[llvm] [Attributor] Change allocation size and load/store offsets when multiple access bins are present (PR #72029)

Vidush Singhal via llvm-commits llvm-commits at lists.llvm.org
Sun Jun 2 00:20:57 PDT 2024


https://github.com/vidsinghal updated https://github.com/llvm/llvm-project/pull/72029

>From 846386b013d2912aae434938e1e3aba005f5d66a Mon Sep 17 00:00:00 2001
From: vidsinghal <vidush.sl at gmail.com>
Date: Sun, 5 Nov 2023 22:30:42 -0500
Subject: [PATCH] [Attributor] Fix Load/Store Offsets if multiple bins are
 present for a pointer allocation.

---
 llvm/include/llvm/Transforms/IPO/Attributor.h |  17 +-
 .../Transforms/IPO/AttributorAttributes.cpp   | 329 +++++++++++++++--
 .../Attributor/ArgumentPromotion/crash.ll     |   6 +-
 .../live_called_from_dead.ll                  |   4 +-
 .../live_called_from_dead_2.ll                |   4 +-
 .../nonzero-address-spaces.ll                 |   3 +-
 .../Attributor/IPConstantProp/pthreads.ll     |   4 +-
 llvm/test/Transforms/Attributor/allocator.ll  | 153 +++++---
 .../Attributor/call-simplify-pointer-info.ll  |  63 ++--
 .../Transforms/Attributor/heap_to_stack.ll    |   3 +-
 .../Attributor/heap_to_stack_gpu.ll           |   3 +-
 llvm/test/Transforms/Attributor/liveness.ll   |   8 +-
 .../multiple-offsets-pointer-info.ll          | 344 ++++++++++++------
 .../test/Transforms/Attributor/nocapture-2.ll |  20 +-
 llvm/test/Transforms/Attributor/nodelete.ll   |   5 +-
 .../Transforms/Attributor/pointer-info.ll     |   6 +-
 .../value-simplify-pointer-info-vec.ll        |  14 +-
 .../Attributor/value-simplify-pointer-info.ll | 168 +++++----
 18 files changed, 828 insertions(+), 326 deletions(-)

diff --git a/llvm/include/llvm/Transforms/IPO/Attributor.h b/llvm/include/llvm/Transforms/IPO/Attributor.h
index 30c51250af61c..a5655ade26b06 100644
--- a/llvm/include/llvm/Transforms/IPO/Attributor.h
+++ b/llvm/include/llvm/Transforms/IPO/Attributor.h
@@ -5143,9 +5143,7 @@ struct DenormalFPMathState : public AbstractState {
       return Mode != Other.Mode || ModeF32 != Other.ModeF32;
     }
 
-    bool isValid() const {
-      return Mode.isValid() && ModeF32.isValid();
-    }
+    bool isValid() const { return Mode.isValid() && ModeF32.isValid(); }
 
     static DenormalMode::DenormalModeKind
     unionDenormalKind(DenormalMode::DenormalModeKind Callee,
@@ -5185,9 +5183,7 @@ struct DenormalFPMathState : public AbstractState {
   // state.
   DenormalState getAssumed() const { return Known; }
 
-  bool isValidState() const override {
-    return Known.isValid();
-  }
+  bool isValidState() const override { return Known.isValid(); }
 
   /// Return true if there are no dynamic components to the denormal mode worth
   /// specializing.
@@ -5198,9 +5194,7 @@ struct DenormalFPMathState : public AbstractState {
            Known.ModeF32.Output != DenormalMode::Dynamic;
   }
 
-  bool isAtFixpoint() const override {
-    return IsAtFixedpoint;
-  }
+  bool isAtFixpoint() const override { return IsAtFixedpoint; }
 
   ChangeStatus indicateFixpoint() {
     bool Changed = !IsAtFixedpoint;
@@ -6122,6 +6116,8 @@ struct AAPointerInfo : public AbstractAttribute {
   virtual const_bin_iterator begin() const = 0;
   virtual const_bin_iterator end() const = 0;
   virtual int64_t numOffsetBins() const = 0;
+  virtual void dumpState(raw_ostream &O) const = 0;
+  virtual const Access &getBinAccess(unsigned Index) const = 0;
 
   /// Call \p CB on all accesses that might interfere with \p Range and return
   /// true if all such accesses were known and the callback returned true for
@@ -6293,6 +6289,9 @@ struct AAAllocationInfo : public StateWrapper<BooleanState, AbstractAttribute> {
 
   virtual std::optional<TypeSize> getAllocatedSize() const = 0;
 
+  using NewOffsetsTy = DenseMap<AA::RangeTy, AA::RangeTy>;
+  virtual const NewOffsetsTy &getNewOffsets() const = 0;
+
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAAllocationInfo"; }
 
diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
index 1b3bf3c732ed0..e9f700aec5ad2 100644
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -11,6 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/ADT/DenseMap.h"
 #include "llvm/Transforms/IPO/Attributor.h"
 
 #include "llvm/ADT/APInt.h"
@@ -72,9 +73,12 @@
 #include "llvm/Transforms/Utils/Local.h"
 #include "llvm/Transforms/Utils/ValueMapper.h"
 #include <cassert>
+#include <climits>
+#include <cstdint>
 #include <numeric>
 #include <optional>
 #include <string>
+#include <utility>
 
 using namespace llvm;
 
@@ -419,7 +423,8 @@ struct AAReturnedFromReturnedValues : public BaseType {
   /// See AbstractAttribute::updateImpl(...).
   ChangeStatus updateImpl(Attributor &A) override {
     StateType S(StateType::getBestState(this->getState()));
-    clampReturnedValueStates<AAType, StateType, IRAttributeKind, RecurseForSelectAndPHI>(
+    clampReturnedValueStates<AAType, StateType, IRAttributeKind,
+                             RecurseForSelectAndPHI>(
         A, *this, S,
         PropagateCallBaseContext ? this->getCallBaseContext() : nullptr);
     // TODO: If we know we visited all returned values, thus no are assumed
@@ -1083,6 +1088,10 @@ struct AAPointerInfoImpl
     return State::numOffsetBins();
   }
 
+  virtual const Access &getBinAccess(unsigned Index) const override {
+    return getAccess(Index);
+  }
+
   bool forallInterferingAccesses(
       AA::RangeTy Range,
       function_ref<bool(const AAPointerInfo::Access &, bool)> CB)
@@ -1429,7 +1438,7 @@ struct AAPointerInfoImpl
   void trackPointerInfoStatistics(const IRPosition &IRP) const {}
 
   /// Dump the state into \p O.
-  void dumpState(raw_ostream &O) {
+  virtual void dumpState(raw_ostream &O) const override {
     for (auto &It : OffsetBins) {
       O << "[" << It.first.Offset << "-" << It.first.Offset + It.first.Size
         << "] : " << It.getSecond().size() << "\n";
@@ -6975,10 +6984,9 @@ ChangeStatus AAHeapToStackFunction::updateImpl(Attributor &A) {
     if (AI.LibraryFunctionId != LibFunc___kmpc_alloc_shared) {
       Instruction *CtxI = isa<InvokeInst>(AI.CB) ? AI.CB : AI.CB->getNextNode();
       if (!Explorer || !Explorer->findInContextOf(UniqueFree, CtxI)) {
-        LLVM_DEBUG(
-            dbgs()
-            << "[H2S] unique free call might not be executed with the allocation "
-            << *UniqueFree << "\n");
+        LLVM_DEBUG(dbgs() << "[H2S] unique free call might not be executed "
+                             "with the allocation "
+                          << *UniqueFree << "\n");
         return false;
       }
     }
@@ -10431,11 +10439,12 @@ struct AANoFPClassFloating : public AANoFPClassImpl {
 
 struct AANoFPClassReturned final
     : AAReturnedFromReturnedValues<AANoFPClass, AANoFPClassImpl,
-                                   AANoFPClassImpl::StateType, false, Attribute::None, false> {
+                                   AANoFPClassImpl::StateType, false,
+                                   Attribute::None, false> {
   AANoFPClassReturned(const IRPosition &IRP, Attributor &A)
       : AAReturnedFromReturnedValues<AANoFPClass, AANoFPClassImpl,
-                                     AANoFPClassImpl::StateType, false, Attribute::None, false>(
-            IRP, A) {}
+                                     AANoFPClassImpl::StateType, false,
+                                     Attribute::None, false>(IRP, A) {}
 
   /// See AbstractAttribute::trackStatistics()
   void trackStatistics() const override {
@@ -12692,6 +12701,11 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
     return AssumedAllocatedSize;
   }
 
+  const NewOffsetsTy &getNewOffsets() const override {
+    assert(isValidState() && "the AA is invalid");
+    return NewComputedOffsets;
+  }
+
   std::optional<TypeSize> findInitialAllocationSize(Instruction *I,
                                                     const DataLayout &DL) {
 
@@ -12741,37 +12755,52 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
     if (*AllocationSize == 0)
       return indicatePessimisticFixpoint();
 
-    int64_t BinSize = PI->numOffsetBins();
+    int64_t NumBins = PI->numOffsetBins();
 
-    // TODO: implement for multiple bins
-    if (BinSize > 1)
-      return indicatePessimisticFixpoint();
-
-    if (BinSize == 0) {
+    if (NumBins == 0) {
       auto NewAllocationSize = std::optional<TypeSize>(TypeSize(0, false));
       if (!changeAllocationSize(NewAllocationSize))
         return ChangeStatus::UNCHANGED;
       return ChangeStatus::CHANGED;
     }
 
-    // TODO: refactor this to be part of multiple bin case
-    const auto &It = PI->begin();
+    // For each access bin
+    // Compute its new start Offset and store the results in a new map
+    // (NewOffsetBins).
+    bool UndefOffsets = true;
+    unsigned long PrevBinEndOffset = 0;
+    bool ChangedOffsets = false;
 
-    // TODO: handle if Offset is not zero
-    if (It->first.Offset != 0)
-      return indicatePessimisticFixpoint();
+    for (AAPointerInfo::OffsetBinsTy::const_iterator It = PI->begin();
+         It != PI->end(); It++) {
+      const AA::RangeTy &OldRange = It->getFirst();
 
-    uint64_t SizeOfBin = It->first.Offset + It->first.Size;
+      if (OldRange.offsetOrSizeAreUnknown())
+        continue;
 
-    if (SizeOfBin >= *AllocationSize)
-      return indicatePessimisticFixpoint();
+      unsigned long NewStartOffset = PrevBinEndOffset;
+      unsigned long NewEndOffset = NewStartOffset + OldRange.Size;
+      PrevBinEndOffset = NewEndOffset;
+      UndefOffsets = false;
 
+      ChangedOffsets |= setNewOffsets(OldRange, OldRange.Offset, NewStartOffset,
+                                      OldRange.Size);
+    }
+
+    if (UndefOffsets)
+      return ChangeStatus::UNCHANGED;
+
+    // Set the new size of the allocation, the new size of the Allocation should
+    // be the size of PrevBinEndOffset * 8, in bits.
     auto NewAllocationSize =
-        std::optional<TypeSize>(TypeSize(SizeOfBin * 8, false));
+        std::optional<TypeSize>(TypeSize(PrevBinEndOffset * 8, false));
 
     if (!changeAllocationSize(NewAllocationSize))
       return ChangeStatus::UNCHANGED;
 
+    if (!ChangedOffsets)
+      return ChangeStatus::UNCHANGED;
+
     return ChangeStatus::CHANGED;
   }
 
@@ -12781,31 +12810,63 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
     assert(isValidState() &&
            "Manifest should only be called if the state is valid.");
 
-    Instruction *I = getIRPosition().getCtxI();
+    bool Changed = false;
+    const IRPosition &IRP = getIRPosition();
+    Instruction *I = IRP.getCtxI();
 
-    auto FixedAllocatedSizeInBits = getAllocatedSize()->getFixedValue();
+    // check if simplified values exist
+    SmallVector<AA::ValueAndContext> Values;
+    bool UsedAssumedInformation = false;
+    if (A.getAssumedSimplifiedValues(IRP, *this, Values, AA::AnyScope,
+                                     UsedAssumedInformation)) {
+
+      bool HasSimplifiedValue = false;
+      for (auto &ValAndContext : Values) {
+        // if any simplified values exist other than the original instruction,
+        // we should
+        //  not modify this alloca.
+        if (ValAndContext.getValue() && ValAndContext.getValue() != I) {
+          HasSimplifiedValue = true;
+          break;
+        }
+      }
 
-    unsigned long NumBytesToAllocate = (FixedAllocatedSizeInBits + 7) / 8;
+      if (HasSimplifiedValue)
+        return ChangeStatus::UNCHANGED;
+    }
 
+    if (getAllocatedSize() == HasNoAllocationSize)
+      return llvm::ChangeStatus::UNCHANGED;
+
+    unsigned long FixedAllocatedSizeInBits =
+        getAllocatedSize()->getFixedValue();
+
+    unsigned long NumBytesToAllocate = (FixedAllocatedSizeInBits + 7) / 8;
     switch (I->getOpcode()) {
     // TODO: add case for malloc like calls
     case Instruction::Alloca: {
 
       AllocaInst *AI = cast<AllocaInst>(I);
 
+      const DataLayout &DL = A.getDataLayout();
+      auto OriginalAllocationSize = AI->getAllocationSizeInBits(DL);
+
+      if (*OriginalAllocationSize <= FixedAllocatedSizeInBits) {
+        return ChangeStatus::UNCHANGED;
+      }
+
       Type *CharType = Type::getInt8Ty(I->getContext());
 
-      auto *NumBytesToValue =
-          ConstantInt::get(I->getContext(), APInt(32, NumBytesToAllocate));
+      Type *CharArrayType = ArrayType::get(CharType, NumBytesToAllocate);
 
-      BasicBlock::iterator insertPt = AI->getIterator();
-      insertPt = std::next(insertPt);
-      AllocaInst *NewAllocaInst =
-          new AllocaInst(CharType, AI->getAddressSpace(), NumBytesToValue,
-                         AI->getAlign(), AI->getName(), insertPt);
+      BasicBlock::iterator InsertPt = AI->getIterator();
+      InsertPt = std::next(InsertPt);
+      AllocaInst *NewAllocaInst = new AllocaInst(
+          CharArrayType, AI->getAddressSpace(), AI->getName(), InsertPt);
 
-      if (A.changeAfterManifest(IRPosition::inst(*AI), *NewAllocaInst))
-        return ChangeStatus::CHANGED;
+      Changed |= A.changeAfterManifest(IRPosition::inst(*AI), *NewAllocaInst);
+
+      A.deleteAfterManifest(*AI);
 
       break;
     }
@@ -12813,7 +12874,166 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
       break;
     }
 
