[llvm] 5c41b0f - [Analysis] Remove getUniqueInstruction (NFC)

[Kazu Hirata via llvm-commits]

Author: Kazu Hirata
Date: 2022-06-13T14:26:20-07:00
New Revision: 5c41b0f429652ef50b9378e890f17a1426958e17

URL: https://github.com/llvm/llvm-project/commit/5c41b0f429652ef50b9378e890f17a1426958e17
DIFF: https://github.com/llvm/llvm-project/commit/5c41b0f429652ef50b9378e890f17a1426958e17.diff

LOG: [Analysis] Remove getUniqueInstruction (NFC)

The last use was removed on Apr 7, 2022 in commit
5cefe7d9f531fe6eac4cd22978861752498b2265.

Added: 
    

Modified: 
    llvm/include/llvm/Analysis/AliasSetTracker.h
    llvm/lib/Analysis/AliasSetTracker.cpp

Removed: 
    


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diff  --git a/llvm/include/llvm/Analysis/AliasSetTracker.h b/llvm/include/llvm/Analysis/AliasSetTracker.h
index f3c3b5aac9eeb..78f5545ab215a 100644
--- a/llvm/include/llvm/Analysis/AliasSetTracker.h
+++ b/llvm/include/llvm/Analysis/AliasSetTracker.h
@@ -221,10 +221,6 @@ class AliasSet : public ilist_node<AliasSet> {
   // track of the list's exact size.
   unsigned size() { return SetSize; }
 
-  /// If this alias set is known to contain a single instruction and *only* a
-  /// single unique instruction, return it.  Otherwise, return nullptr.
-  Instruction* getUniqueInstruction();
-
   void print(raw_ostream &OS) const;
   void dump() const;
 

diff  --git a/llvm/lib/Analysis/AliasSetTracker.cpp b/llvm/lib/Analysis/AliasSetTracker.cpp
index ade2933d85260..7f40a875da4b0 100644
--- a/llvm/lib/Analysis/AliasSetTracker.cpp
+++ b/llvm/lib/Analysis/AliasSetTracker.cpp
@@ -254,31 +254,6 @@ bool AliasSet::aliasesUnknownInst(const Instruction *Inst,
   return false;
 }
 
-Instruction* AliasSet::getUniqueInstruction() {
-  if (AliasAny)
-    // May have collapses alias set
-    return nullptr;
-  if (begin() != end()) {
-    if (!UnknownInsts.empty())
-      // Another instruction found
-      return nullptr;
-    if (std::next(begin()) != end())
-      // Another instruction found
-      return nullptr;
-    Value *Addr = begin()->getValue();
-    assert(!Addr->user_empty() &&
-           "where's the instruction which added this pointer?");
-    if (std::next(Addr->user_begin()) != Addr->user_end())
-      // Another instruction found -- this is really restrictive
-      // TODO: generalize!
-      return nullptr;
-    return cast<Instruction>(*(Addr->user_begin()));
-  }
-  if (1 != UnknownInsts.size())
-    return nullptr;
-  return cast<Instruction>(UnknownInsts[0]);
-}
-
 void AliasSetTracker::clear() {
   // Delete all the PointerRec entries.
   for (auto &I : PointerMap)