; LLVM IR from AlgoGenesis/C :: Optimization Algorithms/ SlidingWindow (SlidingWindow)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nounwind uwtable
define dso_local i32 @maxSum(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %24, %3
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %27

16:                                               ; preds = %11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i32, ptr %9, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i32, ptr %17, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !9
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = add nsw i32 %22, %21
  store i32 %23, ptr %8, align 4, !tbaa !9
  br label %24

24:                                               ; preds = %16
  %25 = load i32, ptr %9, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !11

27:                                               ; preds = %15
  %28 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %28, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %29 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %29, ptr %10, align 4, !tbaa !9
  br label %30

30:                                               ; preds = %57, %27
  %31 = load i32, ptr %10, align 4, !tbaa !9
  %32 = load i32, ptr %5, align 4, !tbaa !9
  %33 = icmp slt i32 %31, %32
  br i1 %33, label %35, label %34

34:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  br label %60

35:                                               ; preds = %30
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = load i32, ptr %10, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i32, ptr %36, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !9
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = load i32, ptr %10, align 4, !tbaa !9
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = sub nsw i32 %42, %43
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds i32, ptr %41, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !9
  %48 = sub nsw i32 %40, %47
  %49 = load i32, ptr %8, align 4, !tbaa !9
  %50 = add nsw i32 %49, %48
  store i32 %50, ptr %8, align 4, !tbaa !9
  %51 = load i32, ptr %8, align 4, !tbaa !9
  %52 = load i32, ptr %7, align 4, !tbaa !9
  %53 = icmp sgt i32 %51, %52
  br i1 %53, label %54, label %56

54:                                               ; preds = %35
  %55 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %55, ptr %7, align 4, !tbaa !9
  br label %56

56:                                               ; preds = %54, %35
  br label %57

57:                                               ; preds = %56
  %58 = load i32, ptr %10, align 4, !tbaa !9
  %59 = add nsw i32 %58, 1
  store i32 %59, ptr %10, align 4, !tbaa !9
  br label %30, !llvm.loop !13

60:                                               ; preds = %34
  %61 = load i32, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %61
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @maxSum(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %2, 0
  br i1 %4, label %.lr.ph.preheader, label %.preheader

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %2 to i64
  %min.iters.check = icmp ult i32 %2, 8
  br i1 %min.iters.check, label %.lr.ph.preheader41, label %vector.ph

.lr.ph.preheader41:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %.02126.ph = phi i32 [ 0, %.lr.ph.preheader ], [ %10, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %7, %vector.body ]
  %vec.phi39 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %8, %vector.body ]
  %5 = getelementptr inbounds i32, ptr %0, i64 %index
  %6 = getelementptr inbounds i8, ptr %5, i64 16
  %wide.load = load <4 x i32>, ptr %5, align 4, !tbaa !5
  %wide.load40 = load <4 x i32>, ptr %6, align 4, !tbaa !5
  %7 = add <4 x i32> %wide.load, %vec.phi
  %8 = add <4 x i32> %wide.load40, %vec.phi39
  %index.next = add nuw i64 %index, 8
  %9 = icmp eq i64 %index.next, %n.vec
  br i1 %9, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <4 x i32> %8, %7
  %10 = tail call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %.preheader, label %.lr.ph.preheader41

.preheader:                                       ; preds = %.lr.ph, %middle.block, %3
  %.021.lcssa = phi i32 [ 0, %3 ], [ %10, %middle.block ], [ %23, %.lr.ph ]
  %11 = icmp slt i32 %2, %1
  br i1 %11, label %.lr.ph31.preheader, label %._crit_edge

.lr.ph31.preheader:                               ; preds = %.preheader
  %12 = sext i32 %2 to i64
  %wide.trip.count37 = sext i32 %1 to i64
  %13 = sub nsw i64 %wide.trip.count37, %12
  %xtraiter = and i64 %13, 1
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph31.prol.loopexit, label %.lr.ph31.prol