-    return ChangeStatus::UNCHANGED;
+    const AAPointerInfo *PI =
+        A.getOrCreateAAFor<AAPointerInfo>(IRP, *this, DepClassTy::REQUIRED);
+
+    if (!PI)
+      return ChangeStatus::UNCHANGED;
+
+    if (!PI->getState().isValidState())
+      return ChangeStatus::UNCHANGED;
+
+    const auto &NewOffsetsMap = getNewOffsets();
+
+    // Store a map where each instruction maps to a set of bins accessed by that
+    // instruction.
+    DenseMap<Instruction *, DenseMap<AA::RangeTy, AA::RangeTy>>
+        AccessedInstructionsToBinsMap;
+    for (AAPointerInfo::OffsetBinsTy::const_iterator It = PI->begin();
+         It != PI->end(); It++) {
+
+      const auto &OldOffsetRange = It->getFirst();
+
+      if (OldOffsetRange.offsetOrSizeAreUnknown())
+        continue;
+
+      // If the OldOffsetRange is not in the map, offsets for that bin did not
+      // change We should just continue and skip changing the offsets in that
+      // case
+      if (!NewOffsetsMap.contains(OldOffsetRange))
+        continue;
+
+      const auto &NewOffsetRange = NewOffsetsMap.lookup(OldOffsetRange);
+
+      for (const auto AccIndex : It->getSecond()) {
+        const auto &AccessInstruction = PI->getBinAccess(AccIndex);
+        Instruction *LocalInst = AccessInstruction.getLocalInst();
+        DenseMap<AA::RangeTy, AA::RangeTy> &NewBinsForInstruction =
+            AccessedInstructionsToBinsMap.getOrInsertDefault(LocalInst);
+        NewBinsForInstruction.insert(
+            std::make_pair(OldOffsetRange, NewOffsetRange));
+      }
+    }
+
+    for (auto &It : AccessedInstructionsToBinsMap) {
+
+      Instruction *LocalInst = It.first;
+
+      // If there a potential values that replace the accessed instruction, we
+      // should use those instead.
+      SmallVector<AA::ValueAndContext> Vals;
+
+      if (A.getAssumedSimplifiedValues(IRPosition::inst(*LocalInst), *this,
+                                       Vals, AA::AnyScope,
+                                       UsedAssumedInformation)) {
+
+        bool HasSimplifiedValue = false;
+        for (auto &ValAndContext : Vals) {
+          // don't modify load/store if any simplified value exists
+          if (ValAndContext.getValue() &&
+              ValAndContext.getValue() != LocalInst) {
+            HasSimplifiedValue = true;
+            break;
+          }
+        }
+
+        if (HasSimplifiedValue)
+          continue;
+      }
+
+      // Get a hold of a map, mapping old to new bins
+      DenseMap<AA::RangeTy, AA::RangeTy> &OldToNewBins = It.second;
+
+      int64_t MinOffset = INT_MAX;
+      int64_t MinOffsetOld = INT_MAX;
+
+      for (auto &It2 : OldToNewBins) {
+
+        auto &OldRange = It2.getFirst();
+        auto &NewRange = It2.getSecond();
+
+        if (NewRange.Offset < MinOffset) {
+          MinOffset = NewRange.Offset;
+          MinOffsetOld = OldRange.Offset;
+        }
+      }
+
+      // The number of bytes to shift the load/store by
+      int64_t ShiftValue = MinOffset - MinOffsetOld;
+
+      switch (LocalInst->getOpcode()) {
+      case Instruction::Load: {
+        LoadInst *OldLoadInst = cast<LoadInst>(LocalInst);
+        Value *PointerOperand = OldLoadInst->getPointerOperand();
+        Type *PointeeTy = OldLoadInst->getPointerOperandType();
+
+        IntegerType *Int64TyInteger =
+            IntegerType::get(LocalInst->getContext(), 64);
+
+        Value *IndexList[1] = {ConstantInt::get(Int64TyInteger, ShiftValue)};
+        Value *GepToNewAddress = GetElementPtrInst::Create(
+            PointeeTy, PointerOperand, IndexList, "NewGep", OldLoadInst);
+
+        LoadInst *NewLoadInst = new LoadInst(
+            OldLoadInst->getType(), GepToNewAddress, OldLoadInst->getName(),
+            false, OldLoadInst->getAlign(), OldLoadInst);
+
+        Changed |=
+            A.changeAfterManifest(IRPosition::inst(*OldLoadInst), *NewLoadInst);
+
+        A.deleteAfterManifest(*OldLoadInst);
+        break;
+      }
+      case Instruction::Store: {
+        StoreInst *OldStoreInst = cast<StoreInst>(LocalInst);
+        Value *PointerOperand = OldStoreInst->getPointerOperand();
+        Type *PointeeTy = OldStoreInst->getPointerOperandType();
+
+        IntegerType *Int64TyInteger =
+            IntegerType::get(LocalInst->getContext(), 64);
+
+        Value *IndexList[1] = {ConstantInt::get(Int64TyInteger, ShiftValue)};
+        Value *GepToNewAddress = GetElementPtrInst::Create(
+            PointeeTy, PointerOperand, IndexList, "NewGep", OldStoreInst);
+
+        StoreInst *NewStoreInst =
+            new StoreInst(OldStoreInst->getValueOperand(), GepToNewAddress,
+                          false, OldStoreInst->getAlign(), OldStoreInst);
+
+        Changed |= A.changeAfterManifest(IRPosition::inst(*OldStoreInst),
+                                         *NewStoreInst);
+
+        A.deleteAfterManifest(*OldStoreInst);
+        break;
+      }
+      case Instruction::Call: {
+        CallInst *Call = cast<CallInst>(LocalInst);
+        int ArgPosition = 0;
+        for (const auto &CallArg : Call->args()) {
+          for (const auto &User : I->users()) {
+            if (User == CallArg) {
+              IntegerType *Int64TyInteger =
+                  IntegerType::get(LocalInst->getContext(), 64);
+              Value *IndexList[1] = {
+                  ConstantInt::get(Int64TyInteger, ShiftValue)};
+              Type *UserTy = User->getType();
+              Instruction *UserInstruction = cast<Instruction>(User);
+              Value *GepToNewAddress = GetElementPtrInst::Create(
+                  UserTy, UserInstruction, IndexList, "NewGep", Call);
+              Call->setArgOperand(ArgPosition, GepToNewAddress);
+              break;
+            }
+          }
+          ArgPosition++;
+        }
+        break;
+      }
+      }
+    }
+
+    if (!Changed)
+      return ChangeStatus::UNCHANGED;
+    return ChangeStatus::CHANGED;
   }
 
   /// See AbstractAttribute::getAsStr().
@@ -12827,8 +13047,28 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
            ")";
   }
 
+  void dumpNewOffsetBins(raw_ostream &O) {
+
+    O << "Printing Map from [OldOffsetsRange] : [NewOffsetsRange] if the "
+         "offsets changed."
+      << "\n";
+    const auto &NewOffsetsMap = getNewOffsets();
+    for (auto It = NewOffsetsMap.begin(); It != NewOffsetsMap.end(); It++) {
+
+      const auto &OldRange = It->getFirst();
+      const auto &NewRange = It->getSecond();
+
+      O << "[" << OldRange.Offset << "," << OldRange.Offset + OldRange.Size
+        << "] : ";
+      O << "[" << NewRange.Offset << "," << NewRange.Offset + NewRange.Size
+        << "]";
+      O << "\n";
+    }
+  }
+
 private:
   std::optional<TypeSize> AssumedAllocatedSize = HasNoAllocationSize;
+  NewOffsetsTy NewComputedOffsets;
 
   // Maintain the computed allocation size of the object.
   // Returns (bool) weather the size of the allocation was modified or not.
@@ -12840,6 +13080,21 @@ struct AAAllocationInfoImpl : public AAAllocationInfo {
     }
     return false;
   }
+
+  // Maps an old byte range to its new Offset range in the new allocation.
+  // Returns (bool) weather the old byte range's offsets changed or not.
+  bool setNewOffsets(const AA::RangeTy &OldRange, int64_t OldOffset,
+                     int64_t NewComputedOffset, int64_t Size) {
+
+    if (OldOffset == NewComputedOffset)
+      return false;
+
+    AA::RangeTy &NewRange = NewComputedOffsets.getOrInsertDefault(OldRange);
+    NewRange.Offset = NewComputedOffset;
+    NewRange.Size = Size;
+
+    return true;
+  }
 };
 
 struct AAAllocationInfoFloating : AAAllocationInfoImpl {
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll
index 595cb37c6c93e..f0efa2a0ae3c1 100644
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll
@@ -106,10 +106,8 @@ define i32 @test_inf_promote_caller(i32 %arg) {
 ; CGSCC-LABEL: define {{[^@]+}}@test_inf_promote_caller
 ; CGSCC-SAME: (i32 [[ARG:%.*]]) #[[ATTR3:[0-9]+]] {
 ; CGSCC-NEXT:  bb:
-; CGSCC-NEXT:    [[TMP:%.*]] = alloca [[S:%.*]], align 8
-; CGSCC-NEXT:    [[TMP3:%.*]] = alloca i8, i32 0, align 8
-; CGSCC-NEXT:    [[TMP1:%.*]] = alloca [[S]], align 8
-; CGSCC-NEXT:    [[TMP14:%.*]] = alloca i8, i32 0, align 8
+; CGSCC-NEXT:    [[TMP3:%.*]] = alloca [0 x i8], align 1
+; CGSCC-NEXT:    [[TMP14:%.*]] = alloca [0 x i8], align 1
 ; CGSCC-NEXT:    ret i32 0
 ;
 bb:
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll
index 2df81d6cb1832..63dbc4da7da37 100644
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll
@@ -36,9 +36,7 @@ define internal i32 @caller(ptr %B) {
 ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
 ; CGSCC-LABEL: define {{[^@]+}}@caller
 ; CGSCC-SAME: () #[[ATTR0]] {
-; CGSCC-NEXT:    [[A:%.*]] = alloca i32, align 4
-; CGSCC-NEXT:    [[A2:%.*]] = alloca i8, i32 0, align 4
-; CGSCC-NEXT:    [[A1:%.*]] = alloca i8, i32 0, align 4
+; CGSCC-NEXT:    [[A1:%.*]] = alloca [0 x i8], align 1
 ; CGSCC-NEXT:    ret i32 0
 ;
   %A = alloca i32
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll
index 7c28de24beea2..956fa0e88b028 100644
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll
@@ -53,9 +53,7 @@ define internal i32 @caller(ptr %B) {
 ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write)
 ; CGSCC-LABEL: define {{[^@]+}}@caller
 ; CGSCC-SAME: (ptr noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B:%.*]]) #[[ATTR0]] {
-; CGSCC-NEXT:    [[A:%.*]] = alloca i32, align 4
-; CGSCC-NEXT:    [[A2:%.*]] = alloca i8, i32 0, align 4
-; CGSCC-NEXT:    [[A1:%.*]] = alloca i8, i32 0, align 4
+; CGSCC-NEXT:    [[A1:%.*]] = alloca [0 x i8], align 1
 ; CGSCC-NEXT:    [[C:%.*]] = call i32 @test(ptr noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) #[[ATTR2:[0-9]+]]
 ; CGSCC-NEXT:    ret i32 0
 ;
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/nonzero-address-spaces.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/nonzero-address-spaces.ll
index b588a399e5bd9..7b5e1276ac212 100644
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/nonzero-address-spaces.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/nonzero-address-spaces.ll
@@ -29,8 +29,7 @@ define internal i32 @foo(ptr) {
 ; CHECK-LABEL: define {{[^@]+}}@foo
 ; CHECK-SAME: () addrspace(1) #[[ATTR0:[0-9]+]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[RETVAL:%.*]] = alloca i32, align 4
-; CHECK-NEXT:    [[RETVAL1:%.*]] = alloca i8, i32 0, align 4
+; CHECK-NEXT:    [[RETVAL1:%.*]] = alloca [0 x i8], align 1
 ; CHECK-NEXT:    call addrspace(0) void asm sideeffect "ldr r0, [r0] \0Abx lr \0A", ""()
 ; CHECK-NEXT:    unreachable
 ;
diff --git a/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll b/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll
index 490894d129023..af2d1ef1eabba 100644
--- a/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll
+++ b/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll
@@ -34,8 +34,8 @@ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 define dso_local i32 @main() {
 ; TUNIT-LABEL: define {{[^@]+}}@main() {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[ALLOC11:%.*]] = alloca i8, i32 0, align 8
-; TUNIT-NEXT:    [[ALLOC22:%.*]] = alloca i8, i32 0, align 8
+; TUNIT-NEXT:    [[ALLOC11:%.*]] = alloca [0 x i8], align 1
+; TUNIT-NEXT:    [[ALLOC22:%.*]] = alloca [0 x i8], align 1
 ; TUNIT-NEXT:    [[THREAD:%.*]] = alloca i64, align 8
 ; TUNIT-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(ptr noundef nonnull align 8 dereferenceable(8) [[THREAD]], ptr noundef align 4294967296 null, ptr noundef nonnull @foo, ptr nofree readnone align 4294967296 undef)
 ; TUNIT-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(ptr noundef nonnull align 8 dereferenceable(8) [[THREAD]], ptr noundef align 4294967296 null, ptr noundef nonnull @bar, ptr noalias nocapture nofree nonnull readnone align 8 dereferenceable(8) undef)
diff --git a/llvm/test/Transforms/Attributor/allocator.ll b/llvm/test/Transforms/Attributor/allocator.ll
index f2d9ecd1d8fa4..1c6cd32a539c5 100644
--- a/llvm/test/Transforms/Attributor/allocator.ll
+++ b/llvm/test/Transforms/Attributor/allocator.ll
@@ -13,8 +13,8 @@ define dso_local void @positive_alloca_1(i32 noundef %val) #0 {
 ; CHECK-LABEL: define dso_local void @positive_alloca_1
 ; CHECK-SAME: (i32 noundef [[VAL:%.*]]) {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[VAL_ADDR1:%.*]] = alloca i8, i32 4, align 4
-; CHECK-NEXT:    [[F2:%.*]] = alloca i8, i32 4, align 4
+; CHECK-NEXT:    [[VAL_ADDR1:%.*]] = alloca [4 x i8], align 1
+; CHECK-NEXT:    [[F2:%.*]] = alloca [4 x i8], align 1
 ; CHECK-NEXT:    store i32 [[VAL]], ptr [[VAL_ADDR1]], align 4
 ; CHECK-NEXT:    store i32 10, ptr [[F2]], align 4
 ; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[F2]], align 4
@@ -164,37 +164,54 @@ entry:
 ;TODO: The allocation can be reduced here.
 ;However, the offsets (load/store etc.) Need to be changed.
 ; Function Attrs: noinline nounwind uwtable
-define dso_local { i64, ptr } @positive_test_not_a_single_start_offset(i32 noundef %val) #0 {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
-; CHECK-LABEL: define dso_local { i64, ptr } @positive_test_not_a_single_start_offset
-; CHECK-SAME: (i32 noundef [[VAL:%.*]]) #[[ATTR0:[0-9]+]] {
+define dso_local void @positive_test_not_a_single_start_offset(i32 noundef %val) #0 {
+; CHECK-LABEL: define dso_local void @positive_test_not_a_single_start_offset
+; CHECK-SAME: (i32 noundef [[VAL:%.*]]) {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[RETVAL:%.*]] = alloca [[STRUCT_FOO:%.*]], align 8
 ; CHECK-NEXT:    [[VAL_ADDR:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[F1:%.*]] = alloca [5 x i8], align 1
 ; CHECK-NEXT:    store i32 [[VAL]], ptr [[VAL_ADDR]], align 4
-; CHECK-NEXT:    store i32 2, ptr [[RETVAL]], align 8
-; CHECK-NEXT:    [[FIELD3:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[RETVAL]], i32 0, i32 2
-; CHECK-NEXT:    store ptr [[VAL_ADDR]], ptr [[FIELD3]], align 8
-; CHECK-NEXT:    [[TMP0:%.*]] = load { i64, ptr }, ptr [[RETVAL]], align 8
-; CHECK-NEXT:    ret { i64, ptr } [[TMP0]]
+; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 2, [[VAL]]
+; CHECK-NEXT:    store i32 [[MUL]], ptr [[F1]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[F1]], align 4
+; CHECK-NEXT:    [[CALL:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(17) @.str, i32 noundef [[TMP0]])
+; CHECK-NEXT:    [[C:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr [[F1]], i32 0, i32 2
+; CHECK-NEXT:    [[CONV1:%.*]] = trunc i32 [[TMP0]] to i8
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[C]], i64 -4
+; CHECK-NEXT:    store i8 [[CONV1]], ptr [[NEWGEP]], align 4
+; CHECK-NEXT:    [[C2:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[F1]], i32 0, i32 2
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[C2]], i64 -4
+; CHECK-NEXT:    [[TMP1:%.*]] = load i8, ptr [[NEWGEP2]], align 4
+; CHECK-NEXT:    [[CONV:%.*]] = sext i8 [[TMP1]] to i32
+; CHECK-NEXT:    [[CALL3:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(17) @.str, i32 noundef [[CONV]])
+; CHECK-NEXT:    ret void
 ;
 entry:
-  %retval = alloca %struct.Foo, align 8
   %val.addr = alloca i32, align 4
+  %f = alloca %struct.Foo, align 4
   store i32 %val, ptr %val.addr, align 4
-  %field1 = getelementptr inbounds %struct.Foo, ptr %retval, i32 0, i32 0
-  store i32 2, ptr %field1, align 8
-  %field3 = getelementptr inbounds %struct.Foo, ptr %retval, i32 0, i32 2
-  store ptr %val.addr, ptr %field3, align 8
-  %0 = load { i64, ptr }, ptr %retval, align 8
-  ret { i64, ptr } %0
+  %0 = load i32, ptr %val.addr, align 4
+  %mul = mul nsw i32 2, %0
+  %a = getelementptr inbounds %struct.Foo, ptr %f, i32 0, i32 0
+  store i32 %mul, ptr %a, align 4
+  %a1 = getelementptr inbounds %struct.Foo, ptr %f, i32 0, i32 0
+  %1 = load i32, ptr %a1, align 4
+  %call = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %1)
+  %c = getelementptr inbounds %struct.Foo, ptr %f, i32 0, i32 2
+  %conv1 = trunc i32 %1 to i8
+  store i8 %conv1, ptr %c, align 4
+  %c2 = getelementptr inbounds %struct.Foo, ptr %f, i32 0, i32 2
+  %2 = load i8, ptr %c2, align 4
+  %conv = sext i8 %2 to i32
+  %call3 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %conv)
+  ret void
 }
 
 ; Function Attrs: noinline nounwind uwtable
 define dso_local void @positive_test_reduce_array_allocation_1() {
 ; CHECK-LABEL: define dso_local void @positive_test_reduce_array_allocation_1() {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[ARRAY1:%.*]] = alloca i8, i32 4, align 8
+; CHECK-NEXT:    [[ARRAY1:%.*]] = alloca [4 x i8], align 1
 ; CHECK-NEXT:    store i32 0, ptr [[ARRAY1]], align 8
 ; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAY1]], align 8
 ; CHECK-NEXT:    [[TMP1:%.*]] = add i32 [[TMP0]], 2
@@ -275,37 +292,37 @@ entry:
 define dso_local void @positive_test_reduce_array_allocation_2() #0 {
 ; CHECK-LABEL: define dso_local void @positive_test_reduce_array_allocation_2() {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[ARRAY:%.*]] = alloca ptr, align 8
-; CHECK-NEXT:    [[I:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[ARRAY1:%.*]] = alloca ptr, align 8
+; CHECK-NEXT:    [[I2:%.*]] = alloca i32, align 4
 ; CHECK-NEXT:    [[CALL:%.*]] = call noalias ptr @malloc(i64 noundef 40000)
-; CHECK-NEXT:    store ptr [[CALL]], ptr [[ARRAY]], align 8
-; CHECK-NEXT:    store i32 0, ptr [[I]], align 4
+; CHECK-NEXT:    store ptr [[CALL]], ptr [[ARRAY1]], align 8
+; CHECK-NEXT:    store i32 0, ptr [[I2]], align 4
 ; CHECK-NEXT:    br label [[FOR_COND:%.*]]
 ; CHECK:       for.cond:
-; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[TMP0]], 10000
 ; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
 ; CHECK:       for.body:
-; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[I]], align 4
-; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[I2]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[IDXPROM:%.*]] = sext i32 [[TMP2]] to i64
 ; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[CALL]], i64 [[IDXPROM]]
 ; CHECK-NEXT:    store i32 [[TMP1]], ptr [[ARRAYIDX]], align 4
 ; CHECK-NEXT:    br label [[FOR_INC:%.*]]
 ; CHECK:       for.inc:
-; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP3]], 2
-; CHECK-NEXT:    store i32 [[ADD]], ptr [[I]], align 4
+; CHECK-NEXT:    store i32 [[ADD]], ptr [[I2]], align 4
 ; CHECK-NEXT:    br label [[FOR_COND]]
 ; CHECK:       for.end:
-; CHECK-NEXT:    store i32 0, ptr [[I]], align 4
+; CHECK-NEXT:    store i32 0, ptr [[I2]], align 4
 ; CHECK-NEXT:    br label [[FOR_COND1:%.*]]
 ; CHECK:       for.cond1:
-; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[CMP2:%.*]] = icmp slt i32 [[TMP4]], 10000
 ; CHECK-NEXT:    br i1 [[CMP2]], label [[FOR_BODY3:%.*]], label [[FOR_END9:%.*]]
 ; CHECK:       for.body3:
-; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[IDXPROM4:%.*]] = sext i32 [[TMP5]] to i64
 ; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, ptr [[CALL]], i64 [[IDXPROM4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = load i32, ptr [[ARRAYIDX5]], align 4
@@ -313,28 +330,28 @@ define dso_local void @positive_test_reduce_array_allocation_2() #0 {
 ; CHECK-NEXT:    store i32 [[ADD6]], ptr [[ARRAYIDX5]], align 4
 ; CHECK-NEXT:    br label [[FOR_INC7:%.*]]
 ; CHECK:       for.inc7:
-; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[ADD8:%.*]] = add nsw i32 [[TMP7]], 2
-; CHECK-NEXT:    store i32 [[ADD8]], ptr [[I]], align 4
+; CHECK-NEXT:    store i32 [[ADD8]], ptr [[I2]], align 4
 ; CHECK-NEXT:    br label [[FOR_COND1]]
 ; CHECK:       for.end9:
-; CHECK-NEXT:    store i32 0, ptr [[I]], align 4
+; CHECK-NEXT:    store i32 0, ptr [[I2]], align 4
 ; CHECK-NEXT:    br label [[FOR_COND10:%.*]]
 ; CHECK:       for.cond10:
-; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[CMP11:%.*]] = icmp slt i32 [[TMP8]], 10000
 ; CHECK-NEXT:    br i1 [[CMP11]], label [[FOR_BODY12:%.*]], label [[FOR_END18:%.*]]
 ; CHECK:       for.body12:
-; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[IDXPROM13:%.*]] = sext i32 [[TMP9]] to i64
 ; CHECK-NEXT:    [[ARRAYIDX14:%.*]] = getelementptr inbounds i32, ptr [[CALL]], i64 [[IDXPROM13]]
 ; CHECK-NEXT:    [[TMP10:%.*]] = load i32, ptr [[ARRAYIDX14]], align 4
 ; CHECK-NEXT:    [[CALL15:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(17) @.str, i32 noundef [[TMP10]])
 ; CHECK-NEXT:    br label [[FOR_INC16:%.*]]
 ; CHECK:       for.inc16:
-; CHECK-NEXT:    [[TMP11:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[TMP11:%.*]] = load i32, ptr [[I2]], align 4
 ; CHECK-NEXT:    [[ADD17:%.*]] = add nsw i32 [[TMP11]], 2
-; CHECK-NEXT:    store i32 [[ADD17]], ptr [[I]], align 4
+; CHECK-NEXT:    store i32 [[ADD17]], ptr [[I2]], align 4
 ; CHECK-NEXT:    br label [[FOR_COND10]]
 ; CHECK:       for.end18:
 ; CHECK-NEXT:    ret void
@@ -426,7 +443,7 @@ define dso_local void @pthread_test(){
 ; TUNIT-NEXT:    [[ARG1:%.*]] = alloca i8, align 8
 ; TUNIT-NEXT:    [[THREAD:%.*]] = alloca i64, align 8
 ; TUNIT-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(ptr noundef nonnull align 8 dereferenceable(8) [[THREAD]], ptr noundef align 4294967296 null, ptr noundef nonnull @pthread_allocation_should_remain_same, ptr noundef nonnull align 8 dereferenceable(1) [[ARG1]])
-; TUNIT-NEXT:    [[F1:%.*]] = alloca i8, i32 4, align 4
+; TUNIT-NEXT:    [[F1:%.*]] = alloca [4 x i8], align 1
 ; TUNIT-NEXT:    [[CALL2:%.*]] = call i32 @pthread_create(ptr noundef nonnull align 8 dereferenceable(8) [[THREAD]], ptr noundef align 4294967296 null, ptr noundef nonnull @pthread_allocation_should_be_reduced, ptr noalias nocapture nofree nonnull readnone align 4 dereferenceable(12) undef)
 ; TUNIT-NEXT:    [[F2:%.*]] = alloca [[STRUCT_FOO:%.*]], align 4
 ; TUNIT-NEXT:    [[CALL3:%.*]] = call i32 @pthread_create(ptr noundef nonnull align 8 dereferenceable(8) [[THREAD]], ptr noundef align 4294967296 null, ptr noundef nonnull @pthread_check_captured_pointer, ptr noundef nonnull align 4 dereferenceable(12) [[F2]])
@@ -499,6 +516,58 @@ entry:
   ret void
 }
 
+define dso_local void @alloca_array_multi_offset(){
+; CHECK: Function Attrs: nofree norecurse nosync nounwind memory(none)
+; CHECK-LABEL: define dso_local void @alloca_array_multi_offset
+; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[I:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 0, ptr [[I]], align 4
+; CHECK-NEXT:    br label [[FOR_COND:%.*]]
+; CHECK:       for.cond:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[TMP0]], 10
+; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
+; CHECK:       for.body:
+; CHECK-NEXT:    br label [[FOR_INC:%.*]]
+; CHECK:       for.inc:
+; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[I]], align 4
+; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP1]], 2
+; CHECK-NEXT:    store i32 [[ADD]], ptr [[I]], align 4
+; CHECK-NEXT:    br label [[FOR_COND]]
+; CHECK:       for.end:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %arr = alloca i8, i32 10, align 4
+  %i = alloca i32, align 4
+  store i32 0, ptr %i, align 4
+  br label %for.cond
+
+for.cond:
+  %0 = load i32, ptr %i, align 4
+  %cmp = icmp slt i32 %0, 10
+  br i1 %cmp, label %for.body, label %for.end
+
+for.body:
+  %1 = load i32, ptr %i, align 4
+  %2 = load ptr, ptr %arr, align 8
+  %3 = load i32, ptr %i, align 4
+  %arrayidx = getelementptr inbounds i32, ptr %2, i32 %3
+  store i32 %1, ptr %arrayidx, align 4
+  br label %for.inc
+
+for.inc:
+  %4 = load i32, ptr %i, align 4
+  %add = add nsw i32 %4, 2
+  store i32 %add, ptr %i, align 4
+  br label %for.cond
+
+for.end:
+  ret void
+
+}
+
 
 declare external void @external_call(ptr)
 
@@ -511,9 +580,9 @@ declare i32 @printf(ptr noundef, ...) #1
 ; Function Attrs: nounwind allocsize(0)
 declare noalias ptr @malloc(i64 noundef) #1
 ;.
-; TUNIT: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) }
+; TUNIT: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind memory(none) }
 ;.
-; CGSCC: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) }
+; CGSCC: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind memory(none) }
 ;.
 ; TUNIT: [[META0:![0-9]+]] = !{[[META1:![0-9]+]]}
 ; TUNIT: [[META1]] = !{i64 2, i64 3, i1 false}
diff --git a/llvm/test/Transforms/Attributor/call-simplify-pointer-info.ll b/llvm/test/Transforms/Attributor/call-simplify-pointer-info.ll
index 5bb795911ce40..7486625095492 100644
--- a/llvm/test/Transforms/Attributor/call-simplify-pointer-info.ll
+++ b/llvm/test/Transforms/Attributor/call-simplify-pointer-info.ll
@@ -36,8 +36,10 @@ define i8 @call_simplifiable_1() {
 ; TUNIT-LABEL: define {{[^@]+}}@call_simplifiable_1
 ; TUNIT-SAME: () #[[ATTR0:[0-9]+]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    [[I0:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 2
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [1 x i8], align 1
+; TUNIT-NEXT:    [[I0:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 2
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[I0]], i64 -2
+; TUNIT-NEXT:    store i8 2, ptr [[NEWGEP]], align 2
 ; TUNIT-NEXT:    ret i8 2
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
@@ -93,9 +95,13 @@ define i8 @call_simplifiable_2() {
 ; TUNIT-LABEL: define {{[^@]+}}@call_simplifiable_2
 ; TUNIT-SAME: () #[[ATTR0]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    [[I0:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 2
-; TUNIT-NEXT:    [[I1:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 3
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [2 x i8], align 1
+; TUNIT-NEXT:    [[I0:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 2
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[I0]], i64 -2
+; TUNIT-NEXT:    store i8 2, ptr [[NEWGEP]], align 2
+; TUNIT-NEXT:    [[I1:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 3
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[I1]], i64 -2
+; TUNIT-NEXT:    store i8 3, ptr [[NEWGEP2]], align 1
 ; TUNIT-NEXT:    ret i8 4
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
@@ -125,8 +131,10 @@ define i8 @call_simplifiable_3() {
 ; TUNIT-LABEL: define {{[^@]+}}@call_simplifiable_3
 ; TUNIT-SAME: () #[[ATTR0]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    [[I2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 2
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [1 x i8], align 1
+; TUNIT-NEXT:    [[I2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 2
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[I2]], i64 -2
+; TUNIT-NEXT:    store i8 2, ptr [[NEWGEP]], align 2
 ; TUNIT-NEXT:    ret i8 2
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
@@ -198,13 +206,19 @@ define i8 @call_partially_simplifiable_1() {
 ; TUNIT-LABEL: define {{[^@]+}}@call_partially_simplifiable_1
 ; TUNIT-SAME: () #[[ATTR0]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    [[I2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 2
-; TUNIT-NEXT:    store i8 2, ptr [[I2]], align 2
-; TUNIT-NEXT:    [[I3:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 3
-; TUNIT-NEXT:    store i8 3, ptr [[I3]], align 1
-; TUNIT-NEXT:    [[I4:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 4
-; TUNIT-NEXT:    [[R:%.*]] = call i8 @sum_two_different_loads(ptr nocapture nofree noundef nonnull readonly align 2 dereferenceable(1022) [[I2]], ptr nocapture nofree noundef nonnull readonly dereferenceable(1021) [[I3]]) #[[ATTR3]]
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; TUNIT-NEXT:    [[I2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 2
+; TUNIT-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[I2]], i64 -2
+; TUNIT-NEXT:    store i8 2, ptr [[NEWGEP3]], align 2
+; TUNIT-NEXT:    [[I3:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 3
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[I3]], i64 -1
+; TUNIT-NEXT:    store i8 3, ptr [[NEWGEP2]], align 1
+; TUNIT-NEXT:    [[I4:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 4
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[I4]], i64 -3
+; TUNIT-NEXT:    store i8 4, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    [[NEWGEP4:%.*]] = getelementptr ptr, ptr [[I2]], i64 -2
+; TUNIT-NEXT:    [[NEWGEP5:%.*]] = getelementptr ptr, ptr [[I3]], i64 -2
+; TUNIT-NEXT:    [[R:%.*]] = call i8 @sum_two_different_loads(ptr nocapture nofree noundef nonnull readonly align 2 dereferenceable(1022) [[NEWGEP4]], ptr nocapture nofree noundef nonnull readonly dereferenceable(1021) [[NEWGEP5]]) #[[ATTR3]]
 ; TUNIT-NEXT:    ret i8 [[R]]
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
@@ -239,15 +253,20 @@ define i8 @call_partially_simplifiable_2(i1 %cond) {
 ; TUNIT-LABEL: define {{[^@]+}}@call_partially_simplifiable_2
 ; TUNIT-SAME: (i1 [[COND:%.*]]) #[[ATTR2:[0-9]+]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    [[I51:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 51
-; TUNIT-NEXT:    [[I52:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 52
-; TUNIT-NEXT:    store i8 2, ptr [[I52]], align 4
-; TUNIT-NEXT:    [[I53:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 53
-; TUNIT-NEXT:    store i8 3, ptr [[I53]], align 1
-; TUNIT-NEXT:    [[I54:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 54
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [4 x i8], align 1
+; TUNIT-NEXT:    [[I51:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 51
+; TUNIT-NEXT:    [[I52:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 52
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[I52]], i64 -52
+; TUNIT-NEXT:    store i8 2, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    [[I53:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 53
+; TUNIT-NEXT:    [[NEWGEP4:%.*]] = getelementptr ptr, ptr [[I53]], i64 -50
+; TUNIT-NEXT:    store i8 3, ptr [[NEWGEP4]], align 1
+; TUNIT-NEXT:    [[I54:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 54
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[I54]], i64 -53
+; TUNIT-NEXT:    store i8 4, ptr [[NEWGEP2]], align 2
 ; TUNIT-NEXT:    [[SEL:%.*]] = select i1 [[COND]], ptr [[I51]], ptr [[I52]]
-; TUNIT-NEXT:    [[R:%.*]] = call i8 @sum_two_different_loads(ptr nocapture nofree nonnull readonly dereferenceable(972) [[SEL]], ptr nocapture nofree noundef nonnull readonly dereferenceable(971) [[I53]]) #[[ATTR3]]
+; TUNIT-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[I53]], i64 -52
+; TUNIT-NEXT:    [[R:%.*]] = call i8 @sum_two_different_loads(ptr nocapture nofree nonnull readonly dereferenceable(972) [[SEL]], ptr nocapture nofree noundef nonnull readonly dereferenceable(971) [[NEWGEP3]]) #[[ATTR3]]
 ; TUNIT-NEXT:    ret i8 [[R]]
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn
diff --git a/llvm/test/Transforms/Attributor/heap_to_stack.ll b/llvm/test/Transforms/Attributor/heap_to_stack.ll
index 33ac066e43d09..846373e05be1a 100644
--- a/llvm/test/Transforms/Attributor/heap_to_stack.ll
+++ b/llvm/test/Transforms/Attributor/heap_to_stack.ll
@@ -502,8 +502,7 @@ define i32 @malloc_in_loop(i32 %arg) {
 ; CHECK-SAME: (i32 [[ARG:%.*]]) {
 ; CHECK-NEXT:  bb:
 ; CHECK-NEXT:    [[I:%.*]] = alloca i32, align 4
-; CHECK-NEXT:    [[I1:%.*]] = alloca ptr, align 8
-; CHECK-NEXT:    [[I11:%.*]] = alloca i8, i32 0, align 8
+; CHECK-NEXT:    [[I11:%.*]] = alloca [0 x i8], align 1
 ; CHECK-NEXT:    store i32 [[ARG]], ptr [[I]], align 4
 ; CHECK-NEXT:    br label [[BB2:%.*]]
 ; CHECK:       bb2:
diff --git a/llvm/test/Transforms/Attributor/heap_to_stack_gpu.ll b/llvm/test/Transforms/Attributor/heap_to_stack_gpu.ll
index 2a5b3e94291a2..70aace8100abd 100644
--- a/llvm/test/Transforms/Attributor/heap_to_stack_gpu.ll
+++ b/llvm/test/Transforms/Attributor/heap_to_stack_gpu.ll
@@ -452,8 +452,7 @@ define i32 @malloc_in_loop(i32 %arg) {
 ; CHECK-SAME: (i32 [[ARG:%.*]]) {
 ; CHECK-NEXT:  bb:
 ; CHECK-NEXT:    [[I:%.*]] = alloca i32, align 4
-; CHECK-NEXT:    [[I1:%.*]] = alloca ptr, align 8
-; CHECK-NEXT:    [[I11:%.*]] = alloca i8, i32 0, align 8
+; CHECK-NEXT:    [[I11:%.*]] = alloca [0 x i8], align 1
 ; CHECK-NEXT:    store i32 [[ARG]], ptr [[I]], align 4
 ; CHECK-NEXT:    br label [[BB2:%.*]]
 ; CHECK:       bb2:
diff --git a/llvm/test/Transforms/Attributor/liveness.ll b/llvm/test/Transforms/Attributor/liveness.ll
index f17bd5795a174..9eb79f8a46723 100644
--- a/llvm/test/Transforms/Attributor/liveness.ll
+++ b/llvm/test/Transforms/Attributor/liveness.ll
@@ -2587,8 +2587,8 @@ define void @bad_gep() {
 ; TUNIT-LABEL: define {{[^@]+}}@bad_gep
 ; TUNIT-SAME: () #[[ATTR13]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[N1:%.*]] = alloca i8, i32 0, align 1
-; TUNIT-NEXT:    [[M2:%.*]] = alloca i8, i32 0, align 1
+; TUNIT-NEXT:    [[N1:%.*]] = alloca [0 x i8], align 1
+; TUNIT-NEXT:    [[M2:%.*]] = alloca [0 x i8], align 1
 ; TUNIT-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 1, ptr noalias nocapture nofree noundef nonnull dereferenceable(1) [[N1]]) #[[ATTR18:[0-9]+]]
 ; TUNIT-NEXT:    br label [[EXIT:%.*]]
 ; TUNIT:       while.body:
@@ -2605,8 +2605,8 @@ define void @bad_gep() {
 ; CGSCC-LABEL: define {{[^@]+}}@bad_gep
 ; CGSCC-SAME: () #[[ATTR6]] {
 ; CGSCC-NEXT:  entry:
-; CGSCC-NEXT:    [[N1:%.*]] = alloca i8, i32 0, align 1
-; CGSCC-NEXT:    [[M2:%.*]] = alloca i8, i32 0, align 1
+; CGSCC-NEXT:    [[N1:%.*]] = alloca [0 x i8], align 1
+; CGSCC-NEXT:    [[M2:%.*]] = alloca [0 x i8], align 1
 ; CGSCC-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 1, ptr noalias nocapture nofree noundef nonnull dereferenceable(1) [[N1]]) #[[ATTR21:[0-9]+]]
 ; CGSCC-NEXT:    br label [[EXIT:%.*]]
 ; CGSCC:       while.body:
diff --git a/llvm/test/Transforms/Attributor/multiple-offsets-pointer-info.ll b/llvm/test/Transforms/Attributor/multiple-offsets-pointer-info.ll
index c6945d65acb29..a120524026378 100644
--- a/llvm/test/Transforms/Attributor/multiple-offsets-pointer-info.ll
+++ b/llvm/test/Transforms/Attributor/multiple-offsets-pointer-info.ll
@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
-; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal  -attributor-annotate-decl-cs  -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
-; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC
+; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-annotate-decl-cs  -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
+; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC
 
 %struct.T = type { i32, [10 x [20 x i8]] }
 
@@ -50,20 +50,26 @@ define i8 @select_offsets_simplifiable_2(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@select_offsets_simplifiable_2
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1:[0-9]+]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
-; CHECK-NEXT:    store i8 23, ptr [[GEP23]], align 4
-; CHECK-NEXT:    [[GEP29:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 29
-; CHECK-NEXT:    store i8 29, ptr [[GEP29]], align 4
-; CHECK-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 7
-; CHECK-NEXT:    store i8 7, ptr [[GEP7]], align 4
-; CHECK-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 31
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [4 x i8], align 1
+; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -22
+; CHECK-NEXT:    store i8 23, ptr [[NEWGEP]], align 4
+; CHECK-NEXT:    [[GEP29:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 29
+; CHECK-NEXT:    [[NEWGEP5:%.*]] = getelementptr ptr, ptr [[GEP29]], i64 -27
+; CHECK-NEXT:    store i8 29, ptr [[NEWGEP5]], align 4
+; CHECK-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 7
+; CHECK-NEXT:    [[NEWGEP4:%.*]] = getelementptr ptr, ptr [[GEP7]], i64 -4
+; CHECK-NEXT:    store i8 7, ptr [[NEWGEP4]], align 4
+; CHECK-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 31
+; CHECK-NEXT:    [[NEWGEP6:%.*]] = getelementptr ptr, ptr [[GEP31]], i64 -31
+; CHECK-NEXT:    store i8 42, ptr [[NEWGEP6]], align 4
 ; CHECK-NEXT:    [[SEL0:%.*]] = select i1 [[CND1]], i64 20, i64 26
 ; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CND2]], i64 [[SEL0]], i64 4
-; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[SEL1]]
+; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[SEL1]]
 ; CHECK-NEXT:    [[GEP_PLUS:%.*]] = getelementptr inbounds i8, ptr [[GEP_SEL]], i64 3
-; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[GEP_PLUS]], align 4
-; CHECK-NEXT:    ret i8 [[I]]
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP_PLUS]], i64 -22
+; CHECK-NEXT:    [[I3:%.*]] = load i8, ptr [[NEWGEP2]], align 4
+; CHECK-NEXT:    ret i8 [[I3]]
 ;
 entry:
   %Bytes = alloca [1024 x i8], align 16
@@ -93,10 +99,15 @@ define i8 @select_offsets_simplifiable_3(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@select_offsets_simplifiable_3
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BUNDLE:%.*]] = alloca [[STRUCT_T:%.*]], align 64
+; CHECK-NEXT:    [[BUNDLE1:%.*]] = alloca [5 x i8], align 1
+; CHECK-NEXT:    [[GEP_FIXED:%.*]] = getelementptr inbounds [[STRUCT_T:%.*]], ptr [[BUNDLE1]], i64 0, i32 1, i64 1, i64 1
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_FIXED]], i64 -22
+; CHECK-NEXT:    store i8 100, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CND1]], i64 1, i64 3
 ; CHECK-NEXT:    [[SEL2:%.*]] = select i1 [[CND2]], i64 5, i64 11
-; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [[STRUCT_T]], ptr [[BUNDLE]], i64 0, i32 1, i64 [[SEL1]], i64 [[SEL2]]
+; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [[STRUCT_T]], ptr [[BUNDLE1]], i64 0, i32 1, i64 [[SEL1]], i64 [[SEL2]]
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP_SEL]], i64 -69
+; CHECK-NEXT:    store i8 42, ptr [[NEWGEP2]], align 4
 ; CHECK-NEXT:    ret i8 100
 ;
 entry:
@@ -117,10 +128,12 @@ define i8 @select_offsets_simplifiable_4(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@select_offsets_simplifiable_4
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
 ; CHECK-NEXT:    [[SEL0:%.*]] = select i1 [[CND1]], i64 23, i64 29
 ; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CND2]], i64 [[SEL0]], i64 7
-; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[SEL1]]
+; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[SEL1]]
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_SEL]], i64 -23
+; CHECK-NEXT:    store i8 100, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    ret i8 100
 ;
 entry:
@@ -135,18 +148,35 @@ entry:
 }
 
 define i8 @select_offsets_not_simplifiable_1(i1 %cnd1, i1 %cnd2) {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
-; CHECK-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_1
-; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[SEL0:%.*]] = select i1 [[CND1]], i64 23, i64 29
-; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CND2]], i64 [[SEL0]], i64 7
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
-; CHECK-NEXT:    store i8 100, ptr [[GEP23]], align 4
-; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[SEL1]]
-; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[GEP_SEL]], align 4
-; CHECK-NEXT:    ret i8 [[I]]
+; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
+; TUNIT-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_1
+; TUNIT-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
+; TUNIT-NEXT:  entry:
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; TUNIT-NEXT:    [[SEL0:%.*]] = select i1 [[CND1]], i64 23, i64 29
+; TUNIT-NEXT:    [[SEL1:%.*]] = select i1 [[CND2]], i64 [[SEL0]], i64 7
+; TUNIT-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -23
+; TUNIT-NEXT:    store i8 100, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[SEL1]]
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP_SEL]], i64 -23
+; TUNIT-NEXT:    [[I3:%.*]] = load i8, ptr [[NEWGEP2]], align 4
+; TUNIT-NEXT:    ret i8 [[I3]]
+;
+; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
+; CGSCC-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_1
+; CGSCC-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
+; CGSCC-NEXT:  entry:
+; CGSCC-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; CGSCC-NEXT:    [[SEL0:%.*]] = select i1 [[CND1]], i64 23, i64 29
+; CGSCC-NEXT:    [[SEL1:%.*]] = select i1 [[CND2]], i64 [[SEL0]], i64 7
+; CGSCC-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; CGSCC-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -23
+; CGSCC-NEXT:    store i8 100, ptr [[NEWGEP3]], align 4
+; CGSCC-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[SEL1]]
+; CGSCC-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_SEL]], i64 -23
+; CGSCC-NEXT:    [[I2:%.*]] = load i8, ptr [[NEWGEP]], align 4
+; CGSCC-NEXT:    ret i8 [[I2]]
 ;
 entry:
   %Bytes = alloca [1024 x i8], align 16
@@ -164,15 +194,17 @@ define i8 @select_offsets_not_simplifiable_2(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_2
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
 ; CHECK-NEXT:    [[SEL0:%.*]] = select i1 [[CND1]], i64 23, i64 29
 ; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CND2]], i64 [[SEL0]], i64 7
-; CHECK-NEXT:    [[GEP32:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 32
-; CHECK-NEXT:    store i8 100, ptr [[GEP32]], align 16
-; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[SEL1]]
+; CHECK-NEXT:    [[GEP32:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 32
+; CHECK-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP32]], i64 -32
+; CHECK-NEXT:    store i8 100, ptr [[NEWGEP3]], align 16
+; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[SEL1]]
 ; CHECK-NEXT:    [[GEP_PLUS:%.*]] = getelementptr inbounds i8, ptr [[GEP_SEL]], i64 3
-; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[GEP_PLUS]], align 4
-; CHECK-NEXT:    ret i8 [[I]]
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_PLUS]], i64 -32
+; CHECK-NEXT:    [[I2:%.*]] = load i8, ptr [[NEWGEP]], align 4
+; CHECK-NEXT:    ret i8 [[I2]]
 ;
 entry:
   %Bytes = alloca [1024 x i8], align 16
@@ -237,19 +269,37 @@ entry:
 }
 
 define i8 @select_offsets_not_simplifiable_5(i1 %cnd1, i1 %cnd2) {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
-; CHECK-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_5
-; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BUNDLE:%.*]] = alloca [[STRUCT_T:%.*]], align 64
-; CHECK-NEXT:    [[GEP_FIXED:%.*]] = getelementptr inbounds [[STRUCT_T]], ptr [[BUNDLE]], i64 0, i32 1, i64 3, i64 5
-; CHECK-NEXT:    store i8 100, ptr [[GEP_FIXED]], align 4
-; CHECK-NEXT:    [[SEL1:%.*]] = select i1 [[CND1]], i64 1, i64 3
-; CHECK-NEXT:    [[SEL2:%.*]] = select i1 [[CND2]], i64 5, i64 11
-; CHECK-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [[STRUCT_T]], ptr [[BUNDLE]], i64 0, i32 1, i64 [[SEL1]], i64 [[SEL2]]
-; CHECK-NEXT:    store i8 42, ptr [[GEP_SEL]], align 4
-; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[GEP_FIXED]], align 4
-; CHECK-NEXT:    ret i8 [[I]]
+; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
+; TUNIT-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_5
+; TUNIT-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
+; TUNIT-NEXT:  entry:
+; TUNIT-NEXT:    [[BUNDLE1:%.*]] = alloca [4 x i8], align 1
+; TUNIT-NEXT:    [[GEP_FIXED:%.*]] = getelementptr inbounds [[STRUCT_T:%.*]], ptr [[BUNDLE1]], i64 0, i32 1, i64 3, i64 5
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_FIXED]], i64 -69
+; TUNIT-NEXT:    store i8 100, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    [[SEL1:%.*]] = select i1 [[CND1]], i64 1, i64 3
+; TUNIT-NEXT:    [[SEL2:%.*]] = select i1 [[CND2]], i64 5, i64 11
+; TUNIT-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [[STRUCT_T]], ptr [[BUNDLE1]], i64 0, i32 1, i64 [[SEL1]], i64 [[SEL2]]
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP_SEL]], i64 -69
+; TUNIT-NEXT:    store i8 42, ptr [[NEWGEP2]], align 4
+; TUNIT-NEXT:    [[I:%.*]] = load i8, ptr [[GEP_FIXED]], align 4
+; TUNIT-NEXT:    ret i8 [[I]]
+;
+; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
+; CGSCC-LABEL: define {{[^@]+}}@select_offsets_not_simplifiable_5
+; CGSCC-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
+; CGSCC-NEXT:  entry:
+; CGSCC-NEXT:    [[BUNDLE1:%.*]] = alloca [4 x i8], align 1
+; CGSCC-NEXT:    [[GEP_FIXED:%.*]] = getelementptr inbounds [[STRUCT_T:%.*]], ptr [[BUNDLE1]], i64 0, i32 1, i64 3, i64 5
+; CGSCC-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP_FIXED]], i64 -69
+; CGSCC-NEXT:    store i8 100, ptr [[NEWGEP2]], align 4
+; CGSCC-NEXT:    [[SEL1:%.*]] = select i1 [[CND1]], i64 1, i64 3
+; CGSCC-NEXT:    [[SEL2:%.*]] = select i1 [[CND2]], i64 5, i64 11
+; CGSCC-NEXT:    [[GEP_SEL:%.*]] = getelementptr inbounds [[STRUCT_T]], ptr [[BUNDLE1]], i64 0, i32 1, i64 [[SEL1]], i64 [[SEL2]]
+; CGSCC-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_SEL]], i64 -69
+; CGSCC-NEXT:    store i8 42, ptr [[NEWGEP]], align 4
+; CGSCC-NEXT:    [[I:%.*]] = load i8, ptr [[GEP_FIXED]], align 4
+; CGSCC-NEXT:    ret i8 [[I]]
 ;
 entry:
   %bundle = alloca %struct.T, align 64
@@ -267,16 +317,35 @@ entry:
 }
 
 define i8 @select_gep_simplifiable_1(i1 %cnd1, i1 %cnd2) {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
-; CHECK-LABEL: define {{[^@]+}}@select_gep_simplifiable_1
-; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR2:[0-9]+]] {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 7
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
-; CHECK-NEXT:    [[SEL_PTR:%.*]] = select i1 [[CND1]], ptr [[GEP7]], ptr [[GEP23]]
-; CHECK-NEXT:    store i8 42, ptr [[SEL_PTR]], align 4
-; CHECK-NEXT:    ret i8 21
+; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
+; TUNIT-LABEL: define {{[^@]+}}@select_gep_simplifiable_1
+; TUNIT-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR2:[0-9]+]] {
+; TUNIT-NEXT:  entry:
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; TUNIT-NEXT:    [[GEP3:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 3
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP3]], i64 -1
+; TUNIT-NEXT:    store i8 21, ptr [[NEWGEP2]], align 4
+; TUNIT-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 7
+; TUNIT-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; TUNIT-NEXT:    [[SEL_PTR:%.*]] = select i1 [[CND1]], ptr [[GEP7]], ptr [[GEP23]]
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[SEL_PTR]], i64 -23
+; TUNIT-NEXT:    store i8 42, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    ret i8 21
+;
+; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
+; CGSCC-LABEL: define {{[^@]+}}@select_gep_simplifiable_1
+; CGSCC-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR2:[0-9]+]] {
+; CGSCC-NEXT:  entry:
+; CGSCC-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; CGSCC-NEXT:    [[GEP3:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 3
+; CGSCC-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP3]], i64 -1
+; CGSCC-NEXT:    store i8 21, ptr [[NEWGEP]], align 4
+; CGSCC-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 7
+; CGSCC-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; CGSCC-NEXT:    [[SEL_PTR:%.*]] = select i1 [[CND1]], ptr [[GEP7]], ptr [[GEP23]]
+; CGSCC-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[SEL_PTR]], i64 -23
+; CGSCC-NEXT:    store i8 42, ptr [[NEWGEP2]], align 4
+; CGSCC-NEXT:    ret i8 21
 ;
 entry:
   %Bytes = alloca [1024 x i8], align 16
@@ -295,12 +364,14 @@ define i8 @select_gep_not_simplifiable_1(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@select_gep_not_simplifiable_1
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3:[0-9]+]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 7
-; CHECK-NEXT:    store i8 1, ptr [[GEP7]], align 4
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [2 x i8], align 1
+; CHECK-NEXT:    [[GEP7:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 7
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP7]], i64 -6
+; CHECK-NEXT:    store i8 1, ptr [[NEWGEP]], align 4
+; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
 ; CHECK-NEXT:    [[SEL_PTR:%.*]] = select i1 [[CND1]], ptr [[GEP7]], ptr [[GEP23]]
-; CHECK-NEXT:    store i8 42, ptr [[SEL_PTR]], align 4
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[SEL_PTR]], i64 -23
+; CHECK-NEXT:    store i8 42, ptr [[NEWGEP2]], align 4
 ; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[GEP7]], align 4
 ; CHECK-NEXT:    ret i8 [[I]]
 ;
@@ -318,25 +389,55 @@ entry:
 ; FIXME: The whole function is just "ret i8 21".
 
 define i8 @phi_gep_simplifiable_1(i1 %cnd1, i1 %cnd2) {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
-; CHECK-LABEL: define {{[^@]+}}@phi_gep_simplifiable_1
-; CHECK-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3]] {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
-; CHECK:       then:
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
-; CHECK-NEXT:    store i8 21, ptr [[GEP23]], align 4
-; CHECK-NEXT:    br label [[JOIN:%.*]]
-; CHECK:       else:
-; CHECK-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 31
-; CHECK-NEXT:    store i8 21, ptr [[GEP31]], align 4
-; CHECK-NEXT:    br label [[JOIN]]
-; CHECK:       join:
-; CHECK-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
-; CHECK-NEXT:    [[GEP29:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 29
-; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[PHI_PTR]], align 4
-; CHECK-NEXT:    ret i8 [[I]]
+; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
+; TUNIT-LABEL: define {{[^@]+}}@phi_gep_simplifiable_1
+; TUNIT-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3]] {
+; TUNIT-NEXT:  entry:
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; TUNIT-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
+; TUNIT:       then:
+; TUNIT-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -22
+; TUNIT-NEXT:    store i8 21, ptr [[NEWGEP2]], align 4
+; TUNIT-NEXT:    br label [[JOIN:%.*]]
+; TUNIT:       else:
+; TUNIT-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 31
+; TUNIT-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP31]], i64 -31
+; TUNIT-NEXT:    store i8 21, ptr [[NEWGEP3]], align 4
+; TUNIT-NEXT:    br label [[JOIN]]
+; TUNIT:       join:
+; TUNIT-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
+; TUNIT-NEXT:    [[GEP29:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 29
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP29]], i64 -27
+; TUNIT-NEXT:    store i8 42, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    [[NEWGEP4:%.*]] = getelementptr ptr, ptr [[PHI_PTR]], i64 -31
+; TUNIT-NEXT:    [[I5:%.*]] = load i8, ptr [[NEWGEP4]], align 4
+; TUNIT-NEXT:    ret i8 [[I5]]
+;
+; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
+; CGSCC-LABEL: define {{[^@]+}}@phi_gep_simplifiable_1
+; CGSCC-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3]] {
+; CGSCC-NEXT:  entry:
+; CGSCC-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; CGSCC-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
+; CGSCC:       then:
+; CGSCC-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; CGSCC-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -22
+; CGSCC-NEXT:    store i8 21, ptr [[NEWGEP]], align 4
+; CGSCC-NEXT:    br label [[JOIN:%.*]]
+; CGSCC:       else:
+; CGSCC-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 31
+; CGSCC-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP31]], i64 -31
+; CGSCC-NEXT:    store i8 21, ptr [[NEWGEP3]], align 4
+; CGSCC-NEXT:    br label [[JOIN]]
+; CGSCC:       join:
+; CGSCC-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
+; CGSCC-NEXT:    [[GEP29:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 29
+; CGSCC-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP29]], i64 -27
+; CGSCC-NEXT:    store i8 42, ptr [[NEWGEP2]], align 4
+; CGSCC-NEXT:    [[NEWGEP4:%.*]] = getelementptr ptr, ptr [[PHI_PTR]], i64 -31
+; CGSCC-NEXT:    [[I5:%.*]] = load i8, ptr [[NEWGEP4]], align 4
+; CGSCC-NEXT:    ret i8 [[I5]]
 ;
 entry:
   %Bytes = alloca [1024 x i8], align 16
@@ -366,19 +467,23 @@ join:
 define i8 @phi_gep_simplifiable_2(i1 %cnd1, i1 %cnd2) {
 ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
 ; CHECK-LABEL: define {{[^@]+}}@phi_gep_simplifiable_2
-; CHECK-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR2]] {
+; CHECK-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR2:[0-9]+]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
+; CHECK-NEXT:    [[GEP29:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 29
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP29]], i64 -27
+; CHECK-NEXT:    store i8 42, ptr [[NEWGEP2]], align 4
 ; CHECK-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
 ; CHECK:       then:
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
+; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
 ; CHECK-NEXT:    br label [[JOIN:%.*]]
 ; CHECK:       else:
-; CHECK-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 31
+; CHECK-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 31
 ; CHECK-NEXT:    br label [[JOIN]]
 ; CHECK:       join:
 ; CHECK-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
-; CHECK-NEXT:    store i8 21, ptr [[PHI_PTR]], align 4
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[PHI_PTR]], i64 -31
+; CHECK-NEXT:    store i8 21, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    ret i8 42
 ;
 entry:
@@ -405,23 +510,45 @@ join:
 }
 
 define i8 @phi_gep_not_simplifiable_1(i1 %cnd1, i1 %cnd2) {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
-; CHECK-LABEL: define {{[^@]+}}@phi_gep_not_simplifiable_1
-; CHECK-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3]] {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 23
-; CHECK-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
-; CHECK:       then:
-; CHECK-NEXT:    br label [[JOIN:%.*]]
-; CHECK:       else:
-; CHECK-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 31
-; CHECK-NEXT:    br label [[JOIN]]
-; CHECK:       join:
-; CHECK-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
-; CHECK-NEXT:    store i8 42, ptr [[GEP23]], align 4
-; CHECK-NEXT:    [[I:%.*]] = load i8, ptr [[PHI_PTR]], align 4
-; CHECK-NEXT:    ret i8 [[I]]
+; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
+; TUNIT-LABEL: define {{[^@]+}}@phi_gep_not_simplifiable_1
+; TUNIT-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3]] {
+; TUNIT-NEXT:  entry:
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [2 x i8], align 1
+; TUNIT-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; TUNIT-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
+; TUNIT:       then:
+; TUNIT-NEXT:    br label [[JOIN:%.*]]
+; TUNIT:       else:
+; TUNIT-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 31
+; TUNIT-NEXT:    br label [[JOIN]]
+; TUNIT:       join:
+; TUNIT-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -22
+; TUNIT-NEXT:    store i8 42, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[PHI_PTR]], i64 -31
+; TUNIT-NEXT:    [[I3:%.*]] = load i8, ptr [[NEWGEP2]], align 4
+; TUNIT-NEXT:    ret i8 [[I3]]
+;
+; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
+; CGSCC-LABEL: define {{[^@]+}}@phi_gep_not_simplifiable_1
+; CGSCC-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR3]] {
+; CGSCC-NEXT:  entry:
+; CGSCC-NEXT:    [[BYTES1:%.*]] = alloca [2 x i8], align 1
+; CGSCC-NEXT:    [[GEP23:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 23
+; CGSCC-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
+; CGSCC:       then:
+; CGSCC-NEXT:    br label [[JOIN:%.*]]
+; CGSCC:       else:
+; CGSCC-NEXT:    [[GEP31:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 31
+; CGSCC-NEXT:    br label [[JOIN]]
+; CGSCC:       join:
+; CGSCC-NEXT:    [[PHI_PTR:%.*]] = phi ptr [ [[GEP23]], [[THEN]] ], [ [[GEP31]], [[ELSE]] ]
+; CGSCC-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP23]], i64 -22
+; CGSCC-NEXT:    store i8 42, ptr [[NEWGEP3]], align 4
+; CGSCC-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[PHI_PTR]], i64 -31
+; CGSCC-NEXT:    [[I2:%.*]] = load i8, ptr [[NEWGEP]], align 4
+; CGSCC-NEXT:    ret i8 [[I2]]
 ;
 entry:
   %Bytes = alloca [1024 x i8], align 16
@@ -485,7 +612,7 @@ define i8 @phi_offsets(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@phi_offsets
 ; CHECK-SAME: (i1 noundef [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR1]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [3 x i8], align 1
 ; CHECK-NEXT:    br i1 [[CND1]], label [[THEN:%.*]], label [[ELSE:%.*]]
 ; CHECK:       then:
 ; CHECK-NEXT:    br label [[JOIN:%.*]]
@@ -493,7 +620,9 @@ define i8 @phi_offsets(i1 %cnd1, i1 %cnd2) {
 ; CHECK-NEXT:    br label [[JOIN]]
 ; CHECK:       join:
 ; CHECK-NEXT:    [[PHI:%.*]] = phi i64 [ 3, [[THEN]] ], [ 11, [[ELSE]] ]
-; CHECK-NEXT:    [[GEP_PHI:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[PHI]]
+; CHECK-NEXT:    [[GEP_PHI:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[PHI]]
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_PHI]], i64 -10
+; CHECK-NEXT:    store i8 42, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    ret i8 100
 ;
 entry:
@@ -521,6 +650,3 @@ join:
 ; CHECK: attributes #[[ATTR2]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write) }
 ; CHECK: attributes #[[ATTR3]] = { mustprogress nofree norecurse nosync nounwind willreturn }
 ;.
-;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
-; CGSCC: {{.*}}
-; TUNIT: {{.*}}
diff --git a/llvm/test/Transforms/Attributor/nocapture-2.ll b/llvm/test/Transforms/Attributor/nocapture-2.ll
index 1e5e9da19909f..b717fce516182 100644
--- a/llvm/test/Transforms/Attributor/nocapture-2.ll
+++ b/llvm/test/Transforms/Attributor/nocapture-2.ll
@@ -757,19 +757,19 @@ define ptr @b64613_b(ptr noundef %p, i32 %i) {
 ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
 ; TUNIT-LABEL: define ptr @b64613_b
 ; TUNIT-SAME: (ptr nofree noundef [[P:%.*]], i32 [[I:%.*]]) #[[ATTR11]] {
-; TUNIT-NEXT:    [[P_ADDR:%.*]] = alloca <2 x ptr>, align 1
-; TUNIT-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR]], i32 [[I]]
+; TUNIT-NEXT:    [[P_ADDR1:%.*]] = alloca [8 x i8], align 1
+; TUNIT-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR1]], i32 [[I]]
 ; TUNIT-NEXT:    store ptr [[P]], ptr [[G]], align 1
-; TUNIT-NEXT:    [[R:%.*]] = load ptr, ptr [[P_ADDR]], align 1
+; TUNIT-NEXT:    [[R:%.*]] = load ptr, ptr [[P_ADDR1]], align 1
 ; TUNIT-NEXT:    ret ptr [[R]]
 ;
 ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
 ; CGSCC-LABEL: define ptr @b64613_b
 ; CGSCC-SAME: (ptr nofree noundef [[P:%.*]], i32 [[I:%.*]]) #[[ATTR12]] {
-; CGSCC-NEXT:    [[P_ADDR:%.*]] = alloca <2 x ptr>, align 1
-; CGSCC-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR]], i32 [[I]]
+; CGSCC-NEXT:    [[P_ADDR1:%.*]] = alloca [8 x i8], align 1
+; CGSCC-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR1]], i32 [[I]]
 ; CGSCC-NEXT:    store ptr [[P]], ptr [[G]], align 1
-; CGSCC-NEXT:    [[R:%.*]] = load ptr, ptr [[P_ADDR]], align 1
+; CGSCC-NEXT:    [[R:%.*]] = load ptr, ptr [[P_ADDR1]], align 1
 ; CGSCC-NEXT:    ret ptr [[R]]
 ;
   %p.addr = alloca <2 x ptr>, align 1
@@ -782,16 +782,16 @@ define void @b64613_positive(ptr noundef %p, i32 %i) {
 ; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
 ; TUNIT-LABEL: define void @b64613_positive
 ; TUNIT-SAME: (ptr nocapture nofree noundef [[P:%.*]], i32 [[I:%.*]]) #[[ATTR11]] {
-; TUNIT-NEXT:    [[P_ADDR:%.*]] = alloca <2 x ptr>, align 1
-; TUNIT-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR]], i32 [[I]]
+; TUNIT-NEXT:    [[P_ADDR1:%.*]] = alloca [8 x i8], align 1
+; TUNIT-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR1]], i32 [[I]]
 ; TUNIT-NEXT:    store ptr [[P]], ptr [[G]], align 1
 ; TUNIT-NEXT:    ret void
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
 ; CGSCC-LABEL: define void @b64613_positive
 ; CGSCC-SAME: (ptr nocapture nofree noundef [[P:%.*]], i32 [[I:%.*]]) #[[ATTR13:[0-9]+]] {
-; CGSCC-NEXT:    [[P_ADDR:%.*]] = alloca <2 x ptr>, align 1
-; CGSCC-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR]], i32 [[I]]
+; CGSCC-NEXT:    [[P_ADDR1:%.*]] = alloca [8 x i8], align 1
+; CGSCC-NEXT:    [[G:%.*]] = getelementptr i8, ptr [[P_ADDR1]], i32 [[I]]
 ; CGSCC-NEXT:    store ptr [[P]], ptr [[G]], align 1
 ; CGSCC-NEXT:    ret void
 ;
diff --git a/llvm/test/Transforms/Attributor/nodelete.ll b/llvm/test/Transforms/Attributor/nodelete.ll
index c28cb28379348..6357bf742bbf1 100644
--- a/llvm/test/Transforms/Attributor/nodelete.ll
+++ b/llvm/test/Transforms/Attributor/nodelete.ll
@@ -10,15 +10,14 @@ define hidden i64 @f1() align 2 {
 ; TUNIT-LABEL: define {{[^@]+}}@f1
 ; TUNIT-SAME: () #[[ATTR0:[0-9]+]] align 2 {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[REF_TMP1:%.*]] = alloca i8, i32 0, align 8
+; TUNIT-NEXT:    [[REF_TMP1:%.*]] = alloca [0 x i8], align 1
 ; TUNIT-NEXT:    ret i64 undef
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
 ; CGSCC-LABEL: define {{[^@]+}}@f1
 ; CGSCC-SAME: () #[[ATTR0:[0-9]+]] align 2 {
 ; CGSCC-NEXT:  entry:
-; CGSCC-NEXT:    [[REF_TMP:%.*]] = alloca [[A:%.*]], align 8
-; CGSCC-NEXT:    [[REF_TMP1:%.*]] = alloca i8, i32 0, align 8
+; CGSCC-NEXT:    [[REF_TMP1:%.*]] = alloca [0 x i8], align 1
 ; CGSCC-NEXT:    [[CALL2:%.*]] = call i64 @f2() #[[ATTR2:[0-9]+]]
 ; CGSCC-NEXT:    ret i64 [[CALL2]]
 ;
diff --git a/llvm/test/Transforms/Attributor/pointer-info.ll b/llvm/test/Transforms/Attributor/pointer-info.ll
index 6afdbdaee317c..c8fec4f1de7b4 100644
--- a/llvm/test/Transforms/Attributor/pointer-info.ll
+++ b/llvm/test/Transforms/Attributor/pointer-info.ll
@@ -10,10 +10,12 @@ define void @foo(ptr %ptr) {
 ; TUNIT-LABEL: define {{[^@]+}}@foo
 ; TUNIT-SAME: (ptr nocapture nofree readnone [[PTR:%.*]]) #[[ATTR0:[0-9]+]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[TMP0:%.*]] = alloca [[STRUCT_TEST_A:%.*]], align 8
+; TUNIT-NEXT:    [[TMP0:%.*]] = alloca [8 x i8], align 1
 ; TUNIT-NEXT:    br label [[CALL_BR:%.*]]
 ; TUNIT:       call.br:
-; TUNIT-NEXT:    [[TMP1:%.*]] = getelementptr inbounds [[STRUCT_TEST_A]], ptr [[TMP0]], i64 0, i32 2
+; TUNIT-NEXT:    [[TMP1:%.*]] = getelementptr inbounds [[STRUCT_TEST_A:%.*]], ptr [[TMP0]], i64 0, i32 2
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[TMP1]], i64 -16
+; TUNIT-NEXT:    store ptr [[PTR]], ptr [[NEWGEP]], align 8
