; LLVM IR from div-bargali/Data-Structures-and-Algorithms :: C/Data-Structures/Queue (Priority_queue)

; 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"

@rear = external dso_local global i32, align 4
@front = external dso_local global i32, align 4
@.str.9 = external hidden unnamed_addr constant [49 x i8], align 1
@pri_que = external dso_local global [5 x i32], align 16

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @insert_by_priority(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr @rear, align 4, !tbaa !5
  %4 = icmp sge i32 %3, 4
  br i1 %4, label %5, label %7

5:                                                ; preds = %1
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  br label %27

7:                                                ; preds = %1
  %8 = load i32, ptr @front, align 4, !tbaa !5
  %9 = icmp eq i32 %8, -1
  br i1 %9, label %10, label %22

10:                                               ; preds = %7
  %11 = load i32, ptr @rear, align 4, !tbaa !5
  %12 = icmp eq i32 %11, -1
  br i1 %12, label %13, label %22

13:                                               ; preds = %10
  %14 = load i32, ptr @front, align 4, !tbaa !5
  %15 = add nsw i32 %14, 1
  store i32 %15, ptr @front, align 4, !tbaa !5
  %16 = load i32, ptr @rear, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr @rear, align 4, !tbaa !5
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = load i32, ptr @rear, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [5 x i32], ptr @pri_que, i64 0, i64 %20
  store i32 %18, ptr %21, align 4, !tbaa !5
  br label %27

22:                                               ; preds = %10, %7
  %23 = load i32, ptr %2, align 4, !tbaa !5
  call void @check(i32 noundef %23)
  br label %24

24:                                               ; preds = %22
  %25 = load i32, ptr @rear, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr @rear, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %24, %13, %5
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @check(i32 noundef) #1

attributes #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 = { 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" }

!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"}


; 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"

@rear = external dso_local local_unnamed_addr global i32, align 4
@front = external dso_local local_unnamed_addr global i32, align 4
@.str.9 = external hidden unnamed_addr constant [49 x i8], align 1
@pri_que = external dso_local local_unnamed_addr global [5 x i32], align 16

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @insert_by_priority(i32 noundef %0) local_unnamed_addr #1 {
  %2 = load i32, ptr @rear, align 4
  %3 = icmp sgt i32 %2, 3
  br i1 %3, label %4, label %6

4:                                                ; preds = %1
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  br label %16

6:                                                ; preds = %1
  %7 = load i32, ptr @front, align 4, !tbaa !5
  %8 = and i32 %7, %2
  %or.cond = icmp eq i32 %8, -1
  br i1 %or.cond, label %9, label %13

9:                                                ; preds = %6
  store i32 0, ptr @front, align 4, !tbaa !5
  %10 = add nsw i32 %2, 1
  store i32 %10, ptr @rear, align 4, !tbaa !5
  %11 = zext nneg i32 %10 to i64
  %12 = getelementptr inbounds [5 x i32], ptr @pri_que, i64 0, i64 %11
  store i32 %0, ptr %12, align 4, !tbaa !5
  br label %16

13:                                               ; preds = %6
  tail call void @check(i32 noundef %0)
  %14 = load i32, ptr @rear, align 4, !tbaa !5
  %15 = add nsw i32 %14, 1
  store i32 %15, ptr @rear, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %13, %9, %4
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @check(i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 #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" }

!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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass