; LLVM IR from gem5/gem5 :: ext/libfdt (fdt_rw)

; 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"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden i32 @_fdt_rw_check_header(ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden i32 @_fdt_splice_struct(ptr noundef, ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @fdt_get_property_w(ptr noundef, i32 noundef, ptr noundef, ptr noundef) #2

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

16:                                               ; preds = %3
  %17 = load i32, ptr %11, align 4, !tbaa !9
  store i32 %17, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %19

18:                                               ; preds = %3
  store i32 0, ptr %12, align 4
  br label %19

19:                                               ; preds = %18, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  %20 = load i32, ptr %12, align 4
  switch i32 %20, label %42 [
    i32 0, label %21
  ]

21:                                               ; preds = %19
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load i32, ptr %6, align 4, !tbaa !9
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = call ptr @fdt_get_property_w(ptr noundef %22, i32 noundef %23, ptr noundef %24, ptr noundef %9)
  store ptr %25, ptr %8, align 8, !tbaa !5
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = icmp ne ptr %26, null
  br i1 %27, label %30, label %28

28:                                               ; preds = %21
  %29 = load i32, ptr %9, align 4, !tbaa !9
  store i32 %29, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %42

30:                                               ; preds = %21
  %31 = load i32, ptr %9, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = add i64 %32, 4
  %34 = sub i64 %33, 1
  %35 = and i64 %34, -4
  %36 = add i64 12, %35
  %37 = trunc i64 %36 to i32
  store i32 %37, ptr %10, align 4, !tbaa !9
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  %39 = load ptr, ptr %8, align 8, !tbaa !5
  %40 = load i32, ptr %10, align 4, !tbaa !9
  %41 = call i32 @_fdt_splice_struct(ptr noundef %38, ptr noundef %39, i32 noundef %40, i32 noundef 0)
  store i32 %41, ptr %4, align 4
  store i32 1, ptr %12, align 4
  br label %42

42:                                               ; preds = %30, %28, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %43 = load i32, ptr %4, align 4
  ret i32 %43
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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 }

!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}


; 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden i32 @_fdt_rw_check_header(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare hidden i32 @_fdt_splice_struct(ptr noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @fdt_get_property_w(ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local i32 @fdt_delprop(ptr noundef %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #1 {
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  %5 = tail call i32 @_fdt_rw_check_header(ptr noundef %0)
  %.not = icmp eq i32 %5, 0
  br i1 %.not, label %6, label %14

6:                                                ; preds = %3
  %7 = call ptr @fdt_get_property_w(ptr noundef %0, i32 noundef %1, ptr noundef %2, ptr noundef nonnull %4)
  %.not12 = icmp eq ptr %7, null
  %8 = load i32, ptr %4, align 4, !tbaa !5
  br i1 %.not12, label %14, label %9

9:                                                ; preds = %6
  %10 = add i32 %8, 3
  %11 = and i32 %10, -4
  %12 = add i32 %11, 12
  %13 = call i32 @_fdt_splice_struct(ptr noundef %0, ptr noundef nonnull %7, i32 noundef %12, i32 noundef 0)
  br label %14

14:                                               ; preds = %6, %3, %9
  %.1 = phi i32 [ %13, %9 ], [ %5, %3 ], [ %8, %6 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  ret i32 %.1
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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 }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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