compiler(nfc): -Cforce-frame-pointers is a FramePointer

compiler/rustc_codegen_llvm/src/attributes.rs

@@ -108,9 +108,10 @@ pub fn frame_pointer_type_attr<'ll>(cx: &CodegenCx<'ll, '_>) -> Option<&'ll Attr
     let opts = &cx.sess().opts;
     // "mcount" function relies on stack pointer.
     // See <https://sourceware.org/binutils/docs/gprof/Implementation.html>.
-    if opts.unstable_opts.instrument_mcount || matches!(opts.cg.force_frame_pointers, Some(true)) {
+    if opts.unstable_opts.instrument_mcount {
-        fp = FramePointer::Always;
+        fp.ratchet(FramePointer::Always);
     }
+    fp.ratchet(opts.cg.force_frame_pointers);
     let attr_value = match fp {
         FramePointer::Always => "all",
         FramePointer::NonLeaf => "non-leaf",

compiler/rustc_interface/src/tests.rs

@@ -20,9 +20,9 @@
 use rustc_span::symbol::sym;
 use rustc_span::{FileName, SourceFileHashAlgorithm};
 use rustc_target::spec::{
-    CodeModel, LinkerFlavorCli, MergeFunctions, OnBrokenPipe, PanicStrategy, RelocModel, WasmCAbi,
+    CodeModel, FramePointer, LinkerFlavorCli, MergeFunctions, OnBrokenPipe, PanicStrategy,
+    RelocModel, RelroLevel, SanitizerSet, SplitDebuginfo, StackProtector, TlsModel, WasmCAbi,
 };
-use rustc_target::spec::{RelroLevel, SanitizerSet, SplitDebuginfo, StackProtector, TlsModel};
 use std::collections::{BTreeMap, BTreeSet};
 use std::num::NonZero;
 use std::path::{Path, PathBuf};
@@ -605,7 +605,7 @@ macro_rules! tracked {
     tracked!(debug_assertions, Some(true));
     tracked!(debuginfo, DebugInfo::Limited);
     tracked!(embed_bitcode, false);
-    tracked!(force_frame_pointers, Some(false));
+    tracked!(force_frame_pointers, FramePointer::Always);
     tracked!(force_unwind_tables, Some(true));
     tracked!(inline_threshold, Some(0xf007ba11));
     tracked!(instrument_coverage, InstrumentCoverage::Yes);

compiler/rustc_session/src/config.rs

@@ -2966,10 +2966,8 @@ pub(crate) mod dep_tracking {
     use rustc_span::edition::Edition;
     use rustc_span::RealFileName;
     use rustc_target::spec::{
-        CodeModel, MergeFunctions, OnBrokenPipe, PanicStrategy, RelocModel, WasmCAbi,
+        CodeModel, FramePointer, MergeFunctions, OnBrokenPipe, PanicStrategy, RelocModel,
-    };
+        RelroLevel, SanitizerSet, SplitDebuginfo, StackProtector, TargetTriple, TlsModel, WasmCAbi,
-    use rustc_target::spec::{
-        RelroLevel, SanitizerSet, SplitDebuginfo, StackProtector, TargetTriple, TlsModel,
     };
     use std::collections::BTreeMap;
     use std::hash::{DefaultHasher, Hash};
@@ -3023,6 +3021,7 @@ fn hash(
         lint::Level,
         WasiExecModel,
         u32,
+        FramePointer,
         RelocModel,
         CodeModel,
         TlsModel,

compiler/rustc_session/src/options.rs

@@ -12,10 +12,9 @@
 use rustc_span::RealFileName;
 use rustc_span::SourceFileHashAlgorithm;
 use rustc_target::spec::{
-    CodeModel, LinkerFlavorCli, MergeFunctions, OnBrokenPipe, PanicStrategy, SanitizerSet, WasmCAbi,
+    CodeModel, FramePointer, LinkerFlavorCli, MergeFunctions, OnBrokenPipe, PanicStrategy,
-};
+    RelocModel, RelroLevel, SanitizerSet, SplitDebuginfo, StackProtector, TargetTriple, TlsModel,
-use rustc_target::spec::{
+    WasmCAbi,
-    RelocModel, RelroLevel, SplitDebuginfo, StackProtector, TargetTriple, TlsModel,
 };
 use std::collections::BTreeMap;
 use std::hash::{DefaultHasher, Hasher};
@@ -374,6 +373,7 @@ mod desc {
     pub const parse_opt_comma_list: &str = parse_comma_list;
     pub const parse_number: &str = "a number";
     pub const parse_opt_number: &str = parse_number;
+    pub const parse_frame_pointer: &str = parse_bool;
     pub const parse_threads: &str = parse_number;
     pub const parse_time_passes_format: &str = "`text` (default) or `json`";
     pub const parse_passes: &str = "a space-separated list of passes, or `all`";
@@ -672,6 +672,18 @@ pub(crate) fn parse_opt_number<T: Copy + FromStr>(
         }
     }
 
+    pub(crate) fn parse_frame_pointer(slot: &mut FramePointer, v: Option<&str>) -> bool {
+        let mut boolish = false;
+        let mut is_parsed = parse_bool(&mut boolish, v);
+        if boolish & is_parsed {
+            *slot = FramePointer::Always;
+        } else if false {
+            /* TODO: add NonLeaf as an unstable opt */
+            is_parsed = true;
+        };
+        is_parsed
+    }
+
     pub(crate) fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
         match v {
             Some("all") => {
@@ -1479,7 +1491,7 @@ pub(crate) fn parse_wasm_c_abi(slot: &mut WasmCAbi, v: Option<&str>) -> bool {
         "emit bitcode in rlibs (default: yes)"),
     extra_filename: String = (String::new(), parse_string, [UNTRACKED],
         "extra data to put in each output filename"),
-    force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
+    force_frame_pointers: FramePointer = (FramePointer::MayOmit, parse_frame_pointer, [TRACKED],
         "force use of the frame pointers"),
     #[rustc_lint_opt_deny_field_access("use `Session::must_emit_unwind_tables` instead of this field")]
     force_unwind_tables: Option<bool> = (None, parse_opt_bool, [TRACKED],