[PATCH] D45275: Add support for LTO options

[Rumeet Dhindsa via Phabricator via llvm-commits]

rdhindsa created this revision.
rdhindsa added reviewers: tejohnson, ruiu.
Herald added subscribers: llvm-commits, arichardson, inglorion, emaste.
Herald added a reviewer: espindola.

Add support for LTO options: sample_profile and new_pass_manager


Repository:
  rLLD LLVM Linker

https://reviews.llvm.org/D45275

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


Index: lld/ELF/Options.td
===================================================================
--- lld/ELF/Options.td
+++ lld/ELF/Options.td
@@ -394,10 +394,14 @@
 // LTO-related options.
 def lto_aa_pipeline: J<"lto-aa-pipeline=">,
   HelpText<"AA pipeline to run during LTO. Used in conjunction with -lto-newpm-passes">;
+def lto_new_pass_manager: F<"lto-new-pass-manager">,
+  HelpText<"New pass manager">;
 def lto_newpm_passes: J<"lto-newpm-passes=">,
   HelpText<"Passes to run during LTO">;
 def lto_partitions: J<"lto-partitions=">,
   HelpText<"Number of LTO codegen partitions">;
+def lto_sample_profile: J<"lto-sample-profile=">,
+  HelpText<"Sample profile file path">;
 def disable_verify: F<"disable-verify">;
 defm mllvm: Eq<"mllvm">;
 def opt_remarks_filename: Separate<["--"], "opt-remarks-filename">,
Index: lld/ELF/LTO.cpp
===================================================================
--- lld/ELF/LTO.cpp
+++ lld/ELF/LTO.cpp
@@ -104,6 +104,13 @@
   lto::ThinBackend Backend;
   if (Config->ThinLTOJobs != -1u)
     Backend = lto::createInProcessThinBackend(Config->ThinLTOJobs);
+
+  if (!Config->LTOSampleProfile.empty())
+    Conf.SampleProfile = Config->LTOSampleProfile;
+
+  // Use new pass manager if set in driver
+  Conf.UseNewPM = Config->LTONewPassManager;
+
   return llvm::make_unique<lto::LTO>(std::move(Conf), Backend,
                                      Config->LTOPartitions);
 }
Index: lld/ELF/Driver.cpp
===================================================================
--- lld/ELF/Driver.cpp
+++ lld/ELF/Driver.cpp
@@ -657,6 +657,9 @@
       Args.hasArg(OPT_ignore_function_address_equality);
   Config->Init = Args.getLastArgValue(OPT_init, "_init");
   Config->LTOAAPipeline = Args.getLastArgValue(OPT_lto_aa_pipeline);
+  Config->LTOSampleProfile = Args.getLastArgValue(OPT_lto_sample_profile);
+  Config->LTONewPassManager =
+      Args.hasFlag(OPT_lto_new_pass_manager, OPT_lto_new_pass_manager, false);
   Config->LTONewPmPasses = Args.getLastArgValue(OPT_lto_newpm_passes);
   Config->LTOO = args::getInteger(Args, OPT_lto_O, 2);
   Config->LTOPartitions = args::getInteger(Args, OPT_lto_partitions, 1);
@@ -734,6 +737,10 @@
       Config->ThinLTOJobs = parseInt(S.substr(5), Arg);
     else if (S.startswith("mcpu="))
       parseClangOption(Saver.save("-" + S), Arg->getSpelling());
+    else if (S.startswith("sample-profile="))
+      Config->LTOSampleProfile = S.substr(strlen("sample-profile="));
+    else if (S == "new-pass-manager")
+      Config->LTONewPassManager = true;
     else if (!S.startswith("/") && !S.startswith("-fresolution=") &&
              !S.startswith("-pass-through=") && !S.startswith("thinlto"))
       parseClangOption(S, Arg->getSpelling());
Index: lld/ELF/Config.h
===================================================================
--- lld/ELF/Config.h
+++ lld/ELF/Config.h
@@ -85,6 +85,7 @@
   llvm::StringRef Init;
   llvm::StringRef LTOAAPipeline;
   llvm::StringRef LTONewPmPasses;
+  llvm::StringRef LTOSampleProfile;
   llvm::StringRef MapFile;
   llvm::StringRef OutputFile;
   llvm::StringRef OptRemarksFilename;
@@ -131,6 +132,7 @@
   bool ICF;
   bool IgnoreDataAddressEquality;
   bool IgnoreFunctionAddressEquality;
+  bool LTONewPassManager = false;
   bool MergeArmExidx;
   bool MipsN32Abi = false;
   bool NoinhibitExec;


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