[CodeGen][NewPM] Port `machine-loops` to new pass manager (#97793)

- Add `MachineLoopAnalysis`.
- Add `MachineLoopPrinterPass`.
- Convert to `MachineLoopInfoWrapperPass` in legacy pass manager.

1 files changed, 5 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/RegAllocBasic.cpp b/llvm/lib/CodeGen/RegAllocBasic.cpp
index f465c63..2062334 100644
--- a/llvm/lib/CodeGen/RegAllocBasic.cpp
+++ b/llvm/lib/CodeGen/RegAllocBasic.cpp
@@ -137,7 +137,7 @@ INITIALIZE_PASS_DEPENDENCY(MachineScheduler)
 INITIALIZE_PASS_DEPENDENCY(LiveStacks)
 INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
+INITIALIZE_PASS_DEPENDENCY(MachineLoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(VirtRegMap)
 INITIALIZE_PASS_DEPENDENCY(LiveRegMatrix)
 INITIALIZE_PASS_END(RABasic, "regallocbasic", "Basic Register Allocator", false,
@@ -188,8 +188,8 @@ void RABasic::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<MachineBlockFrequencyInfo>();
   AU.addRequiredID(MachineDominatorsID);
   AU.addPreservedID(MachineDominatorsID);
-  AU.addRequired<MachineLoopInfo>();
-  AU.addPreserved<MachineLoopInfo>();
+  AU.addRequired<MachineLoopInfoWrapperPass>();
+  AU.addPreserved<MachineLoopInfoWrapperPass>();
   AU.addRequired<VirtRegMap>();
   AU.addPreserved<VirtRegMap>();
   AU.addRequired<LiveRegMatrix>();
@@ -312,7 +312,8 @@ bool RABasic::runOnMachineFunction(MachineFunction &mf) {
   RegAllocBase::init(getAnalysis<VirtRegMap>(),
                      getAnalysis<LiveIntervals>(),
                      getAnalysis<LiveRegMatrix>());
-  VirtRegAuxInfo VRAI(*MF, *LIS, *VRM, getAnalysis<MachineLoopInfo>(),
+  VirtRegAuxInfo VRAI(*MF, *LIS, *VRM,
+                      getAnalysis<MachineLoopInfoWrapperPass>().getLI(),
                       getAnalysis<MachineBlockFrequencyInfo>());
   VRAI.calculateSpillWeightsAndHints();