; LLVM IR from ctlst-tech/catpilot :: os/fatfs/fsa (stdio)

; 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.node = type { [64 x i8], %struct.file_operations, ptr, ptr, ptr }
%struct.file_operations = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
%struct.file = type { i32, ptr, ptr }

@files = external dso_local global [32 x ptr], align 16
@.str.53 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.54 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.55 = external hidden unnamed_addr constant [7 x i8], align 1
@null_node = external global %struct.node, align 8

; 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: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @std_stream_deinit(ptr noundef %0) #2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call i32 @strcmp(ptr noundef %6, ptr noundef @.str.53) #4
  %8 = icmp ne i32 %7, 0
  br i1 %8, label %10, label %9

9:                                                ; preds = %1
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %23

10:                                               ; preds = %1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = call i32 @strcmp(ptr noundef %11, ptr noundef @.str.54) #4
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 1, ptr %4, align 4, !tbaa !9
  br label %22

15:                                               ; preds = %10
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = call i32 @strcmp(ptr noundef %16, ptr noundef @.str.55) #4
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  store i32 2, ptr %4, align 4, !tbaa !9
  br label %21

20:                                               ; preds = %15
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %36

21:                                               ; preds = %19
  br label %22

22:                                               ; preds = %21, %14
  br label %23

23:                                               ; preds = %22, %9
  %24 = load i32, ptr %4, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [32 x ptr], ptr @files, i64 0, i64 %25
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  %28 = icmp eq ptr %27, null
  br i1 %28, label %29, label %30

29:                                               ; preds = %23
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %36

30:                                               ; preds = %23
  %31 = load i32, ptr %4, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [32 x ptr], ptr @files, i64 0, i64 %32
  %34 = load ptr, ptr %33, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.file, ptr %34, i32 0, i32 1
  store ptr @null_node, ptr %35, align 8, !tbaa !11
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %36

36:                                               ; preds = %30, %29, %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %37 = load i32, ptr %2, align 4
  ret i32 %37
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(read) "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 = { nounwind willreturn memory(read) }

!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 8}
!12 = !{!"file", !10, i64 0, !6, i64 8, !6, i64 16}


; 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"

%struct.node = type { [64 x i8], %struct.file_operations, ptr, ptr, ptr }
%struct.file_operations = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }

@files = external dso_local local_unnamed_addr global [32 x ptr], align 16
@.str.53 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.54 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.55 = external hidden unnamed_addr constant [7 x i8], align 1
@null_node = external global %struct.node, align 8

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(readwrite, inaccessiblemem: none) uwtable
define dso_local range(i32 -1, 1) i32 @std_stream_deinit(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) @.str.53) #2
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %7, label %3

3:                                                ; preds = %1
  %4 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) @.str.54) #2
  %.not7 = icmp eq i32 %4, 0
  br i1 %.not7, label %7, label %5

5:                                                ; preds = %3
  %6 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) @.str.55) #2
  %.not8 = icmp eq i32 %6, 0
  br i1 %.not8, label %7, label %13

7:                                                ; preds = %5, %3, %1
  %.0 = phi i64 [ 0, %1 ], [ 1, %3 ], [ 2, %5 ]
  %8 = getelementptr inbounds [32 x ptr], ptr @files, i64 0, i64 %.0
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %13, label %11

11:                                               ; preds = %7
  %12 = getelementptr inbounds i8, ptr %9, i64 8
  store ptr @null_node, ptr %12, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %7, %5, %11
  %.05 = phi i32 [ 0, %11 ], [ -1, %5 ], [ -1, %7 ]
  ret i32 %.05
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { mustprogress nofree nounwind willreturn memory(readwrite, inaccessiblemem: none) 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 = { nounwind willreturn memory(read) }

!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 = !{!"file", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}


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