; LLVM IR from Water-Melon/Melon :: src (mln_span)

; 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.mln_span_s = type { %struct.timeval, %struct.timeval, ptr, ptr, i32, ptr, ptr, ptr, ptr, ptr }
%struct.timeval = type { 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
define dso_local ptr @mln_span_new(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  %12 = call noalias ptr @malloc(i64 noundef 96) #6
  store ptr %12, ptr %10, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %4
  store ptr null, ptr %5, align 8
  store i32 1, ptr %11, align 4
  br label %50

15:                                               ; preds = %4
  %16 = load ptr, ptr %10, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.mln_span_s, ptr %16, i32 0, i32 0
  call void @llvm.memset.p0.i64(ptr align 8 %17, i8 0, i64 16, i1 false)
  %18 = load ptr, ptr %10, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.mln_span_s, ptr %18, i32 0, i32 1
  call void @llvm.memset.p0.i64(ptr align 8 %19, i8 0, i64 16, i1 false)
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.mln_span_s, ptr %21, i32 0, i32 2
  store ptr %20, ptr %22, align 8, !tbaa !11
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = load ptr, ptr %10, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.mln_span_s, ptr %24, i32 0, i32 3
  store ptr %23, ptr %25, align 8, !tbaa !15
  %26 = load i32, ptr %9, align 4, !tbaa !9
  %27 = load ptr, ptr %10, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.mln_span_s, ptr %27, i32 0, i32 4
  store i32 %26, ptr %28, align 8, !tbaa !16
  %29 = load ptr, ptr %10, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.mln_span_s, ptr %29, i32 0, i32 6
  store ptr null, ptr %30, align 8, !tbaa !17
  %31 = load ptr, ptr %10, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.mln_span_s, ptr %31, i32 0, i32 5
  store ptr null, ptr %32, align 8, !tbaa !18
  %33 = load ptr, ptr %10, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.mln_span_s, ptr %33, i32 0, i32 9
  store ptr null, ptr %34, align 8, !tbaa !19
  %35 = load ptr, ptr %10, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.mln_span_s, ptr %35, i32 0, i32 8
  store ptr null, ptr %36, align 8, !tbaa !20
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  %38 = load ptr, ptr %10, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct.mln_span_s, ptr %38, i32 0, i32 7
  store ptr %37, ptr %39, align 8, !tbaa !21
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  %41 = icmp ne ptr %40, null
  br i1 %41, label %42, label %48

42:                                               ; preds = %15
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.mln_span_s, ptr %43, i32 0, i32 5
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.mln_span_s, ptr %45, i32 0, i32 6
  %47 = load ptr, ptr %10, align 8, !tbaa !5
  call void @mln_span_chain_add(ptr noundef %44, ptr noundef %46, ptr noundef %47)
  br label %48

48:                                               ; preds = %42, %15
  %49 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %49, ptr %5, align 8
  store i32 1, ptr %11, align 4
  br label %50

50:                                               ; preds = %48, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  %51 = load ptr, ptr %5, align 8
  ret ptr %51
}

; 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: inlinehint nounwind uwtable
declare hidden void @mln_span_chain_add(ptr noundef, ptr noundef, ptr noundef) #4

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 = { 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 = { inlinehint 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 #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 = !{!"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 = !{!12, !6, i64 32}
!12 = !{!"mln_span_s", !13, i64 0, !13, i64 16, !6, i64 32, !6, i64 40, !10, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88}
!13 = !{!"timeval", !14, i64 0, !14, i64 8}
!14 = !{!"long", !7, i64 0}
!15 = !{!12, !6, i64 40}
!16 = !{!12, !10, i64 48}
!17 = !{!12, !6, i64 64}
!18 = !{!12, !6, i64 56}
!19 = !{!12, !6, i64 88}
!20 = !{!12, !6, i64 80}
!21 = !{!12, !6, i64 72}


; 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 @mln_span_new(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = tail call noalias dereferenceable_or_null(96) ptr @malloc(i64 noundef 96) #4
  %6 = icmp eq ptr %5, null
  br i1 %6, label %17, label %7

7:                                                ; preds = %4
  %8 = getelementptr inbounds i8, ptr %5, i64 32
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(32) %5, i8 0, i64 32, i1 false)
  store ptr %1, ptr %8, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %5, i64 40
  store ptr %2, ptr %9, align 8, !tbaa !13
  %10 = getelementptr inbounds i8, ptr %5, i64 48
  store i32 %3, ptr %10, align 8, !tbaa !14
  %11 = getelementptr inbounds i8, ptr %5, i64 56
  %12 = getelementptr inbounds i8, ptr %5, i64 80
  %13 = getelementptr inbounds i8, ptr %5, i64 72
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %11, i8 0, i64 16, i1 false)
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %12, i8 0, i64 16, i1 false)
  store ptr %0, ptr %13, align 8, !tbaa !15
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %17, label %14

14:                                               ; preds = %7
  %15 = getelementptr inbounds i8, ptr %0, i64 56
  %16 = getelementptr inbounds i8, ptr %0, i64 64
  tail call void @mln_span_chain_add(ptr noundef nonnull %15, ptr noundef nonnull %16, ptr noundef nonnull %5)
  br label %17

17:                                               ; preds = %7, %14, %4
  ret ptr %5
}

; 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: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @mln_span_chain_add(ptr noundef, ptr noundef, ptr 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { inlinehint 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 #4 = { 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, !11, i64 32}
!6 = !{!"mln_span_s", !7, i64 0, !7, i64 16, !11, i64 32, !11, i64 40, !12, i64 48, !11, i64 56, !11, i64 64, !11, i64 72, !11, i64 80, !11, i64 88}
!7 = !{!"timeval", !8, i64 0, !8, i64 8}
!8 = !{!"long", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"any pointer", !9, i64 0}
!12 = !{!"int", !9, i64 0}
!13 = !{!6, !11, i64 40}
!14 = !{!6, !12, i64 48}
!15 = !{!6, !11, i64 72}


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