[SCEVExpander] Preserve gep nuw during expansion (llvm#102133)

nikic · Sterling-Augustine · commit 815681f5c28d · 2024-10-02T18:14:26.000-07:00
When expanding SCEV adds to geps, transfer the nuw flag to the resulting
gep. (Note that this doesn't apply to IV increment GEPs, which go
through a different code path.)
diff --git a/llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h b/llvm/include/llvm/Transforms/Utils/ScalarEvolutionExpander.h
@@ -451,7 +451,7 @@ class SCEVExpander : public SCEVVisitor<SCEVExpander, Value *> {
 
   /// Expand a SCEVAddExpr with a pointer type into a GEP instead of using
   /// ptrtoint+arithmetic+inttoptr.
-  Value *expandAddToGEP(const SCEV *Op, Value *V);
+  Value *expandAddToGEP(const SCEV *Op, Value *V, SCEV::NoWrapFlags Flags);
 
   /// Find a previous Value in ExprValueMap for expand.
   /// DropPoisonGeneratingInsts is populated with instructions for which
diff --git a/llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp b/llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp
@@ -352,16 +352,19 @@ Value *SCEVExpander::InsertBinop(Instruction::BinaryOps Opcode,
 /// loop-invariant portions of expressions, after considering what
 /// can be folded using target addressing modes.
 ///
-Value *SCEVExpander::expandAddToGEP(const SCEV *Offset, Value *V) {
+Value *SCEVExpander::expandAddToGEP(const SCEV *Offset, Value *V,
+                                    SCEV::NoWrapFlags Flags) {
   assert(!isa<Instruction>(V) ||
          SE.DT.dominates(cast<Instruction>(V), &*Builder.GetInsertPoint()));
 
   Value *Idx = expand(Offset);
+  GEPNoWrapFlags NW = (Flags & SCEV::FlagNUW) ? GEPNoWrapFlags::noUnsignedWrap()
+                                              : GEPNoWrapFlags::none();
 
   // Fold a GEP with constant operands.
   if (Constant *CLHS = dyn_cast<Constant>(V))
     if (Constant *CRHS = dyn_cast<Constant>(Idx))
-      return Builder.CreatePtrAdd(CLHS, CRHS);
+      return Builder.CreatePtrAdd(CLHS, CRHS, "", NW);
 
   // Do a quick scan to see if we have this GEP nearby.  If so, reuse it.
   unsigned ScanLimit = 6;
@@ -380,7 +383,7 @@ Value *SCEVExpander::expandAddToGEP(const SCEV *Offset, Value *V) {
             GEP->getSourceElementType() == Builder.getInt8Ty() &&
             GEP->getOperand(1) == Idx) {
           rememberFlags(GEP);
-          GEP->setNoWrapFlags(GEPNoWrapFlags::none());
+          GEP->setNoWrapFlags(GEP->getNoWrapFlags() & NW);
           return &*IP;
         }
       }
@@ -402,7 +405,7 @@ Value *SCEVExpander::expandAddToGEP(const SCEV *Offset, Value *V) {
   }
 
   // Emit a GEP.
-  return Builder.CreatePtrAdd(V, Idx, "scevgep");
+  return Builder.CreatePtrAdd(V, Idx, "scevgep", NW);
 }
 
 /// PickMostRelevantLoop - Given two loops pick the one that's most relevant for
@@ -549,7 +552,7 @@ Value *SCEVExpander::visitAddExpr(const SCEVAddExpr *S) {
             X = SE.getSCEV(U->getValue());
         NewOps.push_back(X);
       }
-      Sum = expandAddToGEP(SE.getAddExpr(NewOps), Sum);
+      Sum = expandAddToGEP(SE.getAddExpr(NewOps), Sum, S->getNoWrapFlags());
     } else if (Op->isNonConstantNegative()) {
       // Instead of doing a negate and add, just do a subtract.
       Value *W = expand(SE.getNegativeSCEV(Op));
@@ -1251,7 +1254,8 @@ Value *SCEVExpander::visitAddRecExpr(const SCEVAddRecExpr *S) {
   if (!S->getStart()->isZero()) {
     if (isa<PointerType>(S->getType())) {
       Value *StartV = expand(SE.getPointerBase(S));
-      return expandAddToGEP(SE.removePointerBase(S), StartV);
+      return expandAddToGEP(SE.removePointerBase(S), StartV,
+                            S->getNoWrapFlags(SCEV::FlagNUW));
     }
 
     SmallVector<const SCEV *, 4> NewOps(S->operands());
diff --git a/llvm/test/Analysis/ScalarEvolution/scev-expander-reuse-gep.ll b/llvm/test/Analysis/ScalarEvolution/scev-expander-reuse-gep.ll
@@ -3,7 +3,7 @@
 ; RUN: opt -mtriple=i386-apple-macosx10.12.0 < %s -loop-reduce -S | FileCheck %s
 
 ; CHECK: %ptr4.ptr1 = select i1 %cmp.i, ptr %ptr4, ptr %ptr1
-; CHECK-NEXT: %scevgep = getelementptr i8, ptr %ptr4.ptr1, i32 1
+; CHECK-NEXT: %scevgep = getelementptr nuw i8, ptr %ptr4.ptr1, i32 1
 ; CHECK-NEXT: br label %while.cond.i
 
 target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
diff --git a/llvm/test/Transforms/IndVarSimplify/D108043.ll b/llvm/test/Transforms/IndVarSimplify/D108043.ll
@@ -9,7 +9,7 @@ define internal fastcc void @func_2() unnamed_addr {
 ; CHECK-NEXT:  lbl_2898.preheader:
 ; CHECK-NEXT:    br label [[LBL_2898:%.*]]
 ; CHECK:       lbl_2898.loopexit:
-; CHECK-NEXT:    store ptr getelementptr inbounds (i8, ptr @g_2168, i64 76), ptr @g_1150, align 8
+; CHECK-NEXT:    store ptr getelementptr inbounds nuw (i8, ptr @g_2168, i64 76), ptr @g_1150, align 8
 ; CHECK-NEXT:    br label [[LBL_2898]]
 ; CHECK:       lbl_2898:
 ; CHECK-NEXT:    br label [[FOR_COND884:%.*]]
diff --git a/llvm/test/Transforms/IndVarSimplify/lftr-dead-ivs.ll b/llvm/test/Transforms/IndVarSimplify/lftr-dead-ivs.ll
@@ -112,7 +112,7 @@ define void @dom_store_preinc() #0 {
 ; CHECK-NEXT:    [[P_0:%.*]] = phi ptr [ @data, [[ENTRY:%.*]] ], [ [[TMP3:%.*]], [[LOOP]] ]
 ; CHECK-NEXT:    store volatile i8 0, ptr [[P_0]], align 1
 ; CHECK-NEXT:    [[TMP3]] = getelementptr inbounds i8, ptr [[P_0]], i64 1
-; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[P_0]], getelementptr (i8, ptr @data, i64 245)
+; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[P_0]], getelementptr nuw (i8, ptr @data, i64 245)
 ; CHECK-NEXT:    br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT:%.*]]
 ; CHECK:       exit:
 ; CHECK-NEXT:    ret void
@@ -141,7 +141,7 @@ define void @dom_store_postinc() #0 {
 ; CHECK-NEXT:    [[P_0:%.*]] = phi ptr [ @data, [[ENTRY:%.*]] ], [ [[TMP3:%.*]], [[LOOP]] ]
 ; CHECK-NEXT:    [[TMP3]] = getelementptr inbounds i8, ptr [[P_0]], i64 1
 ; CHECK-NEXT:    store volatile i8 0, ptr [[TMP3]], align 1
-; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[TMP3]], getelementptr (i8, ptr @data, i64 246)
+; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[TMP3]], getelementptr nuw (i8, ptr @data, i64 246)
 ; CHECK-NEXT:    br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT:%.*]]
 ; CHECK:       exit:
 ; CHECK-NEXT:    ret void
@@ -170,7 +170,7 @@ define i8 @dom_load() #0 {
 ; CHECK-NEXT:    [[P_0:%.*]] = phi ptr [ @data, [[ENTRY:%.*]] ], [ [[TMP3:%.*]], [[LOOP]] ]
 ; CHECK-NEXT:    [[TMP3]] = getelementptr inbounds i8, ptr [[P_0]], i64 1
 ; CHECK-NEXT:    [[V:%.*]] = load i8, ptr [[TMP3]], align 1
-; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[TMP3]], getelementptr (i8, ptr @data, i64 246)
+; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[TMP3]], getelementptr nuw (i8, ptr @data, i64 246)
 ; CHECK-NEXT:    br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT:%.*]]
 ; CHECK:       exit:
 ; CHECK-NEXT:    [[V_LCSSA:%.*]] = phi i8 [ [[V]], [[LOOP]] ]
diff --git a/llvm/test/Transforms/IndVarSimplify/lftr.ll b/llvm/test/Transforms/IndVarSimplify/lftr.ll
@@ -196,7 +196,7 @@ define void @test_zext(ptr %a) #0 {
 ; CHECK-NEXT:    [[T2:%.*]] = load i8, ptr [[DOT0]], align 1
 ; CHECK-NEXT:    [[T3]] = getelementptr inbounds i8, ptr [[P_0]], i64 1
 ; CHECK-NEXT:    store i8 [[T2]], ptr [[P_0]], align 1
-; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[P_0]], getelementptr inbounds (i8, ptr @data, i64 239)
+; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne ptr [[P_0]], getelementptr inbounds nuw (i8, ptr @data, i64 239)
 ; CHECK-NEXT:    br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT:%.*]]
 ; CHECK:       exit:
 ; CHECK-NEXT:    ret void
diff --git a/llvm/test/Transforms/LoopIdiom/basic-address-space.ll b/llvm/test/Transforms/LoopIdiom/basic-address-space.ll
@@ -13,7 +13,7 @@ define void @test10(ptr addrspace(2) %X) nounwind ssp {
 ; CHECK:       bb.nph:
 ; CHECK-NEXT:    [[I_04:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INC12:%.*]], [[FOR_INC10:%.*]] ]
 ; CHECK-NEXT:    [[TMP0:%.*]] = mul nuw nsw i16 [[I_04]], 100
-; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr addrspace(2) [[X]], i16 [[TMP0]]
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr addrspace(2) [[X]], i16 [[TMP0]]
 ; CHECK-NEXT:    br label [[FOR_BODY5:%.*]]
 ; CHECK:       for.body5:
 ; CHECK-NEXT:    [[J_02:%.*]] = phi i16 [ 0, [[BB_NPH]] ], [ [[INC:%.*]], [[FOR_BODY5]] ]
diff --git a/llvm/test/Transforms/LoopIdiom/basic.ll b/llvm/test/Transforms/LoopIdiom/basic.ll
@@ -481,7 +481,7 @@ define void @test10(ptr %X) nounwind ssp {
 ; CHECK-NEXT:    [[INDVAR:%.*]] = phi i64 [ [[INDVAR_NEXT:%.*]], [[FOR_INC10:%.*]] ], [ 0, [[ENTRY:%.*]] ]
 ; CHECK-NEXT:    [[I_04:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[INC12:%.*]], [[FOR_INC10]] ]
 ; CHECK-NEXT:    [[TMP0:%.*]] = mul nuw nsw i64 [[INDVAR]], 100
-; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[X]], i64 [[TMP0]]
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[X]], i64 [[TMP0]]
 ; CHECK-NEXT:    br label [[FOR_BODY5:%.*]]
 ; CHECK:       for.body5:
 ; CHECK-NEXT:    [[J_02:%.*]] = phi i32 [ 0, [[BB_NPH]] ], [ [[INC:%.*]], [[FOR_BODY5]] ]
@@ -682,7 +682,7 @@ define void @PR14241(ptr %s, i64 %size) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[END_IDX:%.*]] = add i64 [[SIZE:%.*]], -1
 ; CHECK-NEXT:    [[END_PTR:%.*]] = getelementptr inbounds i32, ptr [[S:%.*]], i64 [[END_IDX]]
-; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[S]], i64 4
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[S]], i64 4
 ; CHECK-NEXT:    [[TMP0:%.*]] = shl i64 [[SIZE]], 2
 ; CHECK-NEXT:    [[TMP1:%.*]] = add i64 [[TMP0]], -8
 ; CHECK-NEXT:    [[TMP2:%.*]] = lshr i64 [[TMP1]], 2
diff --git a/llvm/test/Transforms/LoopIdiom/memset-pr52104.ll b/llvm/test/Transforms/LoopIdiom/memset-pr52104.ll
@@ -6,12 +6,12 @@ define void @f(ptr nocapture nonnull align 4 dereferenceable(20) %0, i32 %1) loc
 ; CHECK-NEXT:    [[TMP3:%.*]] = trunc i32 [[TMP1:%.*]] to i2
 ; CHECK-NEXT:    [[TMP4:%.*]] = zext i2 [[TMP3]] to i64
 ; CHECK-NEXT:    [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 2
-; CHECK-NEXT:    [[UGLYGEP:%.*]] = getelementptr i8, ptr [[TMP0:%.*]], i64 [[TMP5]]
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[TMP0:%.*]], i64 [[TMP5]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = sub i2 -1, [[TMP3]]
 ; CHECK-NEXT:    [[TMP7:%.*]] = zext i2 [[TMP6]] to i64
 ; CHECK-NEXT:    [[TMP8:%.*]] = shl nuw nsw i64 [[TMP7]], 2
 ; CHECK-NEXT:    [[TMP9:%.*]] = add nuw nsw i64 [[TMP8]], 4
-; CHECK-NEXT:    call void @llvm.memset.p0.i64(ptr align 4 [[UGLYGEP]], i8 0, i64 [[TMP9]], i1 false)
+; CHECK-NEXT:    call void @llvm.memset.p0.i64(ptr align 4 [[SCEVGEP]], i8 0, i64 [[TMP9]], i1 false)
 ; CHECK-NEXT:    br label [[TMP10:%.*]]
 ; CHECK:       10:
 ; CHECK-NEXT:    [[TMP11:%.*]] = phi i32 [ [[TMP15:%.*]], [[TMP10]] ], [ [[TMP1]], [[TMP2:%.*]] ]
diff --git a/llvm/test/Transforms/LoopStrengthReduce/2011-12-19-PostincQuadratic.ll b/llvm/test/Transforms/LoopStrengthReduce/2011-12-19-PostincQuadratic.ll
@@ -16,7 +16,7 @@ define void @vb() nounwind {
 ; CHECK-NEXT:  for.cond.preheader:
 ; CHECK-NEXT:    br label [[FOR_BODY7:%.*]]
 ; CHECK:       for.body7:
-; CHECK-NEXT:    [[LSR_IV1:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[FOR_BODY7]] ], [ getelementptr inbounds (i8, ptr @b, i32 4), [[FOR_COND_PREHEADER:%.*]] ]
+; CHECK-NEXT:    [[LSR_IV1:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[FOR_BODY7]] ], [ getelementptr inbounds nuw (i8, ptr @b, i32 4), [[FOR_COND_PREHEADER:%.*]] ]
 ; CHECK-NEXT:    [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[FOR_BODY7]] ], [ 8, [[FOR_COND_PREHEADER]] ]
 ; CHECK-NEXT:    [[INDVARS_IV77:%.*]] = phi i32 [ [[INDVARS_IV_NEXT78:%.*]], [[FOR_BODY7]] ], [ 1, [[FOR_COND_PREHEADER]] ]
 ; CHECK-NEXT:    [[INDVARS_IV_NEXT78]] = add i32 [[INDVARS_IV77]], 1
diff --git a/llvm/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll b/llvm/test/Transforms/LoopStrengthReduce/X86/2012-01-13-phielim.ll
@@ -96,7 +96,7 @@ define void @test2(i32 %n) nounwind uwtable {
 ; CHECK-NEXT:    br label [[FOR_COND468:%.*]]
 ; CHECK:       for.cond468:
 ; CHECK-NEXT:    [[LSR_IV1:%.*]] = phi i32 [ 1, [[FOR_COND468_PREHEADER]] ], [ [[LSR_IV_NEXT:%.*]], [[IF_THEN477:%.*]] ]
-; CHECK-NEXT:    [[LSR_IV:%.*]] = phi ptr [ getelementptr inbounds (i8, ptr @tags, i64 8), [[FOR_COND468_PREHEADER]] ], [ [[SCEVGEP:%.*]], [[IF_THEN477]] ]
+; CHECK-NEXT:    [[LSR_IV:%.*]] = phi ptr [ getelementptr inbounds nuw (i8, ptr @tags, i64 8), [[FOR_COND468_PREHEADER]] ], [ [[SCEVGEP:%.*]], [[IF_THEN477]] ]
 ; CHECK-NEXT:    [[K_0:%.*]] = load i32, ptr [[LSR_IV]], align 4
 ; CHECK-NEXT:    [[CMP469:%.*]] = icmp slt i32 [[LSR_IV1]], [[N:%.*]]
 ; CHECK-NEXT:    br i1 [[CMP469]], label [[FOR_BODY471:%.*]], label [[FOR_INC498_PREHEADER:%.*]]
diff --git a/llvm/test/Transforms/LoopStrengthReduce/post-inc-icmpzero.ll b/llvm/test/Transforms/LoopStrengthReduce/post-inc-icmpzero.ll
@@ -18,7 +18,7 @@ define void @_Z15IntegerToStringjjR7Vector2(i32 %i, i32 %radix, ptr nocapture %r
 ; CHECK-NEXT:    [[ADD_PTR:%.*]] = getelementptr [33 x i16], ptr [[BUFFER]], i64 0, i64 33
 ; CHECK-NEXT:    [[SUB_PTR_LHS_CAST:%.*]] = ptrtoint ptr [[ADD_PTR]] to i64
 ; CHECK-NEXT:    [[SUB_PTR_RHS_CAST:%.*]] = ptrtoint ptr [[ADD_PTR]] to i64
-; CHECK-NEXT:    [[SCEVGEP3:%.*]] = getelementptr i8, ptr [[BUFFER]], i64 64
+; CHECK-NEXT:    [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[BUFFER]], i64 64
 ; CHECK-NEXT:    br label [[DO_BODY:%.*]]
 ; CHECK:       do.body:
 ; CHECK-NEXT:    [[LSR_IV10:%.*]] = phi i64 [ [[LSR_IV_NEXT11:%.*]], [[DO_BODY]] ], [ -1, [[ENTRY:%.*]] ]
diff --git a/llvm/test/Transforms/LoopVectorize/AArch64/sve-interleaved-accesses.ll b/llvm/test/Transforms/LoopVectorize/AArch64/sve-interleaved-accesses.ll
@@ -1446,7 +1446,7 @@ define void @PR34743(ptr %a, ptr %b, i64 %n) #1 {
 ; CHECK-NEXT:    [[TMP5:%.*]] = and i64 [[TMP4]], -4
 ; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr i8, ptr [[B:%.*]], i64 [[TMP5]]
 ; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[TMP6]], i64 4
-; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[A]], i64 2
+; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr nuw i8, ptr [[A]], i64 2
 ; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP5]]
 ; CHECK-NEXT:    [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[TMP7]], i64 6
 ; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr [[B]], [[SCEVGEP2]]
diff --git a/llvm/test/Transforms/LoopVectorize/induction.ll b/llvm/test/Transforms/LoopVectorize/induction.ll
@@ -1552,7 +1552,7 @@ define void @scalarize_induction_variable_04(ptr %a, ptr %p, i32 %n) {
 ; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP2]], 2
 ; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
 ; CHECK:       vector.memcheck:
-; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 4
 ; CHECK-NEXT:    [[TMP3:%.*]] = add i32 [[N]], -1
 ; CHECK-NEXT:    [[TMP4:%.*]] = zext i32 [[TMP3]] to i64
 ; CHECK-NEXT:    [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 3
@@ -1617,7 +1617,7 @@ define void @scalarize_induction_variable_04(ptr %a, ptr %p, i32 %n) {
 ; IND-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp eq i32 [[TMP0]], 0
 ; IND-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
 ; IND:       vector.memcheck:
-; IND-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4
+; IND-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 4
 ; IND-NEXT:    [[TMP3:%.*]] = add i32 [[N]], -1
 ; IND-NEXT:    [[TMP4:%.*]] = zext i32 [[TMP3]] to i64
 ; IND-NEXT:    [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 3
@@ -1680,7 +1680,7 @@ define void @scalarize_induction_variable_04(ptr %a, ptr %p, i32 %n) {
 ; UNROLL-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0]], 3
 ; UNROLL-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
 ; UNROLL:       vector.memcheck:
-; UNROLL-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4
+; UNROLL-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 4
 ; UNROLL-NEXT:    [[TMP3:%.*]] = add i32 [[N]], -1
 ; UNROLL-NEXT:    [[TMP4:%.*]] = zext i32 [[TMP3]] to i64
 ; UNROLL-NEXT:    [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 3
@@ -1757,7 +1757,7 @@ define void @scalarize_induction_variable_04(ptr %a, ptr %p, i32 %n) {
 ; UNROLL-NO-IC-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP2]], 4
 ; UNROLL-NO-IC-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
 ; UNROLL-NO-IC:       vector.memcheck:
-; UNROLL-NO-IC-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4
+; UNROLL-NO-IC-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 4
 ; UNROLL-NO-IC-NEXT:    [[TMP3:%.*]] = add i32 [[N]], -1
 ; UNROLL-NO-IC-NEXT:    [[TMP4:%.*]] = zext i32 [[TMP3]] to i64
 ; UNROLL-NO-IC-NEXT:    [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 3
@@ -1836,7 +1836,7 @@ define void @scalarize_induction_variable_04(ptr %a, ptr %p, i32 %n) {
 ; INTERLEAVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP0]], 8
 ; INTERLEAVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
 ; INTERLEAVE:       vector.memcheck:
-; INTERLEAVE-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4
+; INTERLEAVE-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[P:%.*]], i64 4
 ; INTERLEAVE-NEXT:    [[TMP3:%.*]] = add i32 [[N]], -1
 ; INTERLEAVE-NEXT:    [[TMP4:%.*]] = zext i32 [[TMP3]] to i64
 ; INTERLEAVE-NEXT:    [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 3
diff --git a/llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll b/llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll
@@ -1478,7 +1478,7 @@ define void @PR34743(ptr %a, ptr %b, i64 %n) {
 ; CHECK-NEXT:    [[TMP3:%.*]] = and i64 [[TMP2]], -4
 ; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr i8, ptr [[B:%.*]], i64 [[TMP3]]
 ; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[TMP4]], i64 4
-; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[A]], i64 2
+; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr nuw i8, ptr [[A]], i64 2
 ; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP3]]
 ; CHECK-NEXT:    [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[TMP5]], i64 6
 ; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr [[B]], [[SCEVGEP2]]
diff --git a/llvm/test/Transforms/LoopVectorize/multiple-strides-vectorization.ll b/llvm/test/Transforms/LoopVectorize/multiple-strides-vectorization.ll
@@ -38,12 +38,12 @@ define void @Test(ptr nocapture %obj, i64 %z) #0 {
 ; CHECK-NEXT:    [[I:%.*]] = phi i64 [ 0, [[TMP0:%.*]] ], [ [[I_NEXT:%.*]], [[DOTOUTER:%.*]] ]
 ; CHECK-NEXT:    [[TMP3:%.*]] = shl nuw nsw i64 [[I]], 7
 ; CHECK-NEXT:    [[TMP4:%.*]] = add i64 [[TMP3]], 256
-; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP4]]
+; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[OBJ]], i64 [[TMP4]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = add i64 [[TMP2]], [[TMP3]]
 ; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP5]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = shl nuw nsw i64 [[I]], 2
 ; CHECK-NEXT:    [[TMP7:%.*]] = add i64 [[TMP6]], 128
-; CHECK-NEXT:    [[SCEVGEP3:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP7]]
+; CHECK-NEXT:    [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[OBJ]], i64 [[TMP7]]
 ; CHECK-NEXT:    [[TMP8:%.*]] = add i64 [[TMP6]], 132
 ; CHECK-NEXT:    [[SCEVGEP4:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP8]]
 ; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], ptr [[OBJ]], i64 0, i32 1, i64 [[I]]
@@ -107,12 +107,12 @@ define void @Test(ptr nocapture %obj, i64 %z) #0 {
 ; CHECK-NEXT:    br i1 [[EXITCOND_INNER]], label [[DOTOUTER]], label [[DOTINNER]], !llvm.loop [[LOOP11:![0-9]+]]
 ;
 ; CHECK-HOIST-LABEL: @Test(
-; CHECK-HOIST-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[OBJ:%.*]], i64 256
+; CHECK-HOIST-NEXT:    [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[OBJ:%.*]], i64 256
 ; CHECK-HOIST-NEXT:    [[TMP1:%.*]] = shl i64 [[Z:%.*]], 2
 ; CHECK-HOIST-NEXT:    [[TMP2:%.*]] = add i64 [[TMP1]], 4224
 ; CHECK-HOIST-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP2]]
 ; CHECK-HOIST-NEXT:    [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP1]]
-; CHECK-HOIST-NEXT:    [[SCEVGEP3:%.*]] = getelementptr i8, ptr [[OBJ]], i64 128
+; CHECK-HOIST-NEXT:    [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[OBJ]], i64 128
 ; CHECK-HOIST-NEXT:    br label [[DOTOUTER_PREHEADER:%.*]]
 ; CHECK-HOIST:       .outer.preheader:
 ; CHECK-HOIST-NEXT:    [[I:%.*]] = phi i64 [ 0, [[TMP0:%.*]] ], [ [[I_NEXT:%.*]], [[DOTOUTER:%.*]] ]
diff --git a/llvm/test/Transforms/LoopVectorize/pr47343-expander-lcssa-after-cfg-update.ll b/llvm/test/Transforms/LoopVectorize/pr47343-expander-lcssa-after-cfg-update.ll
@@ -39,7 +39,7 @@ define void @f() {
 ; CHECK:       vector.memcheck:
 ; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[TMP1]], i64 1
 ; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr @f.e, [[SCEVGEP]]
-; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr [[TMP1]], getelementptr inbounds (i8, ptr @f.e, i64 4)
+; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr [[TMP1]], getelementptr inbounds nuw (i8, ptr @f.e, i64 4)
 ; CHECK-NEXT:    [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
 ; CHECK-NEXT:    br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
 ; CHECK:       vector.ph:
diff --git a/llvm/test/Transforms/LoopVectorize/runtime-checks-difference.ll b/llvm/test/Transforms/LoopVectorize/runtime-checks-difference.ll
@@ -183,7 +183,7 @@ define void @nested_loop_outer_iv_addrec_invariant_in_inner1(ptr %a, ptr %b, i64
 
 ; CHECK:       outer.header:
 ; CHECK:         [[OUTER_IV_SHL_2:%.]] = shl i64 %outer.iv, 2
-; CHECK-NEXT:    [[A_GEP_UPPER:%.*]] = getelementptr i8, ptr %a, i64 [[OUTER_IV_SHL_2]]
+; CHECK-NEXT:    [[A_GEP_UPPER:%.*]] = getelementptr nuw i8, ptr %a, i64 [[OUTER_IV_SHL_2]]
 ; CHECK-NEXT:    [[OUTER_IV_4:%.]] = add i64 [[OUTER_IV_SHL_2]], 4
 ; CHECK-NEXT:    [[A_GEP_UPPER_4:%.*]] = getelementptr i8, ptr %a, i64 [[OUTER_IV_4]]
 ; CHECK:         [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
@@ -233,7 +233,7 @@ define void @nested_loop_outer_iv_addrec_invariant_in_inner2(ptr %a, ptr %b, i64
 
 ; CHECK:       outer.header:
 ; CHECK:         [[OUTER_IV_SHL_2:%.]] = shl i64 %outer.iv, 2
-; CHECK-NEXT:    [[A_GEP_UPPER:%.*]] = getelementptr i8, ptr %a, i64 [[OUTER_IV_SHL_2]]
+; CHECK-NEXT:    [[A_GEP_UPPER:%.*]] = getelementptr nuw i8, ptr %a, i64 [[OUTER_IV_SHL_2]]
 ; CHECK-NEXT:    [[OUTER_IV_4:%.]] = add i64 [[OUTER_IV_SHL_2]], 4
 ; CHECK-NEXT:    [[A_GEP_UPPER_4:%.*]] = getelementptr i8, ptr %a, i64 [[OUTER_IV_4]]
 ; CHECK:         [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4
diff --git a/llvm/test/Transforms/LoopVersioning/add-phi-update-users.ll b/llvm/test/Transforms/LoopVersioning/add-phi-update-users.ll
diff --git a/llvm/test/Transforms/LoopVersioning/bound-check-partially-known.ll b/llvm/test/Transforms/LoopVersioning/bound-check-partially-known.ll
