; LLVM IR from bartobri/data-structures-c :: priority-queue/doubly-linked-list-unordered-first-class (main)

; 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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %5 = call i64 @time(ptr noundef null) #4
  %6 = trunc i64 %5 to i32
  call void @srand(i32 noundef %6) #4
  %7 = call ptr @PQinit()
  store ptr %7, ptr %3, align 8, !tbaa !5
  %8 = call ptr @PQinit()
  store ptr %8, ptr %4, align 8, !tbaa !5
  store i32 0, ptr %2, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %17, %0
  %10 = load i32, ptr %2, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 20
  br i1 %11, label %12, label %20

12:                                               ; preds = %9
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = call i32 @rand() #4
  %15 = srem i32 %14, 20
  %16 = call ptr @PQinsert(ptr noundef %13, i32 noundef %15)
  br label %17

17:                                               ; preds = %12
  %18 = load i32, ptr %2, align 4, !tbaa !9
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %2, align 4, !tbaa !9
  br label %9, !llvm.loop !11

20:                                               ; preds = %9
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  call void @PQcopy(ptr noundef %21, ptr noundef %22)
  br label %23

23:                                               ; preds = %28, %20
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = call i32 @PQempty(ptr noundef %24)
  %26 = icmp ne i32 %25, 0
  %27 = xor i1 %26, true
  br i1 %27, label %28, label %32

28:                                               ; preds = %23
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = call i32 @PQdelmax(ptr noundef %29)
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %30)
  br label %23, !llvm.loop !13

32:                                               ; preds = %23
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  call void @PQdestroy(ptr noundef %34)
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  call void @PQdestroy(ptr noundef %35)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare void @srand(i32 noundef) #2

; Function Attrs: nounwind
declare i64 @time(ptr noundef) #2

declare ptr @PQinit() #3

declare ptr @PQinsert(ptr noundef, i32 noundef) #3

; Function Attrs: nounwind
declare i32 @rand() #2

declare void @PQcopy(ptr noundef, ptr noundef) #3

declare i32 @PQempty(ptr noundef) #3

declare i32 @printf(ptr noundef, ...) #3

declare i32 @PQdelmax(ptr noundef) #3

declare void @PQdestroy(ptr noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = { "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 #4 = { 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}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i64 @time(ptr noundef null) #4
  %2 = trunc i64 %1 to i32
  tail call void @srand(i32 noundef %2) #4
  %3 = tail call ptr @PQinit() #4
  %4 = tail call ptr @PQinit() #4
  %5 = tail call i32 @rand() #4
  %6 = srem i32 %5, 20
  %7 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %6) #4
  %8 = tail call i32 @rand() #4
  %9 = srem i32 %8, 20
  %10 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %9) #4
  %11 = tail call i32 @rand() #4
  %12 = srem i32 %11, 20
  %13 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %12) #4
  %14 = tail call i32 @rand() #4
  %15 = srem i32 %14, 20
  %16 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %15) #4
  %17 = tail call i32 @rand() #4
  %18 = srem i32 %17, 20
  %19 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %18) #4
  %20 = tail call i32 @rand() #4
  %21 = srem i32 %20, 20
  %22 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %21) #4
  %23 = tail call i32 @rand() #4
  %24 = srem i32 %23, 20
  %25 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %24) #4
  %26 = tail call i32 @rand() #4
  %27 = srem i32 %26, 20
  %28 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %27) #4
  %29 = tail call i32 @rand() #4
  %30 = srem i32 %29, 20
  %31 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %30) #4
  %32 = tail call i32 @rand() #4
  %33 = srem i32 %32, 20
  %34 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %33) #4
  %35 = tail call i32 @rand() #4
  %36 = srem i32 %35, 20
  %37 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %36) #4
  %38 = tail call i32 @rand() #4
  %39 = srem i32 %38, 20
  %40 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %39) #4
  %41 = tail call i32 @rand() #4
  %42 = srem i32 %41, 20
  %43 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %42) #4
  %44 = tail call i32 @rand() #4
  %45 = srem i32 %44, 20
  %46 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %45) #4
  %47 = tail call i32 @rand() #4
  %48 = srem i32 %47, 20
  %49 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %48) #4
  %50 = tail call i32 @rand() #4
  %51 = srem i32 %50, 20
  %52 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %51) #4
  %53 = tail call i32 @rand() #4
  %54 = srem i32 %53, 20
  %55 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %54) #4
  %56 = tail call i32 @rand() #4
  %57 = srem i32 %56, 20
  %58 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %57) #4
  %59 = tail call i32 @rand() #4
  %60 = srem i32 %59, 20
  %61 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %60) #4
  %62 = tail call i32 @rand() #4
  %63 = srem i32 %62, 20
  %64 = tail call ptr @PQinsert(ptr noundef %3, i32 noundef %63) #4
  tail call void @PQcopy(ptr noundef %3, ptr noundef %4) #4
  %65 = tail call i32 @PQempty(ptr noundef %4) #4
  %.not9 = icmp eq i32 %65, 0
  br i1 %.not9, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %66 = tail call i32 @PQdelmax(ptr noundef %4) #4
  %67 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %66)
  %68 = tail call i32 @PQempty(ptr noundef %4) #4
  %.not = icmp eq i32 %68, 0
  br i1 %.not, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %0
  %69 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  tail call void @PQdestroy(ptr noundef %3) #4
  tail call void @PQdestroy(ptr noundef %4) #4
  ret i32 0
}

; Function Attrs: nounwind
declare void @srand(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i64 @time(ptr noundef) local_unnamed_addr #1

declare ptr @PQinit() local_unnamed_addr #2

declare ptr @PQinsert(ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind
declare i32 @rand() local_unnamed_addr #1

declare void @PQcopy(ptr noundef, ptr noundef) local_unnamed_addr #2

declare i32 @PQempty(ptr noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare i32 @PQdelmax(ptr noundef) local_unnamed_addr #2

declare void @PQdestroy(ptr noundef) local_unnamed_addr #2

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 = { 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 #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 = { 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 #4 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass