; LLVM IR from buaazp/zimg :: deps/libevhtp (evhtp)

; 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.evhtp_callback_s = type { i32, ptr, i32, ptr, ptr, %union.anon.5, %struct.anon.6 }
%union.anon.5 = type { ptr }
%struct.anon.6 = type { ptr, ptr }

; Function Attrs: nounwind
declare void @free(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @evhtp_callback_free(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %5, label %6

5:                                                ; preds = %1
  br label %29

6:                                                ; preds = %1
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.evhtp_callback_s, ptr %7, i32 0, i32 0
  %9 = load i32, ptr %8, align 8, !tbaa !9
  switch i32 %9, label %18 [
    i32 0, label %10
    i32 1, label %14
  ]

10:                                               ; preds = %6
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.evhtp_callback_s, ptr %11, i32 0, i32 5
  %13 = load ptr, ptr %12, align 8, !tbaa !13
  call void @free(ptr noundef %13) #2
  br label %18

14:                                               ; preds = %6
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.evhtp_callback_s, ptr %15, i32 0, i32 5
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  call void @free(ptr noundef %17) #2
  br label %18

18:                                               ; preds = %14, %10, %6
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.evhtp_callback_s, ptr %19, i32 0, i32 4
  %21 = load ptr, ptr %20, align 8, !tbaa !14
  %22 = icmp ne ptr %21, null
  br i1 %22, label %23, label %27

23:                                               ; preds = %18
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.evhtp_callback_s, ptr %24, i32 0, i32 4
  %26 = load ptr, ptr %25, align 8, !tbaa !14
  call void @free(ptr noundef %26) #2
  br label %27

27:                                               ; preds = %23, %18
  %28 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %28) #2
  br label %29

29:                                               ; preds = %27, %5
  ret void
}

attributes #0 = { 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 #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 }

!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, !11, i64 0}
!10 = !{!"evhtp_callback_s", !11, i64 0, !6, i64 8, !11, i64 16, !6, i64 24, !6, i64 32, !7, i64 40, !12, i64 48}
!11 = !{!"int", !7, i64 0}
!12 = !{!"", !6, i64 0, !6, i64 8}
!13 = !{!7, !7, i64 0}
!14 = !{!10, !6, i64 32}


; 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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind willreturn uwtable
define dso_local void @evhtp_callback_free(ptr noundef %0) local_unnamed_addr #1 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %12, label %3

3:                                                ; preds = %1
  %4 = load i32, ptr %0, align 8, !tbaa !5
  %switch = icmp ult i32 %4, 2
  br i1 %switch, label %.sink.split, label %7

.sink.split:                                      ; preds = %3
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  %6 = load ptr, ptr %5, align 8, !tbaa !12
  tail call void @free(ptr noundef %6) #2
  br label %7

7:                                                ; preds = %3, %.sink.split
  %8 = getelementptr inbounds i8, ptr %0, i64 32
  %9 = load ptr, ptr %8, align 8, !tbaa !13
  %.not = icmp eq ptr %9, null
  br i1 %.not, label %11, label %10

10:                                               ; preds = %7
  tail call void @free(ptr noundef nonnull %9) #2
  br label %11

11:                                               ; preds = %10, %7
  tail call void @free(ptr noundef nonnull %0) #2
  br label %12

12:                                               ; preds = %1, %11
  ret void
}

attributes #0 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, 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 #1 = { mustprogress nounwind willreturn 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 }

!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 = !{!"evhtp_callback_s", !7, i64 0, !10, i64 8, !7, i64 16, !10, i64 24, !10, i64 32, !8, i64 40, !11, i64 48}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"", !10, i64 0, !10, i64 8}
!12 = !{!8, !8, i64 0}
!13 = !{!6, !10, i64 32}


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