; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --filter-out-after "^scalar.ph:" --version 4
; RUN: opt --mattr=+neon,+dotprod -passes=loop-vectorize -force-vector-interleave=1 -enable-epilogue-vectorization=false -S < %s | FileCheck %s --check-prefixes=CHECK-NEON
; RUN: opt --mattr=+sve -passes=loop-vectorize -force-vector-interleave=1 -enable-epilogue-vectorization=false -S < %s | FileCheck %s --check-prefixes=CHECK-SVE
; RUN: opt --mattr=+sve -vectorizer-maximize-bandwidth -passes=loop-vectorize -force-vector-width=8 -scalable-vectorization=preferred -force-vector-interleave=1 -enable-epilogue-vectorization=false -S < %s | FileCheck %s --check-prefixes=CHECK-SVE-MAXBW

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-none-unknown-elf"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) vscale_range(1,16)
define i32 @chained_partial_reduce_add_sub(ptr %a, ptr %b, ptr %c, i32 %N) #0 {
; CHECK-NEON-LABEL: define i32 @chained_partial_reduce_add_sub(
; CHECK-NEON-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEON-NEXT:  entry:
; CHECK-NEON-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-NEON-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-NEON-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-NEON-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-NEON:       vector.ph:
; CHECK-NEON-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEON-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-NEON:       vector.body:
; CHECK-NEON-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[TMP1:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP2:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP3:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP4:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP1]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP4]], align 1
; CHECK-NEON-NEXT:    [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP2]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD1:%.*]] = load <16 x i8>, ptr [[TMP5]], align 1
; CHECK-NEON-NEXT:    [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP3]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEON-NEXT:    [[TMP7:%.*]] = sext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP8:%.*]] = sext <16 x i8> [[WIDE_LOAD1]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP9:%.*]] = sext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP10:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP8]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[VEC_PHI]], <16 x i32> [[TMP10]])
; CHECK-NEON-NEXT:    [[TMP12:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP9]]
; CHECK-NEON-NEXT:    [[TMP13:%.*]] = sub <16 x i32> zeroinitializer, [[TMP12]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE3]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE]], <16 x i32> [[TMP13]])
; CHECK-NEON-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEON-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-NEON:       middle.block:
; CHECK-NEON-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PARTIAL_REDUCE3]])
; CHECK-NEON-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-NEON:       scalar.ph:
;
; CHECK-SVE-LABEL: define i32 @chained_partial_reduce_add_sub(
; CHECK-SVE-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-SVE-NEXT:  entry:
; CHECK-SVE-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-SVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE:       vector.ph:
; CHECK-SVE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-SVE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-SVE-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE:       vector.body:
; CHECK-SVE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP19:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-NEXT:    [[TMP13:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP14:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP15:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD2]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-NEXT:    [[TMP17:%.*]] = add <vscale x 4 x i32> [[VEC_PHI]], [[TMP16]]
; CHECK-SVE-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP19]] = sub <vscale x 4 x i32> [[TMP17]], [[TMP18]]
; CHECK-SVE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-SVE:       middle.block:
; CHECK-SVE-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP19]])
; CHECK-SVE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE:       scalar.ph:
;
; CHECK-SVE-MAXBW-LABEL: define i32 @chained_partial_reduce_add_sub(
; CHECK-SVE-MAXBW-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-SVE-MAXBW-NEXT:  entry:
; CHECK-SVE-MAXBW-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-MAXBW-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-MAXBW-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-SVE-MAXBW-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE-MAXBW:       vector.ph:
; CHECK-SVE-MAXBW-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-SVE-MAXBW-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-MAXBW-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-SVE-MAXBW-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE-MAXBW:       vector.body:
; CHECK-SVE-MAXBW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 8 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP13:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP14:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD1]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP15:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD2]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[VEC_PHI]], <vscale x 8 x i32> [[TMP16]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP17:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP18:%.*]] = sub <vscale x 8 x i32> zeroinitializer, [[TMP17]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE3]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE]], <vscale x 8 x i32> [[TMP18]])
; CHECK-SVE-MAXBW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-SVE-MAXBW:       middle.block:
; CHECK-SVE-MAXBW-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> [[PARTIAL_REDUCE3]])
; CHECK-SVE-MAXBW-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE-MAXBW:       scalar.ph:
;
entry:
  %cmp28.not = icmp ult i32 %N, 2
  %div27 = lshr i32 %N, 1
  %wide.trip.count = zext nneg i32 %div27 to i64
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
  %res.0.lcssa = phi i32 [ %sub, %for.body ]
  ret i32 %res.0.lcssa

for.body:                                         ; preds = %for.body.preheader, %for.body
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %res = phi i32 [ 0, %entry ], [ %sub, %for.body ]
  %a.ptr = getelementptr inbounds nuw i8, ptr %a, i64 %indvars.iv
  %b.ptr = getelementptr inbounds nuw i8, ptr %b, i64 %indvars.iv
  %c.ptr = getelementptr inbounds nuw i8, ptr %c, i64 %indvars.iv
  %a.val = load i8, ptr %a.ptr, align 1
  %b.val = load i8, ptr %b.ptr, align 1
  %c.val = load i8, ptr %c.ptr, align 1
  %a.ext = sext i8 %a.val to i32
  %b.ext = sext i8 %b.val to i32
  %c.ext = sext i8 %c.val to i32
  %mul.ab = mul nsw i32 %a.ext, %b.ext
  %add = add nsw i32 %res, %mul.ab
  %mul.ac = mul nsw i32 %a.ext, %c.ext
  %sub = sub i32 %add, %mul.ac
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !loop !1
}

define i32 @chained_partial_reduce_add_add(ptr %a, ptr %b, ptr %c, i32 %N) #0 {
; CHECK-NEON-LABEL: define i32 @chained_partial_reduce_add_add(
; CHECK-NEON-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-NEON-NEXT:  entry:
; CHECK-NEON-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-NEON-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-NEON-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-NEON-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-NEON:       vector.ph:
; CHECK-NEON-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEON-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-NEON:       vector.body:
; CHECK-NEON-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[TMP1:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP2:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP3:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP4:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP1]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP4]], align 1
; CHECK-NEON-NEXT:    [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP2]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD1:%.*]] = load <16 x i8>, ptr [[TMP5]], align 1
; CHECK-NEON-NEXT:    [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP3]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEON-NEXT:    [[TMP7:%.*]] = sext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP8:%.*]] = sext <16 x i8> [[WIDE_LOAD1]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP9:%.*]] = sext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP10:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP8]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[VEC_PHI]], <16 x i32> [[TMP10]])
; CHECK-NEON-NEXT:    [[TMP11:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP9]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE3]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE]], <16 x i32> [[TMP11]])
; CHECK-NEON-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEON-NEXT:    [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-NEON:       middle.block:
; CHECK-NEON-NEXT:    [[TMP13:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PARTIAL_REDUCE3]])
; CHECK-NEON-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-NEON:       scalar.ph:
;
; CHECK-SVE-LABEL: define i32 @chained_partial_reduce_add_add(
; CHECK-SVE-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-NEXT:  entry:
; CHECK-SVE-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-SVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE:       vector.ph:
; CHECK-SVE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-SVE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-SVE-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE:       vector.body:
; CHECK-SVE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP19:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-NEXT:    [[TMP13:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP14:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP15:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD2]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-NEXT:    [[TMP17:%.*]] = add <vscale x 4 x i32> [[VEC_PHI]], [[TMP16]]
; CHECK-SVE-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP19]] = add <vscale x 4 x i32> [[TMP17]], [[TMP18]]
; CHECK-SVE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-SVE:       middle.block:
; CHECK-SVE-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP19]])
; CHECK-SVE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE:       scalar.ph:
;
; CHECK-SVE-MAXBW-LABEL: define i32 @chained_partial_reduce_add_add(
; CHECK-SVE-MAXBW-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-MAXBW-NEXT:  entry:
; CHECK-SVE-MAXBW-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-MAXBW-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-MAXBW-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-SVE-MAXBW-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE-MAXBW:       vector.ph:
; CHECK-SVE-MAXBW-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-SVE-MAXBW-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-MAXBW-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-SVE-MAXBW-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE-MAXBW:       vector.body:
; CHECK-SVE-MAXBW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 8 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP13:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP14:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD1]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP15:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD2]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[VEC_PHI]], <vscale x 8 x i32> [[TMP16]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP17:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE3]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE]], <vscale x 8 x i32> [[TMP17]])
; CHECK-SVE-MAXBW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-SVE-MAXBW:       middle.block:
; CHECK-SVE-MAXBW-NEXT:    [[TMP19:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> [[PARTIAL_REDUCE3]])
; CHECK-SVE-MAXBW-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE-MAXBW:       scalar.ph:
;
entry:
  %cmp28.not = icmp ult i32 %N, 2
  %div27 = lshr i32 %N, 1
  %wide.trip.count = zext nneg i32 %div27 to i64
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
  %res.0.lcssa = phi i32 [ %add.2, %for.body ]
  ret i32 %res.0.lcssa

for.body:                                         ; preds = %for.body.preheader, %for.body
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %res = phi i32 [ 0, %entry ], [ %add.2, %for.body ]
  %a.ptr = getelementptr inbounds nuw i8, ptr %a, i64 %indvars.iv
  %b.ptr = getelementptr inbounds nuw i8, ptr %b, i64 %indvars.iv
  %c.ptr = getelementptr inbounds nuw i8, ptr %c, i64 %indvars.iv
  %a.val = load i8, ptr %a.ptr, align 1
  %b.val = load i8, ptr %b.ptr, align 1
  %c.val = load i8, ptr %c.ptr, align 1
  %a.ext = sext i8 %a.val to i32
  %b.ext = sext i8 %b.val to i32
  %c.ext = sext i8 %c.val to i32
  %mul.ab = mul nsw i32 %a.ext, %b.ext
  %add = add nsw i32 %res, %mul.ab
  %mul.ac = mul nsw i32 %a.ext, %c.ext
  %add.2 = add i32 %add, %mul.ac
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !loop !1
}

define i32 @chained_partial_reduce_sub_add(ptr %a, ptr %b, ptr %c, i32 %N) #0 {
; CHECK-NEON-LABEL: define i32 @chained_partial_reduce_sub_add(
; CHECK-NEON-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-NEON-NEXT:  entry:
; CHECK-NEON-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-NEON-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-NEON-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-NEON-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-NEON:       vector.ph:
; CHECK-NEON-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEON-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-NEON:       vector.body:
; CHECK-NEON-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[TMP1:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP2:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP3:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP4:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP1]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP4]], align 1
; CHECK-NEON-NEXT:    [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP2]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD1:%.*]] = load <16 x i8>, ptr [[TMP5]], align 1
; CHECK-NEON-NEXT:    [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP3]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEON-NEXT:    [[TMP7:%.*]] = sext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP8:%.*]] = sext <16 x i8> [[WIDE_LOAD1]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP9:%.*]] = sext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP10:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP8]]
; CHECK-NEON-NEXT:    [[TMP11:%.*]] = sub nsw <16 x i32> zeroinitializer, [[TMP10]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[VEC_PHI]], <16 x i32> [[TMP11]])
; CHECK-NEON-NEXT:    [[TMP12:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP9]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE3]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE]], <16 x i32> [[TMP12]])
; CHECK-NEON-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEON-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-NEON:       middle.block:
; CHECK-NEON-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PARTIAL_REDUCE3]])
; CHECK-NEON-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-NEON:       scalar.ph:
;
; CHECK-SVE-LABEL: define i32 @chained_partial_reduce_sub_add(
; CHECK-SVE-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-NEXT:  entry:
; CHECK-SVE-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-SVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE:       vector.ph:
; CHECK-SVE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-SVE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-SVE-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE:       vector.body:
; CHECK-SVE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP19:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-NEXT:    [[TMP13:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP14:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP15:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD2]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-NEXT:    [[TMP17:%.*]] = sub <vscale x 4 x i32> [[VEC_PHI]], [[TMP16]]
; CHECK-SVE-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP19]] = add <vscale x 4 x i32> [[TMP17]], [[TMP18]]
; CHECK-SVE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-SVE:       middle.block:
; CHECK-SVE-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP19]])
; CHECK-SVE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE:       scalar.ph:
;
; CHECK-SVE-MAXBW-LABEL: define i32 @chained_partial_reduce_sub_add(
; CHECK-SVE-MAXBW-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-MAXBW-NEXT:  entry:
; CHECK-SVE-MAXBW-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-MAXBW-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-MAXBW-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-SVE-MAXBW-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE-MAXBW:       vector.ph:
; CHECK-SVE-MAXBW-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-SVE-MAXBW-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-MAXBW-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-SVE-MAXBW-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE-MAXBW:       vector.body:
; CHECK-SVE-MAXBW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 8 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP13:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP14:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD1]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP15:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD2]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP17:%.*]] = sub nsw <vscale x 8 x i32> zeroinitializer, [[TMP16]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[VEC_PHI]], <vscale x 8 x i32> [[TMP17]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE3]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE]], <vscale x 8 x i32> [[TMP18]])
; CHECK-SVE-MAXBW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-SVE-MAXBW:       middle.block:
; CHECK-SVE-MAXBW-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> [[PARTIAL_REDUCE3]])
; CHECK-SVE-MAXBW-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE-MAXBW:       scalar.ph:
;
entry:
  %cmp28.not = icmp ult i32 %N, 2
  %div27 = lshr i32 %N, 1
  %wide.trip.count = zext nneg i32 %div27 to i64
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
  %res.0.lcssa = phi i32 [ %add, %for.body ]
  ret i32 %res.0.lcssa

for.body:                                         ; preds = %for.body.preheader, %for.body
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %res = phi i32 [ 0, %entry ], [ %add, %for.body ]

  %a.ptr = getelementptr inbounds nuw i8, ptr %a, i64 %indvars.iv
  %b.ptr = getelementptr inbounds nuw i8, ptr %b, i64 %indvars.iv
  %c.ptr = getelementptr inbounds nuw i8, ptr %c, i64 %indvars.iv
  %a.val = load i8, ptr %a.ptr, align 1
  %b.val = load i8, ptr %b.ptr, align 1
  %c.val = load i8, ptr %c.ptr, align 1

  %a.ext = sext i8 %a.val to i32
  %b.ext = sext i8 %b.val to i32
  %c.ext = sext i8 %c.val to i32
  %mul.ab = mul nsw i32 %a.ext, %b.ext
  %sub = sub nsw i32 %res, %mul.ab
  %mul.ac = mul nsw i32 %a.ext, %c.ext
  %add = add i32 %sub, %mul.ac
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !loop !1
}

define i32 @chained_partial_reduce_sub_sub(ptr %a, ptr %b, ptr %c, i32 %N) #0 {
; CHECK-NEON-LABEL: define i32 @chained_partial_reduce_sub_sub(
; CHECK-NEON-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-NEON-NEXT:  entry:
; CHECK-NEON-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-NEON-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-NEON-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-NEON-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-NEON:       vector.ph:
; CHECK-NEON-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEON-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-NEON:       vector.body:
; CHECK-NEON-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[TMP1:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP2:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP3:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP4:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP1]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP4]], align 1
; CHECK-NEON-NEXT:    [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP2]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD1:%.*]] = load <16 x i8>, ptr [[TMP5]], align 1
; CHECK-NEON-NEXT:    [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP3]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEON-NEXT:    [[TMP7:%.*]] = sext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP8:%.*]] = sext <16 x i8> [[WIDE_LOAD1]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP9:%.*]] = sext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP10:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP8]]
; CHECK-NEON-NEXT:    [[TMP11:%.*]] = sub nsw <16 x i32> zeroinitializer, [[TMP10]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[VEC_PHI]], <16 x i32> [[TMP11]])
; CHECK-NEON-NEXT:    [[TMP12:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP9]]
; CHECK-NEON-NEXT:    [[TMP13:%.*]] = sub <16 x i32> zeroinitializer, [[TMP12]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE3]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE]], <16 x i32> [[TMP13]])
; CHECK-NEON-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEON-NEXT:    [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK-NEON:       middle.block:
; CHECK-NEON-NEXT:    [[TMP15:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PARTIAL_REDUCE3]])
; CHECK-NEON-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-NEON:       scalar.ph:
;
; CHECK-SVE-LABEL: define i32 @chained_partial_reduce_sub_sub(
; CHECK-SVE-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-NEXT:  entry:
; CHECK-SVE-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-SVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE:       vector.ph:
; CHECK-SVE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-SVE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-SVE-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE:       vector.body:
; CHECK-SVE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP19:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-NEXT:    [[TMP13:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP14:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP15:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD2]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-NEXT:    [[TMP17:%.*]] = sub <vscale x 4 x i32> [[VEC_PHI]], [[TMP16]]
; CHECK-SVE-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP19]] = sub <vscale x 4 x i32> [[TMP17]], [[TMP18]]
; CHECK-SVE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK-SVE:       middle.block:
; CHECK-SVE-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP19]])
; CHECK-SVE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE:       scalar.ph:
;
; CHECK-SVE-MAXBW-LABEL: define i32 @chained_partial_reduce_sub_sub(
; CHECK-SVE-MAXBW-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-MAXBW-NEXT:  entry:
; CHECK-SVE-MAXBW-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-MAXBW-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-MAXBW-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-SVE-MAXBW-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE-MAXBW:       vector.ph:
; CHECK-SVE-MAXBW-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-SVE-MAXBW-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-MAXBW-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-SVE-MAXBW-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE-MAXBW:       vector.body:
; CHECK-SVE-MAXBW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE3:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 8 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP13:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP14:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD1]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP15:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD2]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP17:%.*]] = sub nsw <vscale x 8 x i32> zeroinitializer, [[TMP16]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[VEC_PHI]], <vscale x 8 x i32> [[TMP17]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP19:%.*]] = sub <vscale x 8 x i32> zeroinitializer, [[TMP18]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE3]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE]], <vscale x 8 x i32> [[TMP19]])
; CHECK-SVE-MAXBW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK-SVE-MAXBW:       middle.block:
; CHECK-SVE-MAXBW-NEXT:    [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> [[PARTIAL_REDUCE3]])
; CHECK-SVE-MAXBW-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE-MAXBW:       scalar.ph:
;
entry:
  %cmp28.not = icmp ult i32 %N, 2
  %div27 = lshr i32 %N, 1
  %wide.trip.count = zext nneg i32 %div27 to i64
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
  %res.0.lcssa = phi i32 [ %sub.2, %for.body ]
  ret i32 %res.0.lcssa

for.body:                                         ; preds = %for.body.preheader, %for.body
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %res = phi i32 [ 0, %entry ], [ %sub.2, %for.body ]

  %a.ptr = getelementptr inbounds nuw i8, ptr %a, i64 %indvars.iv
  %b.ptr = getelementptr inbounds nuw i8, ptr %b, i64 %indvars.iv
  %c.ptr = getelementptr inbounds nuw i8, ptr %c, i64 %indvars.iv
  %a.val = load i8, ptr %a.ptr, align 1
  %b.val = load i8, ptr %b.ptr, align 1
  %c.val = load i8, ptr %c.ptr, align 1

  %a.ext = sext i8 %a.val to i32
  %b.ext = sext i8 %b.val to i32
  %c.ext = sext i8 %c.val to i32

  %mul.ab = mul nsw i32 %a.ext, %b.ext
  %sub = sub nsw i32 %res, %mul.ab
  %mul.ac = mul nsw i32 %a.ext, %c.ext
  %sub.2 = sub i32 %sub, %mul.ac
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !loop !1
}

define i32 @chained_partial_reduce_add_add_add(ptr %a, ptr %b, ptr %c, i32 %N) #0 {
; CHECK-NEON-LABEL: define i32 @chained_partial_reduce_add_add_add(
; CHECK-NEON-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-NEON-NEXT:  entry:
; CHECK-NEON-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-NEON-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-NEON-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-NEON-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-NEON:       vector.ph:
; CHECK-NEON-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEON-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-NEON:       vector.body:
; CHECK-NEON-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE4:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[TMP1:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP2:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP3:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP4:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP1]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP4]], align 1
; CHECK-NEON-NEXT:    [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP2]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD1:%.*]] = load <16 x i8>, ptr [[TMP5]], align 1
; CHECK-NEON-NEXT:    [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP3]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEON-NEXT:    [[TMP7:%.*]] = sext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP8:%.*]] = sext <16 x i8> [[WIDE_LOAD1]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP9:%.*]] = sext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP10:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP8]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[VEC_PHI]], <16 x i32> [[TMP10]])
; CHECK-NEON-NEXT:    [[TMP11:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP9]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE3:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE]], <16 x i32> [[TMP11]])
; CHECK-NEON-NEXT:    [[TMP12:%.*]] = mul nsw <16 x i32> [[TMP8]], [[TMP9]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE4]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE3]], <16 x i32> [[TMP12]])
; CHECK-NEON-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEON-NEXT:    [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK-NEON:       middle.block:
; CHECK-NEON-NEXT:    [[TMP14:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PARTIAL_REDUCE4]])
; CHECK-NEON-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-NEON:       scalar.ph:
;
; CHECK-SVE-LABEL: define i32 @chained_partial_reduce_add_add_add(
; CHECK-SVE-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-NEXT:  entry:
; CHECK-SVE-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-SVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE:       vector.ph:
; CHECK-SVE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-SVE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-SVE-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE:       vector.body:
; CHECK-SVE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP21:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-NEXT:    [[TMP13:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP14:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP15:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD2]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-NEXT:    [[TMP17:%.*]] = add <vscale x 4 x i32> [[VEC_PHI]], [[TMP16]]
; CHECK-SVE-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP19:%.*]] = add <vscale x 4 x i32> [[TMP17]], [[TMP18]]
; CHECK-SVE-NEXT:    [[TMP20:%.*]] = mul nsw <vscale x 4 x i32> [[TMP14]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP21]] = add <vscale x 4 x i32> [[TMP19]], [[TMP20]]
; CHECK-SVE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-NEXT:    [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK-SVE:       middle.block:
; CHECK-SVE-NEXT:    [[TMP23:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP21]])
; CHECK-SVE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE:       scalar.ph:
;
; CHECK-SVE-MAXBW-LABEL: define i32 @chained_partial_reduce_add_add_add(
; CHECK-SVE-MAXBW-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-MAXBW-NEXT:  entry:
; CHECK-SVE-MAXBW-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-MAXBW-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-MAXBW-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-SVE-MAXBW-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE-MAXBW:       vector.ph:
; CHECK-SVE-MAXBW-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-SVE-MAXBW-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-MAXBW-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-SVE-MAXBW-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE-MAXBW:       vector.body:
; CHECK-SVE-MAXBW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE4:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 8 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP13:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP14:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD1]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP15:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD2]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[VEC_PHI]], <vscale x 8 x i32> [[TMP16]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP17:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE3:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE]], <vscale x 8 x i32> [[TMP17]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 8 x i32> [[TMP14]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE4]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE3]], <vscale x 8 x i32> [[TMP18]])
; CHECK-SVE-MAXBW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP19:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK-SVE-MAXBW:       middle.block:
; CHECK-SVE-MAXBW-NEXT:    [[TMP20:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> [[PARTIAL_REDUCE4]])
; CHECK-SVE-MAXBW-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE-MAXBW:       scalar.ph:
;
entry:
  %cmp28.not = icmp ult i32 %N, 2
  %div27 = lshr i32 %N, 1
  %wide.trip.count = zext nneg i32 %div27 to i64
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
  %res.0.lcssa = phi i32 [ %sub.2, %for.body ]
  ret i32 %res.0.lcssa

for.body:                                         ; preds = %for.body.preheader, %for.body
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %res = phi i32 [ 0, %entry ], [ %sub.2, %for.body ]

  %a.ptr = getelementptr inbounds nuw i8, ptr %a, i64 %indvars.iv
  %b.ptr = getelementptr inbounds nuw i8, ptr %b, i64 %indvars.iv
  %c.ptr = getelementptr inbounds nuw i8, ptr %c, i64 %indvars.iv
  %a.val = load i8, ptr %a.ptr, align 1
  %b.val = load i8, ptr %b.ptr, align 1
  %c.val = load i8, ptr %c.ptr, align 1

  %a.ext = sext i8 %a.val to i32
  %b.ext = sext i8 %b.val to i32
  %c.ext = sext i8 %c.val to i32

  %mul.ab = mul nsw i32 %a.ext, %b.ext
  %sub = add nsw i32 %res, %mul.ab
  %mul.ac = mul nsw i32 %a.ext, %c.ext
  %add = add nsw i32 %sub, %mul.ac
  %mul.bc = mul nsw i32 %b.ext, %c.ext
  %sub.2 = add i32 %add, %mul.bc
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !loop !1
}

define i32 @chained_partial_reduce_sub_add_sub(ptr %a, ptr %b, ptr %c, i32 %N) #0 {
; CHECK-NEON-LABEL: define i32 @chained_partial_reduce_sub_add_sub(
; CHECK-NEON-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-NEON-NEXT:  entry:
; CHECK-NEON-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-NEON-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-NEON-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-NEON-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-NEON:       vector.ph:
; CHECK-NEON-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 16
; CHECK-NEON-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-NEON-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-NEON:       vector.body:
; CHECK-NEON-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE4:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEON-NEXT:    [[TMP1:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP2:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP3:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-NEON-NEXT:    [[TMP4:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP1]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP4]], align 1
; CHECK-NEON-NEXT:    [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP2]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD1:%.*]] = load <16 x i8>, ptr [[TMP5]], align 1
; CHECK-NEON-NEXT:    [[TMP6:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP3]], i32 0
; CHECK-NEON-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEON-NEXT:    [[TMP7:%.*]] = sext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP8:%.*]] = sext <16 x i8> [[WIDE_LOAD1]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP9:%.*]] = sext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEON-NEXT:    [[TMP10:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP8]]
; CHECK-NEON-NEXT:    [[TMP11:%.*]] = sub nsw <16 x i32> zeroinitializer, [[TMP10]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[VEC_PHI]], <16 x i32> [[TMP11]])
; CHECK-NEON-NEXT:    [[TMP12:%.*]] = mul nsw <16 x i32> [[TMP7]], [[TMP9]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE3:%.*]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE]], <16 x i32> [[TMP12]])
; CHECK-NEON-NEXT:    [[TMP14:%.*]] = mul nsw <16 x i32> [[TMP8]], [[TMP9]]
; CHECK-NEON-NEXT:    [[TMP15:%.*]] = sub <16 x i32> zeroinitializer, [[TMP14]]
; CHECK-NEON-NEXT:    [[PARTIAL_REDUCE4]] = call <4 x i32> @llvm.experimental.vector.partial.reduce.add.v4i32.v16i32(<4 x i32> [[PARTIAL_REDUCE3]], <16 x i32> [[TMP15]])
; CHECK-NEON-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEON-NEXT:    [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK-NEON:       middle.block:
; CHECK-NEON-NEXT:    [[TMP17:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[PARTIAL_REDUCE4]])
; CHECK-NEON-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-NEON-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-NEON:       scalar.ph:
;
; CHECK-SVE-LABEL: define i32 @chained_partial_reduce_sub_add_sub(
; CHECK-SVE-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-NEXT:  entry:
; CHECK-SVE-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-SVE-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE:       vector.ph:
; CHECK-SVE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-SVE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-SVE-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE:       vector.body:
; CHECK-SVE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP21:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 4 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-NEXT:    [[TMP13:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP14:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD1]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP15:%.*]] = sext <vscale x 4 x i8> [[WIDE_LOAD2]] to <vscale x 4 x i32>
; CHECK-SVE-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-NEXT:    [[TMP17:%.*]] = sub <vscale x 4 x i32> [[VEC_PHI]], [[TMP16]]
; CHECK-SVE-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 4 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP19:%.*]] = add <vscale x 4 x i32> [[TMP17]], [[TMP18]]
; CHECK-SVE-NEXT:    [[TMP20:%.*]] = mul nsw <vscale x 4 x i32> [[TMP14]], [[TMP15]]
; CHECK-SVE-NEXT:    [[TMP21]] = sub <vscale x 4 x i32> [[TMP19]], [[TMP20]]
; CHECK-SVE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-NEXT:    [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK-SVE:       middle.block:
; CHECK-SVE-NEXT:    [[TMP23:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32(<vscale x 4 x i32> [[TMP21]])
; CHECK-SVE-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE:       scalar.ph:
;
; CHECK-SVE-MAXBW-LABEL: define i32 @chained_partial_reduce_sub_add_sub(
; CHECK-SVE-MAXBW-SAME: ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]], i32 [[N:%.*]]) #[[ATTR0]] {
; CHECK-SVE-MAXBW-NEXT:  entry:
; CHECK-SVE-MAXBW-NEXT:    [[CMP28_NOT:%.*]] = icmp ult i32 [[N]], 2
; CHECK-SVE-MAXBW-NEXT:    [[DIV27:%.*]] = lshr i32 [[N]], 1
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[DIV27]] to i64
; CHECK-SVE-MAXBW-NEXT:    [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-SVE-MAXBW-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], [[TMP1]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-SVE-MAXBW:       vector.ph:
; CHECK-SVE-MAXBW-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-SVE-MAXBW-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], [[TMP3]]
; CHECK-SVE-MAXBW-NEXT:    [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-SVE-MAXBW-NEXT:    [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-SVE-MAXBW-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK-SVE-MAXBW:       vector.body:
; CHECK-SVE-MAXBW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[VEC_PHI:%.*]] = phi <vscale x 2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[PARTIAL_REDUCE4:%.*]], [[VECTOR_BODY]] ]
; CHECK-SVE-MAXBW-NEXT:    [[TMP7:%.*]] = getelementptr inbounds nuw i8, ptr [[A]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds nuw i8, ptr [[B]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP9:%.*]] = getelementptr inbounds nuw i8, ptr [[C]], i64 [[INDEX]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP10:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP7]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 8 x i8>, ptr [[TMP10]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP11:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD1:%.*]] = load <vscale x 8 x i8>, ptr [[TMP11]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP12:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP9]], i32 0
; CHECK-SVE-MAXBW-NEXT:    [[WIDE_LOAD2:%.*]] = load <vscale x 8 x i8>, ptr [[TMP12]], align 1
; CHECK-SVE-MAXBW-NEXT:    [[TMP13:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP14:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD1]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP15:%.*]] = sext <vscale x 8 x i8> [[WIDE_LOAD2]] to <vscale x 8 x i32>
; CHECK-SVE-MAXBW-NEXT:    [[TMP16:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP14]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP17:%.*]] = sub nsw <vscale x 8 x i32> zeroinitializer, [[TMP16]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[VEC_PHI]], <vscale x 8 x i32> [[TMP17]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP18:%.*]] = mul nsw <vscale x 8 x i32> [[TMP13]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE3:%.*]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE]], <vscale x 8 x i32> [[TMP18]])
; CHECK-SVE-MAXBW-NEXT:    [[TMP19:%.*]] = mul nsw <vscale x 8 x i32> [[TMP14]], [[TMP15]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP20:%.*]] = sub <vscale x 8 x i32> zeroinitializer, [[TMP19]]
; CHECK-SVE-MAXBW-NEXT:    [[PARTIAL_REDUCE4]] = call <vscale x 2 x i32> @llvm.experimental.vector.partial.reduce.add.nxv2i32.nxv8i32(<vscale x 2 x i32> [[PARTIAL_REDUCE3]], <vscale x 8 x i32> [[TMP20]])
; CHECK-SVE-MAXBW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-SVE-MAXBW-NEXT:    [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK-SVE-MAXBW:       middle.block:
; CHECK-SVE-MAXBW-NEXT:    [[TMP23:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> [[PARTIAL_REDUCE4]])
; CHECK-SVE-MAXBW-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]]
; CHECK-SVE-MAXBW-NEXT:    br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK-SVE-MAXBW:       scalar.ph:
;
entry:
  %cmp28.not = icmp ult i32 %N, 2
  %div27 = lshr i32 %N, 1
  %wide.trip.count = zext nneg i32 %div27 to i64
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.cond.cleanup.loopexit, %entry
  %res.0.lcssa = phi i32 [ %sub.2, %for.body ]
  ret i32 %res.0.lcssa

for.body:                                         ; preds = %for.body.preheader, %for.body
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %res = phi i32 [ 0, %entry ], [ %sub.2, %for.body ]

  %a.ptr = getelementptr inbounds nuw i8, ptr %a, i64 %indvars.iv
  %b.ptr = getelementptr inbounds nuw i8, ptr %b, i64 %indvars.iv
  %c.ptr = getelementptr inbounds nuw i8, ptr %c, i64 %indvars.iv
  %a.val = load i8, ptr %a.ptr, align 1
  %b.val = load i8, ptr %b.ptr, align 1
  %c.val = load i8, ptr %c.ptr, align 1

  %a.ext = sext i8 %a.val to i32
  %b.ext = sext i8 %b.val to i32
  %c.ext = sext i8 %c.val to i32

  %mul.ab = mul nsw i32 %a.ext, %b.ext
  %sub = sub nsw i32 %res, %mul.ab
  %mul.ac = mul nsw i32 %a.ext, %c.ext
  %add = add nsw i32 %sub, %mul.ac
  %mul.bc = mul nsw i32 %b.ext, %c.ext
  %sub.2 = sub i32 %add, %mul.bc
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !loop !1
}

attributes #0 = { vscale_range(1,16) }


!0 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
!1 = distinct !{!0}