 ; TUNIT-NEXT:    tail call void @bar(ptr noalias nocapture nofree noundef nonnull readonly byval([[STRUCT_TEST_A]]) align 8 dereferenceable(24) [[TMP0]]) #[[ATTR2:[0-9]+]]
 ; TUNIT-NEXT:    ret void
 ;
diff --git a/llvm/test/Transforms/Attributor/value-simplify-pointer-info-vec.ll b/llvm/test/Transforms/Attributor/value-simplify-pointer-info-vec.ll
index 70793ec5c7f83..c07b8f9a3efe8 100644
--- a/llvm/test/Transforms/Attributor/value-simplify-pointer-info-vec.ll
+++ b/llvm/test/Transforms/Attributor/value-simplify-pointer-info-vec.ll
@@ -83,6 +83,12 @@ define i32 @vec_write_4() {
 ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
 ; CHECK-LABEL: define {{[^@]+}}@vec_write_4
 ; CHECK-SAME: () #[[ATTR0]] {
+; CHECK-NEXT:    [[A1:%.*]] = alloca [12 x i8], align 1
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[A1]], i64 4
+; CHECK-NEXT:    store i32 3, ptr [[NEWGEP]], align 16
+; CHECK-NEXT:    [[G:%.*]] = getelementptr i32, ptr [[A1]], i64 1
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[G]], i64 -4
+; CHECK-NEXT:    store <2 x i32> <i32 5, i32 5>, ptr [[NEWGEP2]], align 8
 ; CHECK-NEXT:    ret i32 13
 ;
   %a = alloca <4 x i32>
@@ -101,8 +107,12 @@ define i32 @vec_write_5(i32 %arg) {
 ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
 ; CHECK-LABEL: define {{[^@]+}}@vec_write_5
 ; CHECK-SAME: (i32 [[ARG:%.*]]) #[[ATTR0]] {
-; CHECK-NEXT:    [[A:%.*]] = alloca <4 x i32>, align 16
-; CHECK-NEXT:    store i32 [[ARG]], ptr [[A]], align 16
+; CHECK-NEXT:    [[A1:%.*]] = alloca [12 x i8], align 1
+; CHECK-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[A1]], i64 4
+; CHECK-NEXT:    store i32 [[ARG]], ptr [[NEWGEP2]], align 16
+; CHECK-NEXT:    [[G:%.*]] = getelementptr i32, ptr [[A1]], i64 1
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[G]], i64 -4
+; CHECK-NEXT:    store <2 x i32> <i32 5, i32 5>, ptr [[NEWGEP]], align 8
 ; CHECK-NEXT:    [[ADD1:%.*]] = add i32 [[ARG]], 5
 ; CHECK-NEXT:    [[ADD2:%.*]] = add i32 5, [[ADD1]]
 ; CHECK-NEXT:    ret i32 [[ADD2]]
diff --git a/llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll b/llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll
index 7a35b5c856097..b12dc0770242e 100644
--- a/llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll
+++ b/llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll
@@ -259,8 +259,8 @@ define void @local_alloca_simplifiable_2() {
 ; TUNIT-LABEL: define {{[^@]+}}@local_alloca_simplifiable_2
 ; TUNIT-SAME: () #[[ATTR3:[0-9]+]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 1024, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(1024) [[BYTES]]) #[[ATTR17]]
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [6 x i8], align 1
+; TUNIT-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 1024, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(1024) [[BYTES1]]) #[[ATTR17]]
 ; TUNIT-NEXT:    br label [[FOR_COND:%.*]]
 ; TUNIT:       for.cond:
 ; TUNIT-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[ENTRY:%.*]] ]
@@ -270,7 +270,7 @@ define void @local_alloca_simplifiable_2() {
 ; TUNIT-NEXT:    br label [[FOR_END:%.*]]
 ; TUNIT:       for.body:
 ; TUNIT-NEXT:    [[I15:%.*]] = mul nuw nsw i64 [[INDVARS_IV]], 10
-; TUNIT-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[I15]]
+; TUNIT-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[I15]]
 ; TUNIT-NEXT:    br label [[FOR_INC]]
 ; TUNIT:       for.inc:
 ; TUNIT-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
@@ -286,7 +286,7 @@ define void @local_alloca_simplifiable_2() {
 ; TUNIT:       for.body5:
 ; TUNIT-NEXT:    [[I17:%.*]] = mul nuw nsw i64 [[INDVARS_IV2]], 10
 ; TUNIT-NEXT:    [[I18:%.*]] = or i64 [[I17]], 1
-; TUNIT-NEXT:    [[ARRAYIDX8:%.*]] = getelementptr inbounds float, ptr [[BYTES]], i64 [[I18]]
+; TUNIT-NEXT:    [[ARRAYIDX8:%.*]] = getelementptr inbounds float, ptr [[BYTES1]], i64 [[I18]]
 ; TUNIT-NEXT:    br label [[FOR_INC9]]
 ; TUNIT:       for.inc9:
 ; TUNIT-NEXT:    [[INDVARS_IV_NEXT3]] = add nuw nsw i64 [[INDVARS_IV2]], 1
@@ -302,15 +302,18 @@ define void @local_alloca_simplifiable_2() {
 ; TUNIT:       for.body16:
 ; TUNIT-NEXT:    [[I20:%.*]] = mul nuw nsw i64 [[INDVARS_IV7]], 10
 ; TUNIT-NEXT:    [[I21:%.*]] = add nuw nsw i64 [[I20]], 2
-; TUNIT-NEXT:    [[ARRAYIDX21:%.*]] = getelementptr inbounds i64, ptr [[BYTES]], i64 [[I21]]
+; TUNIT-NEXT:    [[ARRAYIDX21:%.*]] = getelementptr inbounds i64, ptr [[BYTES1]], i64 [[I21]]
 ; TUNIT-NEXT:    br label [[FOR_INC22]]
 ; TUNIT:       for.inc22:
 ; TUNIT-NEXT:    [[INDVARS_IV_NEXT8]] = add nuw nsw i64 [[INDVARS_IV7]], 1
 ; TUNIT-NEXT:    br label [[FOR_COND13]], !llvm.loop [[LOOP18:![0-9]+]]
 ; TUNIT:       for.end24:
-; TUNIT-NEXT:    [[ARRAYIDX25:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 1023
-; TUNIT-NEXT:    [[ARRAYIDX26:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 500
-; TUNIT-NEXT:    call void @write_arg(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(524) [[ARRAYIDX26]], i32 noundef 0) #[[ATTR18]]
+; TUNIT-NEXT:    [[ARRAYIDX25:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 1023
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[ARRAYIDX25]], i64 -1023
+; TUNIT-NEXT:    store i8 0, ptr [[NEWGEP]], align 1
+; TUNIT-NEXT:    [[ARRAYIDX26:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 500
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[ARRAYIDX26]], i64 -498
+; TUNIT-NEXT:    call void @write_arg(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(524) [[NEWGEP2]], i32 noundef 0) #[[ATTR18]]
 ; TUNIT-NEXT:    br label [[FOR_COND28:%.*]]
 ; TUNIT:       for.cond28:
 ; TUNIT-NEXT:    [[INDVARS_IV12:%.*]] = phi i64 [ [[INDVARS_IV_NEXT13:%.*]], [[FOR_INC36:%.*]] ], [ 0, [[FOR_END24]] ]
@@ -326,7 +329,7 @@ define void @local_alloca_simplifiable_2() {
 ; TUNIT-NEXT:    [[INDVARS_IV_NEXT13]] = add nuw nsw i64 [[INDVARS_IV12]], 1
 ; TUNIT-NEXT:    br label [[FOR_COND28]], !llvm.loop [[LOOP20:![0-9]+]]
 ; TUNIT:       for.end38:
-; TUNIT-NEXT:    call void @llvm.lifetime.end.p0(i64 noundef 1024, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(1024) [[BYTES]]) #[[ATTR17]]
+; TUNIT-NEXT:    call void @llvm.lifetime.end.p0(i64 noundef 1024, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(1024) [[BYTES1]]) #[[ATTR17]]
 ; TUNIT-NEXT:    ret void
 ;
 ; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn
@@ -1589,38 +1592,38 @@ define i8 @local_alloca_not_simplifiable_2(i64 %index1, i64 %index2, i1 %cnd) {
 ; TUNIT-LABEL: define {{[^@]+}}@local_alloca_not_simplifiable_2
 ; TUNIT-SAME: (i64 [[INDEX1:%.*]], i64 [[INDEX2:%.*]], i1 noundef [[CND:%.*]]) #[[ATTR3]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; TUNIT-NEXT:    store i8 7, ptr [[BYTES]], align 16
+; TUNIT-NEXT:    [[BYTES1:%.*]] = alloca [1 x i8], align 1
+; TUNIT-NEXT:    store i8 7, ptr [[BYTES1]], align 16
 ; TUNIT-NEXT:    br i1 [[CND]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
 ; TUNIT:       left:
-; TUNIT-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[INDEX1]]
+; TUNIT-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[INDEX1]]
 ; TUNIT-NEXT:    br label [[JOIN:%.*]]
 ; TUNIT:       right:
-; TUNIT-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[INDEX2]]
+; TUNIT-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[INDEX2]]
 ; TUNIT-NEXT:    br label [[JOIN]]
 ; TUNIT:       join:
 ; TUNIT-NEXT:    [[GEP_JOIN:%.*]] = phi ptr [ [[GEP1]], [[LEFT]] ], [ [[GEP2]], [[RIGHT]] ]
 ; TUNIT-NEXT:    store i8 9, ptr [[GEP_JOIN]], align 4
-; TUNIT-NEXT:    [[I:%.*]] = load i8, ptr [[BYTES]], align 16
+; TUNIT-NEXT:    [[I:%.*]] = load i8, ptr [[BYTES1]], align 16
 ; TUNIT-NEXT:    ret i8 [[I]]
 ;
 ; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn
 ; CGSCC-LABEL: define {{[^@]+}}@local_alloca_not_simplifiable_2
 ; CGSCC-SAME: (i64 [[INDEX1:%.*]], i64 [[INDEX2:%.*]], i1 noundef [[CND:%.*]]) #[[ATTR5]] {
 ; CGSCC-NEXT:  entry:
-; CGSCC-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CGSCC-NEXT:    store i8 7, ptr [[BYTES]], align 16
+; CGSCC-NEXT:    [[BYTES1:%.*]] = alloca [1 x i8], align 1
+; CGSCC-NEXT:    store i8 7, ptr [[BYTES1]], align 16
 ; CGSCC-NEXT:    br i1 [[CND]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
 ; CGSCC:       left:
-; CGSCC-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[INDEX1]]
+; CGSCC-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[INDEX1]]
 ; CGSCC-NEXT:    br label [[JOIN:%.*]]
 ; CGSCC:       right:
-; CGSCC-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 [[INDEX2]]
+; CGSCC-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 [[INDEX2]]
 ; CGSCC-NEXT:    br label [[JOIN]]
 ; CGSCC:       join:
 ; CGSCC-NEXT:    [[GEP_JOIN:%.*]] = phi ptr [ [[GEP1]], [[LEFT]] ], [ [[GEP2]], [[RIGHT]] ]
 ; CGSCC-NEXT:    store i8 9, ptr [[GEP_JOIN]], align 4
-; CGSCC-NEXT:    [[I:%.*]] = load i8, ptr [[BYTES]], align 16
+; CGSCC-NEXT:    [[I:%.*]] = load i8, ptr [[BYTES1]], align 16
 ; CGSCC-NEXT:    ret i8 [[I]]
 ;
 entry:
@@ -1648,23 +1651,45 @@ join:                                             ; preds = %right, %left
 
 ; We could simplify these if we separate accessed bins wrt. alignment (here mod 4).
 define i32 @unknown_access_mixed_simplifiable(i32 %arg1, i32 %arg2) {
-; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
-; CHECK-LABEL: define {{[^@]+}}@unknown_access_mixed_simplifiable
-; CHECK-SAME: (i32 [[ARG1:%.*]], i32 [[ARG2:%.*]]) #[[ATTR4]] {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[S:%.*]] = alloca [[STRUCT_S:%.*]], align 4
-; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[S]], i64 0, i32 2
-; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds i32, ptr [[S]], i32 [[ARG1]]
-; CHECK-NEXT:    [[GEP3:%.*]] = getelementptr inbounds i32, ptr [[S]], i32 [[ARG2]]
-; CHECK-NEXT:    store i32 7, ptr [[GEP1]], align 4
-; CHECK-NEXT:    store i32 7, ptr [[GEP2]], align 4
-; CHECK-NEXT:    store i32 7, ptr [[GEP3]], align 4
-; CHECK-NEXT:    [[L1:%.*]] = load i32, ptr [[GEP1]], align 4
-; CHECK-NEXT:    [[L2:%.*]] = load i32, ptr [[GEP2]], align 4
-; CHECK-NEXT:    [[L3:%.*]] = load i32, ptr [[GEP3]], align 4
-; CHECK-NEXT:    [[ADD1:%.*]] = add i32 [[L1]], [[L2]]
-; CHECK-NEXT:    [[ADD2:%.*]] = add i32 [[ADD1]], [[L3]]
-; CHECK-NEXT:    ret i32 [[ADD2]]
+; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
+; TUNIT-LABEL: define {{[^@]+}}@unknown_access_mixed_simplifiable
+; TUNIT-SAME: (i32 [[ARG1:%.*]], i32 [[ARG2:%.*]]) #[[ATTR4]] {
+; TUNIT-NEXT:  entry:
+; TUNIT-NEXT:    [[S1:%.*]] = alloca [4 x i8], align 1
+; TUNIT-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], ptr [[S1]], i64 0, i32 2
+; TUNIT-NEXT:    [[GEP2:%.*]] = getelementptr inbounds i32, ptr [[S1]], i32 [[ARG1]]
+; TUNIT-NEXT:    [[GEP3:%.*]] = getelementptr inbounds i32, ptr [[S1]], i32 [[ARG2]]
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP1]], i64 -8
+; TUNIT-NEXT:    store i32 7, ptr [[NEWGEP]], align 4
+; TUNIT-NEXT:    store i32 7, ptr [[GEP2]], align 4
+; TUNIT-NEXT:    store i32 7, ptr [[GEP3]], align 4
+; TUNIT-NEXT:    [[NEWGEP2:%.*]] = getelementptr ptr, ptr [[GEP1]], i64 -8
+; TUNIT-NEXT:    [[L13:%.*]] = load i32, ptr [[NEWGEP2]], align 4
+; TUNIT-NEXT:    [[L2:%.*]] = load i32, ptr [[GEP2]], align 4
+; TUNIT-NEXT:    [[L3:%.*]] = load i32, ptr [[GEP3]], align 4
+; TUNIT-NEXT:    [[ADD1:%.*]] = add i32 [[L13]], [[L2]]
+; TUNIT-NEXT:    [[ADD2:%.*]] = add i32 [[ADD1]], [[L3]]
+; TUNIT-NEXT:    ret i32 [[ADD2]]
+;
+; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
+; CGSCC-LABEL: define {{[^@]+}}@unknown_access_mixed_simplifiable
+; CGSCC-SAME: (i32 [[ARG1:%.*]], i32 [[ARG2:%.*]]) #[[ATTR4]] {
+; CGSCC-NEXT:  entry:
+; CGSCC-NEXT:    [[S1:%.*]] = alloca [4 x i8], align 1
+; CGSCC-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], ptr [[S1]], i64 0, i32 2
+; CGSCC-NEXT:    [[GEP2:%.*]] = getelementptr inbounds i32, ptr [[S1]], i32 [[ARG1]]
+; CGSCC-NEXT:    [[GEP3:%.*]] = getelementptr inbounds i32, ptr [[S1]], i32 [[ARG2]]
+; CGSCC-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP1]], i64 -8
+; CGSCC-NEXT:    store i32 7, ptr [[NEWGEP3]], align 4
+; CGSCC-NEXT:    store i32 7, ptr [[GEP2]], align 4
+; CGSCC-NEXT:    store i32 7, ptr [[GEP3]], align 4
+; CGSCC-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP1]], i64 -8
+; CGSCC-NEXT:    [[L12:%.*]] = load i32, ptr [[NEWGEP]], align 4
+; CGSCC-NEXT:    [[L2:%.*]] = load i32, ptr [[GEP2]], align 4
+; CGSCC-NEXT:    [[L3:%.*]] = load i32, ptr [[GEP3]], align 4
+; CGSCC-NEXT:    [[ADD1:%.*]] = add i32 [[L12]], [[L2]]
+; CGSCC-NEXT:    [[ADD2:%.*]] = add i32 [[ADD1]], [[L3]]
+; CGSCC-NEXT:    ret i32 [[ADD2]]
 ;
 entry:
   %s = alloca %struct.S, align 4
@@ -1688,20 +1713,22 @@ define i32 @unknown_access_mixed_not_simplifiable(i32 %arg1, i32 %arg2, i32 %arg
 ; CHECK-LABEL: define {{[^@]+}}@unknown_access_mixed_not_simplifiable
 ; CHECK-SAME: (i32 [[ARG1:%.*]], i32 [[ARG2:%.*]], i32 [[ARG3:%.*]]) #[[ATTR4]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[S:%.*]] = alloca [[STRUCT_S:%.*]], align 4
-; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[S]], i64 0, i32 2
-; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds i32, ptr [[S]], i32 [[ARG1]]
-; CHECK-NEXT:    [[GEP3:%.*]] = getelementptr inbounds i32, ptr [[S]], i32 [[ARG2]]
-; CHECK-NEXT:    [[GEP4:%.*]] = getelementptr inbounds i8, ptr [[S]], i32 [[ARG3]]
-; CHECK-NEXT:    store i32 7, ptr [[GEP1]], align 4
+; CHECK-NEXT:    [[S1:%.*]] = alloca [4 x i8], align 1
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], ptr [[S1]], i64 0, i32 2
+; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds i32, ptr [[S1]], i32 [[ARG1]]
+; CHECK-NEXT:    [[GEP3:%.*]] = getelementptr inbounds i32, ptr [[S1]], i32 [[ARG2]]
+; CHECK-NEXT:    [[GEP4:%.*]] = getelementptr inbounds i8, ptr [[S1]], i32 [[ARG3]]
+; CHECK-NEXT:    [[NEWGEP3:%.*]] = getelementptr ptr, ptr [[GEP1]], i64 -8
+; CHECK-NEXT:    store i32 7, ptr [[NEWGEP3]], align 4
 ; CHECK-NEXT:    store i32 7, ptr [[GEP2]], align 4
 ; CHECK-NEXT:    store i32 7, ptr [[GEP3]], align 4
 ; CHECK-NEXT:    store i32 7, ptr [[GEP4]], align 4
-; CHECK-NEXT:    [[L1:%.*]] = load i32, ptr [[GEP1]], align 4
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP1]], i64 -8
+; CHECK-NEXT:    [[L12:%.*]] = load i32, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    [[L2:%.*]] = load i32, ptr [[GEP2]], align 4
 ; CHECK-NEXT:    [[L3:%.*]] = load i32, ptr [[GEP3]], align 4
 ; CHECK-NEXT:    [[L4:%.*]] = load i32, ptr [[GEP4]], align 4
-; CHECK-NEXT:    [[ADD1:%.*]] = add i32 [[L1]], [[L2]]
+; CHECK-NEXT:    [[ADD1:%.*]] = add i32 [[L12]], [[L2]]
 ; CHECK-NEXT:    [[ADD2:%.*]] = add i32 [[ADD1]], [[L3]]
 ; CHECK-NEXT:    [[ADD3:%.*]] = add i32 [[ADD2]], [[L4]]
 ; CHECK-NEXT:    ret i32 [[ADD3]]
@@ -2666,18 +2693,19 @@ define dso_local void @test_nested_memory(ptr %dst, ptr %src) {
 ; TUNIT-SAME: (ptr nocapture nofree writeonly [[DST:%.*]], ptr nocapture nofree readonly [[SRC:%.*]]) {
 ; TUNIT-NEXT:  entry:
 ; TUNIT-NEXT:    [[CALL_H2S:%.*]] = alloca i8, i64 24, align 1
-; TUNIT-NEXT:    [[LOCAL:%.*]] = alloca [[STRUCT_STY:%.*]], align 8
-; TUNIT-NEXT:    [[INNER:%.*]] = getelementptr inbounds [[STRUCT_STY]], ptr [[LOCAL]], i64 0, i32 2
-; TUNIT-NEXT:    store ptr @global, ptr [[INNER]], align 8
+; TUNIT-NEXT:    [[LOCAL1:%.*]] = alloca [8 x i8], align 1
+; TUNIT-NEXT:    [[INNER:%.*]] = getelementptr inbounds [[STRUCT_STY:%.*]], ptr [[LOCAL1]], i64 0, i32 2
+; TUNIT-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[INNER]], i64 -16
+; TUNIT-NEXT:    store ptr @global, ptr [[NEWGEP]], align 8
 ; TUNIT-NEXT:    store ptr [[DST]], ptr [[CALL_H2S]], align 8
 ; TUNIT-NEXT:    [[SRC2:%.*]] = getelementptr inbounds i8, ptr [[CALL_H2S]], i64 8
 ; TUNIT-NEXT:    store ptr [[SRC]], ptr [[SRC2]], align 8
 ; TUNIT-NEXT:    store ptr [[CALL_H2S]], ptr getelementptr inbounds ([[STRUCT_STY]], ptr @global, i64 0, i32 2), align 8
-; TUNIT-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[LOCAL]], align 8
-; TUNIT-NEXT:    [[LOCAL_B8:%.*]] = getelementptr i8, ptr [[LOCAL]], i64 8
-; TUNIT-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[LOCAL_B8]], align 8
-; TUNIT-NEXT:    [[LOCAL_B16:%.*]] = getelementptr i8, ptr [[LOCAL]], i64 16
-; TUNIT-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[LOCAL_B16]], align 8
+; TUNIT-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[LOCAL1]], align 8
+; TUNIT-NEXT:    [[LOCAL1_B8:%.*]] = getelementptr i8, ptr [[LOCAL1]], i64 8
+; TUNIT-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[LOCAL1_B8]], align 8
+; TUNIT-NEXT:    [[LOCAL1_B16:%.*]] = getelementptr i8, ptr [[LOCAL1]], i64 16
+; TUNIT-NEXT:    [[TMP2:%.*]] = load ptr, ptr [[LOCAL1_B16]], align 8
 ; TUNIT-NEXT:    call fastcc void @nested_memory_callee(ptr [[TMP0]], ptr [[TMP1]], ptr [[TMP2]]) #[[ATTR21:[0-9]+]]
 ; TUNIT-NEXT:    ret void
 ;
@@ -2773,8 +2801,8 @@ define hidden void @no_propagation_of_unknown_index_access(ptr %in, ptr %out, i3
 ; TUNIT-LABEL: define {{[^@]+}}@no_propagation_of_unknown_index_access
 ; TUNIT-SAME: (ptr nocapture nofree readonly [[IN:%.*]], ptr nocapture nofree writeonly [[OUT:%.*]], i32 [[IDX:%.*]]) #[[ATTR1]] {
 ; TUNIT-NEXT:  entry:
-; TUNIT-NEXT:    [[BUF:%.*]] = alloca [128 x i32], align 16
-; TUNIT-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF]]) #[[ATTR17]]
+; TUNIT-NEXT:    [[BUF1:%.*]] = alloca [4 x i8], align 1
+; TUNIT-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF1]]) #[[ATTR17]]
 ; TUNIT-NEXT:    br label [[FOR_COND:%.*]]
 ; TUNIT:       for.cond:
 ; TUNIT-NEXT:    [[I_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
@@ -2786,7 +2814,7 @@ define hidden void @no_propagation_of_unknown_index_access(ptr %in, ptr %out, i3
 ; TUNIT-NEXT:    [[IDXPROM:%.*]] = sext i32 [[I_0]] to i64
 ; TUNIT-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[IN]], i64 [[IDXPROM]]
 ; TUNIT-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
-; TUNIT-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF]], i64 0, i64 [[IDXPROM]]
+; TUNIT-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF1]], i64 0, i64 [[IDXPROM]]
 ; TUNIT-NEXT:    store i32 [[TMP0]], ptr [[ARRAYIDX2]], align 4
 ; TUNIT-NEXT:    [[INC]] = add nsw i32 [[I_0]], 1
 ; TUNIT-NEXT:    br label [[FOR_COND]], !llvm.loop [[TBAA10]]
@@ -2795,14 +2823,14 @@ define hidden void @no_propagation_of_unknown_index_access(ptr %in, ptr %out, i3
 ; TUNIT-NEXT:    [[CMP5:%.*]] = icmp slt i32 [[I3_0]], 128
 ; TUNIT-NEXT:    br i1 [[CMP5]], label [[FOR_BODY7]], label [[FOR_COND_CLEANUP6:%.*]]
 ; TUNIT:       for.cond.cleanup6:
-; TUNIT-NEXT:    call void @llvm.lifetime.end.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF]]) #[[ATTR17]]
+; TUNIT-NEXT:    call void @llvm.lifetime.end.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF1]]) #[[ATTR17]]
 ; TUNIT-NEXT:    ret void
 ; TUNIT:       for.body7:
 ; TUNIT-NEXT:    [[IDXPROM8:%.*]] = sext i32 [[I3_0]] to i64
-; TUNIT-NEXT:    [[ARRAYIDX9:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF]], i64 0, i64 [[IDXPROM8]]
+; TUNIT-NEXT:    [[ARRAYIDX9:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF1]], i64 0, i64 [[IDXPROM8]]
 ; TUNIT-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX9]], align 4
 ; TUNIT-NEXT:    [[IDXPROM10:%.*]] = sext i32 [[IDX]] to i64
-; TUNIT-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF]], i64 0, i64 [[IDXPROM10]]
+; TUNIT-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF1]], i64 0, i64 [[IDXPROM10]]
 ; TUNIT-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX11]], align 4
 ; TUNIT-NEXT:    [[CMP12:%.*]] = icmp sle i32 [[TMP1]], [[TMP2]]
 ; TUNIT-NEXT:    [[CONV:%.*]] = zext i1 [[CMP12]] to i32
@@ -2815,8 +2843,8 @@ define hidden void @no_propagation_of_unknown_index_access(ptr %in, ptr %out, i3
 ; CGSCC-LABEL: define {{[^@]+}}@no_propagation_of_unknown_index_access
 ; CGSCC-SAME: (ptr nocapture nofree readonly [[IN:%.*]], ptr nocapture nofree writeonly [[OUT:%.*]], i32 [[IDX:%.*]]) #[[ATTR13:[0-9]+]] {
 ; CGSCC-NEXT:  entry:
-; CGSCC-NEXT:    [[BUF:%.*]] = alloca [128 x i32], align 16
-; CGSCC-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF]]) #[[ATTR20]]
+; CGSCC-NEXT:    [[BUF1:%.*]] = alloca [4 x i8], align 1
+; CGSCC-NEXT:    call void @llvm.lifetime.start.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF1]]) #[[ATTR20]]
 ; CGSCC-NEXT:    br label [[FOR_COND:%.*]]
 ; CGSCC:       for.cond:
 ; CGSCC-NEXT:    [[I_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
@@ -2828,7 +2856,7 @@ define hidden void @no_propagation_of_unknown_index_access(ptr %in, ptr %out, i3
 ; CGSCC-NEXT:    [[IDXPROM:%.*]] = sext i32 [[I_0]] to i64
 ; CGSCC-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[IN]], i64 [[IDXPROM]]
 ; CGSCC-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
-; CGSCC-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF]], i64 0, i64 [[IDXPROM]]
+; CGSCC-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF1]], i64 0, i64 [[IDXPROM]]
 ; CGSCC-NEXT:    store i32 [[TMP0]], ptr [[ARRAYIDX2]], align 4
 ; CGSCC-NEXT:    [[INC]] = add nsw i32 [[I_0]], 1
 ; CGSCC-NEXT:    br label [[FOR_COND]], !llvm.loop [[TBAA10]]
@@ -2837,14 +2865,14 @@ define hidden void @no_propagation_of_unknown_index_access(ptr %in, ptr %out, i3
 ; CGSCC-NEXT:    [[CMP5:%.*]] = icmp slt i32 [[I3_0]], 128
 ; CGSCC-NEXT:    br i1 [[CMP5]], label [[FOR_BODY7]], label [[FOR_COND_CLEANUP6:%.*]]
 ; CGSCC:       for.cond.cleanup6:
-; CGSCC-NEXT:    call void @llvm.lifetime.end.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF]]) #[[ATTR20]]
+; CGSCC-NEXT:    call void @llvm.lifetime.end.p0(i64 noundef 512, ptr noalias nocapture nofree noundef nonnull align 16 dereferenceable(512) [[BUF1]]) #[[ATTR20]]
 ; CGSCC-NEXT:    ret void
 ; CGSCC:       for.body7:
 ; CGSCC-NEXT:    [[IDXPROM8:%.*]] = sext i32 [[I3_0]] to i64
-; CGSCC-NEXT:    [[ARRAYIDX9:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF]], i64 0, i64 [[IDXPROM8]]
+; CGSCC-NEXT:    [[ARRAYIDX9:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF1]], i64 0, i64 [[IDXPROM8]]
 ; CGSCC-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX9]], align 4
 ; CGSCC-NEXT:    [[IDXPROM10:%.*]] = sext i32 [[IDX]] to i64
-; CGSCC-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF]], i64 0, i64 [[IDXPROM10]]
+; CGSCC-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr inbounds [128 x i32], ptr [[BUF1]], i64 0, i64 [[IDXPROM10]]
 ; CGSCC-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX11]], align 4
 ; CGSCC-NEXT:    [[CMP12:%.*]] = icmp sle i32 [[TMP1]], [[TMP2]]
 ; CGSCC-NEXT:    [[CONV:%.*]] = zext i1 [[CMP12]] to i32
@@ -3017,8 +3045,10 @@ define i8 @gep_index_from_binary_operator(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@gep_index_from_binary_operator
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR4]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[GEP_FIXED:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 12
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [1 x i8], align 1
+; CHECK-NEXT:    [[GEP_FIXED:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 12
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_FIXED]], i64 -12
+; CHECK-NEXT:    store i8 100, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    ret i8 100
 ;
 entry:
@@ -3036,8 +3066,10 @@ define i8 @gep_index_from_memory(i1 %cnd1, i1 %cnd2) {
 ; CHECK-LABEL: define {{[^@]+}}@gep_index_from_memory
 ; CHECK-SAME: (i1 [[CND1:%.*]], i1 [[CND2:%.*]]) #[[ATTR4]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[BYTES:%.*]] = alloca [1024 x i8], align 16
-; CHECK-NEXT:    [[GEP_LOADED:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES]], i64 0, i64 12
+; CHECK-NEXT:    [[BYTES1:%.*]] = alloca [1 x i8], align 1
+; CHECK-NEXT:    [[GEP_LOADED:%.*]] = getelementptr inbounds [1024 x i8], ptr [[BYTES1]], i64 0, i64 12
+; CHECK-NEXT:    [[NEWGEP:%.*]] = getelementptr ptr, ptr [[GEP_LOADED]], i64 -12
+; CHECK-NEXT:    store i8 100, ptr [[NEWGEP]], align 4
 ; CHECK-NEXT:    ret i8 100
 ;
 entry:



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