; LLVM IR from Muhammad-Magdi/problem-solving :: Backtracking/750 - 8 Queens Chess Problem.ll (Z13printSolutionv)

; 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"

@sols = external dso_local global i32, align 4
@ans = external dso_local global [10 x i32], align 16
@.str = external hidden unnamed_addr constant [2 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z13printSolutionv() #0 {
  %1 = alloca i32, align 4
  %2 = load i32, ptr @sols, align 4, !tbaa !5
  %3 = add nsw i32 %2, 1
  store i32 %3, ptr @sols, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 10
  br i1 %4, label %5, label %7

5:                                                ; preds = %0
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  br label %7

7:                                                ; preds = %5, %0
  %8 = load i32, ptr @sols, align 4, !tbaa !5
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %8)
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  store i32 1, ptr %1, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %20, %7
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = icmp slt i32 %11, 9
  br i1 %12, label %14, label %13

13:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  br label %23

14:                                               ; preds = %10
  %15 = load i32, ptr %1, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [10 x i32], ptr @ans, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %18)
  br label %20

20:                                               ; preds = %14
  %21 = load i32, ptr %1, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %1, align 4, !tbaa !5
  br label %10, !llvm.loop !9

23:                                               ; preds = %13
  %24 = call i32 @puts(ptr noundef @.str.3)
  ret void
}

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

declare i32 @puts(ptr noundef) #1

attributes #0 = { mustprogress 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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@sols = external dso_local local_unnamed_addr global i32, align 4
@ans = external dso_local local_unnamed_addr global [10 x i32], align 16
@.str = external hidden unnamed_addr constant [2 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z13printSolutionv() local_unnamed_addr #0 {
  %1 = load i32, ptr @sols, align 4, !tbaa !5
  %2 = add nsw i32 %1, 1
  store i32 %2, ptr @sols, align 4, !tbaa !5
  %3 = icmp slt i32 %1, 9
  br i1 %3, label %4, label %6

4:                                                ; preds = %0
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %.pre = load i32, ptr @sols, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %4, %0
  %7 = phi i32 [ %.pre, %4 ], [ %2, %0 ]
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %7)
  %9 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 4), align 4, !tbaa !5
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %9)
  %11 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 8), align 8, !tbaa !5
  %12 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %11)
  %13 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 12), align 4, !tbaa !5
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %13)
  %15 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 16), align 16, !tbaa !5
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %15)
  %17 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 20), align 4, !tbaa !5
  %18 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %17)
  %19 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 24), align 8, !tbaa !5
  %20 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %19)
  %21 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 28), align 4, !tbaa !5
  %22 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %21)
  %23 = load i32, ptr getelementptr inbounds (i8, ptr @ans, i64 32), align 16, !tbaa !5
  %24 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %23)
  %25 = tail call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.3)
  ret void
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) local_unnamed_addr #1

attributes #0 = { mustprogress 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 = { 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" }

!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: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass