; LLVM IR from DevonCrawford/A-Pathfinding-in-C-command-line :: backups (pathfinding_copy)

; 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.GridSize = type { i32, i32 }
%struct.Node = type { ptr, i32, i32, i32, i32, i32, i32, i32 }

@size = external dso_local global %struct.GridSize, align 4

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
declare dso_local void @addListNode(ptr noundef, ptr noundef, ptr noundef byval(%struct.Node) align 8) #1

; Function Attrs: nounwind uwtable
define dso_local void @connectPath(ptr noundef %0, ptr noundef %1, ptr noundef byval(%struct.Node) align 8 %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %6 = load i32, ptr @size, align 4, !tbaa !9
  %7 = zext i32 %6 to i64
  br label %8

8:                                                ; preds = %12, %3
  %9 = getelementptr inbounds %struct.Node, ptr %2, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !12
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %17

12:                                               ; preds = %8
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  call void @addListNode(ptr noundef %13, ptr noundef %14, ptr noundef byval(%struct.Node) align 8 %2)
  %15 = getelementptr inbounds %struct.Node, ptr %2, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %2, ptr align 8 %16, i64 40, i1 false), !tbaa.struct !14
  br label %8, !llvm.loop !16

17:                                               ; preds = %8
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load i32, ptr %19, align 4, !tbaa !15
  call void @reverseID(ptr noundef %18, i32 noundef %20)
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @reverseID(ptr noundef, i32 noundef) #1

attributes #0 = { nocallback nofree 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" }

!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, !11, i64 0}
!10 = !{!"GridSize", !11, i64 0, !11, i64 4}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !6, i64 0}
!13 = !{!"Node", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !11, i64 28, !11, i64 32}
!14 = !{i64 0, i64 8, !5, i64 8, i64 4, !15, i64 12, i64 4, !15, i64 16, i64 4, !15, i64 20, i64 4, !15, i64 24, i64 4, !15, i64 28, i64 4, !15, i64 32, i64 4, !15}
!15 = !{!11, !11, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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"

%struct.Node = type { ptr, i32, i32, i32, i32, i32, i32, i32 }

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
declare dso_local void @addListNode(ptr noundef, ptr noundef, ptr noundef byval(%struct.Node) align 8) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @connectPath(ptr noundef %0, ptr noundef %1, ptr noundef byval(%struct.Node) align 8 %2) local_unnamed_addr #1 {
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %.not4 = icmp eq ptr %4, null
  br i1 %.not4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %.lr.ph
  tail call void @addListNode(ptr noundef %0, ptr noundef %1, ptr noundef nonnull byval(%struct.Node) align 8 %2)
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %2, ptr noundef nonnull align 8 dereferenceable(40) %5, i64 40, i1 false), !tbaa.struct !11
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %6, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %3
  %7 = load i32, ptr %1, align 4, !tbaa !13
  tail call void @reverseID(ptr noundef %0, i32 noundef %7)
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @reverseID(ptr noundef, i32 noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree 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" }

!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 = !{!"Node", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{i64 0, i64 8, !12, i64 8, i64 4, !13, i64 12, i64 4, !13, i64 16, i64 4, !13, i64 20, i64 4, !13, i64 24, i64 4, !13, i64 28, i64 4, !13, i64 32, i64 4, !13}
!12 = !{!7, !7, i64 0}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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