; LLVM IR from vteromero/VTEnc :: tests/unit (bitstream_test)

; 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.bswriter = type { i64, i32, ptr, ptr, ptr }

@.str.10 = external hidden unnamed_addr constant [62 x i8], align 1
@.str.19 = external hidden unnamed_addr constant [41 x i8], align 1

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @bswriter_align_buffer_size(i64 noundef) #0

declare i32 @printf(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
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @bswriter_init(ptr noundef, ptr noundef, i64 noundef) #0

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @test_bswriter_size_1() #4 {
  %1 = alloca i32, align 4
  %2 = alloca %struct.bswriter, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 40, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  store i64 8, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %8 = call i64 @bswriter_align_buffer_size(i64 noundef 8)
  store i64 %8, ptr %4, align 8, !tbaa !5
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = call ptr @llvm.stacksave.p0()
  store ptr %10, ptr %5, align 8
  %11 = alloca i8, i64 %9, align 16
  store i64 %9, ptr %6, align 8
  br label %12

12:                                               ; preds = %0
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = call i32 @bswriter_init(ptr noundef %2, ptr noundef %11, i64 noundef %13)
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %18, label %16

16:                                               ; preds = %12
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.10)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  br label %29

18:                                               ; preds = %12
  br label %19

19:                                               ; preds = %18
  br label %20

20:                                               ; preds = %19
  br label %21

21:                                               ; preds = %20
  %22 = call i64 @bswriter_size(ptr noundef %2)
  %23 = icmp eq i64 %22, 0
  br i1 %23, label %26, label %24

24:                                               ; preds = %21
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str.19)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  br label %29

26:                                               ; preds = %21
  br label %27

27:                                               ; preds = %26
  br label %28

28:                                               ; preds = %27
  store i32 1, ptr %1, align 4
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %24, %16
  %30 = load ptr, ptr %5, align 8
  call void @llvm.stackrestore.p0(ptr %30)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr %2) #5
  %31 = load i32, ptr %1, align 4
  ret i32 %31
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @bswriter_size(ptr noundef) #0

attributes #0 = { 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 #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 = { nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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 #5 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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"

%struct.bswriter = type { i64, i32, ptr, ptr, ptr }

@.str.10 = external hidden unnamed_addr constant [62 x i8], align 1
@.str.19 = external hidden unnamed_addr constant [41 x i8], align 1

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @bswriter_align_buffer_size(i64 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @bswriter_init(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @test_bswriter_size_1() local_unnamed_addr #4 {
  %1 = alloca %struct.bswriter, align 8
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %1) #5
  %2 = tail call i64 @bswriter_align_buffer_size(i64 noundef 8)
  %3 = tail call ptr @llvm.stacksave.p0()
  %4 = alloca i8, i64 %2, align 16
  %5 = call i32 @bswriter_init(ptr noundef nonnull %1, ptr noundef nonnull %4, i64 noundef %2)
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %7, label %.sink.split

7:                                                ; preds = %0
  %8 = call i64 @bswriter_size(ptr noundef nonnull %1)
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %11, label %.sink.split

.sink.split:                                      ; preds = %7, %0
  %.str.19.sink = phi ptr [ @.str.10, %0 ], [ @.str.19, %7 ]
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.19.sink)
  br label %11

11:                                               ; preds = %.sink.split, %7
  %.0 = phi i32 [ 1, %7 ], [ 0, %.sink.split ]
  call void @llvm.stackrestore.p0(ptr %3)
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %1) #5
  ret i32 %.0
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @bswriter_size(ptr noundef) local_unnamed_addr #0

attributes #0 = { 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 #1 = { nofree 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #4 = { 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 #5 = { 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: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass