; LLVM IR from introlab/odas :: src/utils (fifo)

; 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.fifo_obj = type { ptr, i32, i32, %union.pthread_mutex_t, %union.sem_t, %union.sem_t }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%union.sem_t = type { i64, [24 x i8] }

; Function Attrs: nounwind uwtable
define dso_local ptr @fifo_construct_zero(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %4 = call noalias ptr @malloc(i64 noundef 120) #6
  store ptr %4, ptr %3, align 8, !tbaa !9
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = zext i32 %5 to i64
  %7 = mul i64 8, %6
  %8 = call noalias ptr @malloc(i64 noundef %7) #6
  %9 = load ptr, ptr %3, align 8, !tbaa !9
  %10 = getelementptr inbounds %struct.fifo_obj, ptr %9, i32 0, i32 0
  store ptr %8, ptr %10, align 8, !tbaa !11
  %11 = load ptr, ptr %3, align 8, !tbaa !9
  %12 = getelementptr inbounds %struct.fifo_obj, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = zext i32 %14 to i64
  %16 = mul i64 8, %15
  call void @llvm.memset.p0.i64(ptr align 8 %13, i8 0, i64 %16, i1 false)
  %17 = load ptr, ptr %3, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.fifo_obj, ptr %17, i32 0, i32 1
  store i32 0, ptr %18, align 8, !tbaa !13
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct.fifo_obj, ptr %20, i32 0, i32 2
  store i32 %19, ptr %21, align 4, !tbaa !14
  %22 = load ptr, ptr %3, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.fifo_obj, ptr %22, i32 0, i32 3
  %24 = call i32 @pthread_mutex_init(ptr noundef %23, ptr noundef null) #5
  %25 = load ptr, ptr %3, align 8, !tbaa !9
  %26 = getelementptr inbounds %struct.fifo_obj, ptr %25, i32 0, i32 5
  %27 = call i32 @sem_init(ptr noundef %26, i32 noundef 0, i32 noundef 0) #5
  %28 = load ptr, ptr %3, align 8, !tbaa !9
  %29 = getelementptr inbounds %struct.fifo_obj, ptr %28, i32 0, i32 4
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = call i32 @sem_init(ptr noundef %29, i32 noundef 0, i32 noundef %30) #5
  %32 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  ret ptr %32
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

; Function Attrs: nounwind
declare i32 @pthread_mutex_init(ptr noundef, ptr noundef) #4

; Function Attrs: nounwind
declare i32 @sem_init(ptr noundef, i32 noundef, i32 noundef) #4

; 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 allocsize(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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { 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 #5 = { nounwind }
attributes #6 = { nounwind allocsize(0) }

!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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"fifo_obj", !10, i64 0, !6, i64 8, !6, i64 12, !7, i64 16, !7, i64 56, !7, i64 88}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !6, i64 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"

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @fifo_construct_zero(i32 noundef %0) local_unnamed_addr #0 {
  %2 = tail call noalias dereferenceable_or_null(120) ptr @malloc(i64 noundef 120) #4
  %3 = zext i32 %0 to i64
  %4 = shl nuw nsw i64 %3, 3
  %calloc = tail call ptr @calloc(i64 1, i64 %4)
  store ptr %calloc, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %2, i64 8
  store i32 0, ptr %5, align 8, !tbaa !11
  %6 = getelementptr inbounds i8, ptr %2, i64 12
  store i32 %0, ptr %6, align 4, !tbaa !12
  %7 = getelementptr inbounds i8, ptr %2, i64 16
  %8 = tail call i32 @pthread_mutex_init(ptr noundef nonnull %7, ptr noundef null) #5
  %9 = getelementptr inbounds i8, ptr %2, i64 88
  %10 = tail call i32 @sem_init(ptr noundef nonnull %9, i32 noundef 0, i32 noundef 0) #5
  %11 = getelementptr inbounds i8, ptr %2, i64 56
  %12 = tail call i32 @sem_init(ptr noundef nonnull %11, i32 noundef 0, i32 noundef %0) #5
  ret ptr %2
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i32 @pthread_mutex_init(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind
declare i32 @sem_init(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #3

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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 "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 willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }
attributes #4 = { nounwind allocsize(0) }
attributes #5 = { 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, !7, i64 0}
!6 = !{!"fifo_obj", !7, i64 0, !10, i64 8, !10, i64 12, !8, i64 16, !8, i64 56, !8, i64 88}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 12}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass