Rename debugging_opts to unstable_opts

This is no longer used only for debugging options (e.g. `-Zoutput-width`, `-Zallow-features`).
Rename it to be more clear.

Author: jyn514

compiler/rustc_ast_lowering/src/lib.rs

@@ -427,7 +427,7 @@ pub fn lower_to_hir<'hir>(tcx: TyCtxt<'hir>, (): ()) -> hir::Crate<'hir> {
     sess.time("drop_ast", || std::mem::drop(krate));
 
     // Discard hygiene data, which isn't required after lowering to HIR.
-    if !sess.opts.debugging_opts.keep_hygiene_data {
+    if !sess.opts.unstable_opts.keep_hygiene_data {
         rustc_span::hygiene::clear_syntax_context_map();
     }
 
@@ -699,7 +699,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
     /// Intercept all spans entering HIR.
     /// Mark a span as relative to the current owning item.
     fn lower_span(&self, span: Span) -> Span {
-        if self.tcx.sess.opts.debugging_opts.incremental_relative_spans {
+        if self.tcx.sess.opts.unstable_opts.incremental_relative_spans {
             span.with_parent(Some(self.current_hir_id_owner))
         } else {
             // Do not make spans relative when not using incremental compilation.

compiler/rustc_borrowck/src/facts.rs

@@ -40,7 +40,7 @@ pub(crate) trait AllFactsExt {
 impl AllFactsExt for AllFacts {
     /// Return
     fn enabled(tcx: TyCtxt<'_>) -> bool {
-        tcx.sess.opts.debugging_opts.nll_facts || tcx.sess.opts.debugging_opts.polonius
+        tcx.sess.opts.unstable_opts.nll_facts || tcx.sess.opts.unstable_opts.polonius
     }
 
     fn write_to_dir(

compiler/rustc_borrowck/src/lib.rs

@@ -231,7 +231,7 @@ fn do_mir_borrowck<'a, 'tcx>(
     let borrow_set =
         Rc::new(BorrowSet::build(tcx, body, locals_are_invalidated_at_exit, &mdpe.move_data));
 
-    let use_polonius = return_body_with_facts || infcx.tcx.sess.opts.debugging_opts.polonius;
+    let use_polonius = return_body_with_facts || infcx.tcx.sess.opts.unstable_opts.polonius;
 
     // Compute non-lexical lifetimes.
     let nll::NllOutput {

compiler/rustc_borrowck/src/nll.rs

@@ -278,9 +278,9 @@ pub(crate) fn compute_regions<'cx, 'tcx>(
 
     // Dump facts if requested.
     let polonius_output = all_facts.as_ref().and_then(|all_facts| {
-        if infcx.tcx.sess.opts.debugging_opts.nll_facts {
+        if infcx.tcx.sess.opts.unstable_opts.nll_facts {
             let def_path = infcx.tcx.def_path(def_id);
-            let dir_path = PathBuf::from(&infcx.tcx.sess.opts.debugging_opts.nll_facts_dir)
+            let dir_path = PathBuf::from(&infcx.tcx.sess.opts.unstable_opts.nll_facts_dir)
                 .join(def_path.to_filename_friendly_no_crate());
             all_facts.write_to_dir(dir_path, location_table).unwrap();
         }

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -589,7 +589,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         // In Polonius mode, the errors about missing universal region relations are in the output
         // and need to be emitted or propagated. Otherwise, we need to check whether the
         // constraints were too strong, and if so, emit or propagate those errors.
-        if infcx.tcx.sess.opts.debugging_opts.polonius {
+        if infcx.tcx.sess.opts.unstable_opts.polonius {
             self.check_polonius_subset_errors(
                 body,
                 outlives_requirements.as_mut(),

compiler/rustc_builtin_macros/src/test_harness.rs

@@ -51,7 +51,7 @@ pub fn inject(sess: &Session, resolver: &mut dyn ResolverExpand, krate: &mut ast
     let test_runner = get_test_runner(sess, span_diagnostic, &krate);
 
     if sess.opts.test {
-        let panic_strategy = match (panic_strategy, sess.opts.debugging_opts.panic_abort_tests) {
+        let panic_strategy = match (panic_strategy, sess.opts.unstable_opts.panic_abort_tests) {
             (PanicStrategy::Abort, true) => PanicStrategy::Abort,
             (PanicStrategy::Abort, false) => {
                 if panic_strategy == platform_panic_strategy {

compiler/rustc_codegen_cranelift/src/allocator.rs

@@ -24,7 +24,7 @@ pub(crate) fn codegen(
             unwind_context,
             kind,
             tcx.lang_items().oom().is_some(),
-            tcx.sess.opts.debugging_opts.oom,
+            tcx.sess.opts.unstable_opts.oom,
         );
         true
     } else {

compiler/rustc_codegen_cranelift/src/cast.rs

@@ -144,7 +144,7 @@ pub(crate) fn clif_int_or_float_cast(
             fx.bcx.ins().fcvt_to_uint_sat(to_ty, from)
         };
 
-        if let Some(false) = fx.tcx.sess.opts.debugging_opts.saturating_float_casts {
+        if let Some(false) = fx.tcx.sess.opts.unstable_opts.saturating_float_casts {
             return val;
         }
 

compiler/rustc_codegen_cranelift/src/debuginfo/line_info.rs

@@ -140,7 +140,7 @@ impl<'tcx> DebugContext<'tcx> {
             // In order to have a good line stepping behavior in debugger, we overwrite debug
             // locations of macro expansions with that of the outermost expansion site
             // (unless the crate is being compiled with `-Z debug-macros`).
-            let span = if !span.from_expansion() || tcx.sess.opts.debugging_opts.debug_macros {
+            let span = if !span.from_expansion() || tcx.sess.opts.unstable_opts.debug_macros {
                 span
             } else {
                 // Walk up the macro expansion chain until we reach a non-expanded span.

compiler/rustc_codegen_cranelift/src/driver/aot.rs

@@ -33,7 +33,7 @@ fn make_module(sess: &Session, isa: Box<dyn TargetIsa>, name: String) -> ObjectM
     // Unlike cg_llvm, cg_clif defaults to disabling -Zfunction-sections. For cg_llvm binary size
     // is important, while cg_clif cares more about compilation times. Enabling -Zfunction-sections
     // can easily double the amount of time necessary to perform linking.
-    builder.per_function_section(sess.opts.debugging_opts.function_sections.unwrap_or(false));
+    builder.per_function_section(sess.opts.unstable_opts.function_sections.unwrap_or(false));
     ObjectModule::new(builder)
 }