[coroutines] Part 3 of N: Adding Boilerplate for Coroutine Passes

This adds boilerplate code for all coroutine passes,
the passes are no-ops for now.
Also, a small test has been added to verify that passes execute in
the expected order or not at all if coroutine support is disabled.

Patch by Gor Nishanov!

Differential Revision: https://reviews.llvm.org/D22847

llvm-svn: 277033

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
index 090c04a87d1..ca0f134a612 100644
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -50,6 +50,7 @@
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Transforms/Coroutines.h"
 #include "llvm/Transforms/IPO/PassManagerBuilder.h"
 #include "llvm/Transforms/Utils/Cloning.h"
 #include <algorithm>
@@ -215,6 +216,11 @@ static cl::opt<bool> DiscardValueNames(
     cl::desc("Discard names from Value (other than GlobalValue)."),
     cl::init(false), cl::Hidden);
 
+static cl::opt<bool> Coroutines(
+  "enable-coroutines",
+  cl::desc("Enable coroutine passes."),
+  cl::init(false), cl::Hidden);
+
 static cl::opt<bool> PassRemarksWithHotness(
     "pass-remarks-with-hotness",
     cl::desc("With PGO, include profile count in optimization remarks"),
@@ -274,6 +280,9 @@ static void AddOptimizationPasses(legacy::PassManagerBase &MPM,
           TM->addEarlyAsPossiblePasses(PM);
         });
 
+  if (Coroutines)
+    addCoroutinePassesToExtensionPoints(Builder);
+
   Builder.populateFunctionPassManager(FPM);
   Builder.populateModulePassManager(MPM);
 }
@@ -348,6 +357,7 @@ int main(int argc, char **argv) {
   // Initialize passes
   PassRegistry &Registry = *PassRegistry::getPassRegistry();
   initializeCore(Registry);
+  initializeCoroutines(Registry);
   initializeScalarOpts(Registry);
   initializeObjCARCOpts(Registry);
   initializeVectorization(Registry);