llvm/test/Transforms/LoopVectorize/AArch64/partial-reduce-no-dotprod.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --filter-out-after "^scalar.ph:" --version 5
; RUN: opt -passes=loop-vectorize -enable-epilogue-vectorization=false -mattr=+neon -S < %s | FileCheck %s

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

define i32 @not_dotp(ptr %a, ptr %b) {
; CHECK-LABEL: define i32 @not_dotp(
; CHECK-SAME: ptr [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <16 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP13:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI1:%.*]] = phi <16 x i32> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP14:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr i8, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i8, ptr [[TMP1]], i64 16
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, ptr [[TMP1]], align 1
; CHECK-NEXT:    [[WIDE_LOAD2:%.*]] = load <16 x i8>, ptr [[TMP3]], align 1
; CHECK-NEXT:    [[TMP4:%.*]] = zext <16 x i8> [[WIDE_LOAD]] to <16 x i32>
; CHECK-NEXT:    [[TMP5:%.*]] = zext <16 x i8> [[WIDE_LOAD2]] to <16 x i32>
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr i8, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr i8, ptr [[TMP6]], i64 16
; CHECK-NEXT:    [[WIDE_LOAD3:%.*]] = load <16 x i8>, ptr [[TMP6]], align 1
; CHECK-NEXT:    [[WIDE_LOAD4:%.*]] = load <16 x i8>, ptr [[TMP8]], align 1
; CHECK-NEXT:    [[TMP9:%.*]] = zext <16 x i8> [[WIDE_LOAD3]] to <16 x i32>
; CHECK-NEXT:    [[TMP10:%.*]] = zext <16 x i8> [[WIDE_LOAD4]] to <16 x i32>
; CHECK-NEXT:    [[TMP11:%.*]] = mul <16 x i32> [[TMP9]], [[TMP4]]
; CHECK-NEXT:    [[TMP12:%.*]] = mul <16 x i32> [[TMP10]], [[TMP5]]
; CHECK-NEXT:    [[TMP13]] = add <16 x i32> [[TMP11]], [[VEC_PHI]]
; CHECK-NEXT:    [[TMP14]] = add <16 x i32> [[TMP12]], [[VEC_PHI1]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 32
; CHECK-NEXT:    [[TMP15:%.*]] = icmp eq i64 [[INDEX_NEXT]], 992
; CHECK-NEXT:    br i1 [[TMP15]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[BIN_RDX:%.*]] = add <16 x i32> [[TMP14]], [[TMP13]]
; CHECK-NEXT:    [[TMP16:%.*]] = call i32 @llvm.vector.reduce.add.v16i32(<16 x i32> [[BIN_RDX]])
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
;
entry:
  br label %for.body

for.body:                                         ; preds = %for.body, %entry
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
  %accum = phi i32 [ 0, %entry ], [ %add, %for.body ]
  %gep.a = getelementptr i8, ptr %a, i64 %iv
  %load.a = load i8, ptr %gep.a, align 1
  %ext.a = zext i8 %load.a to i32
  %gep.b = getelementptr i8, ptr %b, i64 %iv
  %load.b = load i8, ptr %gep.b, align 1
  %ext.b = zext i8 %load.b to i32
  %mul = mul i32 %ext.b, %ext.a
  %add = add i32 %mul, %accum
  %iv.next = add i64 %iv, 1
  %exitcond.not = icmp eq i64 %iv.next, 1000
  br i1 %exitcond.not, label %for.exit, label %for.body

for.exit:                        ; preds = %for.body
  ret i32 %add
}

; Test to ensure that we don't crash when evaluating an extend from a type
; that is not a factor of the target type.
define i40 @partial_reduce_not_known_factor(i32 %a, i32 %b, i16 %N) {
; CHECK-LABEL: define i40 @partial_reduce_not_known_factor(
; CHECK-SAME: i32 [[A:%.*]], i32 [[B:%.*]], i16 [[N:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[SMAX:%.*]] = call i16 @llvm.smax.i16(i16 [[N]], i16 0)
; CHECK-NEXT:    [[TMP0:%.*]] = zext nneg i16 [[SMAX]] to i32
; CHECK-NEXT:    [[TMP1:%.*]] = add nuw nsw i32 [[TMP0]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP1]], 4
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i32 [[TMP1]], 4
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i32 [[TMP1]], [[N_MOD_VF]]
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[B]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <2 x i32> poison, i32 [[A]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT1]], <2 x i32> poison, <2 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = trunc i32 [[N_VEC]] to i16
; CHECK-NEXT:    [[TMP3:%.*]] = sext <2 x i32> [[BROADCAST_SPLAT2]] to <2 x i40>
; CHECK-NEXT:    [[TMP4:%.*]] = sext <2 x i32> [[BROADCAST_SPLAT]] to <2 x i40>
; CHECK-NEXT:    [[TMP5:%.*]] = or <2 x i40> [[TMP4]], [[TMP3]]
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <2 x i40> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP6:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI3:%.*]] = phi <2 x i40> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP8:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP6]] = or <2 x i40> [[VEC_PHI]], [[TMP5]]
; CHECK-NEXT:    [[TMP8]] = or <2 x i40> [[VEC_PHI3]], [[TMP5]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[BIN_RDX:%.*]] = or <2 x i40> [[TMP8]], [[TMP6]]
; CHECK-NEXT:    [[TMP9:%.*]] = call i40 @llvm.vector.reduce.or.v2i40(<2 x i40> [[BIN_RDX]])
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[TMP1]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], [[EXIT:label %.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
;
entry:
  br label %for.body

for.body:
  %red = phi i40 [ 0, %entry ], [ %1, %for.body ]
  %iv = phi i16 [ 0, %entry ], [ %iv.next, %for.body ]
  %resize = sext i32 %a to i40
  %resize4 = sext i32 %b to i40
  %0 = or i40 %resize4, %resize
  %1 = or i40 %red, %0
  %iv.next = add i16 %iv, 1
  %cmp = icmp slt i16 %iv, %N
  br i1 %cmp, label %for.body, label %exit

exit:
  %result.lcssa = phi i40 [ %1, %for.body ]
  ret i40 %result.lcssa
}