; LLVM IR from reyadussalahin/problem-solving :: brute_force/loop/uva/F725 (Solution)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @check(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %18, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 10
  br i1 %8, label %9, label %21

9:                                                ; preds = %6
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds i32, ptr %10, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = icmp ne i32 %14, 1
  br i1 %15, label %16, label %17

16:                                               ; preds = %9
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %22

17:                                               ; preds = %9
  br label %18

18:                                               ; preds = %17
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !11

21:                                               ; preds = %6
  store i32 1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %22

22:                                               ; preds = %21, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %23 = load i32, ptr %2, align 4
  ret i32 %23
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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"}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local range(i32 0, 2) i32 @check(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr %0, align 4, !tbaa !5
  %.not = icmp eq i32 %2, 1
  br i1 %.not, label %3, label %30

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %.not.1 = icmp eq i32 %5, 1
  br i1 %.not.1, label %6, label %30

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %.not.2 = icmp eq i32 %8, 1
  br i1 %.not.2, label %9, label %30

9:                                                ; preds = %6
  %10 = getelementptr inbounds i8, ptr %0, i64 12
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not.3 = icmp eq i32 %11, 1
  br i1 %.not.3, label %12, label %30

12:                                               ; preds = %9
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %.not.4 = icmp eq i32 %14, 1
  br i1 %.not.4, label %15, label %30

15:                                               ; preds = %12
  %16 = getelementptr inbounds i8, ptr %0, i64 20
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %.not.5 = icmp eq i32 %17, 1
  br i1 %.not.5, label %18, label %30

18:                                               ; preds = %15
  %19 = getelementptr inbounds i8, ptr %0, i64 24
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %.not.6 = icmp eq i32 %20, 1
  br i1 %.not.6, label %21, label %30

21:                                               ; preds = %18
  %22 = getelementptr inbounds i8, ptr %0, i64 28
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %.not.7 = icmp eq i32 %23, 1
  br i1 %.not.7, label %24, label %30

24:                                               ; preds = %21
  %25 = getelementptr inbounds i8, ptr %0, i64 32
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %.not.8 = icmp eq i32 %26, 1
  br i1 %.not.8, label %27, label %30

27:                                               ; preds = %24
  %28 = getelementptr inbounds i8, ptr %0, i64 36
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %.not.9 = icmp eq i32 %29, 1
  %spec.select = zext i1 %.not.9 to i32
  br label %30

30:                                               ; preds = %27, %24, %21, %18, %15, %12, %9, %6, %3, %1
  %.04 = phi i32 [ 0, %1 ], [ 0, %3 ], [ 0, %6 ], [ 0, %9 ], [ 0, %12 ], [ 0, %15 ], [ 0, %18 ], [ 0, %21 ], [ 0, %24 ], [ %spec.select, %27 ]
  ret i32 %.04
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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" }

!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"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass