[ARM] Remove an unnecessary cast (NFC)

[kazutakahirata]

getSUnit() already returns SUnit *.

[llvmbot]

@llvm/pr-subscribers-backend-arm

Author: Kazu Hirata (kazutakahirata)

Changes

getSUnit() already returns SUnit *.

---

Full diff: https://github.com/llvm/llvm-project/pull/155552.diff

1 Files Affected:

• (modified) llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp (+1-1)

diff --git a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 9e4dbecc16a87..d7398f6a948ce 100644
--- a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -6730,7 +6730,7 @@ bool ARMPipelinerLoopInfo::tooMuchRegisterPressure(SwingSchedulerDAG &SSD,
         Register Reg = S.getReg();
         auto CIter = CrossIterationNeeds.find(Reg.id());
         if (CIter != CrossIterationNeeds.end()) {
-          auto Stg2 = SMS.stageScheduled(const_cast<SUnit *>(S.getSUnit()));
+          auto Stg2 = SMS.stageScheduled(S.getSUnit());
           assert(Stg2 <= Stg && "Data dependence upon earlier stage");
           if (Stg - Stg2 < MAX_STAGES)
             CIter->second.set(Stg - Stg2);