; LLVM IR from littlefs-project/littlefs :: bd (lfs_emubd)

; 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.lfs_config = type { ptr, ptr, ptr, ptr, ptr, i32, i32, i32, i32, i32, i32, i32, i32, ptr, ptr, ptr, i32, i32, i32, i32, i32 }
%struct.lfs_emubd = type { ptr, i64, i64, i64, i32, i32, ptr, ptr, ptr }
%struct.lfs_emubd_config = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, ptr, ptr, i8, ptr, i64, i64, i64 }
%struct.lfs_emubd_block = type { i32, i32, [0 x i8] }

@.str = external hidden unnamed_addr constant [29 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [74 x i8], align 1
@__PRETTY_FUNCTION__.lfs_emubd_wear = external hidden unnamed_addr constant [73 x i8], align 1

; 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: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @lfs_emubd_wear(ptr noundef %0, i32 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.lfs_config, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  store ptr %10, ptr %5, align 8, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.lfs_emubd, ptr %12, i32 0, i32 8
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %15 = getelementptr inbounds %struct.lfs_emubd_config, ptr %14, i32 0, i32 3
  %16 = load i32, ptr %15, align 4, !tbaa !16
  %17 = icmp ult i32 %11, %16
  br i1 %17, label %18, label %19

18:                                               ; preds = %2
  br label %20

19:                                               ; preds = %2
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 651, ptr noundef @__PRETTY_FUNCTION__.lfs_emubd_wear) #4
  unreachable

20:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.lfs_emubd, ptr %21, i32 0, i32 0
  %23 = load ptr, ptr %22, align 8, !tbaa !19
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = zext i32 %24 to i64
  %26 = getelementptr inbounds ptr, ptr %23, i64 %25
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  store ptr %27, ptr %7, align 8, !tbaa !5
  %28 = load ptr, ptr %7, align 8, !tbaa !5
  %29 = icmp ne ptr %28, null
  br i1 %29, label %30, label %34

30:                                               ; preds = %20
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.lfs_emubd_block, ptr %31, i32 0, i32 1
  %33 = load i32, ptr %32, align 4, !tbaa !9
  store i32 %33, ptr %6, align 4, !tbaa !9
  br label %35

34:                                               ; preds = %20
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %35

35:                                               ; preds = %34, %30
  %36 = load i32, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret i32 %36
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { nounwind }
attributes #4 = { 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, !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 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"lfs_config", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !10, i64 40, !10, i64 44, !10, i64 48, !10, i64 52, !10, i64 56, !10, i64 60, !10, i64 64, !10, i64 68, !6, i64 72, !6, i64 80, !6, i64 88, !10, i64 96, !10, i64 100, !10, i64 104, !10, i64 108, !10, i64 112}
!13 = !{!14, !6, i64 56}
!14 = !{!"lfs_emubd", !6, i64 0, !15, i64 8, !15, i64 16, !15, i64 24, !10, i64 32, !10, i64 36, !6, i64 40, !6, i64 48, !6, i64 56}
!15 = !{!"long", !7, i64 0}
!16 = !{!17, !10, i64 12}
!17 = !{!"lfs_emubd_config", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32, !6, i64 40, !6, i64 48, !18, i64 56, !6, i64 64, !15, i64 72, !15, i64 80, !15, i64 88}
!18 = !{!"_Bool", !7, i64 0}
!19 = !{!14, !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 [29 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [74 x i8], align 1
@__PRETTY_FUNCTION__.lfs_emubd_wear = external hidden unnamed_addr constant [73 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 i32 @lfs_emubd_wear(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 56
  %5 = load ptr, ptr %4, align 8, !tbaa !11
  %6 = getelementptr inbounds i8, ptr %5, i64 12
  %7 = load i32, ptr %6, align 4, !tbaa !14
  %8 = icmp ugt i32 %7, %1
  br i1 %8, label %10, label %9

9:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 651, ptr noundef nonnull @__PRETTY_FUNCTION__.lfs_emubd_wear) #2
  unreachable

10:                                               ; preds = %2
  %11 = load ptr, ptr %3, align 8, !tbaa !17
  %12 = zext i32 %1 to i64
  %13 = getelementptr inbounds ptr, ptr %11, i64 %12
  %14 = load ptr, ptr %13, align 8, !tbaa !18
  %.not = icmp eq ptr %14, null
  br i1 %.not, label %18, label %15

15:                                               ; preds = %10
  %16 = getelementptr inbounds i8, ptr %14, i64 4
  %17 = load i32, ptr %16, align 4, !tbaa !19
  br label %18

18:                                               ; preds = %10, %15
  %.0 = phi i32 [ %17, %15 ], [ 0, %10 ]
  ret i32 %.0
}

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, !7, i64 0}
!6 = !{!"lfs_config", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !10, i64 40, !10, i64 44, !10, i64 48, !10, i64 52, !10, i64 56, !10, i64 60, !10, i64 64, !10, i64 68, !7, i64 72, !7, i64 80, !7, i64 88, !10, i64 96, !10, i64 100, !10, i64 104, !10, i64 108, !10, i64 112}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!12, !7, i64 56}
!12 = !{!"lfs_emubd", !7, i64 0, !13, i64 8, !13, i64 16, !13, i64 24, !10, i64 32, !10, i64 36, !7, i64 40, !7, i64 48, !7, i64 56}
!13 = !{!"long", !8, i64 0}
!14 = !{!15, !10, i64 12}
!15 = !{!"lfs_emubd_config", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32, !7, i64 40, !7, i64 48, !16, i64 56, !7, i64 64, !13, i64 72, !13, i64 80, !13, i64 88}
!16 = !{!"_Bool", !8, i64 0}
!17 = !{!12, !7, i64 0}
!18 = !{!7, !7, i64 0}
!19 = !{!10, !10, i64 0}


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