; LLVM IR from guanzhi/GmSSL :: src (base64)

; 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.BASE64_CTX = type { i32, i32, [80 x i8], i32, i32 }

@.str.1 = external hidden unnamed_addr constant [60 x i8], align 1
@stderr = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@__FUNCTION__.base64_decode_finish = external hidden unnamed_addr constant [21 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 nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @base64_decode_block(ptr noundef, ptr noundef, i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @base64_decode_finish(ptr noundef %0, ptr noundef %1, ptr noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %10 = load ptr, ptr %7, align 8, !tbaa !5
  store i32 0, ptr %10, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.BASE64_CTX, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 4, !tbaa !11
  %14 = icmp ne i32 %13, 0
  br i1 %14, label %15, label %37

15:                                               ; preds = %3
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.BASE64_CTX, ptr %17, i32 0, i32 2
  %19 = getelementptr inbounds [80 x i8], ptr %18, i64 0, i64 0
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.BASE64_CTX, ptr %20, i32 0, i32 0
  %22 = load i32, ptr %21, align 4, !tbaa !11
  %23 = call i32 @base64_decode_block(ptr noundef %16, ptr noundef %19, i32 noundef %22)
  store i32 %23, ptr %8, align 4, !tbaa !9
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = icmp slt i32 %24, 0
  br i1 %25, label %26, label %32

26:                                               ; preds = %15
  br label %27

27:                                               ; preds = %26
  %28 = load ptr, ptr @stderr, align 8, !tbaa !5
  %29 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %28, ptr noundef @.str.2, ptr noundef @.str.1, i32 noundef 370, ptr noundef @__FUNCTION__.base64_decode_finish) #3
  br label %30

30:                                               ; preds = %27
  br label %31

31:                                               ; preds = %30
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %38

32:                                               ; preds = %15
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.BASE64_CTX, ptr %33, i32 0, i32 0
  store i32 0, ptr %34, align 4, !tbaa !11
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  store i32 %35, ptr %36, align 4, !tbaa !9
  store i32 1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %38

37:                                               ; preds = %3
  store i32 1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %38

38:                                               ; preds = %37, %32, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %39 = load i32, ptr %4, align 4
  ret i32 %39
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 = { 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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"", !10, i64 0, !10, i64 4, !7, i64 8, !10, i64 88, !10, i64 92}


; 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"

@.str.1 = external hidden unnamed_addr constant [60 x i8], align 1
@stderr = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [13 x i8], align 1
@__FUNCTION__.base64_decode_finish = external hidden unnamed_addr constant [21 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @base64_decode_block(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @base64_decode_finish(ptr noundef %0, ptr noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #1 {
  store i32 0, ptr %2, align 4, !tbaa !5
  %4 = load i32, ptr %0, align 4, !tbaa !9
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %13, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = tail call i32 @base64_decode_block(ptr noundef %1, ptr noundef nonnull %6, i32 noundef %4)
  %8 = icmp slt i32 %7, 0
  br i1 %8, label %9, label %12

9:                                                ; preds = %5
  %10 = load ptr, ptr @stderr, align 8, !tbaa !11
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.1, i32 noundef 370, ptr noundef nonnull @__FUNCTION__.base64_decode_finish) #2
  br label %13

12:                                               ; preds = %5
  store i32 0, ptr %0, align 4, !tbaa !9
  store i32 %7, ptr %2, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %3, %12, %9
  %.0 = phi i32 [ -1, %9 ], [ 1, %12 ], [ 1, %3 ]
  ret i32 %.0
}

attributes #0 = { 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 #1 = { 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 #2 = { cold 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, !6, i64 0}
!10 = !{!"", !6, i64 0, !6, i64 4, !7, i64 8, !6, i64 88, !6, i64 92}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass