Author: Kazu Hirata Date: 2025-04-14T12:34:31-07:00 New Revision: 73d1e8598eda19be8edd9eaaefc091228c651217
URL: https://github.com/llvm/llvm-project/commit/73d1e8598eda19be8edd9eaaefc091228c651217 DIFF: https://github.com/llvm/llvm-project/commit/73d1e8598eda19be8edd9eaaefc091228c651217.diff LOG: [CodeGen] Avoid repeated hash lookups (NFC) (#130237) (cherry picked from commit 616f277640129ff37d4005737a62acbd60d06ca1) Added: Modified: llvm/lib/CodeGen/ModuloSchedule.cpp Removed: ################################################################################ diff --git a/llvm/lib/CodeGen/ModuloSchedule.cpp b/llvm/lib/CodeGen/ModuloSchedule.cpp index f9fe812f7e65c..8fed3a6ff709f 100644 --- a/llvm/lib/CodeGen/ModuloSchedule.cpp +++ b/llvm/lib/CodeGen/ModuloSchedule.cpp @@ -464,10 +464,12 @@ void ModuloScheduleExpander::generateExistingPhis( InstOp1 = MRI.getVRegDef(PhiOp1); int PhiOpStage = Schedule.getStage(InstOp1); int StageAdj = (PhiOpStage != -1 ? PhiStage - PhiOpStage : 0); - if (PhiOpStage != -1 && PrologStage - StageAdj >= Indirects + np && - VRMap[PrologStage - StageAdj - Indirects - np].count(PhiOp1)) { - PhiOp1 = VRMap[PrologStage - StageAdj - Indirects - np][PhiOp1]; - break; + if (PhiOpStage != -1 && PrologStage - StageAdj >= Indirects + np) { + auto &M = VRMap[PrologStage - StageAdj - Indirects - np]; + if (auto It = M.find(PhiOp1); It != M.end()) { + PhiOp1 = It->second; + break; + } } ++Indirects; } @@ -597,8 +599,11 @@ void ModuloScheduleExpander::generateExistingPhis( // Check if we need to rename a Phi that has been eliminated due to // scheduling. - if (NumStages == 0 && IsLast && VRMap[CurStageNum].count(LoopVal)) - replaceRegUsesAfterLoop(Def, VRMap[CurStageNum][LoopVal], BB, MRI, LIS); + if (NumStages == 0 && IsLast) { + auto It = VRMap[CurStageNum].find(LoopVal); + if (It != VRMap[CurStageNum].end()) + replaceRegUsesAfterLoop(Def, It->second, BB, MRI, LIS); + } } } _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