.lr.ph31.prol:                                    ; preds = %.lr.ph31.preheader
  %14 = getelementptr inbounds i32, ptr %0, i64 %12
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = load i32, ptr %0, align 4, !tbaa !5
  %17 = sub nsw i32 %15, %16
  %18 = add nsw i32 %17, %.021.lcssa
  %spec.select.prol = tail call i32 @llvm.smax.i32(i32 %18, i32 %.021.lcssa)
  %indvars.iv.next35.prol = add nsw i64 %12, 1
  br label %.lr.ph31.prol.loopexit

.lr.ph31.prol.loopexit:                           ; preds = %.lr.ph31.prol, %.lr.ph31.preheader
  %spec.select.lcssa.unr = phi i32 [ poison, %.lr.ph31.preheader ], [ %spec.select.prol, %.lr.ph31.prol ]
  %indvars.iv34.unr = phi i64 [ %12, %.lr.ph31.preheader ], [ %indvars.iv.next35.prol, %.lr.ph31.prol ]
  %.129.unr = phi i32 [ %.021.lcssa, %.lr.ph31.preheader ], [ %18, %.lr.ph31.prol ]
  %.02228.unr = phi i32 [ %.021.lcssa, %.lr.ph31.preheader ], [ %spec.select.prol, %.lr.ph31.prol ]
  %19 = add nsw i64 %wide.trip.count37, -1
  %20 = icmp eq i64 %19, %12
  br i1 %20, label %._crit_edge, label %.lr.ph31

.lr.ph:                                           ; preds = %.lr.ph.preheader41, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader41 ]
  %.02126 = phi i32 [ %23, %.lr.ph ], [ %.02126.ph, %.lr.ph.preheader41 ]
  %21 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = add nsw i32 %22, %.02126
  %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 %.preheader, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph31.prol.loopexit, %.lr.ph31, %.preheader
  %.022.lcssa = phi i32 [ %.021.lcssa, %.preheader ], [ %spec.select.lcssa.unr, %.lr.ph31.prol.loopexit ], [ %spec.select.1, %.lr.ph31 ]
  ret i32 %.022.lcssa

.lr.ph31:                                         ; preds = %.lr.ph31.prol.loopexit, %.lr.ph31
  %indvars.iv34 = phi i64 [ %indvars.iv.next35.1, %.lr.ph31 ], [ %indvars.iv34.unr, %.lr.ph31.prol.loopexit ]
  %.129 = phi i32 [ %37, %.lr.ph31 ], [ %.129.unr, %.lr.ph31.prol.loopexit ]
  %.02228 = phi i32 [ %spec.select.1, %.lr.ph31 ], [ %.02228.unr, %.lr.ph31.prol.loopexit ]
  %24 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv34
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = sub nsw i64 %indvars.iv34, %12
  %27 = getelementptr inbounds i32, ptr %0, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = sub nsw i32 %25, %28
  %30 = add nsw i32 %29, %.129
  %spec.select = tail call i32 @llvm.smax.i32(i32 %30, i32 %.02228)
  %indvars.iv.next35 = add nsw i64 %indvars.iv34, 1
  %31 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next35
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = sub nsw i64 %indvars.iv.next35, %12
  %34 = getelementptr inbounds i32, ptr %0, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !5
  %36 = sub nsw i32 %32, %35
  %37 = add nsw i32 %36, %30
  %spec.select.1 = tail call i32 @llvm.smax.i32(i32 %37, i32 %spec.select)
  %indvars.iv.next35.1 = add nsw i64 %indvars.iv34, 2
  %exitcond38.not.1 = icmp eq i64 %indvars.iv.next35.1, %wide.trip.count37
  br i1 %exitcond38.not.1, label %._crit_edge, label %.lr.ph31, !llvm.loop !14
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #1

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}
!14 = distinct !{!14, !10}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass