Reland "[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

Original llvm-svn: 355964

llvm-svn: 355984

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CodeGenAction.cpp b/clang/lib/CodeGen/CodeGenAction.cpp
index f59adcd3fb9..cab3a6bc32b 100644
--- a/clang/lib/CodeGen/CodeGenAction.cpp
+++ b/clang/lib/CodeGen/CodeGenAction.cpp
@@ -19,6 +19,7 @@
 #include "clang/Basic/TargetInfo.h"
 #include "clang/CodeGen/BackendUtil.h"
 #include "clang/CodeGen/ModuleBuilder.h"
+#include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
 #include "clang/Lex/Preprocessor.h"
@@ -280,6 +281,12 @@ namespace clang {
         Ctx.setRemarkStreamer(llvm::make_unique<RemarkStreamer>(
             CodeGenOpts.OptRecordFile, OptRecordFile->os()));
 
+        if (!CodeGenOpts.OptRecordPasses.empty())
+          if (Error E = Ctx.getRemarkStreamer()->setFilter(
+                  CodeGenOpts.OptRecordPasses))
+            Diags.Report(diag::err_drv_optimization_remark_pattern)
+                << toString(std::move(E)) << CodeGenOpts.OptRecordPasses;
+
         if (CodeGenOpts.getProfileUse() != CodeGenOptions::ProfileNone)
           Ctx.setDiagnosticsHotnessRequested(true);
       }