[Remarks] Add -foptimization-record-passes to filter remark emission

Currently we have -Rpass for filtering the remarks that are displayed as
diagnostics, but when using -fsave-optimization-record, there is no way
to filter the remarks while generating them.

This adds support for filtering remarks by passes using a regex.
Ex: `clang -fsave-optimization-record -foptimization-record-passes=inline`

will only emit the remarks coming from the pass `inline`.

This adds:

* `-fsave-optimization-record` to the driver
* `-opt-record-passes` to cc1
* `-lto-pass-remarks-filter` to the LTOCodeGenerator
* `--opt-remarks-passes` to lld
* `-pass-remarks-filter` to llc, opt, llvm-lto, llvm-lto2
* `-opt-remarks-passes` to gold-plugin

Differential Revision: https://reviews.llvm.org/D59268

llvm-svn: 355964

1 files changed, 5 insertions, 3 deletions

diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
index 0595771bd00..64c596931fa 100644
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -429,8 +429,9 @@ Error lto::backend(Config &C, AddStreamFn AddStream,
   std::unique_ptr<TargetMachine> TM = createTargetMachine(C, *TOrErr, *Mod);
 
   // Setup optimization remarks.
-  auto DiagFileOrErr = lto::setupOptimizationRemarks(
-      Mod->getContext(), C.RemarksFilename, C.RemarksWithHotness);
+  auto DiagFileOrErr =
+      lto::setupOptimizationRemarks(Mod->getContext(), C.RemarksFilename,
+                                    C.RemarksPasses, C.RemarksWithHotness);
   if (!DiagFileOrErr)
     return DiagFileOrErr.takeError();
   auto DiagnosticOutputFile = std::move(*DiagFileOrErr);
@@ -484,7 +485,8 @@ Error lto::thinBackend(Config &Conf, unsigned Task, AddStreamFn AddStream,
 
   // Setup optimization remarks.
   auto DiagFileOrErr = lto::setupOptimizationRemarks(
-      Mod.getContext(), Conf.RemarksFilename, Conf.RemarksWithHotness, Task);
+      Mod.getContext(), Conf.RemarksFilename, Conf.RemarksPasses,
+      Conf.RemarksWithHotness, Task);
   if (!DiagFileOrErr)
     return DiagFileOrErr.takeError();
   auto DiagnosticOutputFile = std::move(*DiagFileOrErr);