; LLVM IR from Mac-Rsh/mr-library :: source (service)

; 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.mr_ringbuf = type { ptr, i64, i32, i64, i64 }

; 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 void @mr_ringbuf_init(ptr noundef, ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mr_ringbuf_allocate(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call i64 @mr_ringbuf_get_bufsz(ptr noundef %9)
  %11 = icmp eq i64 %8, %10
  br i1 %11, label %12, label %14

12:                                               ; preds = %2
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  call void @mr_ringbuf_reset(ptr noundef %13)
  store i32 0, ptr %3, align 4
  br label %37

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %15 = load i64, ptr %5, align 8, !tbaa !9
  %16 = call ptr @mr_malloc(i64 noundef %15)
  store ptr %16, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %23

19:                                               ; preds = %14
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = icmp ne i64 %20, 0
  br i1 %21, label %22, label %23

22:                                               ; preds = %19
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %36

23:                                               ; preds = %19, %14
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.mr_ringbuf, ptr %24, i32 0, i32 1
  %26 = load i64, ptr %25, align 8, !tbaa !11
  %27 = icmp ne i64 %26, 0
  br i1 %27, label %28, label %32

28:                                               ; preds = %23
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.mr_ringbuf, ptr %29, i32 0, i32 0
  %31 = load ptr, ptr %30, align 8, !tbaa !14
  call void @mr_free(ptr noundef %31)
  br label %32

32:                                               ; preds = %28, %23
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = load i64, ptr %5, align 8, !tbaa !9
  call void @mr_ringbuf_init(ptr noundef %33, ptr noundef %34, i64 noundef %35)
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %36

36:                                               ; preds = %32, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %37

37:                                               ; preds = %36, %12
  %38 = load i32, ptr %3, align 4
  ret i32 %38
}

; Function Attrs: nounwind uwtable
declare dso_local i64 @mr_ringbuf_get_bufsz(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @mr_ringbuf_reset(ptr noundef) #1

declare ptr @mr_malloc(i64 noundef) #2

declare void @mr_free(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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"mr_ringbuf", !6, i64 0, !10, i64 8, !13, i64 16, !13, i64 16, !13, i64 16, !10, i64 24, !10, i64 32}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !6, 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"

; Function Attrs: nounwind uwtable
declare dso_local void @mr_ringbuf_init(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @mr_ringbuf_allocate(ptr noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i64 @mr_ringbuf_get_bufsz(ptr noundef %0)
  %4 = icmp eq i64 %3, %1
  br i1 %4, label %5, label %6

5:                                                ; preds = %2
  tail call void @mr_ringbuf_reset(ptr noundef %0)
  br label %16

6:                                                ; preds = %2
  %7 = tail call ptr @mr_malloc(i64 noundef %1) #2
  %8 = icmp eq ptr %7, null
  %9 = icmp ne i64 %1, 0
  %or.cond = and i1 %9, %8
  br i1 %or.cond, label %16, label %10

10:                                               ; preds = %6
  %11 = getelementptr inbounds i8, ptr %0, i64 8
  %12 = load i64, ptr %11, align 8, !tbaa !5
  %.not = icmp eq i64 %12, 0
  br i1 %.not, label %15, label %13

13:                                               ; preds = %10
  %14 = load ptr, ptr %0, align 8, !tbaa !12
  tail call void @mr_free(ptr noundef %14) #2
  br label %15

15:                                               ; preds = %13, %10
  tail call void @mr_ringbuf_init(ptr noundef nonnull %0, ptr noundef %7, i64 noundef %1)
  br label %16

16:                                               ; preds = %15, %6, %5
  %.1 = phi i32 [ 0, %5 ], [ 0, %15 ], [ -1, %6 ]
  ret i32 %.1
}

; Function Attrs: nounwind uwtable
declare dso_local i64 @mr_ringbuf_get_bufsz(ptr noundef) local_unnamed_addr #0

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

declare ptr @mr_malloc(i64 noundef) local_unnamed_addr #1

declare void @mr_free(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, !10, i64 8}
!6 = !{!"mr_ringbuf", !7, i64 0, !10, i64 8, !11, i64 16, !11, i64 16, !11, i64 16, !10, i64 24, !10, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !7, i64 0}


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