[PGO] Context sensitive PGO (part 3)

Part 3 of CSPGO changes (mostly related to PassMananger).

Differential Revision: https://reviews.llvm.org/D54175

llvm-svn: 355330

1 files changed, 27 insertions, 0 deletions

diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
index 4afe7508fc2..aef6df4a09d 100644
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -287,6 +287,22 @@ cl::opt<PGOKind>
 cl::opt<std::string> ProfileFile("profile-file",
                                  cl::desc("Path to the profile."), cl::Hidden);
 
+cl::opt<CSPGOKind> CSPGOKindFlag(
+    "cspgo-kind", cl::init(NoCSPGO), cl::Hidden,
+    cl::desc("The kind of context sensitive profile guided optimization"),
+    cl::values(
+        clEnumValN(NoCSPGO, "nocspgo", "Do not use CSPGO."),
+        clEnumValN(
+            CSInstrGen, "cspgo-instr-gen-pipeline",
+            "Instrument (context sensitive) the IR to generate profile."),
+        clEnumValN(
+            CSInstrUse, "cspgo-instr-use-pipeline",
+            "Use instrumented (context sensitive) profile to guide PGO.")));
+cl::opt<std::string> CSProfileGenFile(
+    "cs-profilegen-file",
+    cl::desc("Path to the instrumented context sensitive profile."),
+    cl::Hidden);
+
 class OptCustomPassManager : public legacy::PassManager {
   DebugifyStatsMap DIStatsMap;
 
@@ -396,6 +412,17 @@ static void AddOptimizationPasses(legacy::PassManagerBase &MPM,
     break;
   }
 
+  switch (CSPGOKindFlag) {
+  case CSInstrGen:
+    Builder.EnablePGOCSInstrGen = true;
+    break;
+  case InstrUse:
+    Builder.EnablePGOCSInstrUse = true;
+    break;
+  default:
+    break;
+  }
+
   Builder.populateFunctionPassManager(FPM);
   Builder.populateModulePassManager(MPM);
 }