; LLVM IR from Softmotions/iowow :: src/json (iwjsreg)

; 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.jbl_node = type { ptr, ptr, ptr, ptr, i32, i32, ptr, i32, i32, %union.anon }
%union.anon = type { ptr }

; 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 willreturn memory(read)
declare i64 @strlen(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @iwjsreg_merge(ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i64 @iwjsreg_merge_str(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca %struct.jbl_node, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 64, ptr %9) #4
  call void @llvm.memset.p0.i64(ptr align 8 %9, i8 0, i64 64, i1 false)
  %10 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 0
  %11 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 1
  %12 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 2
  %13 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 3
  %14 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 4
  %15 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 5
  %16 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 6
  %17 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 7
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = icmp sgt i32 %18, -1
  br i1 %19, label %20, label %23

20:                                               ; preds = %4
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  br label %26

23:                                               ; preds = %4
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = call i64 @strlen(ptr noundef %24) #5
  br label %26

26:                                               ; preds = %23, %20
  %27 = phi i64 [ %22, %20 ], [ %25, %23 ]
  %28 = trunc i64 %27 to i32
  store i32 %28, ptr %17, align 8, !tbaa !11
  %29 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 8
  store i32 5, ptr %29, align 4, !tbaa !13
  %30 = getelementptr inbounds %struct.jbl_node, ptr %9, i32 0, i32 9
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %31, ptr %30, align 8, !tbaa !14
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = call i64 @iwjsreg_merge(ptr noundef %32, ptr noundef %33, ptr noundef %9)
  call void @llvm.lifetime.end.p0(i64 64, ptr %9) #4
  ret i64 %34
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(read) "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 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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind }
attributes #5 = { nounwind willreturn memory(read) }

!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, !10, i64 48}
!12 = !{!"jbl_node", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !10, i64 32, !10, i64 36, !6, i64 40, !10, i64 48, !10, i64 52, !7, i64 56}
!13 = !{!12, !10, i64 52}
!14 = !{!7, !7, 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"

%struct.jbl_node = type { ptr, ptr, ptr, ptr, i32, i32, ptr, i32, i32, %union.anon }
%union.anon = type { ptr }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @iwjsreg_merge(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local i64 @iwjsreg_merge_str(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) local_unnamed_addr #2 {
  %5 = alloca %struct.jbl_node, align 8
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %5) #4
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(64) %5, i8 0, i64 48, i1 false)
  %6 = icmp sgt i32 %3, -1
  br i1 %6, label %10, label %7

7:                                                ; preds = %4
  %8 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %2) #5
  %9 = trunc i64 %8 to i32
  br label %10

10:                                               ; preds = %4, %7
  %11 = phi i32 [ %9, %7 ], [ %3, %4 ]
  %12 = getelementptr inbounds i8, ptr %5, i64 48
  store i32 %11, ptr %12, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %5, i64 52
  store i32 5, ptr %13, align 4, !tbaa !11
  %14 = getelementptr inbounds i8, ptr %5, i64 56
  store ptr %2, ptr %14, align 8, !tbaa !12
  %15 = call i64 @iwjsreg_merge(ptr noundef %0, ptr noundef %1, ptr noundef nonnull %5)
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %5) #4
  ret i64 %15
}

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

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 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 #3 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind }
attributes #5 = { nounwind willreturn memory(read) }

!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 48}
!6 = !{!"jbl_node", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !10, i64 32, !10, i64 36, !7, i64 40, !10, i64 48, !10, i64 52, !8, i64 56}
!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 52}
!12 = !{!8, !8, i64 0}


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