[polly] 6b5883b - [Polly] Remove unused DenseMapInfo::getEmptyKey (#201992)

[via llvm-commits]

Author: Fangrui Song
Date: 2026-06-06T11:18:12-07:00
New Revision: 6b5883b38e158ce4659859ffd78f6ad2869979c1

URL: https://github.com/llvm/llvm-project/commit/6b5883b38e158ce4659859ffd78f6ad2869979c1
DIFF: https://github.com/llvm/llvm-project/commit/6b5883b38e158ce4659859ffd78f6ad2869979c1.diff

LOG: [Polly] Remove unused DenseMapInfo::getEmptyKey (#201992)

After #201281 DenseMapInfo<T>::getEmptyKey() is no longer used by
DenseMap. Remove the unused getEmptyKey definitions and dead sentinel
uses.

Added: 
    

Modified: 
    polly/include/polly/Support/VirtualInstruction.h

Removed: 
    


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diff  --git a/polly/include/polly/Support/VirtualInstruction.h b/polly/include/polly/Support/VirtualInstruction.h
index a9792840bf4f7..23fd86bc73c58 100644
--- a/polly/include/polly/Support/VirtualInstruction.h
+++ b/polly/include/polly/Support/VirtualInstruction.h
@@ -322,13 +322,6 @@ template <> struct DenseMapInfo<polly::VirtualInstruction> {
                                                 RHS.getInstruction());
   }
 
-  static polly::VirtualInstruction getEmptyKey() {
-    polly::VirtualInstruction EmptyKey;
-    EmptyKey.Stmt = DenseMapInfo<polly::ScopStmt *>::getEmptyKey();
-    EmptyKey.Inst = DenseMapInfo<Instruction *>::getEmptyKey();
-    return EmptyKey;
-  }
-
   static unsigned getHashValue(polly::VirtualInstruction Val) {
     return DenseMapInfo<std::pair<polly::ScopStmt *, Instruction *>>::
         getHashValue(std::make_pair(Val.getStmt(), Val.getInstruction()));