[clang][nvlink-wrapper] Add support for opt-remarks command line options

This patch adds support for optimization record command line options to
clang-nvlink-wrapper, fixing an issue where using -fsave-optimization-record
with CUDA offloading would fail with "Unknown command line argument
'opt-remarks-format=yaml'".

Author: miguelcsx

clang/tools/clang-nvlink-wrapper/ClangNVLinkWrapper.cpp

@@ -341,11 +341,23 @@ Expected<std::unique_ptr<lto::LTO>> createLTO(const ArgList &Args) {
   Conf.CPU = Args.getLastArgValue(OPT_arch);
   Conf.Options = codegen::InitTargetOptionsFromCodeGenFlags(Triple);
 
-  Conf.RemarksFilename = RemarksFilename;
-  Conf.RemarksPasses = RemarksPasses;
-  Conf.RemarksWithHotness = RemarksWithHotness;
+  if (auto *Arg = Args.getLastArg(OPT_opt_remarks_filename))
+    Conf.RemarksFilename = Arg->getValue();
+  else
+    Conf.RemarksFilename = RemarksFilename;
+  
+  if (auto *Arg = Args.getLastArg(OPT_opt_remarks_filter))
+    Conf.RemarksPasses = Arg->getValue();
+  else
+    Conf.RemarksPasses = RemarksPasses;
+  
+  if (auto *Arg = Args.getLastArg(OPT_opt_remarks_format))
+    Conf.RemarksFormat = Arg->getValue();
+  else
+    Conf.RemarksFormat = RemarksFormat;
+  
+  Conf.RemarksWithHotness = Args.hasArg(OPT_opt_remarks_with_hotness) || RemarksWithHotness;
   Conf.RemarksHotnessThreshold = RemarksHotnessThreshold;
-  Conf.RemarksFormat = RemarksFormat;
 
   Conf.MAttrs = llvm::codegen::getMAttrs();
   std::optional<CodeGenOptLevel> CGOptLevelOrNone =

clang/tools/clang-nvlink-wrapper/NVLinkOpts.td

@@ -72,6 +72,25 @@ def : Joined<["--", "-"], "plugin-opt=emit-llvm">,
   Flags<[WrapperOnlyOption]>, Alias<lto_emit_llvm>;
 def : Joined<["--", "-"], "plugin-opt=emit-asm">,
   Flags<[WrapperOnlyOption]>, Alias<lto_emit_asm>;
+
+def opt_remarks_filename : Separate<["--"], "opt-remarks-filename">,
+  Flags<[WrapperOnlyOption]>, HelpText<"YAML output file for optimization remarks">;
+def opt_remarks_format : Separate<["--"], "opt-remarks-format">,
+  Flags<[WrapperOnlyOption]>, HelpText<"The format used for serializing remarks (default: YAML)">;
+def opt_remarks_filter : Separate<["--"], "opt-remarks-filter">, 
+  Flags<[WrapperOnlyOption]>, HelpText<"Regex for the passes that need to be serialized to the output file">;
+def opt_remarks_with_hotness : Flag<["--"], "opt-remarks-with-hotness">,
+  Flags<[WrapperOnlyOption]>, HelpText<"Include hotness information in the optimization remarks file">;
+
+def : Joined<["--", "-"], "plugin-opt=opt-remarks-filename=">,
+  Flags<[WrapperOnlyOption]>, Alias<opt_remarks_filename>;
+def : Joined<["--", "-"], "plugin-opt=opt-remarks-format=">,
+  Flags<[WrapperOnlyOption]>, Alias<opt_remarks_format>;
+def : Joined<["--", "-"], "plugin-opt=opt-remarks-filter=">,
+  Flags<[WrapperOnlyOption]>, Alias<opt_remarks_filter>;
+def : Flag<["--", "-"], "plugin-opt=opt-remarks-with-hotness">,
+  Flags<[WrapperOnlyOption]>, Alias<opt_remarks_with_hotness>;
+
 def plugin_opt : Joined<["--", "-"], "plugin-opt=">, Flags<[WrapperOnlyOption]>,
   HelpText<"Options passed to LLVM, not including the Clang invocation. Use "
            "'--plugin-opt=--help' for a list of options.">;