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

; 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_string_s = type { i32, i32, 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 uwtable
define dso_local i32 @json_string_compare(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.json_string_s, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 8, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.json_string_s, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 8, !tbaa !9
  %14 = icmp ne i32 %10, %13
  br i1 %14, label %15, label %16

15:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  br label %50

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !12
  br label %17

17:                                               ; preds = %44, %16
  %18 = load i32, ptr %6, align 4, !tbaa !12
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.json_string_s, ptr %19, i32 0, i32 0
  %21 = load i32, ptr %20, align 8, !tbaa !9
  %22 = icmp ult i32 %18, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %17
  store i32 2, ptr %7, align 4
  br label %47

24:                                               ; preds = %17
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.json_string_s, ptr %25, i32 0, i32 2
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = load i32, ptr %6, align 4, !tbaa !12
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds i8, ptr %27, i64 %29
  %31 = load i8, ptr %30, align 1, !tbaa !14
  %32 = sext i8 %31 to i32
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.json_string_s, ptr %33, i32 0, i32 2
  %35 = load ptr, ptr %34, align 8, !tbaa !13
  %36 = load i32, ptr %6, align 4, !tbaa !12
  %37 = zext i32 %36 to i64
  %38 = getelementptr inbounds i8, ptr %35, i64 %37
  %39 = load i8, ptr %38, align 1, !tbaa !14
  %40 = sext i8 %39 to i32
  %41 = icmp ne i32 %32, %40
  br i1 %41, label %42, label %43

42:                                               ; preds = %24
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %47

43:                                               ; preds = %24
  br label %44

44:                                               ; preds = %43
  %45 = load i32, ptr %6, align 4, !tbaa !12
  %46 = add i32 %45, 1
  store i32 %46, ptr %6, align 4, !tbaa !12
  br label %17, !llvm.loop !15

47:                                               ; preds = %42, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %48 = load i32, ptr %7, align 4
  switch i32 %48, label %52 [
    i32 2, label %49
    i32 1, label %50
  ]

49:                                               ; preds = %47
  store i32 1, ptr %3, align 4
  br label %50

50:                                               ; preds = %49, %47, %15
  %51 = load i32, ptr %3, align 4
  ret i32 %51

52:                                               ; preds = %47
  unreachable
}

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 }

!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 = !{!"json_string_s", !11, i64 0, !11, i64 4, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 8}
!14 = !{!7, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @json_string_compare(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %0, align 8, !tbaa !5
  %4 = load i32, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i32 %3, %4
  br i1 %.not, label %.preheader, label %._crit_edge

.preheader:                                       ; preds = %2
  %.not1314 = icmp eq i32 %3, 0
  br i1 %.not1314, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load ptr, ptr %5, align 8, !tbaa !11
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !11
  %9 = zext i32 %3 to i64
  %10 = load i8, ptr %6, align 1, !tbaa !12
  %11 = load i8, ptr %8, align 1, !tbaa !12
  %.not1219 = icmp eq i8 %10, %11
  br i1 %.not1219, label %.lr.ph21, label %._crit_edge

.lr.ph21:                                         ; preds = %.lr.ph, %12
  %indvars.iv20 = phi i64 [ %indvars.iv.next, %12 ], [ 0, %.lr.ph ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv20, 1
  %exitcond = icmp eq i64 %indvars.iv.next, %9
  br i1 %exitcond, label %._crit_edge.loopexit.loopexit, label %12, !llvm.loop !13

12:                                               ; preds = %.lr.ph21
  %13 = getelementptr inbounds i8, ptr %6, i64 %indvars.iv.next
  %14 = load i8, ptr %13, align 1, !tbaa !12
  %15 = getelementptr inbounds i8, ptr %8, i64 %indvars.iv.next
  %16 = load i8, ptr %15, align 1, !tbaa !12
  %.not12 = icmp eq i8 %14, %16
  br i1 %.not12, label %.lr.ph21, label %._crit_edge.loopexit.loopexit, !llvm.loop !13

._crit_edge.loopexit.loopexit:                    ; preds = %12, %.lr.ph21
  %.not13.le = icmp uge i64 %indvars.iv.next, %9
  %17 = zext i1 %.not13.le to i32
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %._crit_edge.loopexit.loopexit, %.preheader, %2
  %.1 = phi i32 [ 0, %2 ], [ 1, %.preheader ], [ 0, %.lr.ph ], [ %17, %._crit_edge.loopexit.loopexit ]
  ret i32 %.1
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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, !7, i64 0}
!6 = !{!"json_string_s", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!8, !8, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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