Don’t eliminate frame pointers on apple by default

src/librustc_target/spec/apple_ios_base.rs

@@ -98,6 +98,7 @@ pub fn opts(arch: Arch) -> Result<TargetOptions, String> {
         executables: true,
         pre_link_args,
         has_elf_tls: false,
+        eliminate_frame_pointer: false,
         // The following line is a workaround for jemalloc 4.5 being broken on
         // ios. jemalloc 5.0 is supposed to fix this.
         // see https://github.com/rust-lang/rust/issues/45262

src/librustc_target/spec/i686_apple_darwin.rs

@@ -16,6 +16,7 @@ pub fn target() -> TargetResult {
     base.max_atomic_width = Some(64);
     base.pre_link_args.insert(LinkerFlavor::Gcc, vec!["-m32".to_string()]);
     base.stack_probes = true;
+    base.eliminate_frame_pointer = false;
 
     Ok(Target {
         llvm_target: "i686-apple-darwin".to_string(),