[Remarks][1/2] Expand remarks hotness threshold option support in more tools

This is the #1 of 2 changes that make remarks hotness threshold option
available in more tools. The changes also allow the threshold to sync with
hotness threshold from profile summary with special value 'auto'.

This change modifies the interface of lto::setupLLVMOptimizationRemarks() to
accept remarks hotness threshold. Update all the tools that use it with remarks
hotness threshold options:

* lld: '--opt-remarks-hotness-threshold='
* llvm-lto2: '--pass-remarks-hotness-threshold='
* llvm-lto: '--lto-pass-remarks-hotness-threshold='
* gold plugin: '-plugin-opt=opt-remarks-hotness-threshold='

Differential Revision: https://reviews.llvm.org/D85809

1 files changed, 6 insertions, 3 deletions

diff --git a/llvm/lib/LTO/LTO.cpp b/llvm/lib/LTO/LTO.cpp
index c2427dc0..9103d11 100644
--- a/llvm/lib/LTO/LTO.cpp
+++ b/llvm/lib/LTO/LTO.cpp
@@ -983,7 +983,8 @@ Error LTO::runRegularLTO(AddStreamFn AddStream) {
   // Setup optimization remarks.
   auto DiagFileOrErr = lto::setupLLVMOptimizationRemarks(
       RegularLTO.CombinedModule->getContext(), Conf.RemarksFilename,
-      Conf.RemarksPasses, Conf.RemarksFormat, Conf.RemarksWithHotness);
+      Conf.RemarksPasses, Conf.RemarksFormat, Conf.RemarksWithHotness,
+      Conf.RemarksHotnessThreshold);
   if (!DiagFileOrErr)
     return DiagFileOrErr.takeError();
 
@@ -1488,7 +1489,8 @@ Error LTO::runThinLTO(AddStreamFn AddStream, NativeObjectCache Cache,
 
 Expected<std::unique_ptr<ToolOutputFile>> lto::setupLLVMOptimizationRemarks(
     LLVMContext &Context, StringRef RemarksFilename, StringRef RemarksPasses,
-    StringRef RemarksFormat, bool RemarksWithHotness, int Count) {
+    StringRef RemarksFormat, bool RemarksWithHotness,
+    Optional<uint64_t> RemarksHotnessThreshold, int Count) {
   std::string Filename = std::string(RemarksFilename);
   // For ThinLTO, file.opt.<format> becomes
   // file.opt.<format>.thin.<num>.<format>.
@@ -1498,7 +1500,8 @@ Expected<std::unique_ptr<ToolOutputFile>> lto::setupLLVMOptimizationRemarks(
             .str();
 
   auto ResultOrErr = llvm::setupLLVMOptimizationRemarks(
-      Context, Filename, RemarksPasses, RemarksFormat, RemarksWithHotness);
+      Context, Filename, RemarksPasses, RemarksFormat, RemarksWithHotness,
+      RemarksHotnessThreshold);
   if (Error E = ResultOrErr.takeError())
     return std::move(E);