; LLVM IR from rociodellasala/TP3_SO :: Kernel (process)

; 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"

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@allProcessForeground = external global i32, align 4
@allProcessBackground = external global i32, align 4

; 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
define dso_local i32 @checkIfForegroundOrBackground(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call zeroext i8 @strcmp(ptr noundef %6, ptr noundef @.str)
  %8 = icmp ne i8 %7, 0
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store i32 0, ptr %2, align 4
  br label %26

10:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = call i32 @strlen(ptr noundef %12)
  %14 = sub nsw i32 %13, 1
  %15 = call signext i8 @charAtPos(ptr noundef %11, i32 noundef %14)
  store i8 %15, ptr %4, align 1, !tbaa !9
  %16 = load i8, ptr %4, align 1, !tbaa !9
  %17 = sext i8 %16 to i32
  %18 = icmp eq i32 %17, 38
  br i1 %18, label %19, label %22

19:                                               ; preds = %10
  %20 = load i32, ptr @allProcessForeground, align 4, !tbaa !10
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr @allProcessForeground, align 4, !tbaa !10
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %25

22:                                               ; preds = %10
  %23 = load i32, ptr @allProcessBackground, align 4, !tbaa !10
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr @allProcessBackground, align 4, !tbaa !10
  store i32 1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %25

25:                                               ; preds = %22, %19
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  br label %26

26:                                               ; preds = %25, %9
  %27 = load i32, ptr %2, align 4
  ret i32 %27
}

declare zeroext i8 @strcmp(ptr noundef, ptr noundef) #2

declare signext i8 @charAtPos(ptr noundef, i32 noundef) #2

declare i32 @strlen(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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"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"

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@allProcessForeground = external local_unnamed_addr global i32, align 4
@allProcessBackground = external local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @checkIfForegroundOrBackground(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call zeroext i8 @strcmp(ptr noundef %0, ptr noundef nonnull @.str) #2
  %.not = icmp eq i8 %2, 0
  br i1 %.not, label %.sink.split, label %9

.sink.split:                                      ; preds = %1
  %3 = tail call i32 @strlen(ptr noundef %0) #2
  %4 = add nsw i32 %3, -1
  %5 = tail call signext i8 @charAtPos(ptr noundef %0, i32 noundef %4) #2
  %6 = icmp ne i8 %5, 38
  %allProcessForeground.allProcessBackground = select i1 %6, ptr @allProcessBackground, ptr @allProcessForeground
  %. = zext i1 %6 to i32
  %7 = load i32, ptr %allProcessForeground.allProcessBackground, align 4, !tbaa !5
  %8 = add nsw i32 %7, 1
  store i32 %8, ptr %allProcessForeground.allProcessBackground, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %.sink.split, %1
  %.1 = phi i32 [ 0, %1 ], [ %., %.sink.split ]
  ret i32 %.1
}

declare zeroext i8 @strcmp(ptr noundef, ptr noundef) local_unnamed_addr #1

declare signext i8 @charAtPos(ptr noundef, i32 noundef) local_unnamed_addr #1

declare i32 @strlen(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 = { 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