; LLVM IR from 0intro/wmii :: lib/libfmt (vfprint)

; 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.Fmt = type { i8, ptr, ptr, ptr, ptr, ptr, i32, [1 x %struct.__va_list_tag], i32, i32, i32, i64, ptr, ptr, ptr }
%struct.__va_list_tag = type { i32, i32, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @vfprint(i32 noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca %struct.Fmt, align 8
  %9 = alloca [256 x i8], align 16
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 128, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 256, ptr %9) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = getelementptr inbounds [256 x i8], ptr %9, i64 0, i64 0
  %14 = call i32 @fmtfdinit(ptr noundef %8, i32 noundef %12, ptr noundef %13, i32 noundef 256)
  %15 = getelementptr inbounds %struct.Fmt, ptr %8, i32 0, i32 7
  %16 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %15, i64 0, i64 0
  %17 = load ptr, ptr %7, align 8, !tbaa !9
  call void @llvm.va_copy.p0(ptr %16, ptr %17)
  %18 = load ptr, ptr %6, align 8, !tbaa !9
  %19 = call i32 @dofmt(ptr noundef %8, ptr noundef %18)
  store i32 %19, ptr %10, align 4, !tbaa !5
  %20 = getelementptr inbounds %struct.Fmt, ptr %8, i32 0, i32 7
  %21 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %20, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %21)
  %22 = load i32, ptr %10, align 4, !tbaa !5
  %23 = icmp sgt i32 %22, 0
  br i1 %23, label %24, label %28

24:                                               ; preds = %3
  %25 = call i32 @__fmtFdFlush(ptr noundef %8)
  %26 = icmp eq i32 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %24
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %30

28:                                               ; preds = %24, %3
  %29 = load i32, ptr %10, align 4, !tbaa !5
  store i32 %29, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %30

30:                                               ; preds = %28, %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 256, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 128, ptr %8) #4
  %31 = load i32, ptr %4, align 4
  ret i32 %31
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @fmtfdinit(ptr noundef, i32 noundef, ptr noundef, i32 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_copy.p0(ptr, ptr) #3

declare i32 @dofmt(ptr noundef, ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #3

declare i32 @__fmtFdFlush(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = { nocallback nofree nosync nounwind willreturn }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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.Fmt = type { i8, ptr, ptr, ptr, ptr, ptr, i32, [1 x %struct.__va_list_tag], i32, i32, i32, i64, ptr, ptr, ptr }
%struct.__va_list_tag = type { i32, i32, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @vfprint(i32 noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = alloca %struct.Fmt, align 8
  %5 = alloca [256 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 256, ptr nonnull %5) #4
  %6 = call i32 @fmtfdinit(ptr noundef nonnull %4, i32 noundef %0, ptr noundef nonnull %5, i32 noundef 256) #4
  %7 = getelementptr inbounds i8, ptr %4, i64 56
  call void @llvm.va_copy.p0(ptr nonnull %7, ptr %2)
  %8 = call i32 @dofmt(ptr noundef nonnull %4, ptr noundef %1) #4
  call void @llvm.va_end.p0(ptr nonnull %7)
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %10, label %13

10:                                               ; preds = %3
  %11 = call i32 @__fmtFdFlush(ptr noundef nonnull %4) #4
  %12 = icmp eq i32 %11, 0
  br i1 %12, label %14, label %13

13:                                               ; preds = %10, %3
  br label %14

14:                                               ; preds = %10, %13
  %.0 = phi i32 [ %8, %13 ], [ -1, %10 ]
  call void @llvm.lifetime.end.p0(i64 256, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %4) #4
  ret i32 %.0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @fmtfdinit(ptr noundef, i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_copy.p0(ptr, ptr) #3

declare i32 @dofmt(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #3

declare i32 @__fmtFdFlush(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 nocallback nofree nosync nounwind willreturn }
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)"}


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