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

; 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"

; 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 i64 @atoi64(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = load i8, ptr %5, align 1, !tbaa !11
  %7 = sext i8 %6 to i32
  %8 = icmp eq i32 %7, 45
  br i1 %8, label %9, label %12

9:                                                ; preds = %1
  store i32 1, ptr %4, align 4, !tbaa !9
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %10, i32 1
  store ptr %11, ptr %2, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %9, %1
  store i64 0, ptr %3, align 8, !tbaa !12
  br label %13

13:                                               ; preds = %26, %12
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !11
  %16 = icmp ne i8 %15, 0
  br i1 %16, label %17, label %29

17:                                               ; preds = %13
  %18 = load i64, ptr %3, align 8, !tbaa !12
  %19 = mul nsw i64 10, %18
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = load i8, ptr %20, align 1, !tbaa !11
  %22 = sext i8 %21 to i32
  %23 = sub nsw i32 %22, 48
  %24 = sext i32 %23 to i64
  %25 = add nsw i64 %19, %24
  store i64 %25, ptr %3, align 8, !tbaa !12
  br label %26

26:                                               ; preds = %17
  %27 = load ptr, ptr %2, align 8, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %27, i32 1
  store ptr %28, ptr %2, align 8, !tbaa !5
  br label %13, !llvm.loop !14

29:                                               ; preds = %13
  %30 = load i32, ptr %4, align 4, !tbaa !9
  %31 = icmp ne i32 %30, 0
  br i1 %31, label %32, label %35

32:                                               ; preds = %29
  %33 = load i64, ptr %3, align 8, !tbaa !12
  %34 = mul nsw i64 %33, -1
  store i64 %34, ptr %3, align 8, !tbaa !12
  br label %35

35:                                               ; preds = %32, %29
  %36 = load i64, ptr %3, align 8, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %36
}

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 i64 @atoi64(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %.not13 = icmp eq i8 %2, 45
  %spec.select.idx = zext i1 %.not13 to i64
  %spec.select = getelementptr inbounds i8, ptr %0, i64 %spec.select.idx
  %3 = load i8, ptr %spec.select, align 1, !tbaa !5
  %.not15 = icmp eq i8 %3, 0
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %4 = phi i8 [ %10, %.lr.ph ], [ %3, %1 ]
  %.0817 = phi i64 [ %8, %.lr.ph ], [ 0, %1 ]
  %.11016 = phi ptr [ %9, %.lr.ph ], [ %spec.select, %1 ]
  %5 = mul nsw i64 %.0817, 10
  %6 = sext i8 %4 to i64
  %7 = add i64 %5, -48
  %8 = add i64 %7, %6
  %9 = getelementptr inbounds i8, ptr %.11016, i64 1
  %10 = load i8, ptr %9, align 1, !tbaa !5
  %.not = icmp eq i8 %10, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !8

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.08.lcssa = phi i64 [ 0, %1 ], [ %8, %.lr.ph ]
  %11 = sub nsw i64 0, %.08.lcssa
  %spec.select14 = select i1 %.not13, i64 %11, i64 %.08.lcssa
  ret i64 %spec.select14
}

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, !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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass