[LV] Precommit masked interleaved access tests

[igor.kirillov]

Summary

Precommit for D152258.

llvm/test/Transforms/LoopVectorize/AArch64/sve-interleaved-masked-accesses.ll

+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
+; RUN: opt -mtriple=aarch64-none-linux-gnu -S -passes=loop-vectorize,instcombine -mattr=+sve -force-vector-width=16 -force-vector-interleave=1 -scalable-vectorization=on -prefer-predicate-over-epilogue=scalar-epilogue %s 2>&1 | FileCheck %s -check-prefix=SCALAR_TAIL_FOLDING
+; RUN: opt -mtriple=aarch64-none-linux-gnu -S -passes=loop-vectorize,instcombine -mattr=+sve -force-vector-width=16 -force-vector-interleave=1 -scalable-vectorization=on -prefer-predicate-over-epilogue=predicate-dont-vectorize %s 2>&1 | FileCheck %s -check-prefix=PREDICATED_TAIL_FOLDING
+
+target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
+
+; Tests are taken from llvm/test/Transforms/LoopVectorize/interleaved-accesses-masked-group.ll
+;
+; Expected to contain interleave2/deinterleave2 instructions
+;
+; void masked_strided1(const unsigned char* restrict p,
+;                     unsigned char* restrict q,
+;                     unsigned char guard) {
+; for(ix=0; ix < 1024; ++ix) {
+;     if (ix > guard) {
+;         char left = p[2*ix];
+;         char right = p[2*ix + 1];
+;         char max = max(left, right);
+;         q[2*ix] = max;
+;         q[2*ix+1] = 0 - max;
+;     }
+; }
+;}
+define dso_local void @masked_strided1(ptr noalias nocapture readonly %p, ptr noalias nocapture %q, i8 zeroext %guard) local_unnamed_addr #0 {
+; SCALAR_TAIL_FOLDING-LABEL: define dso_local void @masked_strided1
+; SCALAR_TAIL_FOLDING-SAME: (ptr noalias nocapture readonly [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i8 zeroext [[GUARD:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+; SCALAR_TAIL_FOLDING-NEXT:  entry:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CONV:%.*]] = zext i8 [[GUARD]] to i32
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP1:%.*]] = shl i32 [[TMP0]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ugt i32 [[TMP1]], 1024
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; SCALAR_TAIL_FOLDING:       vector.ph:
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP2:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP3:%.*]] = shl i32 [[TMP2]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[N_MOD_VF:%.*]] = urem i32 1024, [[TMP3]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[N_VEC:%.*]] = sub nuw nsw i32 1024, [[N_MOD_VF]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP4:%.*]] = call <vscale x 16 x i32> @llvm.experimental.stepvector.nxv16i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP5:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP6:%.*]] = shl i32 [[TMP5]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[TMP6]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[DOTSPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[VECTOR_BODY:%.*]]
+; SCALAR_TAIL_FOLDING:       vector.body:
+; SCALAR_TAIL_FOLDING-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 16 x i32> [ [[TMP4]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP7:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP8:%.*]] = shl nuw nsw <vscale x 16 x i32> [[VEC_IND]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP9:%.*]] = zext <vscale x 16 x i32> [[TMP8]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[P]], <vscale x 16 x i64> [[TMP9]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[WIDE_MASKED_GATHER:%.*]] = call <vscale x 16 x i8> @llvm.masked.gather.nxv16i8.nxv16p0(<vscale x 16 x ptr> [[TMP10]], i32 1, <vscale x 16 x i1> [[TMP7]], <vscale x 16 x i8> poison)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP11:%.*]] = or <vscale x 16 x i32> [[TMP8]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP12:%.*]] = zext <vscale x 16 x i32> [[TMP11]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i8, ptr [[P]], <vscale x 16 x i64> [[TMP12]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[WIDE_MASKED_GATHER1:%.*]] = call <vscale x 16 x i8> @llvm.masked.gather.nxv16i8.nxv16p0(<vscale x 16 x ptr> [[TMP13]], i32 1, <vscale x 16 x i1> [[TMP7]], <vscale x 16 x i8> poison)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP14:%.*]] = call <vscale x 16 x i8> @llvm.smax.nxv16i8(<vscale x 16 x i8> [[WIDE_MASKED_GATHER]], <vscale x 16 x i8> [[WIDE_MASKED_GATHER1]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP15:%.*]] = zext <vscale x 16 x i32> [[TMP8]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP16:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP15]]
+; SCALAR_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> [[TMP14]], <vscale x 16 x ptr> [[TMP16]], i32 1, <vscale x 16 x i1> [[TMP7]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP17:%.*]] = sub <vscale x 16 x i8> zeroinitializer, [[TMP14]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP18:%.*]] = zext <vscale x 16 x i32> [[TMP11]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP19:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP18]]
+; SCALAR_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> [[TMP17]], <vscale x 16 x ptr> [[TMP19]], i32 1, <vscale x 16 x i1> [[TMP7]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP20:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP21:%.*]] = shl i32 [[TMP20]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], [[TMP21]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 16 x i32> [[VEC_IND]], [[DOTSPLAT]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP22:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
+; SCALAR_TAIL_FOLDING:       middle.block:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; SCALAR_TAIL_FOLDING:       scalar.ph:
+; SCALAR_TAIL_FOLDING-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[FOR_BODY:%.*]]
+; SCALAR_TAIL_FOLDING:       for.body:
+; SCALAR_TAIL_FOLDING-NEXT:    [[IX_024:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_INC:%.*]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP1:%.*]] = icmp ugt i32 [[IX_024]], [[CONV]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]]
+; SCALAR_TAIL_FOLDING:       if.then:
+; SCALAR_TAIL_FOLDING-NEXT:    [[MUL:%.*]] = shl nuw nsw i32 [[IX_024]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP23:%.*]] = zext i32 [[MUL]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 [[TMP23]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP24:%.*]] = load i8, ptr [[ARRAYIDX]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[ADD:%.*]] = or i32 [[MUL]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP25:%.*]] = zext i32 [[ADD]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX4:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 [[TMP25]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP26:%.*]] = load i8, ptr [[ARRAYIDX4]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[SPEC_SELECT_I:%.*]] = call i8 @llvm.smax.i8(i8 [[TMP24]], i8 [[TMP26]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP27:%.*]] = zext i32 [[MUL]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX6:%.*]] = getelementptr inbounds i8, ptr [[Q]], i64 [[TMP27]]
+; SCALAR_TAIL_FOLDING-NEXT:    store i8 [[SPEC_SELECT_I]], ptr [[ARRAYIDX6]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[SUB:%.*]] = sub i8 0, [[SPEC_SELECT_I]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP28:%.*]] = zext i32 [[ADD]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr inbounds i8, ptr [[Q]], i64 [[TMP28]]
+; SCALAR_TAIL_FOLDING-NEXT:    store i8 [[SUB]], ptr [[ARRAYIDX11]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[FOR_INC]]
+; SCALAR_TAIL_FOLDING:       for.inc:
+; SCALAR_TAIL_FOLDING-NEXT:    [[INC]] = add nuw nsw i32 [[IX_024]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 1024
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
+; SCALAR_TAIL_FOLDING:       for.end:
+; SCALAR_TAIL_FOLDING-NEXT:    ret void
+;
+; PREDICATED_TAIL_FOLDING-LABEL: define dso_local void @masked_strided1
+; PREDICATED_TAIL_FOLDING-SAME: (ptr noalias nocapture readonly [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i8 zeroext [[GUARD:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+; PREDICATED_TAIL_FOLDING-NEXT:  entry:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; PREDICATED_TAIL_FOLDING:       vector.ph:
+; PREDICATED_TAIL_FOLDING-NEXT:    [[CONV:%.*]] = zext i8 [[GUARD]] to i32
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP1:%.*]] = shl i32 [[TMP0]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP2:%.*]] = call i32 @llvm.usub.sat.i32(i32 1024, i32 [[TMP1]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK_ENTRY:%.*]] = call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i32(i32 0, i32 1024)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP3:%.*]] = call <vscale x 16 x i32> @llvm.experimental.stepvector.nxv16i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP4:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP5:%.*]] = shl i32 [[TMP4]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[TMP5]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[DOTSPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[VECTOR_BODY:%.*]]
+; PREDICATED_TAIL_FOLDING:       vector.body:
+; PREDICATED_TAIL_FOLDING-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK:%.*]] = phi <vscale x 16 x i1> [ [[ACTIVE_LANE_MASK_ENTRY]], [[VECTOR_PH]] ], [ [[ACTIVE_LANE_MASK_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 16 x i32> [ [[TMP3]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP6:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP7:%.*]] = shl nuw nsw <vscale x 16 x i32> [[VEC_IND]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP8:%.*]] = zext <vscale x 16 x i32> [[TMP7]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[P]], <vscale x 16 x i64> [[TMP8]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP10:%.*]] = select <vscale x 16 x i1> [[ACTIVE_LANE_MASK]], <vscale x 16 x i1> [[TMP6]], <vscale x 16 x i1> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    [[WIDE_MASKED_GATHER:%.*]] = call <vscale x 16 x i8> @llvm.masked.gather.nxv16i8.nxv16p0(<vscale x 16 x ptr> [[TMP9]], i32 1, <vscale x 16 x i1> [[TMP10]], <vscale x 16 x i8> poison)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP11:%.*]] = or <vscale x 16 x i32> [[TMP7]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP12:%.*]] = zext <vscale x 16 x i32> [[TMP11]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i8, ptr [[P]], <vscale x 16 x i64> [[TMP12]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[WIDE_MASKED_GATHER1:%.*]] = call <vscale x 16 x i8> @llvm.masked.gather.nxv16i8.nxv16p0(<vscale x 16 x ptr> [[TMP13]], i32 1, <vscale x 16 x i1> [[TMP10]], <vscale x 16 x i8> poison)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP14:%.*]] = call <vscale x 16 x i8> @llvm.smax.nxv16i8(<vscale x 16 x i8> [[WIDE_MASKED_GATHER]], <vscale x 16 x i8> [[WIDE_MASKED_GATHER1]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP15:%.*]] = zext <vscale x 16 x i32> [[TMP7]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP16:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP15]]
+; PREDICATED_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> [[TMP14]], <vscale x 16 x ptr> [[TMP16]], i32 1, <vscale x 16 x i1> [[TMP10]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP17:%.*]] = sub <vscale x 16 x i8> zeroinitializer, [[TMP14]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP18:%.*]] = zext <vscale x 16 x i32> [[TMP11]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP19:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP18]]
+; PREDICATED_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> [[TMP17]], <vscale x 16 x ptr> [[TMP19]], i32 1, <vscale x 16 x i1> [[TMP10]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK_NEXT]] = call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i32(i32 [[INDEX]], i32 [[TMP2]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP20:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP21:%.*]] = shl i32 [[TMP20]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[INDEX_NEXT]] = add i32 [[INDEX]], [[TMP21]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 16 x i32> [[VEC_IND]], [[DOTSPLAT]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP22:%.*]] = extractelement <vscale x 16 x i1> [[ACTIVE_LANE_MASK_NEXT]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 [[TMP22]], label [[VECTOR_BODY]], label [[MIDDLE_BLOCK:%.*]], !llvm.loop [[LOOP0:![0-9]+]]
+; PREDICATED_TAIL_FOLDING:       middle.block:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; PREDICATED_TAIL_FOLDING:       scalar.ph:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[FOR_BODY:%.*]]
+; PREDICATED_TAIL_FOLDING:       for.body:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[IF_THEN:%.*]], label [[FOR_INC:%.*]]
+; PREDICATED_TAIL_FOLDING:       if.then:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[FOR_INC]]
+; PREDICATED_TAIL_FOLDING:       for.inc:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
+; PREDICATED_TAIL_FOLDING:       for.end:
+; PREDICATED_TAIL_FOLDING-NEXT:    ret void
+;
+entry:
+  %conv = zext i8 %guard to i32
+  br label %for.body
+
+for.body:
+  %ix.024 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
+  %cmp1 = icmp ugt i32 %ix.024, %conv
+  br i1 %cmp1, label %if.then, label %for.inc
+
+if.then:
+  %mul = shl nuw nsw i32 %ix.024, 1
+  %arrayidx = getelementptr inbounds i8, ptr %p, i32 %mul
+  %0 = load i8, ptr %arrayidx, align 1
+  %add = or i32 %mul, 1
+  %arrayidx4 = getelementptr inbounds i8, ptr %p, i32 %add
+  %1 = load i8, ptr %arrayidx4, align 1
+  %cmp.i = icmp slt i8 %0, %1
+  %spec.select.i = select i1 %cmp.i, i8 %1, i8 %0
+  %arrayidx6 = getelementptr inbounds i8, ptr %q, i32 %mul
+  store i8 %spec.select.i, ptr %arrayidx6, align 1
+  %sub = sub i8 0, %spec.select.i
+  %arrayidx11 = getelementptr inbounds i8, ptr %q, i32 %add
+  store i8 %sub, ptr %arrayidx11, align 1
+  br label %for.inc
+
+for.inc:
+  %inc = add nuw nsw i32 %ix.024, 1
+  %exitcond = icmp eq i32 %inc, 1024
+  br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+  ret void
+}
+
+; Expected not to have interleave2/deinterleave2 instructions
+;
+; void masked_strided2(const unsigned char* restrict p,
+;                     unsigned char* restrict q,
+;                     unsigned char guard1,
+;                     unsigned char guard2) {
+; for(ix=0; ix < 1024; ++ix) {
+;     if (ix > guard1) {
+;         q[2*ix] = 1;
+;     }
+;     q[2*ix+1] = 2;
+; }
+;}
+define dso_local void @masked_strided2(ptr noalias nocapture readnone %p, ptr noalias nocapture %q, i8 zeroext %guard) local_unnamed_addr #0 {
+; SCALAR_TAIL_FOLDING-LABEL: define dso_local void @masked_strided2
+; SCALAR_TAIL_FOLDING-SAME: (ptr noalias nocapture readnone [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i8 zeroext [[GUARD:%.*]]) local_unnamed_addr #[[ATTR0]] {
+; SCALAR_TAIL_FOLDING-NEXT:  entry:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CONV:%.*]] = zext i8 [[GUARD]] to i32
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP1:%.*]] = shl i32 [[TMP0]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ugt i32 [[TMP1]], 1024
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; SCALAR_TAIL_FOLDING:       vector.ph:
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP2:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP3:%.*]] = shl i32 [[TMP2]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[N_MOD_VF:%.*]] = urem i32 1024, [[TMP3]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[N_VEC:%.*]] = sub nuw nsw i32 1024, [[N_MOD_VF]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP4:%.*]] = call <vscale x 16 x i32> @llvm.experimental.stepvector.nxv16i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP5:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP6:%.*]] = shl i32 [[TMP5]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[TMP6]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[DOTSPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[VECTOR_BODY:%.*]]
+; SCALAR_TAIL_FOLDING:       vector.body:
+; SCALAR_TAIL_FOLDING-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 16 x i32> [ [[TMP4]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP7:%.*]] = shl nuw nsw <vscale x 16 x i32> [[VEC_IND]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP8:%.*]] = zext <vscale x 16 x i32> [[TMP7]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP8]]
+; SCALAR_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP9]], i32 1, <vscale x 16 x i1> shufflevector (<vscale x 16 x i1> insertelement (<vscale x 16 x i1> poison, i1 true, i64 0), <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer))
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP10:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP11:%.*]] = or <vscale x 16 x i32> [[TMP7]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP12:%.*]] = zext <vscale x 16 x i32> [[TMP11]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP12]]
+; SCALAR_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 2, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP13]], i32 1, <vscale x 16 x i1> [[TMP10]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP14:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP15:%.*]] = shl i32 [[TMP14]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], [[TMP15]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 16 x i32> [[VEC_IND]], [[DOTSPLAT]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP16:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
+; SCALAR_TAIL_FOLDING:       middle.block:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; SCALAR_TAIL_FOLDING:       scalar.ph:
+; SCALAR_TAIL_FOLDING-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[FOR_BODY:%.*]]
+; SCALAR_TAIL_FOLDING:       for.body:
+; SCALAR_TAIL_FOLDING-NEXT:    [[IX_012:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_INC:%.*]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[MUL:%.*]] = shl nuw nsw i32 [[IX_012]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP17:%.*]] = zext i32 [[MUL]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[Q]], i64 [[TMP17]]
+; SCALAR_TAIL_FOLDING-NEXT:    store i8 1, ptr [[ARRAYIDX]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP1:%.*]] = icmp ugt i32 [[IX_012]], [[CONV]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]]
+; SCALAR_TAIL_FOLDING:       if.then:
+; SCALAR_TAIL_FOLDING-NEXT:    [[ADD:%.*]] = or i32 [[MUL]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP18:%.*]] = zext i32 [[ADD]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i8, ptr [[Q]], i64 [[TMP18]]
+; SCALAR_TAIL_FOLDING-NEXT:    store i8 2, ptr [[ARRAYIDX3]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[FOR_INC]]
+; SCALAR_TAIL_FOLDING:       for.inc:
+; SCALAR_TAIL_FOLDING-NEXT:    [[INC]] = add nuw nsw i32 [[IX_012]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 1024
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
+; SCALAR_TAIL_FOLDING:       for.end:
+; SCALAR_TAIL_FOLDING-NEXT:    ret void
+;
+; PREDICATED_TAIL_FOLDING-LABEL: define dso_local void @masked_strided2
+; PREDICATED_TAIL_FOLDING-SAME: (ptr noalias nocapture readnone [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i8 zeroext [[GUARD:%.*]]) local_unnamed_addr #[[ATTR0]] {
+; PREDICATED_TAIL_FOLDING-NEXT:  entry:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; PREDICATED_TAIL_FOLDING:       vector.ph:
+; PREDICATED_TAIL_FOLDING-NEXT:    [[CONV:%.*]] = zext i8 [[GUARD]] to i32
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP1:%.*]] = shl i32 [[TMP0]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP2:%.*]] = call i32 @llvm.usub.sat.i32(i32 1024, i32 [[TMP1]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK_ENTRY:%.*]] = call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i32(i32 0, i32 1024)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP3:%.*]] = call <vscale x 16 x i32> @llvm.experimental.stepvector.nxv16i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP4:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP5:%.*]] = shl i32 [[TMP4]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[TMP5]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[DOTSPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[VECTOR_BODY:%.*]]
+; PREDICATED_TAIL_FOLDING:       vector.body:
+; PREDICATED_TAIL_FOLDING-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK:%.*]] = phi <vscale x 16 x i1> [ [[ACTIVE_LANE_MASK_ENTRY]], [[VECTOR_PH]] ], [ [[ACTIVE_LANE_MASK_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 16 x i32> [ [[TMP3]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP6:%.*]] = shl nuw nsw <vscale x 16 x i32> [[VEC_IND]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP7:%.*]] = zext <vscale x 16 x i32> [[TMP6]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP7]]
+; PREDICATED_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP8]], i32 1, <vscale x 16 x i1> [[ACTIVE_LANE_MASK]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP9:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP10:%.*]] = or <vscale x 16 x i32> [[TMP6]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP11:%.*]] = zext <vscale x 16 x i32> [[TMP10]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP11]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP13:%.*]] = select <vscale x 16 x i1> [[ACTIVE_LANE_MASK]], <vscale x 16 x i1> [[TMP9]], <vscale x 16 x i1> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 2, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP12]], i32 1, <vscale x 16 x i1> [[TMP13]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK_NEXT]] = call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i32(i32 [[INDEX]], i32 [[TMP2]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP14:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP15:%.*]] = shl i32 [[TMP14]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[INDEX_NEXT]] = add i32 [[INDEX]], [[TMP15]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 16 x i32> [[VEC_IND]], [[DOTSPLAT]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP16:%.*]] = extractelement <vscale x 16 x i1> [[ACTIVE_LANE_MASK_NEXT]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 [[TMP16]], label [[VECTOR_BODY]], label [[MIDDLE_BLOCK:%.*]], !llvm.loop [[LOOP4:![0-9]+]]
+; PREDICATED_TAIL_FOLDING:       middle.block:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; PREDICATED_TAIL_FOLDING:       scalar.ph:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[FOR_BODY:%.*]]
+; PREDICATED_TAIL_FOLDING:       for.body:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[IF_THEN:%.*]], label [[FOR_INC:%.*]]
+; PREDICATED_TAIL_FOLDING:       if.then:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[FOR_INC]]
+; PREDICATED_TAIL_FOLDING:       for.inc:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
+; PREDICATED_TAIL_FOLDING:       for.end:
+; PREDICATED_TAIL_FOLDING-NEXT:    ret void
+;
+entry:
+  %conv = zext i8 %guard to i32
+  br label %for.body
+
+for.body:
+  %ix.012 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
+  %mul = shl nuw nsw i32 %ix.012, 1
+  %arrayidx = getelementptr inbounds i8, ptr %q, i32 %mul
+  store i8 1, ptr %arrayidx, align 1
+  %cmp1 = icmp ugt i32 %ix.012, %conv
+  br i1 %cmp1, label %if.then, label %for.inc
+
+if.then:
+  %add = or i32 %mul, 1
+  %arrayidx3 = getelementptr inbounds i8, ptr %q, i32 %add
+  store i8 2, ptr %arrayidx3, align 1
+  br label %for.inc
+
+for.inc:
+  %inc = add nuw nsw i32 %ix.012, 1
+  %exitcond = icmp eq i32 %inc, 1024
+  br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+  ret void
+}
+
+; Expected not to have interleave2/deinterleave2 instructions
+;
+; void masked_strided3(const unsigned char* restrict p,
+;                     unsigned char* restrict q,
+;                     unsigned char guard1,
+;                     unsigned char guard2) {
+; for(ix=0; ix < 1024; ++ix) {
+;     if (ix > guard1) {
+;         q[2*ix] = 1;
+;     }
+;     if (ix > guard2) {
+;         q[2*ix+1] = 2;
+;     }
+; }
+;}
+define dso_local void @masked_strided3(ptr noalias nocapture readnone %p, ptr noalias nocapture %q, i8 zeroext %guard1, i8 zeroext %guard2) local_unnamed_addr #0 {
+; SCALAR_TAIL_FOLDING-LABEL: define dso_local void @masked_strided3
+; SCALAR_TAIL_FOLDING-SAME: (ptr noalias nocapture readnone [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i8 zeroext [[GUARD1:%.*]], i8 zeroext [[GUARD2:%.*]]) local_unnamed_addr #[[ATTR0]] {
+; SCALAR_TAIL_FOLDING-NEXT:  entry:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CONV:%.*]] = zext i8 [[GUARD1]] to i32
+; SCALAR_TAIL_FOLDING-NEXT:    [[CONV3:%.*]] = zext i8 [[GUARD2]] to i32
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP1:%.*]] = shl i32 [[TMP0]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ugt i32 [[TMP1]], 1024
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; SCALAR_TAIL_FOLDING:       vector.ph:
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP2:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP3:%.*]] = shl i32 [[TMP2]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[N_MOD_VF:%.*]] = urem i32 1024, [[TMP3]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[N_VEC:%.*]] = sub nuw nsw i32 1024, [[N_MOD_VF]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP4:%.*]] = call <vscale x 16 x i32> @llvm.experimental.stepvector.nxv16i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP5:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP6:%.*]] = shl i32 [[TMP5]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[TMP6]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[DOTSPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV3]], i64 0
+; SCALAR_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT1]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[VECTOR_BODY:%.*]]
+; SCALAR_TAIL_FOLDING:       vector.body:
+; SCALAR_TAIL_FOLDING-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 16 x i32> [ [[TMP4]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP7:%.*]] = shl nuw nsw <vscale x 16 x i32> [[VEC_IND]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP8:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP9:%.*]] = zext <vscale x 16 x i32> [[TMP7]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP9]]
+; SCALAR_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP10]], i32 1, <vscale x 16 x i1> [[TMP8]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP11:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP12:%.*]] = or <vscale x 16 x i32> [[TMP7]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP13:%.*]] = zext <vscale x 16 x i32> [[TMP12]] to <vscale x 16 x i64>
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP14:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP13]]
+; SCALAR_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 2, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP14]], i32 1, <vscale x 16 x i1> [[TMP11]])
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vscale.i32()
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP16:%.*]] = shl i32 [[TMP15]], 4
+; SCALAR_TAIL_FOLDING-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], [[TMP16]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 16 x i32> [[VEC_IND]], [[DOTSPLAT]]
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP17:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
+; SCALAR_TAIL_FOLDING:       middle.block:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; SCALAR_TAIL_FOLDING:       scalar.ph:
+; SCALAR_TAIL_FOLDING-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[FOR_BODY:%.*]]
+; SCALAR_TAIL_FOLDING:       for.body:
+; SCALAR_TAIL_FOLDING-NEXT:    [[IX_018:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_INC:%.*]] ]
+; SCALAR_TAIL_FOLDING-NEXT:    [[MUL:%.*]] = shl nuw nsw i32 [[IX_018]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP1:%.*]] = icmp ugt i32 [[IX_018]], [[CONV]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
+; SCALAR_TAIL_FOLDING:       if.then:
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP18:%.*]] = zext i32 [[MUL]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[Q]], i64 [[TMP18]]
+; SCALAR_TAIL_FOLDING-NEXT:    store i8 1, ptr [[ARRAYIDX]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[IF_END]]
+; SCALAR_TAIL_FOLDING:       if.end:
+; SCALAR_TAIL_FOLDING-NEXT:    [[CMP4:%.*]] = icmp ugt i32 [[IX_018]], [[CONV3]]
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[CMP4]], label [[IF_THEN6:%.*]], label [[FOR_INC]]
+; SCALAR_TAIL_FOLDING:       if.then6:
+; SCALAR_TAIL_FOLDING-NEXT:    [[ADD:%.*]] = or i32 [[MUL]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[TMP19:%.*]] = zext i32 [[ADD]] to i64
+; SCALAR_TAIL_FOLDING-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds i8, ptr [[Q]], i64 [[TMP19]]
+; SCALAR_TAIL_FOLDING-NEXT:    store i8 2, ptr [[ARRAYIDX7]], align 1
+; SCALAR_TAIL_FOLDING-NEXT:    br label [[FOR_INC]]
+; SCALAR_TAIL_FOLDING:       for.inc:
+; SCALAR_TAIL_FOLDING-NEXT:    [[INC]] = add nuw nsw i32 [[IX_018]], 1
+; SCALAR_TAIL_FOLDING-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 1024
+; SCALAR_TAIL_FOLDING-NEXT:    br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
+; SCALAR_TAIL_FOLDING:       for.end:
+; SCALAR_TAIL_FOLDING-NEXT:    ret void
+;
+; PREDICATED_TAIL_FOLDING-LABEL: define dso_local void @masked_strided3
+; PREDICATED_TAIL_FOLDING-SAME: (ptr noalias nocapture readnone [[P:%.*]], ptr noalias nocapture [[Q:%.*]], i8 zeroext [[GUARD1:%.*]], i8 zeroext [[GUARD2:%.*]]) local_unnamed_addr #[[ATTR0]] {
+; PREDICATED_TAIL_FOLDING-NEXT:  entry:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; PREDICATED_TAIL_FOLDING:       vector.ph:
+; PREDICATED_TAIL_FOLDING-NEXT:    [[CONV3:%.*]] = zext i8 [[GUARD2]] to i32
+; PREDICATED_TAIL_FOLDING-NEXT:    [[CONV:%.*]] = zext i8 [[GUARD1]] to i32
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP1:%.*]] = shl i32 [[TMP0]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP2:%.*]] = call i32 @llvm.usub.sat.i32(i32 1024, i32 [[TMP1]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK_ENTRY:%.*]] = call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i32(i32 0, i32 1024)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP3:%.*]] = call <vscale x 16 x i32> @llvm.experimental.stepvector.nxv16i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP4:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP5:%.*]] = shl i32 [[TMP4]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[TMP5]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[DOTSPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <vscale x 16 x i32> poison, i32 [[CONV3]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <vscale x 16 x i32> [[BROADCAST_SPLATINSERT1]], <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[VECTOR_BODY:%.*]]
+; PREDICATED_TAIL_FOLDING:       vector.body:
+; PREDICATED_TAIL_FOLDING-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK:%.*]] = phi <vscale x 16 x i1> [ [[ACTIVE_LANE_MASK_ENTRY]], [[VECTOR_PH]] ], [ [[ACTIVE_LANE_MASK_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 16 x i32> [ [[TMP3]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP6:%.*]] = shl nuw nsw <vscale x 16 x i32> [[VEC_IND]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP7:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP8:%.*]] = zext <vscale x 16 x i32> [[TMP6]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP8]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP10:%.*]] = select <vscale x 16 x i1> [[ACTIVE_LANE_MASK]], <vscale x 16 x i1> [[TMP7]], <vscale x 16 x i1> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP9]], i32 1, <vscale x 16 x i1> [[TMP10]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP11:%.*]] = icmp ugt <vscale x 16 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP12:%.*]] = or <vscale x 16 x i32> [[TMP6]], shufflevector (<vscale x 16 x i32> insertelement (<vscale x 16 x i32> poison, i32 1, i64 0), <vscale x 16 x i32> poison, <vscale x 16 x i32> zeroinitializer)
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP13:%.*]] = zext <vscale x 16 x i32> [[TMP12]] to <vscale x 16 x i64>
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP14:%.*]] = getelementptr inbounds i8, ptr [[Q]], <vscale x 16 x i64> [[TMP13]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP15:%.*]] = select <vscale x 16 x i1> [[ACTIVE_LANE_MASK]], <vscale x 16 x i1> [[TMP11]], <vscale x 16 x i1> zeroinitializer
+; PREDICATED_TAIL_FOLDING-NEXT:    call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 2, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x ptr> [[TMP14]], i32 1, <vscale x 16 x i1> [[TMP15]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[ACTIVE_LANE_MASK_NEXT]] = call <vscale x 16 x i1> @llvm.get.active.lane.mask.nxv16i1.i32(i32 [[INDEX]], i32 [[TMP2]])
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP16:%.*]] = call i32 @llvm.vscale.i32()
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP17:%.*]] = shl i32 [[TMP16]], 4
+; PREDICATED_TAIL_FOLDING-NEXT:    [[INDEX_NEXT]] = add i32 [[INDEX]], [[TMP17]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 16 x i32> [[VEC_IND]], [[DOTSPLAT]]
+; PREDICATED_TAIL_FOLDING-NEXT:    [[TMP18:%.*]] = extractelement <vscale x 16 x i1> [[ACTIVE_LANE_MASK_NEXT]], i64 0
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 [[TMP18]], label [[VECTOR_BODY]], label [[MIDDLE_BLOCK:%.*]], !llvm.loop [[LOOP6:![0-9]+]]
+; PREDICATED_TAIL_FOLDING:       middle.block:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; PREDICATED_TAIL_FOLDING:       scalar.ph:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[FOR_BODY:%.*]]
+; PREDICATED_TAIL_FOLDING:       for.body:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[IF_THEN:%.*]], label [[IF_END:%.*]]
+; PREDICATED_TAIL_FOLDING:       if.then:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[IF_END]]
+; PREDICATED_TAIL_FOLDING:       if.end:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[IF_THEN6:%.*]], label [[FOR_INC:%.*]]
+; PREDICATED_TAIL_FOLDING:       if.then6:
+; PREDICATED_TAIL_FOLDING-NEXT:    br label [[FOR_INC]]
+; PREDICATED_TAIL_FOLDING:       for.inc:
+; PREDICATED_TAIL_FOLDING-NEXT:    br i1 poison, label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
+; PREDICATED_TAIL_FOLDING:       for.end:
+; PREDICATED_TAIL_FOLDING-NEXT:    ret void
+;
+entry:
+  %conv = zext i8 %guard1 to i32
+  %conv3 = zext i8 %guard2 to i32
+  br label %for.body
+
+for.body:
+  %ix.018 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
+  %mul = shl nuw nsw i32 %ix.018, 1
+  %cmp1 = icmp ugt i32 %ix.018, %conv
+  br i1 %cmp1, label %if.then, label %if.end
+
+if.then:
+  %arrayidx = getelementptr inbounds i8, ptr %q, i32 %mul
+  store i8 1, ptr %arrayidx, align 1
+  br label %if.end
+
+if.end:
+  %cmp4 = icmp ugt i32 %ix.018, %conv3
+  br i1 %cmp4, label %if.then6, label %for.inc
+
+if.then6:
+  %add = or i32 %mul, 1
+  %arrayidx7 = getelementptr inbounds i8, ptr %q, i32 %add
+  store i8 2, ptr %arrayidx7, align 1
+  br label %for.inc
+
+for.inc:
+  %inc = add nuw nsw i32 %ix.018, 1
+  %exitcond = icmp eq i32 %inc, 1024
+  br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+  ret void
+}