; 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.uint64_t_ll_bpt_leading_data = type { ptr }
%struct.uint64_t_ll = type { i64, ptr, ptr }
%struct.uint64_t_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 void @uint64_t_ll_leading_union_with_B(i32 noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %8 = load ptr, ptr %6, align 8, !tbaa !9
  %9 = getelementptr inbounds %struct.uint64_t_ll_bpt_leading_data, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = getelementptr inbounds %struct.uint64_t_ll, ptr %10, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !13
  store ptr %12, ptr %7, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %16, %3
  %14 = load ptr, ptr %7, align 8, !tbaa !9
  %15 = icmp ne ptr %14, null
  br i1 %15, label %16, label %24

16:                                               ; preds = %13
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = load ptr, ptr %7, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.uint64_t_ll_node, ptr %18, i32 0, i32 0
  %20 = load i64, ptr %19, align 8, !tbaa !16
  call void @uint64_t_ll_uniq_append(ptr noundef %17, i64 noundef %20)
  %21 = load ptr, ptr %7, align 8, !tbaa !9
  %22 = getelementptr inbounds %struct.uint64_t_ll_node, ptr %21, i32 0, i32 1
  %23 = load ptr, ptr %22, align 8, !tbaa !18
  store ptr %23, ptr %7, align 8, !tbaa !9
  br label %13, !llvm.loop !19

24:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @uint64_t_ll_uniq_append(ptr noundef, i64 noundef) #1

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"uint64_t_ll_bpt_leading_data", !10, i64 0}
!13 = !{!14, !10, i64 8}
!14 = !{!"uint64_t_ll", !15, i64 0, !10, i64 8, !10, i64 16}
!15 = !{!"long", !7, i64 0}
!16 = !{!17, !15, i64 0}
!17 = !{!"uint64_t_ll_node", !15, i64 0, !10, i64 8}
!18 = !{!17, !10, i64 8}
!19 = distinct !{!19, !20}
!20 = !{!"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: nounwind uwtable
define dso_local void @uint64_t_ll_leading_union_with_B(i32 noundef %0, ptr noundef %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %.0.in5 = getelementptr inbounds i8, ptr %4, i64 8
  %.06 = load ptr, ptr %.0.in5, align 8, !tbaa !10
  %.not7 = icmp eq ptr %.06, null
  br i1 %.not7, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.08 = phi ptr [ %.0, %.lr.ph ], [ %.06, %3 ]
  %5 = load i64, ptr %.08, align 8, !tbaa !11
  tail call void @uint64_t_ll_uniq_append(ptr noundef %1, i64 noundef %5)
  %.0.in = getelementptr inbounds i8, ptr %.08, i64 8
  %.0 = load ptr, ptr %.0.in, align 8, !tbaa !10
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @uint64_t_ll_uniq_append(ptr noundef, i64 noundef) local_unnamed_addr #0

attributes #0 = { 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 = !{!"uint64_t_ll_bpt_leading_data", !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!7, !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"uint64_t_ll_node", !13, i64 0, !7, i64 8}
!13 = !{!"long", !8, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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