[PATCH] D128048: Add a new clang option "-ftime-trace-path"

[dongjunduo via Phabricator via cfe-commits]

dongjunduo updated this revision to Diff 438303.
dongjunduo marked an inline comment as done.
dongjunduo added a comment.

[Clang] change unclear help text pf "-ftime-trace-path"


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128048/new/

https://reviews.llvm.org/D128048

Files:
  clang/include/clang/Driver/Options.td
  clang/include/clang/Frontend/FrontendOptions.h
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/tools/driver/cc1_main.cpp


Index: clang/tools/driver/cc1_main.cpp
===================================================================
--- clang/tools/driver/cc1_main.cpp
+++ clang/tools/driver/cc1_main.cpp
@@ -255,7 +255,16 @@
 
   if (llvm::timeTraceProfilerEnabled()) {
     SmallString<128> Path(Clang->getFrontendOpts().OutputFile);
-    llvm::sys::path::replace_extension(Path, "json");
+    if (Clang->getFrontendOpts().TimeTracePath.empty()) {
+      // replace the suffix to '.json' directly
+      llvm::sys::path::replace_extension(Path, "json");
+    } else {
+      // change path prefix to the aim path, then add suffix '.json'
+      Path.assign(Clang->getFrontendOpts().TimeTracePath);
+      Path.append(
+          llvm::sys::path::filename(Clang->getFrontendOpts().OutputFile));
+      Path.append(".json");
+    }
     if (auto profilerOutput = Clang->createOutputFile(
             Path.str(), /*Binary=*/false, /*RemoveFileOnSignal=*/false,
             /*useTemporary=*/false)) {
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -6183,6 +6183,7 @@
   Args.AddLastArg(CmdArgs, options::OPT_ftime_report_EQ);
   Args.AddLastArg(CmdArgs, options::OPT_ftime_trace);
   Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_granularity_EQ);
+  Args.AddLastArg(CmdArgs, options::OPT_ftime_trace_path);
   Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
   Args.AddLastArg(CmdArgs, options::OPT_malign_double);
   Args.AddLastArg(CmdArgs, options::OPT_fno_temp_file);
Index: clang/include/clang/Frontend/FrontendOptions.h
===================================================================
--- clang/include/clang/Frontend/FrontendOptions.h
+++ clang/include/clang/Frontend/FrontendOptions.h
@@ -499,6 +499,9 @@
   /// Minimum time granularity (in microseconds) traced by time profiler.
   unsigned TimeTraceGranularity;
 
+  /// Path which stores the output files of time profiler.
+  std::string TimeTracePath;
+
 public:
   FrontendOptions()
       : DisableFree(false), RelocatablePCH(false), ShowHelp(false),
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -2828,6 +2828,10 @@
   HelpText<"Minimum time granularity (in microseconds) traced by time profiler">,
   Flags<[CC1Option, CoreOption]>,
   MarshallingInfoInt<FrontendOpts<"TimeTraceGranularity">, "500u">;
+def ftime_trace_path : Joined<["-"], "ftime-trace-path=">, Group<f_Group>,
+  HelpText<"Path which specifies the output files for -ftime-trace">,
+  Flags<[CC1Option, CoreOption]>,
+  MarshallingInfoString<FrontendOpts<"TimeTracePath">>;
 def fproc_stat_report : Joined<["-"], "fproc-stat-report">, Group<f_Group>,
   HelpText<"Print subprocess statistics">;
 def fproc_stat_report_EQ : Joined<["-"], "fproc-stat-report=">, Group<f_Group>,


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