; LLVM IR from MakeContributions/DSA :: algorithms/C/arrays (largestElement)

; 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"

@.str = external hidden unnamed_addr constant [30 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [38 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [100 x i32], align 16
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 400, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %8 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3)
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %10)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %24, %0
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %27

17:                                               ; preds = %12
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %18)
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %21
  %23 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %22)
  br label %24

24:                                               ; preds = %17
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %5, align 4, !tbaa !5
  br label %12, !llvm.loop !9

27:                                               ; preds = %16
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %40, %27
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %43

34:                                               ; preds = %29
  %35 = load i32, ptr %6, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, i32 noundef %38)
  br label %40

40:                                               ; preds = %34
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %6, align 4, !tbaa !5
  br label %29, !llvm.loop !11

43:                                               ; preds = %33
  %44 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 0
  %45 = load i32, ptr %44, align 16, !tbaa !5
  store i32 %45, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 1, ptr %7, align 4, !tbaa !5
  br label %46

46:                                               ; preds = %64, %43
  %47 = load i32, ptr %7, align 4, !tbaa !5
  %48 = load i32, ptr %3, align 4, !tbaa !5
  %49 = icmp slt i32 %47, %48
  br i1 %49, label %51, label %50

50:                                               ; preds = %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %67

51:                                               ; preds = %46
  %52 = load i32, ptr %7, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %53
  %55 = load i32, ptr %54, align 4, !tbaa !5
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = icmp sgt i32 %55, %56
  br i1 %57, label %58, label %63

58:                                               ; preds = %51
  %59 = load i32, ptr %7, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds [100 x i32], ptr %2, i64 0, i64 %60
  %62 = load i32, ptr %61, align 4, !tbaa !5
  store i32 %62, ptr %4, align 4, !tbaa !5
  br label %63

63:                                               ; preds = %58, %51
  br label %64

64:                                               ; preds = %63
  %65 = load i32, ptr %7, align 4, !tbaa !5
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %7, align 4, !tbaa !5
  br label %46, !llvm.loop !12

67:                                               ; preds = %50
  %68 = load i32, ptr %4, align 4, !tbaa !5
  %69 = call i32 (ptr, ...) @printf(ptr noundef @.str.6, i32 noundef %68)
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 400, ptr %2) #3
  ret i32 0
}

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

declare i32 @printf(ptr noundef, ...) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; 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 = { "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 #3 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; 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"

@.str = external hidden unnamed_addr constant [30 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [38 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [100 x i32], align 16
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 400, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2)
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %5)
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp sgt i32 %10, 0
  br i1 %11, label %.lr.ph20, label %._crit_edge21.thread

._crit_edge21.thread:                             ; preds = %._crit_edge
  %12 = load i32, ptr %1, align 16, !tbaa !5
  br label %._crit_edge26

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %13 = trunc nuw nsw i64 %indvars.iv to i32
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %13)
  %15 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %indvars.iv
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %15)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge21:                                    ; preds = %.lr.ph20
  %20 = load i32, ptr %1, align 16, !tbaa !5
  %21 = icmp sgt i32 %32, 1
  br i1 %21, label %.lr.ph25.preheader, label %._crit_edge26

.lr.ph25.preheader:                               ; preds = %._crit_edge21
  %wide.trip.count = zext nneg i32 %32 to i64
  %22 = add nsw i64 %wide.trip.count, -1
  %min.iters.check = icmp ult i32 %32, 9
  br i1 %min.iters.check, label %.lr.ph25.preheader39, label %vector.ph

.lr.ph25.preheader39:                             ; preds = %middle.block, %.lr.ph25.preheader
  %indvars.iv33.ph = phi i64 [ 1, %.lr.ph25.preheader ], [ %ind.end, %middle.block ]
  %.01522.ph = phi i32 [ %20, %.lr.ph25.preheader ], [ %28, %middle.block ]
  br label %.lr.ph25

vector.ph:                                        ; preds = %.lr.ph25.preheader
  %n.vec = and i64 %22, -8
  %ind.end = or disjoint i64 %n.vec, 1
  %minmax.ident.splatinsert = insertelement <4 x i32> poison, i32 %20, i64 0
  %minmax.ident.splat = shufflevector <4 x i32> %minmax.ident.splatinsert, <4 x i32> poison, <4 x i32> zeroinitializer
  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> [ %minmax.ident.splat, %vector.ph ], [ %25, %vector.body ]
  %vec.phi37 = phi <4 x i32> [ %minmax.ident.splat, %vector.ph ], [ %26, %vector.body ]
  %offset.idx = or disjoint i64 %index, 1
  %23 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %offset.idx
  %24 = getelementptr inbounds i8, ptr %23, i64 16
  %wide.load = load <4 x i32>, ptr %23, align 4, !tbaa !5
  %wide.load38 = load <4 x i32>, ptr %24, align 4, !tbaa !5
  %25 = call <4 x i32> @llvm.smax.v4i32(<4 x i32> %wide.load, <4 x i32> %vec.phi)
  %26 = call <4 x i32> @llvm.smax.v4i32(<4 x i32> %wide.load38, <4 x i32> %vec.phi37)
  %index.next = add nuw i64 %index, 8
  %27 = icmp eq i64 %index.next, %n.vec
  br i1 %27, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %rdx.minmax = call <4 x i32> @llvm.smax.v4i32(<4 x i32> %25, <4 x i32> %26)
  %28 = call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> %rdx.minmax)
  %cmp.n = icmp eq i64 %22, %n.vec
  br i1 %cmp.n, label %._crit_edge26, label %.lr.ph25.preheader39

.lr.ph20:                                         ; preds = %._crit_edge, %.lr.ph20
  %indvars.iv30 = phi i64 [ %indvars.iv.next31, %.lr.ph20 ], [ 0, %._crit_edge ]
  %29 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %indvars.iv30
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, i32 noundef %30)
  %indvars.iv.next31 = add nuw nsw i64 %indvars.iv30, 1
  %32 = load i32, ptr %2, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = icmp slt i64 %indvars.iv.next31, %33
  br i1 %34, label %.lr.ph20, label %._crit_edge21, !llvm.loop !14

._crit_edge26:                                    ; preds = %.lr.ph25, %middle.block, %._crit_edge21.thread, %._crit_edge21
  %.015.lcssa = phi i32 [ %20, %._crit_edge21 ], [ %12, %._crit_edge21.thread ], [ %28, %middle.block ], [ %spec.select, %.lr.ph25 ]
  %35 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6, i32 noundef %.015.lcssa)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 400, ptr nonnull %1) #4
  ret i32 0

.lr.ph25:                                         ; preds = %.lr.ph25.preheader39, %.lr.ph25
  %indvars.iv33 = phi i64 [ %indvars.iv.next34, %.lr.ph25 ], [ %indvars.iv33.ph, %.lr.ph25.preheader39 ]
  %.01522 = phi i32 [ %spec.select, %.lr.ph25 ], [ %.01522.ph, %.lr.ph25.preheader39 ]
  %36 = getelementptr inbounds [100 x i32], ptr %1, i64 0, i64 %indvars.iv33
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %spec.select = call i32 @llvm.smax.i32(i32 %37, i32 %.01522)
  %indvars.iv.next34 = add nuw nsw i64 %indvars.iv33, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next34, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge26, label %.lr.ph25, !llvm.loop !15
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x i32> @llvm.smax.v4i32(<4 x i32>, <4 x i32>) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.smax.v4i32(<4 x i32>) #3

attributes #0 = { nofree 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10, !12, !13}
!12 = !{!"llvm.loop.isvectorized", i32 1}
!13 = !{!"llvm.loop.unroll.runtime.disable"}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10, !13, !12}


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