[PATCH] D140769: [lld-link] Add /lto-newpm-passes & /load-pass-plugin to CLI

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This change adds /lto-newpm-passes and /load-pass-plugin command line arguments to lld-link. These are basically exactly the same arguments lld already has (--lto-newpm-passes and --load-pass-plugin) to enable loading custom LTO passes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D140769

Files:
  lld/COFF/Config.h
  lld/COFF/Driver.cpp
  lld/COFF/LTO.cpp
  lld/COFF/Options.td


Index: lld/COFF/Options.td
===================================================================
--- lld/COFF/Options.td
+++ lld/COFF/Options.td
@@ -282,6 +282,9 @@
 
 def vfsoverlay : P<"vfsoverlay", "Path to a vfsoverlay yaml file to optionally look for /defaultlib's in">;
 
+def lto_newpm_passes: P<"lto-newpm-passes", "Passes to run during LTO">;
+def load_pass_plugins: P<"load-pass-plugin", "Load passes from plugin library">;
+
 // Flags for debugging
 def lldmap : F<"lldmap">;
 def lldmap_file : P_priv<"lldmap">;
Index: lld/COFF/LTO.cpp
===================================================================
--- lld/COFF/LTO.cpp
+++ lld/COFF/LTO.cpp
@@ -93,6 +93,10 @@
   c.CSIRProfile = std::string(config->ltoCSProfileFile);
   c.RunCSIRInstr = config->ltoCSProfileGenerate;
   c.PGOWarnMismatch = config->ltoPGOWarnMismatch;
+  c.OptPipeline = std::string(config->ltoNewPmPasses);
+
+  for (StringRef pluginFn : config->passPlugins)
+    c.PassPlugins.push_back(std::string(pluginFn));
 
   if (config->saveTemps)
     checkError(c.addSaveTemps(std::string(config->outputFile) + ".",
Index: lld/COFF/Driver.cpp
===================================================================
--- lld/COFF/Driver.cpp
+++ lld/COFF/Driver.cpp
@@ -1919,6 +1919,9 @@
       args.hasFlag(OPT_stdcall_fixup, OPT_stdcall_fixup_no, config->mingw);
   config->warnStdcallFixup = !args.hasArg(OPT_stdcall_fixup);
 
+  config->ltoNewPmPasses = args.getLastArgValue(OPT_lto_newpm_passes);
+  config->passPlugins = args::getStrings(args, OPT_load_pass_plugins);
+
   // Don't warn about long section names, such as .debug_info, for mingw or
   // when -debug:dwarf is requested.
   if (config->mingw || config->debugDwarf)
Index: lld/COFF/Config.h
===================================================================
--- lld/COFF/Config.h
+++ lld/COFF/Config.h
@@ -289,6 +289,9 @@
   bool autoImport = false;
   bool pseudoRelocs = false;
   bool stdcallFixup = false;
+
+  llvm::StringRef ltoNewPmPasses;
+  llvm::SmallVector<llvm::StringRef, 0> passPlugins;
 };
 
 extern std::unique_ptr<Configuration> config;


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