Reland "CodeGen][NewPM] Port MachineScheduler to NPM. (#125703)" (#126684)

`RegisterClassInfo` was supposed to be kept alive between pass runs,
which wasn't being done leading to recomputations increasing the compile
time.

Now the Impl class is a member of the legacy and new passes so that it
is not reconstructed on every pass run.

---------

Co-authored-by: Christudasan Devadasan <christudasan.devadasan@amd.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/CodeGen.cpp b/llvm/lib/CodeGen/CodeGen.cpp
index d69a24f..35df2a47 100644
--- a/llvm/lib/CodeGen/CodeGen.cpp
+++ b/llvm/lib/CodeGen/CodeGen.cpp
@@ -94,7 +94,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializeModuloScheduleTestPass(Registry);
   initializeMachinePostDominatorTreeWrapperPassPass(Registry);
   initializeMachineRegionInfoPassPass(Registry);
-  initializeMachineSchedulerPass(Registry);
+  initializeMachineSchedulerLegacyPass(Registry);
   initializeMachineSinkingPass(Registry);
   initializeMachineUniformityAnalysisPassPass(Registry);
   initializeMachineUniformityInfoPrinterPassPass(Registry);
@@ -105,7 +105,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializePHIEliminationPass(Registry);
   initializePatchableFunctionPass(Registry);
   initializePeepholeOptimizerLegacyPass(Registry);
-  initializePostMachineSchedulerPass(Registry);
+  initializePostMachineSchedulerLegacyPass(Registry);
   initializePostRAHazardRecognizerPass(Registry);
   initializePostRAMachineSinkingPass(Registry);
   initializePostRASchedulerLegacyPass(Registry);