; LLVM IR from godzilla-foundation/godzilla-community :: core/deps/nanomsg-1.1.5/src/utils (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.nn_list = type { ptr, ptr }
%struct.nn_list_item = type { ptr, ptr }

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [30 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [113 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [30 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(none)
declare i64 @llvm.expect.i64(i64, i64) #0

declare void @nn_backtrace_print() #1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

declare i32 @fflush(ptr noundef) #1

; Function Attrs: noreturn
declare void @nn_err_abort() #3

; Function Attrs: nounwind uwtable
define dso_local ptr @nn_list_prev(ptr noundef %0, ptr noundef %1) #4 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %12, label %8

8:                                                ; preds = %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.nn_list, ptr %9, i32 0, i32 1
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  store ptr %11, ptr %3, align 8
  br label %33

12:                                               ; preds = %2
  br label %13

13:                                               ; preds = %12
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.nn_list_item, ptr %14, i32 0, i32 1
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = icmp ne ptr %16, inttoptr (i64 -1 to ptr)
  %18 = xor i1 %17, true
  %19 = zext i1 %18 to i32
  %20 = sext i32 %19 to i64
  %21 = call i64 @llvm.expect.i64(i64 %20, i64 0)
  %22 = icmp ne i64 %21, 0
  br i1 %22, label %23, label %28

23:                                               ; preds = %13
  call void @nn_backtrace_print()
  %24 = load ptr, ptr @stderr, align 8, !tbaa !5
  %25 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %24, ptr noundef @.str, ptr noundef @.str.4, ptr noundef @.str.2, i32 noundef 61) #5
  %26 = load ptr, ptr @stderr, align 8, !tbaa !5
  %27 = call i32 @fflush(ptr noundef %26)
  call void @nn_err_abort() #6
  unreachable

28:                                               ; preds = %13
  br label %29

29:                                               ; preds = %28
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.nn_list_item, ptr %30, i32 0, i32 1
  %32 = load ptr, ptr %31, align 8, !tbaa !11
  store ptr %32, ptr %3, align 8
  br label %33

33:                                               ; preds = %29, %8
  %34 = load ptr, ptr %3, align 8
  ret ptr %34
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(none) }
attributes #1 = { "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 "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 #3 = { noreturn "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 #4 = { 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 #5 = { nounwind }
attributes #6 = { noreturn }

!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 8}
!10 = !{!"nn_list", !6, i64 0, !6, i64 8}
!11 = !{!12, !6, i64 8}
!12 = !{!"nn_list_item", !6, i64 0, !6, i64 8}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [30 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [113 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [30 x i8], align 1

declare void @nn_backtrace_print() local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fflush(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: noreturn
declare void @nn_err_abort() local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local ptr @nn_list_prev(ptr nocapture noundef readonly %0, ptr noundef readonly %1) local_unnamed_addr #3 {
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %3, label %6

3:                                                ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  br label %14

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !10
  %.not6 = icmp eq ptr %8, inttoptr (i64 -1 to ptr)
  br i1 %.not6, label %9, label %14, !prof !12

9:                                                ; preds = %6
  tail call void @nn_backtrace_print() #4
  %10 = load ptr, ptr @stderr, align 8, !tbaa !13
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str, ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.2, i32 noundef 61) #5
  %12 = load ptr, ptr @stderr, align 8, !tbaa !13
  %13 = tail call i32 @fflush(ptr noundef %12)
  tail call void @nn_err_abort() #6
  unreachable

14:                                               ; preds = %6, %3
  %.0 = phi ptr [ %5, %3 ], [ %8, %6 ]
  ret ptr %.0
}

attributes #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 = { nofree nounwind "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 = { noreturn "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 #3 = { 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 #4 = { nounwind }
attributes #5 = { cold nounwind }
attributes #6 = { noreturn 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 8}
!6 = !{!"nn_list", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !7, i64 8}
!11 = !{!"nn_list_item", !7, i64 0, !7, i64 8}
!12 = !{!"branch_weights", !"expected", i32 1, i32 2000}
!13 = !{!7, !7, i64 0}


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