[PM] pass -debug-pass-manager flag into FunctionToLoopPassAdaptor's canonicalization PM

Summary:
New pass manager driver passes DebugPM (-debug-pass-manager) flag into
individual PassManager constructors in order to enable debug logging.
FunctionToLoopPassAdaptor has its own internal LoopCanonicalizationPM
which never gets its debug logging enabled and that means canonicalization
passes like LoopSimplify are never present in -debug-pass-manager output.

Extending FunctionToLoopPassAdaptor's constructor and
createFunctionToLoopPassAdaptor wrapper with an optional
boolean DebugLogging argument.

Passing debug-logging flags there as appropriate.

Reviewers: chandlerc, davide

Reviewed By: davide

Subscribers: mehdi_amini, eraman, llvm-commits, JDevlieghere

Differential Revision: https://reviews.llvm.org/D41586

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@321548 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 3 deletions

diff --git a/include/llvm/Transforms/Scalar/LoopPassManager.h b/include/llvm/Transforms/Scalar/LoopPassManager.h
index 473b97dc7e8d..56a45ed34178 100644
--- a/include/llvm/Transforms/Scalar/LoopPassManager.h
+++ b/include/llvm/Transforms/Scalar/LoopPassManager.h
@@ -264,7 +264,8 @@ template <typename LoopPassT>
 class FunctionToLoopPassAdaptor
     : public PassInfoMixin<FunctionToLoopPassAdaptor<LoopPassT>> {
 public:
-  explicit FunctionToLoopPassAdaptor(LoopPassT Pass) : Pass(std::move(Pass)) {
+  explicit FunctionToLoopPassAdaptor(LoopPassT Pass, bool DebugLogging = false)
+      : Pass(std::move(Pass)), LoopCanonicalizationFPM(DebugLogging) {
     LoopCanonicalizationFPM.addPass(LoopSimplifyPass());
     LoopCanonicalizationFPM.addPass(LCSSAPass());
   }
@@ -384,8 +385,8 @@ private:
 /// adaptor.
 template <typename LoopPassT>
 FunctionToLoopPassAdaptor<LoopPassT>
-createFunctionToLoopPassAdaptor(LoopPassT Pass) {
-  return FunctionToLoopPassAdaptor<LoopPassT>(std::move(Pass));
+createFunctionToLoopPassAdaptor(LoopPassT Pass, bool DebugLogging = false) {
+  return FunctionToLoopPassAdaptor<LoopPassT>(std::move(Pass), DebugLogging);
 }
 
 /// \brief Pass for printing a loop's contents as textual IR.