[NewPM][PassInstrumentation] IR printing support from clang driver

Summary: https://reviews.llvm.org/D50923 enabled the IR printing support for the new pass manager, but only for the case when `opt` tool is used as a driver. This patch is to enable the IR printing when `clang` is used as a driver.

Reviewers: fedor.sergeev, philip.pfaffe

Subscribers: cfe-commits, yamauchi, llvm-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65975

llvm-svn: 368804
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index cb38056..2023ced 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -37,6 +37,7 @@
 #include "llvm/MC/SubtargetFeature.h"
 #include "llvm/Passes/PassBuilder.h"
 #include "llvm/Passes/PassPlugin.h"
+#include "llvm/Passes/StandardInstrumentations.h"
 #include "llvm/Support/BuryPointer.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/MemoryBuffer.h"
@@ -1063,7 +1064,10 @@
   PTO.LoopVectorization = CodeGenOpts.VectorizeLoop;
   PTO.SLPVectorization = CodeGenOpts.VectorizeSLP;
 
-  PassBuilder PB(TM.get(), PTO, PGOOpt);
+  PassInstrumentationCallbacks PIC;
+  StandardInstrumentations SI;
+  SI.registerCallbacks(PIC);
+  PassBuilder PB(TM.get(), PTO, PGOOpt, &PIC);
 
   // Attempt to load pass plugins and register their callbacks with PB.
   for (auto &PluginFN : CodeGenOpts.PassPlugins) {