; LLVM IR from AlgoGenesis/C :: Backtracking Algorithms/Hamiltonian Path Problem (Program)

; 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 [13 x i8], align 1

; 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
declare dso_local zeroext i1 @hamiltonianUtil(ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @hamiltonianPath(ptr noundef %0) #1 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca [5 x i32], align 16
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 20, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %15, %1
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = icmp slt i32 %8, 5
  br i1 %9, label %11, label %10

10:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %18

11:                                               ; preds = %7
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [5 x i32], ptr %4, i64 0, i64 %13
  store i32 -1, ptr %14, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %11
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %5, align 4, !tbaa !9
  br label %7, !llvm.loop !11

18:                                               ; preds = %10
  %19 = getelementptr inbounds [5 x i32], ptr %4, i64 0, i64 0
  store i32 0, ptr %19, align 16, !tbaa !9
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds [5 x i32], ptr %4, i64 0, i64 0
  %22 = call zeroext i1 @hamiltonianUtil(ptr noundef %20, ptr noundef %21, i32 noundef 1)
  br i1 %22, label %25, label %23

23:                                               ; preds = %18
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  store i1 false, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %27

25:                                               ; preds = %18
  %26 = getelementptr inbounds [5 x i32], ptr %4, i64 0, i64 0
  call void @printSolution(ptr noundef %26)
  store i1 true, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %27

27:                                               ; preds = %25, %23
  call void @llvm.lifetime.end.p0(i64 20, ptr %4) #3
  %28 = load i1, ptr %2, align 1
  ret i1 %28
}

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

; Function Attrs: nounwind uwtable
declare dso_local void @printSolution(ptr noundef) #1

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 = { "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 = !{!"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"

@.str = external hidden unnamed_addr constant [13 x i8], align 1

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

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

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @hamiltonianUtil(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef zeroext i1 @hamiltonianPath(ptr noundef %0) local_unnamed_addr #1 {
  %2 = alloca [5 x i32], align 16
  call void @llvm.lifetime.start.p0(i64 20, ptr nonnull %2) #4
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(20) %2, i8 -1, i64 20, i1 false), !tbaa !5
  store i32 0, ptr %2, align 16, !tbaa !5
  %3 = call zeroext i1 @hamiltonianUtil(ptr noundef %0, ptr noundef nonnull %2, i32 noundef 1)
  br i1 %3, label %6, label %4

4:                                                ; preds = %1
  %5 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  br label %7

6:                                                ; preds = %1
  call void @printSolution(ptr noundef nonnull %2)
  br label %7

7:                                                ; preds = %6, %4
  call void @llvm.lifetime.end.p0(i64 20, ptr nonnull %2) #4
  ret i1 %3
}

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

; Function Attrs: nounwind uwtable
declare dso_local void @printSolution(ptr noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { mustprogress 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 = { 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 nounwind willreturn memory(argmem: write) }
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"}


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