; LLVM IR from ahampriyanshu/algo-ds-101 :: Algorithms/DP/Sudoku_Solver/Sudoku_Solver.ll (Z9UsedInColPA9_iii)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z9UsedInColPA9_iii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, 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
  br label %10

10:                                               ; preds = %27, %3
  %11 = load i32, ptr %8, align 4, !tbaa !9
  %12 = icmp slt i32 %11, 9
  br i1 %12, label %14, label %13

13:                                               ; preds = %10
  store i32 2, ptr %9, align 4
  br label %30

14:                                               ; preds = %10
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [9 x i32], ptr %15, i64 %17
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [9 x i32], ptr %18, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !9
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = icmp eq i32 %22, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %14
  store i1 true, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %30

26:                                               ; preds = %14
  br label %27

27:                                               ; preds = %26
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %8, align 4, !tbaa !9
  br label %10, !llvm.loop !11

30:                                               ; preds = %25, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %31 = load i32, ptr %9, align 4
  switch i32 %31, label %35 [
    i32 2, label %32
    i32 1, label %33
  ]

32:                                               ; preds = %30
  store i1 false, ptr %4, align 1
  br label %33

33:                                               ; preds = %32, %30
  %34 = load i1, ptr %4, align 1
  ret i1 %34

35:                                               ; preds = %30
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ 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 noundef zeroext i1 @_Z9UsedInColPA9_iii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %1 to i64
  %5 = getelementptr inbounds [9 x i32], ptr %0, i64 0, i64 %4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp eq i32 %6, %2
  br i1 %7, label %40, label %8

8:                                                ; preds = %3
  %9 = getelementptr inbounds [9 x i32], ptr %0, i64 1, i64 %4
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = icmp eq i32 %10, %2
  br i1 %11, label %40, label %12

12:                                               ; preds = %8
  %13 = getelementptr inbounds [9 x i32], ptr %0, i64 2, i64 %4
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp eq i32 %14, %2
  br i1 %15, label %40, label %16

16:                                               ; preds = %12
  %17 = getelementptr inbounds [9 x i32], ptr %0, i64 3, i64 %4
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = icmp eq i32 %18, %2
  br i1 %19, label %40, label %20

20:                                               ; preds = %16
  %21 = getelementptr inbounds [9 x i32], ptr %0, i64 4, i64 %4
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = icmp eq i32 %22, %2
  br i1 %23, label %40, label %24

24:                                               ; preds = %20
  %25 = getelementptr inbounds [9 x i32], ptr %0, i64 5, i64 %4
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = icmp eq i32 %26, %2
  br i1 %27, label %40, label %28

28:                                               ; preds = %24
  %29 = getelementptr inbounds [9 x i32], ptr %0, i64 6, i64 %4
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = icmp eq i32 %30, %2
  br i1 %31, label %40, label %32

32:                                               ; preds = %28
  %33 = getelementptr inbounds [9 x i32], ptr %0, i64 7, i64 %4
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = icmp eq i32 %34, %2
  br i1 %35, label %40, label %36

36:                                               ; preds = %32
  %37 = getelementptr inbounds [9 x i32], ptr %0, i64 8, i64 %4
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %39 = icmp eq i32 %38, %2
  br label %40

40:                                               ; preds = %36, %32, %28, %24, %20, %16, %12, %8, %3
  %.lcssa = phi i1 [ true, %3 ], [ true, %8 ], [ true, %12 ], [ true, %16 ], [ true, %20 ], [ true, %24 ], [ true, %28 ], [ true, %32 ], [ %39, %36 ]
  ret i1 %.lcssa
}

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++ TBAA"}


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