; LLVM IR from Slingshot-Physics/slingshot-community :: common/json/src (json_serialize)

; 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.json_value_s = type { i32, ptr, %union.anon }
%union.anon = type { %struct.json_object_s }
%struct.json_object_s = type { i32, i32, ptr, ptr }
%struct.json_string_s = type { i32, i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @json_serialize_string(ptr noundef %0, i32 noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i8, align 1
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  call void @json_string_append(ptr noundef %10, i8 noundef signext 34)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %42, %3
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.json_value_s, ptr %13, i32 0, i32 2
  %15 = getelementptr inbounds %struct.json_string_s, ptr %14, i32 0, i32 0
  %16 = load i32, ptr %15, align 8, !tbaa !11
  %17 = icmp ult i32 %12, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %45

19:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #3
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.json_value_s, ptr %20, i32 0, i32 2
  %22 = getelementptr inbounds %struct.json_string_s, ptr %21, i32 0, i32 2
  %23 = load ptr, ptr %22, align 8, !tbaa !11
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = zext i32 %24 to i64
  %26 = getelementptr inbounds i8, ptr %23, i64 %25
  %27 = load i8, ptr %26, align 1, !tbaa !11
  store i8 %27, ptr %8, align 1, !tbaa !11
  %28 = load i8, ptr %8, align 1, !tbaa !11
  %29 = sext i8 %28 to i32
  %30 = icmp ne i32 %29, 0
  br i1 %30, label %31, label %41

31:                                               ; preds = %19
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.json_value_s, ptr %33, i32 0, i32 2
  %35 = getelementptr inbounds %struct.json_string_s, ptr %34, i32 0, i32 2
  %36 = load ptr, ptr %35, align 8, !tbaa !11
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = zext i32 %37 to i64
  %39 = getelementptr inbounds i8, ptr %36, i64 %38
  %40 = load i8, ptr %39, align 1, !tbaa !11
  call void @json_string_append(ptr noundef %32, i8 noundef signext %40)
  br label %41

41:                                               ; preds = %31, %19
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #3
  br label %42

42:                                               ; preds = %41
  %43 = load i32, ptr %7, align 4, !tbaa !9
  %44 = add i32 %43, 1
  store i32 %44, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !12

45:                                               ; preds = %18
  %46 = load ptr, ptr %6, align 8, !tbaa !5
  call void @json_string_append(ptr noundef %46, i8 noundef signext 34)
  ret void
}

declare void @json_string_append(ptr noundef, i8 noundef signext) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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 void @json_serialize_string(ptr nocapture noundef readonly %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  tail call void @json_string_append(ptr noundef %2, i8 noundef signext 34) #2
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %.not12 = icmp eq i32 %5, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  br label %7

._crit_edge:                                      ; preds = %13, %3
  tail call void @json_string_append(ptr noundef %2, i8 noundef signext 34) #2
  ret void

7:                                                ; preds = %.lr.ph, %13
  %8 = phi i32 [ %5, %.lr.ph ], [ %14, %13 ]
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %13 ]
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i64 %indvars.iv
  %11 = load i8, ptr %10, align 1, !tbaa !5
  %.not = icmp eq i8 %11, 0
  br i1 %.not, label %13, label %12

12:                                               ; preds = %7
  tail call void @json_string_append(ptr noundef %2, i8 noundef signext %11) #2
  %.pre = load i32, ptr %4, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %12, %7
  %14 = phi i32 [ %.pre, %12 ], [ %8, %7 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = zext i32 %14 to i64
  %16 = icmp ult i64 %indvars.iv.next, %15
  br i1 %16, label %7, label %._crit_edge, !llvm.loop !8
}

declare void @json_string_append(ptr noundef, i8 noundef signext) local_unnamed_addr #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 = { "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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass