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

; 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.__va_list_tag = type { i32, i32, ptr, 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: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #1

; Function Attrs: mustprogress uwtable
declare hidden noundef i32 @_ZL13format_bufferPcmPKcPjS2_P13__va_list_tag(ptr noundef, i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #1

; Function Attrs: mustprogress uwtable
define dso_local i32 @__dfsw_snprintf(ptr noundef %0, i64 noundef %1, ptr noundef %2, i32 noundef %3, i32 noundef %4, i32 noundef %5, ptr noundef %6, ptr noundef %7, ...) #2 {
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca ptr, align 8
  %16 = alloca ptr, align 8
  %17 = alloca [1 x %struct.__va_list_tag], align 16
  %18 = alloca i32, align 4
  store ptr %0, ptr %9, align 8, !tbaa !5
  store i64 %1, ptr %10, align 8, !tbaa !9
  store ptr %2, ptr %11, align 8, !tbaa !5
  store i32 %3, ptr %12, align 4, !tbaa !11
  store i32 %4, ptr %13, align 4, !tbaa !11
  store i32 %5, ptr %14, align 4, !tbaa !11
  store ptr %6, ptr %15, align 8, !tbaa !5
  store ptr %7, ptr %16, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %17) #3
  %19 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %17, i64 0, i64 0
  call void @llvm.va_start.p0(ptr %19)
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #3
  %20 = load ptr, ptr %9, align 8, !tbaa !5
  %21 = load i64, ptr %10, align 8, !tbaa !9
  %22 = load ptr, ptr %11, align 8, !tbaa !5
  %23 = load ptr, ptr %15, align 8, !tbaa !5
  %24 = load ptr, ptr %16, align 8, !tbaa !5
  %25 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %17, i64 0, i64 0
  %26 = call noundef i32 @_ZL13format_bufferPcmPKcPjS2_P13__va_list_tag(ptr noundef %20, i64 noundef %21, ptr noundef %22, ptr noundef %23, ptr noundef %24, ptr noundef %25)
  store i32 %26, ptr %18, align 4, !tbaa !11
  %27 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %17, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %27)
  %28 = load i32, ptr %18, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %17) #3
  ret i32 %28
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind willreturn }
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 }

!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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !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"

%struct.__va_list_tag = type { i32, i32, ptr, ptr }

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

; 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 nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #1

; Function Attrs: mustprogress uwtable
declare hidden noundef i32 @_ZL13format_bufferPcmPKcPjS2_P13__va_list_tag(ptr noundef, i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @__dfsw_snprintf(ptr noundef %0, i64 noundef %1, ptr noundef %2, i32 noundef %3, i32 noundef %4, i32 noundef %5, ptr noundef %6, ptr noundef %7, ...) local_unnamed_addr #2 {
  %9 = alloca [1 x %struct.__va_list_tag], align 16
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %9) #3
  call void @llvm.va_start.p0(ptr nonnull %9)
  %10 = call noundef i32 @_ZL13format_bufferPcmPKcPjS2_P13__va_list_tag(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %6, ptr noundef %7, ptr noundef nonnull %9)
  call void @llvm.va_end.p0(ptr nonnull %9)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %9) #3
  ret i32 %10
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn }
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 }

!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: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass