[PATCH] D153303: [llvm-profdata] Fix llvm-profdata help and make sure it remains in sync

[serge via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGf6be0814c3a5: [llvm-profdata] Fix llvm-profdata help and make sure it remains in sync (authored by serge-sans-paille).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D153303/new/

https://reviews.llvm.org/D153303

Files:
  llvm/include/llvm/ADT/STLExtras.h
  llvm/tools/llvm-profdata/llvm-profdata.cpp


Index: llvm/tools/llvm-profdata/llvm-profdata.cpp
===================================================================
--- llvm/tools/llvm-profdata/llvm-profdata.cpp
+++ llvm/tools/llvm-profdata/llvm-profdata.cpp
@@ -3084,6 +3084,16 @@
   return 0;
 }
 
+typedef int (*llvm_profdata_subcommand)(int, const char *[]);
+
+static std::tuple<StringRef, llvm_profdata_subcommand>
+    llvm_profdata_subcommands[] = {
+        {"merge", merge_main},
+        {"show", show_main},
+        {"order", order_main},
+        {"overlap", overlap_main},
+};
+
 int llvm_profdata_main(int argc, char **argvNonConst,
                        const llvm::ToolContext &) {
   const char **argv = const_cast<const char **>(argvNonConst);
@@ -3091,16 +3101,11 @@
 
   StringRef ProgName(sys::path::filename(argv[0]));
   if (argc > 1) {
-    int (*func)(int, const char *[]) = nullptr;
 
-    if (strcmp(argv[1], "merge") == 0)
-      func = merge_main;
-    else if (strcmp(argv[1], "show") == 0)
-      func = show_main;
-    else if (strcmp(argv[1], "overlap") == 0)
-      func = overlap_main;
-    else if (strcmp(argv[1], "order") == 0)
-      func = order_main;
+    llvm_profdata_subcommand func = nullptr;
+    for (auto [subcmd_name, subcmd_action] : llvm_profdata_subcommands)
+      if (subcmd_name == argv[1])
+        func = subcmd_action;
 
     if (func) {
       std::string Invocation(ProgName.str() + " " + argv[1]);
@@ -3115,7 +3120,11 @@
              << "USAGE: " << ProgName << " <command> [args...]\n"
              << "USAGE: " << ProgName << " <command> -help\n\n"
              << "See each individual command --help for more details.\n"
-             << "Available commands: merge, show, overlap\n";
+             << "Available commands: "
+             << join(map_range(llvm_profdata_subcommands,
+                               [](auto const &KV) { return std::get<0>(KV); }),
+                     ", ")
+             << "\n";
       return 0;
     }
 
@@ -3131,6 +3140,10 @@
   else
     errs() << ProgName << ": Unknown command!\n";
 
-  errs() << "USAGE: " << ProgName << " <merge|show|overlap|order> [args...]\n";
+  errs() << "USAGE: " << ProgName << " <"
+         << join(map_range(llvm_profdata_subcommands,
+                           [](auto const &KV) { return std::get<0>(KV); }),
+                 "|")
+         << "> [args...]\n";
   return 1;
 }
Index: llvm/include/llvm/ADT/STLExtras.h
===================================================================
--- llvm/include/llvm/ADT/STLExtras.h
+++ llvm/include/llvm/ADT/STLExtras.h
@@ -459,7 +459,8 @@
 
 template <class ContainerTy, class FuncTy>
 auto map_range(ContainerTy &&C, FuncTy F) {
-  return make_range(map_iterator(C.begin(), F), map_iterator(C.end(), F));
+  return make_range(map_iterator(std::begin(C), F),
+                    map_iterator(std::end(C), F));
 }
 
 /// A base type of mapped iterator, that is useful for building derived


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