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clang-p2996/llvm/test/Transforms/LoopVectorize/reduction-inloop-uf4.ll
Florian Hahn 23c2f2e6b2 [LV] Mark increment of main vector loop induction variable as NUW. 
This patch marks the induction increment of the main induction variable
of the vector loop as NUW when not folding the tail.

If the tail is not folded, we know that End - Start >= Step (either
statically or through the minimum iteration checks). We also know that both
Start % Step == 0 and End % Step == 0. We exit the vector loop if %IV +
%Step == %End. Hence we must exit the loop before %IV + %Step unsigned
overflows and we can mark the induction increment as NUW.

This should make SCEV return more precise bounds for the created vector
loops, used by later optimizations, like late unrolling.

At the moment quite a few tests still need to be updated, but before
doing so I'd like to get initial feedback to make sure I am not missing
anything.

Note that this could probably be further improved by using information
from the original IV.

Attempt of modeling of the assumption in Alive2:
https://alive2.llvm.org/ce/z/H_DL_g

Part of a set of fixes required for PR50412.

Reviewed By: mkazantsev

Differential Revision: https://reviews.llvm.org/D103255
2021-06-07 10:47:52 +01:00

303 lines
20 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -loop-vectorize -force-vector-interleave=4 -force-vector-width=4 -prefer-inloop-reductions -dce -instcombine -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
define i32 @reduction_sum_single(i32* noalias nocapture %A) {
; CHECK-LABEL: @reduction_sum_single(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], 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 i32 [ 0, [[VECTOR_PH]] ], [ [[TMP9:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP11:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI2:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP13:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI3:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP15:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[TMP0]] to <4 x i32>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP1]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i64 4
; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>*
; CHECK-NEXT: [[WIDE_LOAD4:%.*]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i64 8
; CHECK-NEXT: [[TMP5:%.*]] = bitcast i32* [[TMP4]] to <4 x i32>*
; CHECK-NEXT: [[WIDE_LOAD5:%.*]] = load <4 x i32>, <4 x i32>* [[TMP5]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i64 12
; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP6]] to <4 x i32>*
; CHECK-NEXT: [[WIDE_LOAD6:%.*]] = load <4 x i32>, <4 x i32>* [[TMP7]], align 4
; CHECK-NEXT: [[TMP8:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[WIDE_LOAD]])
; CHECK-NEXT: [[TMP9]] = add i32 [[TMP8]], [[VEC_PHI]]
; CHECK-NEXT: [[TMP10:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[WIDE_LOAD4]])
; CHECK-NEXT: [[TMP11]] = add i32 [[TMP10]], [[VEC_PHI1]]
; CHECK-NEXT: [[TMP12:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[WIDE_LOAD5]])
; CHECK-NEXT: [[TMP13]] = add i32 [[TMP12]], [[VEC_PHI2]]
; CHECK-NEXT: [[TMP14:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[WIDE_LOAD6]])
