; LLVM IR from xuxping/codelife :: algorthms/queue (maze)

; 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"

%struct.Queue = type { ptr, i32, i32, i32 }
%struct.Box = type { i32, i32, i32 }

@.str.5 = external hidden unnamed_addr constant [16 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @displayPath(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load i32, ptr %4, align 4, !tbaa !9
  %6 = icmp ne i32 %5, -1
  br i1 %6, label %7, label %34

7:                                                ; preds = %2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.Queue, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds %struct.Box, ptr %10, i64 %12
  %14 = getelementptr inbounds %struct.Box, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 4, !tbaa !13
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.Queue, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !11
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds %struct.Box, ptr %18, i64 %20
  %22 = getelementptr inbounds %struct.Box, ptr %21, i32 0, i32 1
  %23 = load i32, ptr %22, align 4, !tbaa !15
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, i32 noundef %15, i32 noundef %23)
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.Queue, ptr %26, i32 0, i32 0
  %28 = load ptr, ptr %27, align 8, !tbaa !11
  %29 = load i32, ptr %4, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds %struct.Box, ptr %28, i64 %30
  %32 = getelementptr inbounds %struct.Box, ptr %31, i32 0, i32 2
  %33 = load i32, ptr %32, align 4, !tbaa !16
  call void @displayPath(ptr noundef %25, i32 noundef %33)
  br label %34

34:                                               ; preds = %7, %2
  ret void
}

attributes #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 = { 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" }

!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 = !{!12, !6, i64 0}
!12 = !{!"Queue", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!13 = !{!14, !10, i64 0}
!14 = !{!"Box", !10, i64 0, !10, i64 4, !10, i64 8}
!15 = !{!14, !10, i64 4}
!16 = !{!14, !10, i64 8}


; 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"

%struct.Box = type { i32, i32, i32 }

@.str.5 = external hidden unnamed_addr constant [16 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local void @displayPath(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #1 {
  %.not8 = icmp eq i32 %1, -1
  br i1 %.not8, label %tailrecurse._crit_edge, label %tailrecurse.preheader

tailrecurse.preheader:                            ; preds = %2
  %.pre = load ptr, ptr %0, align 8, !tbaa !5
  br label %tailrecurse

tailrecurse:                                      ; preds = %tailrecurse.preheader, %tailrecurse
  %3 = phi ptr [ %10, %tailrecurse ], [ %.pre, %tailrecurse.preheader ]
  %.tr79 = phi i32 [ %12, %tailrecurse ], [ %1, %tailrecurse.preheader ]
  %4 = sext i32 %.tr79 to i64
  %5 = getelementptr inbounds %struct.Box, ptr %3, i64 %4
  %6 = load i32, ptr %5, align 4, !tbaa !11
  %7 = getelementptr inbounds i8, ptr %5, i64 4
  %8 = load i32, ptr %7, align 4, !tbaa !13
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, i32 noundef %6, i32 noundef %8)
  %10 = load ptr, ptr %0, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.Box, ptr %10, i64 %4, i32 2
  %12 = load i32, ptr %11, align 4, !tbaa !14
  %.not = icmp eq i32 %12, -1
  br i1 %.not, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %2
  ret void
}

attributes #0 = { 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 #1 = { 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" }

!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, !7, i64 0}
!6 = !{!"Queue", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"Box", !10, i64 0, !10, i64 4, !10, i64 8}
!13 = !{!12, !10, i64 4}
!14 = !{!12, !10, i64 8}


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