; LLVM IR from vteromero/VTEnc :: tests/unit (encodebits_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 }

@__const.test_encode_lower_bits16.values = external hidden unnamed_addr constant [8 x i16], align 16
@.str.2 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [109 x i8], align 1

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @bswriter_align_buffer_size(i64 noundef) #2

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @bswriter_init(ptr noundef, ptr noundef, i64 noundef) #2

; Function Attrs: nounwind willreturn memory(read)
declare i32 @memcmp(ptr noundef, ptr noundef, i64 noundef) #5

declare i32 @printf(ptr noundef, ...) #6

; 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) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @test_encode_lower_bits16() #7 {
  %1 = alloca i32, align 4
  %2 = alloca [8 x i16], align 16
  %3 = alloca %struct.bswriter, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 16, ptr %2) #8
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %2, ptr align 16 @__const.test_encode_lower_bits16.values, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 40, ptr %3) #8
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #8
  store i64 16, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #8
  %9 = call i64 @bswriter_align_buffer_size(i64 noundef 16)
  store i64 %9, ptr %5, align 8, !tbaa !5
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = call ptr @llvm.stacksave.p0()
  store ptr %11, ptr %6, align 8
  %12 = alloca i8, i64 %10, align 16
  store i64 %10, ptr %7, align 8
  %13 = load i64, ptr %5, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 16 %12, i8 0, i64 %13, i1 false)
  %14 = load i64, ptr %5, align 8, !tbaa !5
  %15 = call i32 @bswriter_init(ptr noundef %3, ptr noundef %12, i64 noundef %14)
  %16 = getelementptr inbounds [8 x i16], ptr %2, i64 0, i64 0
  call void @encode_lower_bits16(ptr noundef %3, ptr noundef %16, i64 noundef 8, i32 noundef 1)
  %17 = getelementptr inbounds [8 x i16], ptr %2, i64 0, i64 0
  call void @encode_lower_bits16(ptr noundef %3, ptr noundef %17, i64 noundef 8, i32 noundef 2)
  %18 = getelementptr inbounds [8 x i16], ptr %2, i64 0, i64 0
  call void @encode_lower_bits16(ptr noundef %3, ptr noundef %18, i64 noundef 8, i32 noundef 3)
  %19 = getelementptr inbounds [8 x i16], ptr %2, i64 0, i64 0
  call void @encode_lower_bits16(ptr noundef %3, ptr noundef %19, i64 noundef 4, i32 noundef 4)
  %20 = getelementptr inbounds [8 x i16], ptr %2, i64 0, i64 0
  call void @encode_lower_bits16(ptr noundef %3, ptr noundef %20, i64 noundef 4, i32 noundef 8)
  %21 = getelementptr inbounds [8 x i16], ptr %2, i64 0, i64 0
  call void @encode_lower_bits16(ptr noundef %3, ptr noundef %21, i64 noundef 2, i32 noundef 16)
  br label %22

22:                                               ; preds = %0
  %23 = call i32 @memcmp(ptr noundef %12, ptr noundef @.str.2, i64 noundef 16) #9
  %24 = icmp eq i32 %23, 0
  br i1 %24, label %27, label %25

25:                                               ; preds = %22
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %8, align 4
  br label %30

27:                                               ; preds = %22
  br label %28

28:                                               ; preds = %27
  br label %29

29:                                               ; preds = %28
  store i32 1, ptr %1, align 4
  store i32 1, ptr %8, align 4
  br label %30

30:                                               ; preds = %29, %25
  %31 = load ptr, ptr %6, align 8
  call void @llvm.stackrestore.p0(ptr %31)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #8
  call void @llvm.lifetime.end.p0(i64 40, ptr %3) #8
  call void @llvm.lifetime.end.p0(i64 16, ptr %2) #8
  %32 = load i32, ptr %1, align 4
  ret i32 %32
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @encode_lower_bits16(ptr noundef, ptr noundef, i64 noundef, i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { nocallback nofree nosync nounwind willreturn }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { nounwind willreturn memory(read) "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 #6 = { "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 #7 = { 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 #8 = { nounwind }
attributes #9 = { nounwind willreturn memory(read) }

!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 }

@__const.test_encode_lower_bits16.values = external hidden unnamed_addr constant [8 x i16], align 16
@.str.2 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [109 x i8], align 1

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @bswriter_align_buffer_size(i64 noundef) local_unnamed_addr #2

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

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @bswriter_init(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #5

; 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) #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @test_encode_lower_bits16() local_unnamed_addr #6 {
  %1 = alloca [8 x i16], align 16
  %2 = alloca %struct.bswriter, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #8
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %1, ptr noundef nonnull align 16 dereferenceable(16) @__const.test_encode_lower_bits16.values, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %2) #8
  %3 = tail call i64 @bswriter_align_buffer_size(i64 noundef 16)
  %4 = tail call ptr @llvm.stacksave.p0()
  %5 = alloca i8, i64 %3, align 16
  call void @llvm.memset.p0.i64(ptr nonnull align 16 %5, i8 0, i64 %3, i1 false)
  %6 = call i32 @bswriter_init(ptr noundef nonnull %2, ptr noundef nonnull %5, i64 noundef %3)
  call void @encode_lower_bits16(ptr noundef nonnull %2, ptr noundef nonnull %1, i64 noundef 8, i32 noundef 1)
  call void @encode_lower_bits16(ptr noundef nonnull %2, ptr noundef nonnull %1, i64 noundef 8, i32 noundef 2)
  call void @encode_lower_bits16(ptr noundef nonnull %2, ptr noundef nonnull %1, i64 noundef 8, i32 noundef 3)
  call void @encode_lower_bits16(ptr noundef nonnull %2, ptr noundef nonnull %1, i64 noundef 4, i32 noundef 4)
  call void @encode_lower_bits16(ptr noundef nonnull %2, ptr noundef nonnull %1, i64 noundef 4, i32 noundef 8)
  call void @encode_lower_bits16(ptr noundef nonnull %2, ptr noundef nonnull %1, i64 noundef 2, i32 noundef 16)
  %bcmp = call i32 @bcmp(ptr noundef nonnull dereferenceable(16) %5, ptr noundef nonnull dereferenceable(16) @.str.2, i64 16)
  %7 = icmp eq i32 %bcmp, 0
  br i1 %7, label %10, label %8

8:                                                ; preds = %0
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %10

10:                                               ; preds = %0, %8
  %.0 = phi i32 [ 0, %8 ], [ 1, %0 ]
  call void @llvm.stackrestore.p0(ptr %4)
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %2) #8
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #8
  ret i32 %.0
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @encode_lower_bits16(ptr noundef, ptr noundef, i64 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind willreturn memory(argmem: read)
declare i32 @bcmp(ptr nocapture, ptr nocapture, i64) local_unnamed_addr #7

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #4 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { 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 #6 = { 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 #7 = { nofree nounwind willreturn memory(argmem: read) }
attributes #8 = { 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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass