; LLVM IR from clangen/musikcube :: src/3rdparty/win32_src/pdcurses (scr_dump)

; 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"

@curscr = external global ptr, align 8
@.str.4 = external hidden unnamed_addr constant [3 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: nounwind uwtable
declare dso_local ptr @getwin(ptr noundef) #1

declare i32 @delwin(ptr noundef) #2

declare noalias ptr @fopen(ptr noundef, ptr noundef) #2

declare i32 @fclose(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @scr_restore(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %32

10:                                               ; preds = %1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = call noalias ptr @fopen(ptr noundef %11, ptr noundef @.str.4)
  store ptr %12, ptr %4, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %32

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = call ptr @getwin(ptr noundef %15)
  store ptr %16, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = call i32 @fclose(ptr noundef %17)
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = icmp ne ptr %19, null
  br i1 %20, label %21, label %28

21:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load ptr, ptr @curscr, align 8, !tbaa !5
  %24 = call i32 @overwrite(ptr noundef %22, ptr noundef %23)
  store i32 %24, ptr %6, align 4, !tbaa !9
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = call i32 @delwin(ptr noundef %25)
  %27 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %27, ptr %2, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %29

28:                                               ; preds = %14
  store i32 0, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  %30 = load i32, ptr %7, align 4
  switch i32 %30, label %33 [
    i32 0, label %31
  ]

31:                                               ; preds = %29
  br label %32

32:                                               ; preds = %31, %10, %1
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %7, align 4
  br label %33

33:                                               ; preds = %32, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %34 = load i32, ptr %2, align 4
  ret i32 %34
}

declare i32 @overwrite(ptr noundef, ptr noundef) #2

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 = { "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"

@curscr = external local_unnamed_addr global ptr, align 8
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local ptr @getwin(ptr noundef) local_unnamed_addr #0

declare i32 @delwin(ptr noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local i32 @scr_restore(ptr noundef readonly %0) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.thread, label %2

2:                                                ; preds = %1
  %3 = tail call noalias ptr @fopen(ptr noundef nonnull %0, ptr noundef nonnull @.str.4)
  %.not13 = icmp eq ptr %3, null
  br i1 %.not13, label %.thread, label %4

4:                                                ; preds = %2
  %5 = tail call ptr @getwin(ptr noundef nonnull %3)
  %6 = tail call i32 @fclose(ptr noundef nonnull %3)
  %.not14 = icmp eq ptr %5, null
  br i1 %.not14, label %.thread, label %7

7:                                                ; preds = %4
  %8 = load ptr, ptr @curscr, align 8, !tbaa !5
  %9 = tail call i32 @overwrite(ptr noundef nonnull %5, ptr noundef %8) #3
  %10 = tail call i32 @delwin(ptr noundef nonnull %5) #3
  br label %.thread

.thread:                                          ; preds = %4, %1, %2, %7
  %.1 = phi i32 [ %9, %7 ], [ -1, %2 ], [ -1, %1 ], [ -1, %4 ]
  ret i32 %.1
}

declare i32 @overwrite(ptr noundef, ptr noundef) local_unnamed_addr #1

attributes #0 = { 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 #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 = { 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 #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"}


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