; LLVM IR from AngoraFuzzer/Angora :: llvm_mode/dfsan_rt/sanitizer_common (sanitizer_symbolizer_posix_libcdep)

; 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: mustprogress uwtable
define dso_local noundef ptr @_ZN11__sanitizer14DemangleCXXABIEPKc(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = icmp ne ptr @__cxa_demangle, null
  br i1 %6, label %7, label %18

7:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = call ptr @__cxa_demangle(ptr noundef %8, ptr noundef null, ptr noundef null, ptr noundef null)
  store ptr %9, ptr %4, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %14

12:                                               ; preds = %7
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %13, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %15

14:                                               ; preds = %7
  store i32 0, ptr %5, align 4
  br label %15

15:                                               ; preds = %14, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %16 = load i32, ptr %5, align 4
  switch i32 %16, label %22 [
    i32 0, label %17
    i32 1, label %20
  ]

17:                                               ; preds = %15
  br label %18

18:                                               ; preds = %17, %1
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %19, ptr %2, align 8
  br label %20

20:                                               ; preds = %18, %15
  %21 = load ptr, ptr %2, align 8
  ret ptr %21

22:                                               ; preds = %15
  unreachable
}

declare extern_weak ptr @__cxa_demangle(ptr noundef, ptr noundef, ptr noundef, ptr noundef) #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 = { 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 #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++ TBAA"}


; 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 uwtable
define dso_local noundef ptr @_ZN11__sanitizer14DemangleCXXABIEPKc(ptr noundef %0) local_unnamed_addr #0 {
  %.not = icmp eq ptr @__cxa_demangle, null
  br i1 %.not, label %4, label %2

2:                                                ; preds = %1
  %3 = tail call ptr @__cxa_demangle(ptr noundef %0, ptr noundef null, ptr noundef null, ptr noundef null)
  %.not6.not = icmp eq ptr %3, null
  br i1 %.not6.not, label %4, label %5

4:                                                ; preds = %2, %1
  br label %5

5:                                                ; preds = %2, %4
  %.1 = phi ptr [ %3, %2 ], [ %0, %4 ]
  ret ptr %.1
}

declare extern_weak ptr @__cxa_demangle(ptr noundef, ptr noundef, ptr noundef, ptr noundef) #1

attributes #0 = { 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 #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" }

!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)"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass