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

; 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"

declare void @gmssl_memxor(ptr noundef, ptr noundef, ptr noundef, i64 noundef) #0

declare void @aes_encrypt(ptr noundef, ptr noundef, ptr noundef) #0

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

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

; Function Attrs: nounwind uwtable
define dso_local void @aes_ctr_encrypt(ptr noundef %0, ptr noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4) #2 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca [16 x i8], align 16
  %12 = alloca i64, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store i64 %3, ptr %9, align 8, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %11) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  br label %13

13:                                               ; preds = %22, %5
  %14 = load i64, ptr %9, align 8, !tbaa !9
  %15 = icmp ne i64 %14, 0
  br i1 %15, label %16, label %41

16:                                               ; preds = %13
  %17 = load i64, ptr %9, align 8, !tbaa !9
  %18 = icmp ult i64 %17, 16
  br i1 %18, label %19, label %21

19:                                               ; preds = %16
  %20 = load i64, ptr %9, align 8, !tbaa !9
  br label %22

21:                                               ; preds = %16
  br label %22

22:                                               ; preds = %21, %19
  %23 = phi i64 [ %20, %19 ], [ 16, %21 ]
  store i64 %23, ptr %12, align 8, !tbaa !9
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %7, align 8, !tbaa !5
  %26 = getelementptr inbounds [16 x i8], ptr %11, i64 0, i64 0
  call void @aes_encrypt(ptr noundef %24, ptr noundef %25, ptr noundef %26)
  %27 = load ptr, ptr %10, align 8, !tbaa !5
  %28 = load ptr, ptr %8, align 8, !tbaa !5
  %29 = getelementptr inbounds [16 x i8], ptr %11, i64 0, i64 0
  %30 = load i64, ptr %12, align 8, !tbaa !9
  call void @gmssl_memxor(ptr noundef %27, ptr noundef %28, ptr noundef %29, i64 noundef %30)
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  call void @ctr_incr(ptr noundef %31)
  %32 = load i64, ptr %12, align 8, !tbaa !9
  %33 = load ptr, ptr %8, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i64 %32
  store ptr %34, ptr %8, align 8, !tbaa !5
  %35 = load i64, ptr %12, align 8, !tbaa !9
  %36 = load ptr, ptr %10, align 8, !tbaa !5
  %37 = getelementptr inbounds i8, ptr %36, i64 %35
  store ptr %37, ptr %10, align 8, !tbaa !5
  %38 = load i64, ptr %12, align 8, !tbaa !9
  %39 = load i64, ptr %9, align 8, !tbaa !9
  %40 = sub i64 %39, %38
  store i64 %40, ptr %9, align 8, !tbaa !9
  br label %13, !llvm.loop !11

41:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #3
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden void @ctr_incr(ptr noundef) #2

attributes #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 = { 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 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

declare void @gmssl_memxor(ptr noundef, ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

declare void @aes_encrypt(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

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

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

; Function Attrs: nounwind uwtable
define dso_local void @aes_ctr_encrypt(ptr noundef %0, ptr noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4) local_unnamed_addr #2 {
  %6 = alloca [16 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %6) #4
  %.not16 = icmp eq i64 %3, 0
  br i1 %.not16, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5, %.lr.ph
  %.019 = phi ptr [ %8, %.lr.ph ], [ %2, %5 ]
  %.01418 = phi ptr [ %9, %.lr.ph ], [ %4, %5 ]
  %.01517 = phi i64 [ %10, %.lr.ph ], [ %3, %5 ]
  %7 = call i64 @llvm.umin.i64(i64 %.01517, i64 16)
  call void @aes_encrypt(ptr noundef %0, ptr noundef %1, ptr noundef nonnull %6) #4
  call void @gmssl_memxor(ptr noundef %.01418, ptr noundef %.019, ptr noundef nonnull %6, i64 noundef %7) #4
  call void @ctr_incr(ptr noundef %1)
  %8 = getelementptr inbounds i8, ptr %.019, i64 %7
  %9 = getelementptr inbounds i8, ptr %.01418, i64 %7
  %10 = sub i64 %.01517, %7
  %.not = icmp eq i64 %10, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %6) #4
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden void @ctr_incr(ptr noundef) local_unnamed_addr #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #3

attributes #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 = { 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 speculatable willreturn memory(none) }
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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass