; LLVM IR from ryanlayer/giggle :: src (ll)

; 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.long_ll = type { i64, ptr, ptr }
%struct.long_ll_node = type { i64, ptr }

; 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 i64 @long_ll_contains(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i64 0, ptr %3, align 8
  br label %33

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 0, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.long_ll, ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !11
  store ptr %14, ptr %7, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %27, %11
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = icmp ne ptr %16, null
  br i1 %17, label %18, label %31

18:                                               ; preds = %15
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.long_ll_node, ptr %19, i32 0, i32 0
  %21 = load i64, ptr %20, align 8, !tbaa !13
  %22 = load i64, ptr %5, align 8, !tbaa !9
  %23 = icmp eq i64 %21, %22
  br i1 %23, label %24, label %27

24:                                               ; preds = %18
  %25 = load i64, ptr %6, align 8, !tbaa !9
  %26 = add i64 %25, 1
  store i64 %26, ptr %6, align 8, !tbaa !9
  br label %27

27:                                               ; preds = %24, %18
  %28 = load ptr, ptr %7, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.long_ll_node, ptr %28, i32 0, i32 1
  %30 = load ptr, ptr %29, align 8, !tbaa !15
  store ptr %30, ptr %7, align 8, !tbaa !5
  br label %15, !llvm.loop !16

31:                                               ; preds = %15
  %32 = load i64, ptr %6, align 8, !tbaa !9
  store i64 %32, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %33

33:                                               ; preds = %31, %10
  %34 = load i64, ptr %3, align 8
  ret i64 %34
}

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 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"long_ll", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!14, !10, i64 0}
!14 = !{!"long_ll_node", !10, i64 0, !6, i64 8}
!15 = !{!14, !6, i64 8}
!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"

; Function Attrs: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local i64 @long_ll_contains(ptr noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %.0.in11 = getelementptr inbounds i8, ptr %0, i64 8
  %.012 = load ptr, ptr %.0.in11, align 8, !tbaa !5
  %.not13 = icmp eq ptr %.012, null
  br i1 %.not13, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.015 = phi ptr [ %.0, %.lr.ph ], [ %.012, %.preheader ]
  %.0814 = phi i64 [ %spec.select, %.lr.ph ], [ 0, %.preheader ]
  %4 = load i64, ptr %.015, align 8, !tbaa !9
  %5 = icmp eq i64 %4, %1
  %6 = zext i1 %5 to i64
  %spec.select = add i64 %.0814, %6
  %.0.in = getelementptr inbounds i8, ptr %.015, i64 8
  %.0 = load ptr, ptr %.0.in, align 8, !tbaa !5
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !12

.loopexit:                                        ; preds = %.lr.ph, %.preheader, %2
  %.09 = phi i64 [ 0, %2 ], [ 0, %.preheader ], [ %spec.select, %.lr.ph ]
  ret i64 %.09
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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 = !{!"long_ll_node", !11, i64 0, !6, i64 8}
!11 = !{!"long", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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