; LLVM IR from ohler55/agoo :: ext/agoo (doc)

; 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._agooDoc = type { ptr, ptr, ptr }

@json_map = external hidden global [256 x i8], align 16

; 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 @agoo_doc_skip_jwhite(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct._agooDoc, ptr %4, i32 0, i32 1
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %6, ptr %3, align 8, !tbaa !5
  br label %7

7:                                                ; preds = %18, %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct._agooDoc, ptr %8, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = load i8, ptr %10, align 1, !tbaa !11
  %12 = zext i8 %11 to i64
  %13 = getelementptr inbounds [256 x i8], ptr @json_map, i64 0, i64 %12
  %14 = load i8, ptr %13, align 1, !tbaa !11
  %15 = sext i8 %14 to i32
  %16 = icmp eq i32 119, %15
  br i1 %16, label %17, label %23

17:                                               ; preds = %7
  br label %18

18:                                               ; preds = %17
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct._agooDoc, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = getelementptr inbounds i8, ptr %21, i32 1
  store ptr %22, ptr %20, align 8, !tbaa !9
  br label %7, !llvm.loop !12

23:                                               ; preds = %7
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct._agooDoc, ptr %24, i32 0, i32 1
  %26 = load ptr, ptr %25, align 8, !tbaa !9
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = ptrtoint ptr %26 to i64
  %29 = ptrtoint ptr %27 to i64
  %30 = sub i64 %28, %29
  %31 = trunc i64 %30 to i32
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i32 %31
}

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, !6, i64 8}
!10 = !{!"_agooDoc", !6, i64 0, !6, i64 8, !6, i64 16}
!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"

@json_map = external hidden local_unnamed_addr global [256 x i8], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local noundef i32 @agoo_doc_skip_jwhite(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = load i8, ptr %3, align 1, !tbaa !10
  %5 = zext i8 %4 to i64
  %6 = getelementptr inbounds [256 x i8], ptr @json_map, i64 0, i64 %5
  %7 = load i8, ptr %6, align 1, !tbaa !10
  %8 = icmp eq i8 %7, 119
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %9 = phi ptr [ %10, %.lr.ph ], [ %3, %1 ]
  %10 = getelementptr inbounds i8, ptr %9, i64 1
  store ptr %10, ptr %2, align 8, !tbaa !5
  %11 = load i8, ptr %10, align 1, !tbaa !10
  %12 = zext i8 %11 to i64
  %13 = getelementptr inbounds [256 x i8], ptr @json_map, i64 0, i64 %12
  %14 = load i8, ptr %13, align 1, !tbaa !10
  %15 = icmp eq i8 %14, 119
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.lcssa = phi ptr [ %3, %1 ], [ %10, %.lr.ph ]
  %16 = ptrtoint ptr %.lcssa to i64
  %17 = ptrtoint ptr %3 to i64
  %18 = sub i64 %16, %17
  %19 = trunc i64 %18 to i32
  ret i32 %19
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, argmem: readwrite, 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 8}
!6 = !{!"_agooDoc", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!8, !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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