[lld] [lld][ELF][MachO] rename to bp-* options for SectionOrderer (PR #118594)

[Ellis Hoag via llvm-commits]

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@@ -126,17 +126,17 @@ def no_call_graph_profile_sort : Flag<["--"], "no-call-graph-profile-sort">,
 def print_symbol_order_eq: Joined<["--"], "print-symbol-order=">,
     HelpText<"Print a symbol order specified by --call-graph-profile-sort into the specified file">,
     Group<grp_lld>;
-def irpgo_profile_sort: Separate<["--"], "irpgo-profile-sort">, Group<grp_lld>;
-def irpgo_profile_sort_eq: Joined<["--"], "irpgo-profile-sort=">,
-    Alias<!cast<Separate>(irpgo_profile_sort)>, MetaVarName<"<profile>">,
+def irpgo_profile: Separate<["--"], "irpgo-profile">, Group<grp_lld>;
+def irpgo_profile_eq: Joined<["--"], "irpgo-profile=">,
+    Alias<!cast<Separate>(irpgo_profile)>, MetaVarName<"<profile>">,
     HelpText<"Read the IRPGO profile at <profile> to order sections to improve startup time">,
     Group<grp_lld>;
-def compression_sort_startup_functions: Flag<["--"], "compression-sort-startup-functions">,
+def bp_compression_sort_startup_functions: Flag<["--"], "bp-compression-sort-startup-functions">,
----------------
ellishg wrote:

We should add an alias for the old spellings to avoid making this a breaking change. We can clean up these old spellings later.
```suggestion
def compression_sort_startup_functions: Flag<["--"], "compression-sort-startup-functions">,
  Alias<!cast<Flag>(bp_compression_sort_startup_functions)>, HelpText<"Deprecated. Please use --bp-compression-sort-startup-functions">;
def bp_compression_sort_startup_functions: Flag<["--"], "bp-compression-sort-startup-functions">,
```

https://github.com/llvm/llvm-project/pull/118594