; LLVM IR from wrnlb666/yet-another-string-library-in-c :: yasli (str_new_format)

; 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 }
%struct.string_t = type { i64, i64, [1 x i8] }

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @stbsp_vsnprintf(ptr noundef, i32 noundef, ptr noundef, ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i1 @str_resize(ptr noundef, i64 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local ptr @str_new_format(ptr noundef %0, ...) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca [1 x %struct.__va_list_tag], align 16
  %5 = alloca [1 x %struct.__va_list_tag], align 16
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #4
  %9 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  call void @llvm.va_start.p0(ptr %9)
  %10 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %5, i64 0, i64 0
  %11 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  call void @llvm.va_copy.p0(ptr %10, ptr %11)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  %14 = call i32 @stbsp_vsnprintf(ptr noundef null, i32 noundef 0, ptr noundef %12, ptr noundef %13)
  %15 = sext i32 %14 to i64
  store i64 %15, ptr %6, align 8, !tbaa !9
  %16 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %16)
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  store ptr null, ptr %7, align 8, !tbaa !5
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = call zeroext i1 @str_resize(ptr noundef %7, i64 noundef %17)
  br i1 %18, label %19, label %32

19:                                               ; preds = %1
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.string_t, ptr %20, i32 0, i32 2
  %22 = getelementptr inbounds [1 x i8], ptr %21, i64 0, i64 0
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.string_t, ptr %23, i32 0, i32 1
  %25 = load i64, ptr %24, align 8, !tbaa !11
  %26 = trunc i64 %25 to i32
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %5, i64 0, i64 0
  %29 = call i32 @stbsp_vsnprintf(ptr noundef %22, i32 noundef %26, ptr noundef %27, ptr noundef %28)
  %30 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %5, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %30)
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %31, ptr %2, align 8
  store i32 1, ptr %8, align 4
  br label %33

32:                                               ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %8, align 4
  br label %33

33:                                               ; preds = %32, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #4
  %34 = load ptr, ptr %2, align 8
  ret ptr %34
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind willreturn }
attributes #2 = { 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 #3 = { inlinehint 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 #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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"string_t", !10, i64 0, !10, i64 8, !7, i64 16}


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

; Function Attrs: nounwind uwtable
declare dso_local i32 @stbsp_vsnprintf(ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i1 @str_resize(ptr noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local ptr @str_new_format(ptr noundef %0, ...) local_unnamed_addr #2 {
  %2 = alloca [1 x %struct.__va_list_tag], align 16
  %3 = alloca [1 x %struct.__va_list_tag], align 16
  %4 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #4
  call void @llvm.va_start.p0(ptr nonnull %2)
  call void @llvm.va_copy.p0(ptr nonnull %3, ptr nonnull %2)
  %5 = call i32 @stbsp_vsnprintf(ptr noundef null, i32 noundef 0, ptr noundef %0, ptr noundef nonnull %2)
  %6 = sext i32 %5 to i64
  call void @llvm.va_end.p0(ptr nonnull %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  store ptr null, ptr %4, align 8, !tbaa !5
  %7 = call zeroext i1 @str_resize(ptr noundef nonnull %4, i64 noundef %6)
  br i1 %7, label %8, label %16

8:                                                ; preds = %1
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i64 16
  %11 = getelementptr inbounds i8, ptr %9, i64 8
  %12 = load i64, ptr %11, align 8, !tbaa !9
  %13 = trunc i64 %12 to i32
  %14 = call i32 @stbsp_vsnprintf(ptr noundef nonnull %10, i32 noundef %13, ptr noundef %0, ptr noundef nonnull %3)
  call void @llvm.va_end.p0(ptr nonnull %3)
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %1, %8
  %.0 = phi ptr [ %15, %8 ], [ null, %1 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #4
  ret ptr %.0
}

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

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #2 = { 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 #3 = { inlinehint 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 #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/C++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"string_t", !11, i64 0, !11, i64 8, !7, i64 16}
!11 = !{!"long", !7, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass