[CodeGen][NewPM] Port `LiveVariables` to new pass manager (#97880)

- Port `LiveVariables` to new pass manager.
- Convert to `LiveVariablesWrapperPass` in legacy pass manager.

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
index 75a1575..ec70099 100644
--- a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -763,7 +763,8 @@ bool SILowerControlFlow::runOnMachineFunction(MachineFunction &MF) {
   // This doesn't actually need LiveIntervals, but we can preserve them.
   LIS = getAnalysisIfAvailable<LiveIntervals>();
   // This doesn't actually need LiveVariables, but we can preserve them.
-  LV = getAnalysisIfAvailable<LiveVariables>();
+  auto *LVWrapper = getAnalysisIfAvailable<LiveVariablesWrapperPass>();
+  LV = LVWrapper ? &LVWrapper->getLV() : nullptr;
   auto *MDTWrapper = getAnalysisIfAvailable<MachineDominatorTreeWrapperPass>();
   MDT = MDTWrapper ? &MDTWrapper->getDomTree() : nullptr;
   MRI = &MF.getRegInfo();