; LLVM IR from AngoraFuzzer/Angora :: llvm_mode/dfsan_rt/dfsan/dfsan_custom.ll_ (dfsw_strtod)

; 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

declare i32 @dfsan_read_label(ptr noundef, i64 noundef) #1

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

; Function Attrs: mustprogress uwtable
define dso_local double @__dfsw_strtod(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef %4) #2 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca double, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store i32 %3, ptr %9, align 4, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = call double @strtod(ptr noundef %13, ptr noundef %11) #4
  store double %14, ptr %12, align 8, !tbaa !11
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %20

17:                                               ; preds = %5
  %18 = load ptr, ptr %11, align 8, !tbaa !5
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %18, ptr %19, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %17, %5
  %21 = load ptr, ptr %11, align 8, !tbaa !5
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = icmp ugt ptr %21, %22
  br i1 %23, label %24, label %40

24:                                               ; preds = %20
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load ptr, ptr %11, align 8, !tbaa !5
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = ptrtoint ptr %26 to i64
  %29 = ptrtoint ptr %27 to i64
  %30 = sub i64 %28, %29
  %31 = load ptr, ptr %11, align 8, !tbaa !5
  %32 = load i8, ptr %31, align 1, !tbaa !13
  %33 = icmp ne i8 %32, 0
  %34 = zext i1 %33 to i64
  %35 = select i1 %33, i32 0, i32 1
  %36 = sext i32 %35 to i64
  %37 = add nsw i64 %30, %36
  %38 = call i32 @dfsan_read_label(ptr noundef %25, i64 noundef %37)
  %39 = load ptr, ptr %10, align 8, !tbaa !5
  store i32 %38, ptr %39, align 4, !tbaa !9
  br label %42

40:                                               ; preds = %20
  %41 = load ptr, ptr %10, align 8, !tbaa !5
  store i32 0, ptr %41, align 4, !tbaa !9
  br label %42

42:                                               ; preds = %40, %24
  %43 = load double, ptr %12, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  ret double %43
}

; Function Attrs: nounwind
declare double @strtod(ptr noundef, ptr noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress 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 = { nounwind "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 #4 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = !{!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"

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

declare i32 @dfsan_read_label(ptr noundef, i64 noundef) local_unnamed_addr #1

; 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 uwtable
define dso_local double @__dfsw_strtod(ptr noundef %0, ptr noundef writeonly %1, i32 noundef %2, i32 noundef %3, ptr nocapture noundef writeonly %4) local_unnamed_addr #2 {
  %6 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #4
  %7 = call double @strtod(ptr noundef %0, ptr noundef nonnull %6) #4
  %.not = icmp eq ptr %1, null
  %.pre = load ptr, ptr %6, align 8, !tbaa !5
  br i1 %.not, label %9, label %8

8:                                                ; preds = %5
  store ptr %.pre, ptr %1, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %8, %5
  %10 = icmp ugt ptr %.pre, %0
  br i1 %10, label %11, label %19

11:                                               ; preds = %9
  %12 = ptrtoint ptr %.pre to i64
  %13 = ptrtoint ptr %0 to i64
  %14 = sub i64 %12, %13
  %15 = load i8, ptr %.pre, align 1, !tbaa !9
  %.not11 = icmp eq i8 %15, 0
  %16 = zext i1 %.not11 to i64
  %17 = add nsw i64 %14, %16
  %18 = tail call i32 @dfsan_read_label(ptr noundef %0, i64 noundef %17)
  br label %19

19:                                               ; preds = %9, %11
  %storemerge = phi i32 [ %18, %11 ], [ 0, %9 ]
  store i32 %storemerge, ptr %4, align 4, !tbaa !10
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  ret double %7
}

; Function Attrs: mustprogress nofree nounwind willreturn
declare double @strtod(ptr noundef readonly, ptr nocapture noundef) local_unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress 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 nofree nounwind willreturn "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 #4 = { 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++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass