; LLVM IR from clausecker/24puzzle :: compact (compare_cp)

; 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.compact_puzzle = type { i64, i64 }

; 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 @compare_cp(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %9, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %10, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.compact_puzzle, ptr %11, i32 0, i32 1
  %13 = load i64, ptr %12, align 8, !tbaa !9
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.compact_puzzle, ptr %14, i32 0, i32 1
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = icmp ne i64 %13, %16
  br i1 %17, label %18, label %36

18:                                               ; preds = %2
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.compact_puzzle, ptr %19, i32 0, i32 1
  %21 = load i64, ptr %20, align 8, !tbaa !9
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.compact_puzzle, ptr %22, i32 0, i32 1
  %24 = load i64, ptr %23, align 8, !tbaa !9
  %25 = icmp ugt i64 %21, %24
  %26 = zext i1 %25 to i32
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.compact_puzzle, ptr %27, i32 0, i32 1
  %29 = load i64, ptr %28, align 8, !tbaa !9
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.compact_puzzle, ptr %30, i32 0, i32 1
  %32 = load i64, ptr %31, align 8, !tbaa !9
  %33 = icmp ult i64 %29, %32
  %34 = zext i1 %33 to i32
  %35 = sub nsw i32 %26, %34
  store i32 %35, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %54

36:                                               ; preds = %2
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.compact_puzzle, ptr %37, i32 0, i32 0
  %39 = load i64, ptr %38, align 8, !tbaa !12
  %40 = load ptr, ptr %7, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.compact_puzzle, ptr %40, i32 0, i32 0
  %42 = load i64, ptr %41, align 8, !tbaa !12
  %43 = icmp ugt i64 %39, %42
  %44 = zext i1 %43 to i32
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.compact_puzzle, ptr %45, i32 0, i32 0
  %47 = load i64, ptr %46, align 8, !tbaa !12
  %48 = load ptr, ptr %7, align 8, !tbaa !5
  %49 = getelementptr inbounds %struct.compact_puzzle, ptr %48, i32 0, i32 0
  %50 = load i64, ptr %49, align 8, !tbaa !12
  %51 = icmp ult i64 %47, %50
  %52 = zext i1 %51 to i32
  %53 = sub nsw i32 %44, %52
  store i32 %53, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %54

54:                                               ; preds = %36, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %55 = load i32, ptr %3, align 4
  ret i32 %55
}

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, !11, i64 8}
!10 = !{!"compact_puzzle", !11, i64 0, !11, i64 8}
!11 = !{!"long long", !7, i64 0}
!12 = !{!10, !11, i64 0}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local range(i32 -1, 2) i32 @compare_cp(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %1, i64 8
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %.not = icmp eq i64 %4, %6
  br i1 %.not, label %10, label %7

7:                                                ; preds = %2
  %8 = icmp ugt i64 %4, %6
  %9 = icmp ult i64 %4, %6
  br label %15

10:                                               ; preds = %2
  %11 = load i64, ptr %0, align 8, !tbaa !10
  %12 = load i64, ptr %1, align 8, !tbaa !10
  %13 = icmp ugt i64 %11, %12
  %14 = icmp ult i64 %11, %12
  br label %15

15:                                               ; preds = %10, %7
  %.sink15 = phi i1 [ %14, %10 ], [ %9, %7 ]
  %.sink.in = phi i1 [ %13, %10 ], [ %8, %7 ]
  %.sink = zext i1 %.sink.in to i32
  %.neg = sext i1 %.sink15 to i32
  %16 = add nsw i32 %.neg, %.sink
  ret i32 %16
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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, !7, i64 8}
!6 = !{!"compact_puzzle", !7, i64 0, !7, i64 8}
!7 = !{!"long long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass