; 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 ptr @ponyint_list_find(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %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 = %22, %3
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %26

11:                                               ; preds = %8
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.list_t, ptr %14, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = call zeroext i1 %12(ptr noundef %13, ptr noundef %16)
  br i1 %17, label %18, label %22

18:                                               ; preds = %11
  %19 = load ptr, ptr %5, 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
  store ptr %21, ptr %4, align 8
  br label %27

22:                                               ; preds = %11
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.list_t, ptr %23, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  store ptr %25, ptr %5, align 8, !tbaa !5
  br label %8, !llvm.loop !12

26:                                               ; preds = %8
  store ptr null, ptr %4, align 8
  br label %27

27:                                               ; preds = %26, %18
  %28 = load ptr, ptr %4, align 8
  ret ptr %28
}

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 ptr @ponyint_list_find(ptr noundef readonly %0, ptr nocapture noundef readonly %1, ptr noundef %2) local_unnamed_addr #0 {
  %.not9 = icmp eq ptr %0, null
  br i1 %.not9, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %3, %8
  %.0710 = phi ptr [ %10, %8 ], [ %0, %3 ]
  %4 = load ptr, ptr %.0710, align 8, !tbaa !5
  %5 = tail call zeroext i1 %1(ptr noundef %2, ptr noundef %4) #1
  br i1 %5, label %6, label %8

6:                                                ; preds = %.lr.ph
  %7 = load ptr, ptr %.0710, align 8, !tbaa !5
  br label %.loopexit

8:                                                ; preds = %.lr.ph
  %9 = getelementptr inbounds i8, ptr %.0710, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !10
  %.not = icmp eq ptr %10, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !11

.loopexit:                                        ; preds = %8, %3, %6
  %.0 = phi ptr [ %7, %6 ], [ null, %3 ], [ null, %8 ]
  ret ptr %.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