/
horizontal.ll
420 lines (397 loc) · 20.7 KB
/
horizontal.ll
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -slp-vectorizer -slp-threshold=-6 -S -pass-remarks-output=%t < %s | FileCheck %s
; RUN: cat %t | FileCheck -check-prefix=YAML %s
; FIXME: The threshold is changed to keep this test case a bit smaller.
; The AArch64 cost model should not give such high costs to select statements.
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux"
; YAML: --- !Passed
; YAML-NEXT: Pass: slp-vectorizer
; YAML-NEXT: Name: VectorizedHorizontalReduction
; YAML-NEXT: Function: test_select
; YAML-NEXT: Args:
; YAML-NEXT: - String: 'Vectorized horizontal reduction with cost '
; YAML-NEXT: - Cost: '-8'
; YAML-NEXT: - String: ' and with tree size '
; YAML-NEXT: - TreeSize: '8'
define i32 @test_select(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h) {
; CHECK-LABEL: @test_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP_22:%.*]] = icmp sgt i32 [[H:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_22]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
; CHECK: for.body.lr.ph:
; CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[LX:%.*]] to i64
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[S_026:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[OP_EXTRA:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[J_025:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[P2_024:%.*]] = phi i32* [ [[BLK2:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR29:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[P1_023:%.*]] = phi i32* [ [[BLK1:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[P1_023]], i64 1
; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, i32* [[P2_024]], i64 1
; CHECK-NEXT: [[ARRAYIDX12:%.*]] = getelementptr inbounds i32, i32* [[P1_023]], i64 2
; CHECK-NEXT: [[ARRAYIDX13:%.*]] = getelementptr inbounds i32, i32* [[P2_024]], i64 2
; CHECK-NEXT: [[ARRAYIDX20:%.*]] = getelementptr inbounds i32, i32* [[P1_023]], i64 3
; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[P1_023]] to <4 x i32>*
; CHECK-NEXT: [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
; CHECK-NEXT: [[ARRAYIDX21:%.*]] = getelementptr inbounds i32, i32* [[P2_024]], i64 3
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i32* [[P2_024]] to <4 x i32>*
; CHECK-NEXT: [[TMP3:%.*]] = load <4 x i32>, <4 x i32>* [[TMP2]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = sub nsw <4 x i32> [[TMP1]], [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = icmp slt <4 x i32> [[TMP4]], zeroinitializer
; CHECK-NEXT: [[TMP6:%.*]] = sub nsw <4 x i32> zeroinitializer, [[TMP4]]
; CHECK-NEXT: [[TMP7:%.*]] = select <4 x i1> [[TMP5]], <4 x i32> [[TMP6]], <4 x i32> [[TMP4]]
; CHECK-NEXT: [[TMP8:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP7]])
; CHECK-NEXT: [[OP_EXTRA]] = add nsw i32 [[TMP8]], [[S_026]]
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds i32, i32* [[P1_023]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[ADD_PTR29]] = getelementptr inbounds i32, i32* [[P2_024]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[J_025]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[H]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: [[S_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OP_EXTRA]], [[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[S_0_LCSSA]]
;
entry:
%cmp.22 = icmp sgt i32 %h, 0
br i1 %cmp.22, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%idx.ext = sext i32 %lx to i64
br label %for.body
for.body: ; preds = %for.body, %for.body.lr.ph
%s.026 = phi i32 [ 0, %for.body.lr.ph ], [ %add27, %for.body ]
%j.025 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%p2.024 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr29, %for.body ]
%p1.023 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %for.body ]
