; LLVM IR from maksimandrianov/cdcontainers :: src (circular-array)

; 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.cdc_circular_array = type { ptr, i64, i64, i64, i64, ptr }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [83 x i8], align 1
@__PRETTY_FUNCTION__.cdc_circular_array_at = external hidden unnamed_addr constant [73 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @cdc_circular_array_at(ptr noundef %0, i64 noundef %1, ptr noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %3
  br label %13

12:                                               ; preds = %3
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 176, ptr noundef @__PRETTY_FUNCTION__.cdc_circular_array_at) #3
  unreachable

13:                                               ; preds = %11
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = icmp ne ptr %14, null
  br i1 %15, label %16, label %17

16:                                               ; preds = %13
  br label %18

17:                                               ; preds = %13
  call void @__assert_fail(ptr noundef @.str.2, ptr noundef @.str.1, i32 noundef 177, ptr noundef @__PRETTY_FUNCTION__.cdc_circular_array_at) #3
  unreachable

18:                                               ; preds = %16
  %19 = load i64, ptr %6, align 8, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.cdc_circular_array, ptr %20, i32 0, i32 3
  %22 = load i64, ptr %21, align 8, !tbaa !11
  %23 = icmp ugt i64 %19, %22
  br i1 %23, label %24, label %25

24:                                               ; preds = %18
  store i32 2, ptr %4, align 4
  br label %36

25:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load i64, ptr %6, align 8, !tbaa !9
  %28 = call i64 @get_real_index(ptr noundef %26, i64 noundef %27)
  store i64 %28, ptr %8, align 8, !tbaa !9
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.cdc_circular_array, ptr %29, i32 0, i32 0
  %31 = load ptr, ptr %30, align 8, !tbaa !13
  %32 = load i64, ptr %8, align 8, !tbaa !9
  %33 = getelementptr inbounds ptr, ptr %31, i64 %32
  %34 = load ptr, ptr %33, align 8, !tbaa !5
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %34, ptr %35, align 8, !tbaa !5
  store i32 0, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  br label %36

36:                                               ; preds = %25, %24
  %37 = load i32, ptr %4, align 4
  ret i32 %37
}

; Function Attrs: nounwind uwtable
declare hidden i64 @get_real_index(ptr noundef, i64 noundef) #2

attributes #0 = { noreturn 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { noreturn nounwind }
attributes #4 = { 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, !10, i64 24}
!12 = !{!"cdc_circular_array", !6, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !6, i64 40}
!13 = !{!12, !6, i64 0}


; 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"

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [83 x i8], align 1
@__PRETTY_FUNCTION__.cdc_circular_array_at = external hidden unnamed_addr constant [73 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 3) i32 @cdc_circular_array_at(ptr noundef %0, i64 noundef %1, ptr noundef writeonly %2) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %4, label %5

4:                                                ; preds = %3
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 176, ptr noundef nonnull @__PRETTY_FUNCTION__.cdc_circular_array_at) #2
  unreachable

5:                                                ; preds = %3
  %.not12 = icmp eq ptr %2, null
  br i1 %.not12, label %6, label %7

6:                                                ; preds = %5
  tail call void @__assert_fail(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.1, i32 noundef 177, ptr noundef nonnull @__PRETTY_FUNCTION__.cdc_circular_array_at) #2
  unreachable

7:                                                ; preds = %5
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  %9 = load i64, ptr %8, align 8, !tbaa !5
  %10 = icmp ult i64 %9, %1
  br i1 %10, label %16, label %11

11:                                               ; preds = %7
  %12 = tail call i64 @get_real_index(ptr noundef nonnull %0, i64 noundef %1)
  %13 = load ptr, ptr %0, align 8, !tbaa !11
  %14 = getelementptr inbounds ptr, ptr %13, i64 %12
  %15 = load ptr, ptr %14, align 8, !tbaa !12
  store ptr %15, ptr %2, align 8, !tbaa !12
  br label %16

16:                                               ; preds = %7, %11
  %.0 = phi i32 [ 0, %11 ], [ 2, %7 ]
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare hidden i64 @get_real_index(ptr noundef, i64 noundef) local_unnamed_addr #1

attributes #0 = { noreturn 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 #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 = { 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, !10, i64 24}
!6 = !{!"cdc_circular_array", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !7, i64 40}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!7, !7, i64 0}


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