; LLVM IR from yudi-matsuzake/libgenerics :: src (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"

%struct.queue_t = type { i64, i64, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @queue_create(ptr noundef %0, i64 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %9, label %8

8:                                                ; preds = %2
  store i32 1, ptr %3, align 4
  br label %19

9:                                                ; preds = %2
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.queue_t, ptr %11, i32 0, i32 1
  store i64 %10, ptr %12, align 8, !tbaa !11
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.queue_t, ptr %13, i32 0, i32 0
  store i64 0, ptr %14, align 8, !tbaa !13
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.queue_t, ptr %15, i32 0, i32 2
  store ptr null, ptr %16, align 8, !tbaa !14
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.queue_t, ptr %17, i32 0, i32 3
  store ptr null, ptr %18, align 8, !tbaa !15
  store i32 0, ptr %3, align 4
  br label %19

19:                                               ; preds = %9, %8
  %20 = load i32, ptr %3, align 4
  ret i32 %20
}

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" }

!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 = !{!"queue_t", !10, i64 0, !10, i64 8, !6, i64 16, !6, i64 24}
!13 = !{!12, !10, i64 0}
!14 = !{!12, !6, i64 16}
!15 = !{!12, !6, i64 24}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local range(i32 0, 2) i32 @queue_create(ptr noundef writeonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %6, label %3

3:                                                ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  store i64 %1, ptr %4, align 8, !tbaa !5
  store i64 0, ptr %0, align 8, !tbaa !11
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %5, i8 0, i64 16, i1 false)
  br label %6

6:                                                ; preds = %2, %3
  %.0 = phi i32 [ 0, %3 ], [ 1, %2 ]
  ret i32 %.0
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 nounwind willreturn memory(argmem: write) }

!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 8}
!6 = !{!"queue_t", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 24}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass