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llvm-project/llvm/test/Transforms/SLPVectorizer/AArch64/horizontal.ll
Alexey Bataev 8b1eeafb91 [SLP] Fix for PR31847: Assertion failed: (isLoopInvariant(Operands[i], L) && "SCEVAddRecExpr operand is not loop-invariant!") 
Initially SLP vectorizer replaced all going-to-be-vectorized
instructions with Undef values. It may break ScalarEvaluation and may
cause a crash.
Reworked SLP vectorizer so that it does not replace vectorized
instructions by UndefValue anymore. Instead vectorized instructions are
marked for deletion inside if BoUpSLP class and deleted upon class
destruction.

Reviewers: mzolotukhin, mkuper, hfinkel, RKSimon, davide, spatel

Subscribers: RKSimon, Gerolf, anemet, hans, majnemer, llvm-commits, sanjoy

Differential Revision: https://reviews.llvm.org/D29641

llvm-svn: 373166
2019-09-29 14:18:06 +00:00

421 lines
21 KiB
LLVM
Raw Blame History

; 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.experimental.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.experimental.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: '-47'
; 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.experimental.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
}
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