; LLVM IR from ponylang/ponyc :: src/libponyrt/ds (list)

; 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.list_t = type { ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @ponyint_list_equals(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %24, %3
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %31

11:                                               ; preds = %8
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %23, label %14

14:                                               ; preds = %11
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.list_t, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.list_t, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = call zeroext i1 %15(ptr noundef %18, ptr noundef %21)
  br i1 %22, label %24, label %23

23:                                               ; preds = %14, %11
  store i1 false, ptr %4, align 1
  br label %34

24:                                               ; preds = %14
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.list_t, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !11
  store ptr %27, ptr %5, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.list_t, ptr %28, i32 0, i32 1
  %30 = load ptr, ptr %29, align 8, !tbaa !11
  store ptr %30, ptr %6, align 8, !tbaa !5
  br label %8, !llvm.loop !12

31:                                               ; preds = %8
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = icmp eq ptr %32, null
  store i1 %33, ptr %4, align 1
  br label %34

34:                                               ; preds = %31, %23
  %35 = load i1, ptr %4, align 1
  ret i1 %35
}

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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"list_t", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = distinct !{!12, !13}
!13 = !{!"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 zeroext i1 @ponyint_list_equals(ptr noundef readonly %0, ptr noundef readonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %.not12 = icmp eq ptr %0, null
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %9
  %.0914 = phi ptr [ %13, %9 ], [ %1, %3 ]
  %.01013 = phi ptr [ %11, %9 ], [ %0, %3 ]
  %4 = icmp eq ptr %.0914, null
  br i1 %4, label %.loopexit, label %5

5:                                                ; preds = %.lr.ph
  %6 = load ptr, ptr %.01013, align 8, !tbaa !5
  %7 = load ptr, ptr %.0914, align 8, !tbaa !5
  %8 = tail call zeroext i1 %2(ptr noundef %6, ptr noundef %7) #1
  br i1 %8, label %9, label %.loopexit

9:                                                ; preds = %5
  %10 = getelementptr inbounds i8, ptr %.01013, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !10
  %12 = getelementptr inbounds i8, ptr %.0914, i64 8
  %13 = load ptr, ptr %12, align 8, !tbaa !10
  %.not = icmp eq ptr %11, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %9, %3
  %.09.lcssa = phi ptr [ %1, %3 ], [ %13, %9 ]
  %14 = icmp eq ptr %.09.lcssa, null
  br label %.loopexit

.loopexit:                                        ; preds = %.lr.ph, %5, %._crit_edge
  %.0 = phi i1 [ %14, %._crit_edge ], [ false, %5 ], [ false, %.lr.ph ]
  ret i1 %.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" }
attributes #1 = { 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, !7, i64 0}
!6 = !{!"list_t", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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