; LLVM IR from AlgoGenesis/C :: Backtracking Algorithms/Chess-In-Terminal/src (main)

; 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 @has_path(ptr noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %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
  %10 = 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
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [64 x i32], ptr %11, i64 %13
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [64 x i32], ptr %14, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %29

20:                                               ; preds = %3
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [64 x i32], ptr %21, i64 %23
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [64 x i32], ptr %24, i64 0, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !9
  store i32 %28, ptr %4, align 4
  br label %64

29:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %30

30:                                               ; preds = %58, %29
  %31 = load i32, ptr %8, align 4, !tbaa !9
  %32 = icmp slt i32 %31, 64
  br i1 %32, label %34, label %33

33:                                               ; preds = %30
  store i32 2, ptr %9, align 4
  br label %61

34:                                               ; preds = %30
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = load i32, ptr %6, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [64 x i32], ptr %35, i64 %37
  %39 = load i32, ptr %8, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [64 x i32], ptr %38, i64 0, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !9
  %43 = icmp ne i32 %42, 0
  br i1 %43, label %44, label %57

44:                                               ; preds = %34
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  %46 = load i32, ptr %8, align 4, !tbaa !9
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = call i32 @has_path(ptr noundef %45, i32 noundef %46, i32 noundef %47)
  store i32 %48, ptr %10, align 4, !tbaa !9
  %49 = load i32, ptr %10, align 4, !tbaa !9
  %50 = icmp ne i32 %49, 0
  br i1 %50, label %51, label %53

51:                                               ; preds = %44
  %52 = load i32, ptr %10, align 4, !tbaa !9
  store i32 %52, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %54

53:                                               ; preds = %44
  store i32 0, ptr %9, align 4
  br label %54

54:                                               ; preds = %53, %51
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  %55 = load i32, ptr %9, align 4
  switch i32 %55, label %61 [
    i32 0, label %56
  ]

56:                                               ; preds = %54
  br label %57

57:                                               ; preds = %56, %34
  br label %58

58:                                               ; preds = %57
  %59 = load i32, ptr %8, align 4, !tbaa !9
  %60 = add nsw i32 %59, 1
  store i32 %60, ptr %8, align 4, !tbaa !9
  br label %30, !llvm.loop !11

61:                                               ; preds = %54, %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %62 = load i32, ptr %9, align 4
  switch i32 %62, label %66 [
    i32 2, label %63
    i32 1, label %64
  ]

63:                                               ; preds = %61
  store i32 0, ptr %4, align 4
  br label %64

64:                                               ; preds = %63, %61, %20
  %65 = load i32, ptr %4, align 4
  ret i32 %65

66:                                               ; preds = %61
  unreachable
}

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: nofree nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @has_path(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %1 to i64
  %5 = sext i32 %2 to i64
  %6 = getelementptr inbounds [64 x i32], ptr %0, i64 %4, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %3, %13
  %indvars.iv = phi i64 [ %indvars.iv.next, %13 ], [ 0, %3 ]
  %8 = getelementptr inbounds [64 x i32], ptr %0, i64 %4, i64 %indvars.iv
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %.not23 = icmp eq i32 %9, 0
  br i1 %.not23, label %13, label %10

10:                                               ; preds = %.preheader
  %11 = trunc nuw nsw i64 %indvars.iv to i32
  %12 = tail call i32 @has_path(ptr noundef nonnull %0, i32 noundef %11, i32 noundef %2)
  %.not24 = icmp eq i32 %12, 0
  br i1 %.not24, label %13, label %.loopexit

13:                                               ; preds = %.preheader, %10
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 64
  br i1 %exitcond, label %.loopexit, label %.preheader, !llvm.loop !9

.loopexit:                                        ; preds = %10, %13, %3
  %.4 = phi i32 [ %7, %3 ], [ 0, %13 ], [ %12, %10 ]
  ret i32 %.4
}

attributes #0 = { nofree nosync nounwind 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass