; LLVM IR from kcchu/rust-tweetnacl :: tweetnacl (crypto_secretbox_xsalsa20poly1305_tweet)

; 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"

; 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 uwtable
declare dso_local i32 @crypto_stream_xsalsa20_tweet_xor(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @crypto_onetimeauth_poly1305_tweet(ptr noundef, ptr noundef, i64 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @crypto_secretbox_xsalsa20poly1305_tweet(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4) #1 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store i64 %2, ptr %9, align 8, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %14 = load i64, ptr %9, align 8, !tbaa !9
  %15 = icmp ult i64 %14, 32
  br i1 %15, label %16, label %17

16:                                               ; preds = %5
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %44

17:                                               ; preds = %5
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = load i64, ptr %9, align 8, !tbaa !9
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = load ptr, ptr %11, align 8, !tbaa !5
  %23 = call i32 @crypto_stream_xsalsa20_tweet_xor(ptr noundef %18, ptr noundef %19, i64 noundef %20, ptr noundef %21, ptr noundef %22)
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %24, i64 16
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %26, i64 32
  %28 = load i64, ptr %9, align 8, !tbaa !9
  %29 = sub i64 %28, 32
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = call i32 @crypto_onetimeauth_poly1305_tweet(ptr noundef %25, ptr noundef %27, i64 noundef %29, ptr noundef %30)
  store i32 0, ptr %12, align 4, !tbaa !11
  br label %32

32:                                               ; preds = %40, %17
  %33 = load i32, ptr %12, align 4, !tbaa !11
  %34 = icmp slt i32 %33, 16
  br i1 %34, label %35, label %43

35:                                               ; preds = %32
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = load i32, ptr %12, align 4, !tbaa !11
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i8, ptr %36, i64 %38
  store i8 0, ptr %39, align 1, !tbaa !13
  br label %40

40:                                               ; preds = %35
  %41 = load i32, ptr %12, align 4, !tbaa !11
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %12, align 4, !tbaa !11
  br label %32, !llvm.loop !14

43:                                               ; preds = %32
  store i32 0, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %44

44:                                               ; preds = %43, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  %45 = load i32, ptr %6, align 4
  ret i32 %45
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; 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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @crypto_stream_xsalsa20_tweet_xor(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @crypto_onetimeauth_poly1305_tweet(ptr noundef, ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @crypto_secretbox_xsalsa20poly1305_tweet(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #0 {
  %6 = icmp ult i64 %2, 32
  br i1 %6, label %.loopexit, label %.loopexit.loopexit

.loopexit.loopexit:                               ; preds = %5
  %7 = tail call i32 @crypto_stream_xsalsa20_tweet_xor(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4)
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  %9 = getelementptr inbounds i8, ptr %0, i64 32
  %10 = add i64 %2, -32
  %11 = tail call i32 @crypto_onetimeauth_poly1305_tweet(ptr noundef nonnull %8, ptr noundef nonnull %9, i64 noundef %10, ptr noundef %0)
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 1 dereferenceable(16) %0, i8 0, i64 16, i1 false), !tbaa !5
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit, %5
  %.014 = phi i32 [ -1, %5 ], [ 0, %.loopexit.loopexit ]
  ret i32 %.014
}

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

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass,TailCallElimPass