; CHECK-NEXT: [[TMP15]] = add i32 [[TMP14]], [[VEC_PHI3]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], 256
; CHECK-NEXT: br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
; CHECK: middle.block:
; CHECK-NEXT: [[BIN_RDX:%.*]] = add i32 [[TMP11]], [[TMP9]]
; CHECK-NEXT: [[BIN_RDX7:%.*]] = add i32 [[TMP13]], [[BIN_RDX]]
; CHECK-NEXT: [[BIN_RDX8:%.*]] = add i32 [[TMP15]], [[BIN_RDX7]]
; CHECK-NEXT: br i1 true, label [[DOT_CRIT_EDGE:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: br label [[DOTLR_PH:%.*]]
; CHECK: .lr.ph:
; CHECK-NEXT: br i1 undef, label [[DOT_CRIT_EDGE]], label [[DOTLR_PH]], [[LOOP2:!llvm.loop !.*]]
; CHECK: ._crit_edge:
; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ undef, [[DOTLR_PH]] ], [ [[BIN_RDX8]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: ret i32 [[SUM_0_LCSSA]]
;
entry:
br label %.lr.ph
.lr.ph: ; preds = %entry, %.lr.ph
%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %entry ]
%sum.02 = phi i32 [ %l7, %.lr.ph ], [ 0, %entry ]
%l2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%l3 = load i32, i32* %l2, align 4
%l7 = add i32 %sum.02, %l3
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 256
br i1 %exitcond, label %._crit_edge, label %.lr.ph
._crit_edge: ; preds = %.lr.ph
%sum.0.lcssa = phi i32 [ %l7, %.lr.ph ]
ret i32 %sum.0.lcssa
}
define i32 @predicated(i32* noalias nocapture %A) {
; CHECK-LABEL: @predicated(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], 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:%.*]], [[PRED_LOAD_CONTINUE36:%.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_LOAD_CONTINUE36]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP101:%.*]], [[PRED_LOAD_CONTINUE36]] ]
; CHECK-NEXT: [[VEC_PHI4:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP104:%.*]], [[PRED_LOAD_CONTINUE36]] ]
; CHECK-NEXT: [[VEC_PHI5:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP107:%.*]], [[PRED_LOAD_CONTINUE36]] ]
; CHECK-NEXT: [[VEC_PHI6:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP110:%.*]], [[PRED_LOAD_CONTINUE36]] ]
; CHECK-NEXT: [[STEP_ADD:%.*]] = add <4 x i64> [[VEC_IND]], <i64 4, i64 4, i64 4, i64 4>
; CHECK-NEXT: [[STEP_ADD1:%.*]] = add <4 x i64> [[VEC_IND]], <i64 8, i64 8, i64 8, i64 8>
; CHECK-NEXT: [[STEP_ADD2:%.*]] = add <4 x i64> [[VEC_IND]], <i64 12, i64 12, i64 12, i64 12>
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult <4 x i64> [[VEC_IND]], <i64 257, i64 257, i64 257, i64 257>
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult <4 x i64> [[STEP_ADD]], <i64 257, i64 257, i64 257, i64 257>
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult <4 x i64> [[STEP_ADD1]], <i64 257, i64 257, i64 257, i64 257>
; CHECK-NEXT: [[TMP3:%.*]] = icmp ult <4 x i64> [[STEP_ADD2]], <i64 257, i64 257, i64 257, i64 257>
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <4 x i1> [[TMP0]], i32 0
; CHECK-NEXT: br i1 [[TMP4]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]]
; CHECK: pred.load.if:
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[TMP5]], align 4
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x i32> poison, i32 [[TMP6]], i32 0
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]]
; CHECK: pred.load.continue:
; CHECK-NEXT: [[TMP8:%.*]] = phi <4 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP7]], [[PRED_LOAD_IF]] ]
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <4 x i1> [[TMP0]], i32 1
; CHECK-NEXT: br i1 [[TMP9]], label [[PRED_LOAD_IF7:%.*]], label [[PRED_LOAD_CONTINUE8:%.*]]
; CHECK: pred.load.if7:
; CHECK-NEXT: [[TMP10:%.*]] = or i64 [[INDEX]], 1
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP10]]
; CHECK-NEXT: [[TMP12:%.*]] = load i32, i32* [[TMP11]], align 4
; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x i32> [[TMP8]], i32 [[TMP12]], i32 1
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE8]]
; CHECK: pred.load.continue8:
; CHECK-NEXT: [[TMP14:%.*]] = phi <4 x i32> [ [[TMP8]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP13]], [[PRED_LOAD_IF7]] ]
; CHECK-NEXT: [[TMP15:%.*]] = extractelement <4 x i1> [[TMP0]], i32 2
; CHECK-NEXT: br i1 [[TMP15]], label [[PRED_LOAD_IF9:%.*]], label [[PRED_LOAD_CONTINUE10:%.*]]
; CHECK: pred.load.if9:
; CHECK-NEXT: [[TMP16:%.*]] = or i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP16]]
; CHECK-NEXT: [[TMP18:%.*]] = load i32, i32* [[TMP17]], align 4
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x i32> [[TMP14]], i32 [[TMP18]], i32 2
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE10]]
; CHECK: pred.load.continue10:
; CHECK-NEXT: [[TMP20:%.*]] = phi <4 x i32> [ [[TMP14]], [[PRED_LOAD_CONTINUE8]] ], [ [[TMP19]], [[PRED_LOAD_IF9]] ]
; CHECK-NEXT: [[TMP21:%.*]] = extractelement <4 x i1> [[TMP0]], i32 3
; CHECK-NEXT: br i1 [[TMP21]], label [[PRED_LOAD_IF11:%.*]], label [[PRED_LOAD_CONTINUE12:%.*]]
; CHECK: pred.load.if11:
; CHECK-NEXT: [[TMP22:%.*]] = or i64 [[INDEX]], 3
; CHECK-NEXT: [[TMP23:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP22]]
; CHECK-NEXT: [[TMP24:%.*]] = load i32, i32* [[TMP23]], align 4
; CHECK-NEXT: [[TMP25:%.*]] = insertelement <4 x i32> [[TMP20]], i32 [[TMP24]], i32 3
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE12]]
; CHECK: pred.load.continue12:
; CHECK-NEXT: [[TMP26:%.*]] = phi <4 x i32> [ [[TMP20]], [[PRED_LOAD_CONTINUE10]] ], [ [[TMP25]], [[PRED_LOAD_IF11]] ]
; CHECK-NEXT: [[TMP27:%.*]] = extractelement <4 x i1> [[TMP1]], i32 0
; CHECK-NEXT: br i1 [[TMP27]], label [[PRED_LOAD_IF13:%.*]], label [[PRED_LOAD_CONTINUE14:%.*]]
; CHECK: pred.load.if13:
; CHECK-NEXT: [[TMP28:%.*]] = or i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP29:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP28]]
; CHECK-NEXT: [[TMP30:%.*]] = load i32, i32* [[TMP29]], align 4
; CHECK-NEXT: [[TMP31:%.*]] = insertelement <4 x i32> poison, i32 [[TMP30]], i32 0
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE14]]
; CHECK: pred.load.continue14:
; CHECK-NEXT: [[TMP32:%.*]] = phi <4 x i32> [ poison, [[PRED_LOAD_CONTINUE12]] ], [ [[TMP31]], [[PRED_LOAD_IF13]] ]
; CHECK-NEXT: [[TMP33:%.*]] = extractelement <4 x i1> [[TMP1]], i32 1
; CHECK-NEXT: br i1 [[TMP33]], label [[PRED_LOAD_IF15:%.*]], label [[PRED_LOAD_CONTINUE16:%.*]]
; CHECK: pred.load.if15:
; CHECK-NEXT: [[TMP34:%.*]] = or i64 [[INDEX]], 5
; CHECK-NEXT: [[TMP35:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP34]]
; CHECK-NEXT: [[TMP36:%.*]] = load i32, i32* [[TMP35]], align 4
; CHECK-NEXT: [[TMP37:%.*]] = insertelement <4 x i32> [[TMP32]], i32 [[TMP36]], i32 1
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE16]]
; CHECK: pred.load.continue16:
; CHECK-NEXT: [[TMP38:%.*]] = phi <4 x i32> [ [[TMP32]], [[PRED_LOAD_CONTINUE14]] ], [ [[TMP37]], [[PRED_LOAD_IF15]] ]
; CHECK-NEXT: [[TMP39:%.*]] = extractelement <4 x i1> [[TMP1]], i32 2
; CHECK-NEXT: br i1 [[TMP39]], label [[PRED_LOAD_IF17:%.*]], label [[PRED_LOAD_CONTINUE18:%.*]]
; CHECK: pred.load.if17:
; CHECK-NEXT: [[TMP40:%.*]] = or i64 [[INDEX]], 6
; CHECK-NEXT: [[TMP41:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP40]]
; CHECK-NEXT: [[TMP42:%.*]] = load i32, i32* [[TMP41]], align 4
; CHECK-NEXT: [[TMP43:%.*]] = insertelement <4 x i32> [[TMP38]], i32 [[TMP42]], i32 2
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE18]]
; CHECK: pred.load.continue18:
; CHECK-NEXT: [[TMP44:%.*]] = phi <4 x i32> [ [[TMP38]], [[PRED_LOAD_CONTINUE16]] ], [ [[TMP43]], [[PRED_LOAD_IF17]] ]
; CHECK-NEXT: [[TMP45:%.*]] = extractelement <4 x i1> [[TMP1]], i32 3
; CHECK-NEXT: br i1 [[TMP45]], label [[PRED_LOAD_IF19:%.*]], label [[PRED_LOAD_CONTINUE20:%.*]]
; CHECK: pred.load.if19:
; CHECK-NEXT: [[TMP46:%.*]] = or i64 [[INDEX]], 7
; CHECK-NEXT: [[TMP47:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP46]]
; CHECK-NEXT: [[TMP48:%.*]] = load i32, i32* [[TMP47]], align 4
; CHECK-NEXT: [[TMP49:%.*]] = insertelement <4 x i32> [[TMP44]], i32 [[TMP48]], i32 3
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE20]]
; CHECK: pred.load.continue20:
; CHECK-NEXT: [[TMP50:%.*]] = phi <4 x i32> [ [[TMP44]], [[PRED_LOAD_CONTINUE18]] ], [ [[TMP49]], [[PRED_LOAD_IF19]] ]
; CHECK-NEXT: [[TMP51:%.*]] = extractelement <4 x i1> [[TMP2]], i32 0
; CHECK-NEXT: br i1 [[TMP51]], label [[PRED_LOAD_IF21:%.*]], label [[PRED_LOAD_CONTINUE22:%.*]]
; CHECK: pred.load.if21:
; CHECK-NEXT: [[TMP52:%.*]] = or i64 [[INDEX]], 8
; CHECK-NEXT: [[TMP53:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP52]]
; CHECK-NEXT: [[TMP54:%.*]] = load i32, i32* [[TMP53]], align 4
; CHECK-NEXT: [[TMP55:%.*]] = insertelement <4 x i32> poison, i32 [[TMP54]], i32 0
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE22]]
; CHECK: pred.load.continue22:
; CHECK-NEXT: [[TMP56:%.*]] = phi <4 x i32> [ poison, [[PRED_LOAD_CONTINUE20]] ], [ [[TMP55]], [[PRED_LOAD_IF21]] ]
; CHECK-NEXT: [[TMP57:%.*]] = extractelement <4 x i1> [[TMP2]], i32 1
; CHECK-NEXT: br i1 [[TMP57]], label [[PRED_LOAD_IF23:%.*]], label [[PRED_LOAD_CONTINUE24:%.*]]
; CHECK: pred.load.if23:
; CHECK-NEXT: [[TMP58:%.*]] = or i64 [[INDEX]], 9
; CHECK-NEXT: [[TMP59:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP58]]
; CHECK-NEXT: [[TMP60:%.*]] = load i32, i32* [[TMP59]], align 4
; CHECK-NEXT: [[TMP61:%.*]] = insertelement <4 x i32> [[TMP56]], i32 [[TMP60]], i32 1
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE24]]
; CHECK: pred.load.continue24:
; CHECK-NEXT: [[TMP62:%.*]] = phi <4 x i32> [ [[TMP56]], [[PRED_LOAD_CONTINUE22]] ], [ [[TMP61]], [[PRED_LOAD_IF23]] ]
; CHECK-NEXT: [[TMP63:%.*]] = extractelement <4 x i1> [[TMP2]], i32 2
; CHECK-NEXT: br i1 [[TMP63]], label [[PRED_LOAD_IF25:%.*]], label [[PRED_LOAD_CONTINUE26:%.*]]
; CHECK: pred.load.if25:
; CHECK-NEXT: [[TMP64:%.*]] = or i64 [[INDEX]], 10
; CHECK-NEXT: [[TMP65:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP64]]
; CHECK-NEXT: [[TMP66:%.*]] = load i32, i32* [[TMP65]], align 4
; CHECK-NEXT: [[TMP67:%.*]] = insertelement <4 x i32> [[TMP62]], i32 [[TMP66]], i32 2
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE26]]
; CHECK: pred.load.continue26:
; CHECK-NEXT: [[TMP68:%.*]] = phi <4 x i32> [ [[TMP62]], [[PRED_LOAD_CONTINUE24]] ], [ [[TMP67]], [[PRED_LOAD_IF25]] ]
; CHECK-NEXT: [[TMP69:%.*]] = extractelement <4 x i1> [[TMP2]], i32 3
; CHECK-NEXT: br i1 [[TMP69]], label [[PRED_LOAD_IF27:%.*]], label [[PRED_LOAD_CONTINUE28:%.*]]
; CHECK: pred.load.if27:
; CHECK-NEXT: [[TMP70:%.*]] = or i64 [[INDEX]], 11
; CHECK-NEXT: [[TMP71:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP70]]
; CHECK-NEXT: [[TMP72:%.*]] = load i32, i32* [[TMP71]], align 4
; CHECK-NEXT: [[TMP73:%.*]] = insertelement <4 x i32> [[TMP68]], i32 [[TMP72]], i32 3
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE28]]
; CHECK: pred.load.continue28:
; CHECK-NEXT: [[TMP74:%.*]] = phi <4 x i32> [ [[TMP68]], [[PRED_LOAD_CONTINUE26]] ], [ [[TMP73]], [[PRED_LOAD_IF27]] ]
; CHECK-NEXT: [[TMP75:%.*]] = extractelement <4 x i1> [[TMP3]], i32 0
; CHECK-NEXT: br i1 [[TMP75]], label [[PRED_LOAD_IF29:%.*]], label [[PRED_LOAD_CONTINUE30:%.*]]
; CHECK: pred.load.if29:
; CHECK-NEXT: [[TMP76:%.*]] = or i64 [[INDEX]], 12
; CHECK-NEXT: [[TMP77:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP76]]
; CHECK-NEXT: [[TMP78:%.*]] = load i32, i32* [[TMP77]], align 4
; CHECK-NEXT: [[TMP79:%.*]] = insertelement <4 x i32> poison, i32 [[TMP78]], i32 0
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE30]]
; CHECK: pred.load.continue30:
; CHECK-NEXT: [[TMP80:%.*]] = phi <4 x i32> [ poison, [[PRED_LOAD_CONTINUE28]] ], [ [[TMP79]], [[PRED_LOAD_IF29]] ]
; CHECK-NEXT: [[TMP81:%.*]] = extractelement <4 x i1> [[TMP3]], i32 1
; CHECK-NEXT: br i1 [[TMP81]], label [[PRED_LOAD_IF31:%.*]], label [[PRED_LOAD_CONTINUE32:%.*]]
; CHECK: pred.load.if31:
; CHECK-NEXT: [[TMP82:%.*]] = or i64 [[INDEX]], 13
; CHECK-NEXT: [[TMP83:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP82]]
; CHECK-NEXT: [[TMP84:%.*]] = load i32, i32* [[TMP83]], align 4
; CHECK-NEXT: [[TMP85:%.*]] = insertelement <4 x i32> [[TMP80]], i32 [[TMP84]], i32 1
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE32]]
; CHECK: pred.load.continue32:
; CHECK-NEXT: [[TMP86:%.*]] = phi <4 x i32> [ [[TMP80]], [[PRED_LOAD_CONTINUE30]] ], [ [[TMP85]], [[PRED_LOAD_IF31]] ]
; CHECK-NEXT: [[TMP87:%.*]] = extractelement <4 x i1> [[TMP3]], i32 2
; CHECK-NEXT: br i1 [[TMP87]], label [[PRED_LOAD_IF33:%.*]], label [[PRED_LOAD_CONTINUE34:%.*]]
; CHECK: pred.load.if33:
; CHECK-NEXT: [[TMP88:%.*]] = or i64 [[INDEX]], 14
; CHECK-NEXT: [[TMP89:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP88]]
; CHECK-NEXT: [[TMP90:%.*]] = load i32, i32* [[TMP89]], align 4
; CHECK-NEXT: [[TMP91:%.*]] = insertelement <4 x i32> [[TMP86]], i32 [[TMP90]], i32 2
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE34]]
; CHECK: pred.load.continue34:
; CHECK-NEXT: [[TMP92:%.*]] = phi <4 x i32> [ [[TMP86]], [[PRED_LOAD_CONTINUE32]] ], [ [[TMP91]], [[PRED_LOAD_IF33]] ]
; CHECK-NEXT: [[TMP93:%.*]] = extractelement <4 x i1> [[TMP3]], i32 3
; CHECK-NEXT: br i1 [[TMP93]], label [[PRED_LOAD_IF35:%.*]], label [[PRED_LOAD_CONTINUE36]]
; CHECK: pred.load.if35:
; CHECK-NEXT: [[TMP94:%.*]] = or i64 [[INDEX]], 15
; CHECK-NEXT: [[TMP95:%.*]] = getelementptr inbounds i32, i32* [[A]], i64 [[TMP94]]
; CHECK-NEXT: [[TMP96:%.*]] = load i32, i32* [[TMP95]], align 4
; CHECK-NEXT: [[TMP97:%.*]] = insertelement <4 x i32> [[TMP92]], i32 [[TMP96]], i32 3
; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE36]]
; CHECK: pred.load.continue36:
; CHECK-NEXT: [[TMP98:%.*]] = phi <4 x i32> [ [[TMP92]], [[PRED_LOAD_CONTINUE34]] ], [ [[TMP97]], [[PRED_LOAD_IF35]] ]
; CHECK-NEXT: [[TMP99:%.*]] = select <4 x i1> [[TMP0]], <4 x i32> [[TMP26]], <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP100:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP99]])
; CHECK-NEXT: [[TMP101]] = add i32 [[TMP100]], [[VEC_PHI]]
; CHECK-NEXT: [[TMP102:%.*]] = select <4 x i1> [[TMP1]], <4 x i32> [[TMP50]], <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP103:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP102]])
; CHECK-NEXT: [[TMP104]] = add i32 [[TMP103]], [[VEC_PHI4]]
; CHECK-NEXT: [[TMP105:%.*]] = select <4 x i1> [[TMP2]], <4 x i32> [[TMP74]], <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP106:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP105]])
; CHECK-NEXT: [[TMP107]] = add i32 [[TMP106]], [[VEC_PHI5]]
; CHECK-NEXT: [[TMP108:%.*]] = select <4 x i1> [[TMP3]], <4 x i32> [[TMP98]], <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP109:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP108]])
; CHECK-NEXT: [[TMP110]] = add i32 [[TMP109]], [[VEC_PHI6]]
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 16
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], <i64 16, i64 16, i64 16, i64 16>
; CHECK-NEXT: [[TMP111:%.*]] = icmp eq i64 [[INDEX_NEXT]], 272
; CHECK-NEXT: br i1 [[TMP111]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
; CHECK: middle.block:
; CHECK-NEXT: [[BIN_RDX:%.*]] = add i32 [[TMP104]], [[TMP101]]
; CHECK-NEXT: [[BIN_RDX37:%.*]] = add i32 [[TMP107]], [[BIN_RDX]]
; CHECK-NEXT: [[BIN_RDX38:%.*]] = add i32 [[TMP110]], [[BIN_RDX37]]
; CHECK-NEXT: br i1 true, label [[DOT_CRIT_EDGE:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: br label [[DOTLR_PH:%.*]]
; CHECK: .lr.ph:
; CHECK-NEXT: br i1 undef, label [[DOT_CRIT_EDGE]], label [[DOTLR_PH]], [[LOOP5:!llvm.loop !.*]]
; CHECK: ._crit_edge:
; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ undef, [[DOTLR_PH]] ], [ [[BIN_RDX38]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: ret i32 [[SUM_0_LCSSA]]
;
entry:
br label %.lr.ph
.lr.ph: ; preds = %entry, %.lr.ph
%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %entry ]
%sum.02 = phi i32 [ %l7, %.lr.ph ], [ 0, %entry ]
%l2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%l3 = load i32, i32* %l2, align 4
%l7 = add i32 %sum.02, %l3
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 257
br i1 %exitcond, label %._crit_edge, label %.lr.ph, !llvm.loop !6
._crit_edge: ; preds = %.lr.ph
%sum.0.lcssa = phi i32 [ %l7, %.lr.ph ]
ret i32 %sum.0.lcssa
}
!6 = distinct !{!6, !7, !8}
!7 = !{!"llvm.loop.vectorize.predicate.enable", i1 true}
!8 = !{!"llvm.loop.vectorize.enable", i1 true}
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