%0 = load i32, i32* %p1.023, align 4
%1 = load i32, i32* %p2.024, align 4
%sub = sub nsw i32 %0, %1
%cmp2 = icmp slt i32 %sub, 0
%sub3 = sub nsw i32 0, %sub
%sub3.sub = select i1 %cmp2, i32 %sub3, i32 %sub
%add = add nsw i32 %sub3.sub, %s.026
%arrayidx4 = getelementptr inbounds i32, i32* %p1.023, i64 1
%2 = load i32, i32* %arrayidx4, align 4
%arrayidx5 = getelementptr inbounds i32, i32* %p2.024, i64 1
%3 = load i32, i32* %arrayidx5, align 4
%sub6 = sub nsw i32 %2, %3
%cmp7 = icmp slt i32 %sub6, 0
%sub9 = sub nsw i32 0, %sub6
%v.1 = select i1 %cmp7, i32 %sub9, i32 %sub6
%add11 = add nsw i32 %add, %v.1
%arrayidx12 = getelementptr inbounds i32, i32* %p1.023, i64 2
%4 = load i32, i32* %arrayidx12, align 4
%arrayidx13 = getelementptr inbounds i32, i32* %p2.024, i64 2
%5 = load i32, i32* %arrayidx13, align 4
%sub14 = sub nsw i32 %4, %5
%cmp15 = icmp slt i32 %sub14, 0
%sub17 = sub nsw i32 0, %sub14
%sub17.sub14 = select i1 %cmp15, i32 %sub17, i32 %sub14
%add19 = add nsw i32 %add11, %sub17.sub14
%arrayidx20 = getelementptr inbounds i32, i32* %p1.023, i64 3
%6 = load i32, i32* %arrayidx20, align 4
%arrayidx21 = getelementptr inbounds i32, i32* %p2.024, i64 3
%7 = load i32, i32* %arrayidx21, align 4
%sub22 = sub nsw i32 %6, %7
%cmp23 = icmp slt i32 %sub22, 0
%sub25 = sub nsw i32 0, %sub22
%v.3 = select i1 %cmp23, i32 %sub25, i32 %sub22
%add27 = add nsw i32 %add19, %v.3
%add.ptr = getelementptr inbounds i32, i32* %p1.023, i64 %idx.ext
%add.ptr29 = getelementptr inbounds i32, i32* %p2.024, i64 %idx.ext
%inc = add nuw nsw i32 %j.025, 1
%exitcond = icmp eq i32 %inc, %h
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%s.0.lcssa = phi i32 [ 0, %entry ], [ %add27, %for.end.loopexit ]
ret i32 %s.0.lcssa
}
;; Check whether SLP can find a reduction phi whose incoming blocks are not
;; the same as the block containing the phi.
;;
;; Came from code like,
;;
;; int s = 0;
;; for (int j = 0; j < h; j++) {
;; s += p1[0] * p2[0]
;; s += p1[1] * p2[1];
;; s += p1[2] * p2[2];
;; s += p1[3] * p2[3];
;; if (s >= lim)
;; break;
;; p1 += lx;
;; p2 += lx;
;; }
define i32 @reduction_with_br(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) {
; YAML: --- !Passed
; YAML-NEXT: Pass: slp-vectorizer
; YAML-NEXT: Name: VectorizedHorizontalReduction
; YAML-NEXT: Function: reduction_with_br
; YAML-NEXT: Args:
; YAML-NEXT: - String: 'Vectorized horizontal reduction with cost '
; YAML-NEXT: - Cost: '-11'
; YAML-NEXT: - String: ' and with tree size '
; YAML-NEXT: - TreeSize: '3'
; CHECK-LABEL: @reduction_with_br(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP_16:%.*]] = icmp sgt i32 [[H:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_16]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
; CHECK: for.body.lr.ph:
; CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[LX:%.*]] to i64
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[S_020:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[OP_EXTRA:%.*]], [[IF_END:%.*]] ]
; CHECK-NEXT: [[J_019:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END]] ]
; CHECK-NEXT: [[P2_018:%.*]] = phi i32* [ [[BLK2:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR16:%.*]], [[IF_END]] ]
; CHECK-NEXT: [[P1_017:%.*]] = phi i32* [ [[BLK1:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR:%.*]], [[IF_END]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[P1_017]], i64 1
; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[P2_018]], i64 1
; CHECK-NEXT: [[ARRAYIDX6:%.*]] = getelementptr inbounds i32, i32* [[P1_017]], i64 2
; CHECK-NEXT: [[ARRAYIDX7:%.*]] = getelementptr inbounds i32, i32* [[P2_018]], i64 2
; CHECK-NEXT: [[ARRAYIDX10:%.*]] = getelementptr inbounds i32, i32* [[P1_017]], i64 3
; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[P1_017]] to <4 x i32>*
; CHECK-NEXT: [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
; CHECK-NEXT: [[ARRAYIDX11:%.*]] = getelementptr inbounds i32, i32* [[P2_018]], i64 3
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i32* [[P2_018]] to <4 x i32>*
; CHECK-NEXT: [[TMP3:%.*]] = load <4 x i32>, <4 x i32>* [[TMP2]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = mul nsw <4 x i32> [[TMP3]], [[TMP1]]
; CHECK-NEXT: [[TMP5:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP4]])
; CHECK-NEXT: [[OP_EXTRA]] = add nsw i32 [[TMP5]], [[S_020]]
; CHECK-NEXT: [[CMP14:%.*]] = icmp slt i32 [[OP_EXTRA]], [[LIM:%.*]]
; CHECK-NEXT: br i1 [[CMP14]], label [[IF_END]], label [[FOR_END_LOOPEXIT:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds i32, i32* [[P1_017]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[ADD_PTR16]] = getelementptr inbounds i32, i32* [[P2_018]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[J_019]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], [[H]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: [[S_1:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OP_EXTRA]], [[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[S_1]]
;
entry:
%cmp.16 = icmp sgt i32 %h, 0
br i1 %cmp.16, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%idx.ext = sext i32 %lx to i64
br label %for.body
for.body: ; preds = %for.body.lr.ph, %if.end
%s.020 = phi i32 [ 0, %for.body.lr.ph ], [ %add13, %if.end ]
%j.019 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end ]
%p2.018 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr16, %if.end ]
%p1.017 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end ]
%0 = load i32, i32* %p1.017, align 4
%1 = load i32, i32* %p2.018, align 4
%mul = mul nsw i32 %1, %0
%add = add nsw i32 %mul, %s.020
%arrayidx2 = getelementptr inbounds i32, i32* %p1.017, i64 1
%2 = load i32, i32* %arrayidx2, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %p2.018, i64 1
%3 = load i32, i32* %arrayidx3, align 4
%mul4 = mul nsw i32 %3, %2
%add5 = add nsw i32 %add, %mul4
%arrayidx6 = getelementptr inbounds i32, i32* %p1.017, i64 2
%4 = load i32, i32* %arrayidx6, align 4
%arrayidx7 = getelementptr inbounds i32, i32* %p2.018, i64 2
%5 = load i32, i32* %arrayidx7, align 4
%mul8 = mul nsw i32 %5, %4
%add9 = add nsw i32 %add5, %mul8
%arrayidx10 = getelementptr inbounds i32, i32* %p1.017, i64 3
%6 = load i32, i32* %arrayidx10, align 4
%arrayidx11 = getelementptr inbounds i32, i32* %p2.018, i64 3
%7 = load i32, i32* %arrayidx11, align 4
%mul12 = mul nsw i32 %7, %6
%add13 = add nsw i32 %add9, %mul12
%cmp14 = icmp slt i32 %add13, %lim
br i1 %cmp14, label %if.end, label %for.end.loopexit
if.end: ; preds = %for.body
%add.ptr = getelementptr inbounds i32, i32* %p1.017, i64 %idx.ext
%add.ptr16 = getelementptr inbounds i32, i32* %p2.018, i64 %idx.ext
%inc = add nuw nsw i32 %j.019, 1
%cmp = icmp slt i32 %inc, %h
br i1 %cmp, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body, %if.end
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%s.1 = phi i32 [ 0, %entry ], [ %add13, %for.end.loopexit ]
ret i32 %s.1
}
; YAML: --- !Passed
; YAML-NEXT: Pass: slp-vectorizer
; YAML-NEXT: Name: VectorizedHorizontalReduction
; YAML-NEXT: Function: test_unrolled_select
; YAML-NEXT: Args:
; YAML-NEXT: - String: 'Vectorized horizontal reduction with cost '
; YAML-NEXT: - Cost: '-31'
; YAML-NEXT: - String: ' and with tree size '
; YAML-NEXT: - TreeSize: '10'
define i32 @test_unrolled_select(i8* noalias nocapture readonly %blk1, i8* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) #0 {
; CHECK-LABEL: @test_unrolled_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP_43:%.*]] = icmp sgt i32 [[H:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_43]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
; CHECK: for.body.lr.ph:
; CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[LX:%.*]] to i64
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[S_047:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[OP_EXTRA:%.*]], [[IF_END_86:%.*]] ]
; CHECK-NEXT: [[J_046:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END_86]] ]
; CHECK-NEXT: [[P2_045:%.*]] = phi i8* [ [[BLK2:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR88:%.*]], [[IF_END_86]] ]
; CHECK-NEXT: [[P1_044:%.*]] = phi i8* [ [[BLK1:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR:%.*]], [[IF_END_86]] ]
; CHECK-NEXT: [[ARRAYIDX6:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 1
; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 1
; CHECK-NEXT: [[ARRAYIDX17:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 2
; CHECK-NEXT: [[ARRAYIDX19:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 2
; CHECK-NEXT: [[ARRAYIDX28:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 3
; CHECK-NEXT: [[ARRAYIDX30:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 3
; CHECK-NEXT: [[ARRAYIDX39:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 4
; CHECK-NEXT: [[ARRAYIDX41:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 4
; CHECK-NEXT: [[ARRAYIDX50:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 5
; CHECK-NEXT: [[ARRAYIDX52:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 5
; CHECK-NEXT: [[ARRAYIDX61:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 6
; CHECK-NEXT: [[ARRAYIDX63:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 6
; CHECK-NEXT: [[ARRAYIDX72:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 7
; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[P1_044]] to <8 x i8>*
; CHECK-NEXT: [[TMP1:%.*]] = load <8 x i8>, <8 x i8>* [[TMP0]], align 1
; CHECK-NEXT: [[TMP2:%.*]] = zext <8 x i8> [[TMP1]] to <8 x i32>
; CHECK-NEXT: [[ARRAYIDX74:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 7
; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[P2_045]] to <8 x i8>*
; CHECK-NEXT: [[TMP4:%.*]] = load <8 x i8>, <8 x i8>* [[TMP3]], align 1
; CHECK-NEXT: [[TMP5:%.*]] = zext <8 x i8> [[TMP4]] to <8 x i32>
; CHECK-NEXT: [[TMP6:%.*]] = sub nsw <8 x i32> [[TMP2]], [[TMP5]]
; CHECK-NEXT: [[TMP7:%.*]] = icmp slt <8 x i32> [[TMP6]], zeroinitializer
; CHECK-NEXT: [[TMP8:%.*]] = sub nsw <8 x i32> zeroinitializer, [[TMP6]]
; CHECK-NEXT: [[TMP9:%.*]] = select <8 x i1> [[TMP7]], <8 x i32> [[TMP8]], <8 x i32> [[TMP6]]
; CHECK-NEXT: [[TMP10:%.*]] = call i32 @llvm.vector.reduce.add.v8i32(<8 x i32> [[TMP9]])
; CHECK-NEXT: [[OP_EXTRA]] = add nsw i32 [[TMP10]], [[S_047]]
; CHECK-NEXT: [[CMP83:%.*]] = icmp slt i32 [[OP_EXTRA]], [[LIM:%.*]]
; CHECK-NEXT: br i1 [[CMP83]], label [[IF_END_86]], label [[FOR_END_LOOPEXIT:%.*]]
; CHECK: if.end.86:
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds i8, i8* [[P1_044]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[ADD_PTR88]] = getelementptr inbounds i8, i8* [[P2_045]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[J_046]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], [[H]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: [[S_1:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OP_EXTRA]], [[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[S_1]]
;
entry:
%cmp.43 = icmp sgt i32 %h, 0
br i1 %cmp.43, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%idx.ext = sext i32 %lx to i64
br label %for.body
for.body: ; preds = %for.body.lr.ph, %if.end.86
%s.047 = phi i32 [ 0, %for.body.lr.ph ], [ %add82, %if.end.86 ]
%j.046 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end.86 ]
%p2.045 = phi i8* [ %blk2, %for.body.lr.ph ], [ %add.ptr88, %if.end.86 ]
%p1.044 = phi i8* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end.86 ]
%0 = load i8, i8* %p1.044, align 1
%conv = zext i8 %0 to i32
%1 = load i8, i8* %p2.045, align 1
%conv2 = zext i8 %1 to i32
%sub = sub nsw i32 %conv, %conv2
%cmp3 = icmp slt i32 %sub, 0
%sub5 = sub nsw i32 0, %sub
%sub5.sub = select i1 %cmp3, i32 %sub5, i32 %sub
%add = add nsw i32 %sub5.sub, %s.047
%arrayidx6 = getelementptr inbounds i8, i8* %p1.044, i64 1
%2 = load i8, i8* %arrayidx6, align 1
%conv7 = zext i8 %2 to i32
%arrayidx8 = getelementptr inbounds i8, i8* %p2.045, i64 1
%3 = load i8, i8* %arrayidx8, align 1
%conv9 = zext i8 %3 to i32
%sub10 = sub nsw i32 %conv7, %conv9
%cmp11 = icmp slt i32 %sub10, 0
%sub14 = sub nsw i32 0, %sub10
%v.1 = select i1 %cmp11, i32 %sub14, i32 %sub10
%add16 = add nsw i32 %add, %v.1
%arrayidx17 = getelementptr inbounds i8, i8* %p1.044, i64 2
%4 = load i8, i8* %arrayidx17, align 1
%conv18 = zext i8 %4 to i32
%arrayidx19 = getelementptr inbounds i8, i8* %p2.045, i64 2
%5 = load i8, i8* %arrayidx19, align 1
%conv20 = zext i8 %5 to i32
%sub21 = sub nsw i32 %conv18, %conv20
%cmp22 = icmp slt i32 %sub21, 0
%sub25 = sub nsw i32 0, %sub21
%sub25.sub21 = select i1 %cmp22, i32 %sub25, i32 %sub21
%add27 = add nsw i32 %add16, %sub25.sub21
%arrayidx28 = getelementptr inbounds i8, i8* %p1.044, i64 3
%6 = load i8, i8* %arrayidx28, align 1
%conv29 = zext i8 %6 to i32
%arrayidx30 = getelementptr inbounds i8, i8* %p2.045, i64 3
%7 = load i8, i8* %arrayidx30, align 1
%conv31 = zext i8 %7 to i32
%sub32 = sub nsw i32 %conv29, %conv31
%cmp33 = icmp slt i32 %sub32, 0
%sub36 = sub nsw i32 0, %sub32
%v.3 = select i1 %cmp33, i32 %sub36, i32 %sub32
%add38 = add nsw i32 %add27, %v.3
%arrayidx39 = getelementptr inbounds i8, i8* %p1.044, i64 4
%8 = load i8, i8* %arrayidx39, align 1
%conv40 = zext i8 %8 to i32
%arrayidx41 = getelementptr inbounds i8, i8* %p2.045, i64 4
%9 = load i8, i8* %arrayidx41, align 1
%conv42 = zext i8 %9 to i32
%sub43 = sub nsw i32 %conv40, %conv42
%cmp44 = icmp slt i32 %sub43, 0
%sub47 = sub nsw i32 0, %sub43
%sub47.sub43 = select i1 %cmp44, i32 %sub47, i32 %sub43
%add49 = add nsw i32 %add38, %sub47.sub43
%arrayidx50 = getelementptr inbounds i8, i8* %p1.044, i64 5
%10 = load i8, i8* %arrayidx50, align 1
%conv51 = zext i8 %10 to i32
%arrayidx52 = getelementptr inbounds i8, i8* %p2.045, i64 5
%11 = load i8, i8* %arrayidx52, align 1
%conv53 = zext i8 %11 to i32
%sub54 = sub nsw i32 %conv51, %conv53
%cmp55 = icmp slt i32 %sub54, 0
%sub58 = sub nsw i32 0, %sub54
%v.5 = select i1 %cmp55, i32 %sub58, i32 %sub54
%add60 = add nsw i32 %add49, %v.5
%arrayidx61 = getelementptr inbounds i8, i8* %p1.044, i64 6
%12 = load i8, i8* %arrayidx61, align 1
%conv62 = zext i8 %12 to i32
%arrayidx63 = getelementptr inbounds i8, i8* %p2.045, i64 6
%13 = load i8, i8* %arrayidx63, align 1
%conv64 = zext i8 %13 to i32
%sub65 = sub nsw i32 %conv62, %conv64
%cmp66 = icmp slt i32 %sub65, 0
%sub69 = sub nsw i32 0, %sub65
%sub69.sub65 = select i1 %cmp66, i32 %sub69, i32 %sub65
%add71 = add nsw i32 %add60, %sub69.sub65
%arrayidx72 = getelementptr inbounds i8, i8* %p1.044, i64 7
%14 = load i8, i8* %arrayidx72, align 1
%conv73 = zext i8 %14 to i32
%arrayidx74 = getelementptr inbounds i8, i8* %p2.045, i64 7
%15 = load i8, i8* %arrayidx74, align 1
%conv75 = zext i8 %15 to i32
%sub76 = sub nsw i32 %conv73, %conv75
%cmp77 = icmp slt i32 %sub76, 0
%sub80 = sub nsw i32 0, %sub76
%v.7 = select i1 %cmp77, i32 %sub80, i32 %sub76
%add82 = add nsw i32 %add71, %v.7
%cmp83 = icmp slt i32 %add82, %lim
br i1 %cmp83, label %if.end.86, label %for.end.loopexit
if.end.86: ; preds = %for.body
%add.ptr = getelementptr inbounds i8, i8* %p1.044, i64 %idx.ext
%add.ptr88 = getelementptr inbounds i8, i8* %p2.045, i64 %idx.ext
%inc = add nuw nsw i32 %j.046, 1
%cmp = icmp slt i32 %inc, %h
br i1 %cmp, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body, %if.end.86
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%s.1 = phi i32 [ 0, %entry ], [ %add82, %for.end.loopexit ]
ret i32 %s.1
}