            if sess.unstable_target_features.contains(&sym::c) {
                e_flags |= elf::EF_RISCV_RVC;
            }