; LLVM IR from openssl/openssl :: crypto/modes (cfb128)

; 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 hidden void @cfbr_encrypt_block(ptr noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @CRYPTO_cfb128_8_encrypt(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4, ptr noundef %5, i32 noundef %6, ptr noundef %7) #1 {
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca ptr, align 8
  %13 = alloca ptr, align 8
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  %16 = alloca ptr, align 8
  %17 = alloca i64, align 8
  store ptr %0, ptr %9, align 8, !tbaa !5
  store ptr %1, ptr %10, align 8, !tbaa !5
  store i64 %2, ptr %11, align 8, !tbaa !9
  store ptr %3, ptr %12, align 8, !tbaa !5
  store ptr %4, ptr %13, align 8, !tbaa !5
  store ptr %5, ptr %14, align 8, !tbaa !5
  store i32 %6, ptr %15, align 4, !tbaa !11
  store ptr %7, ptr %16, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #2
  store i64 0, ptr %17, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %33, %8
  %19 = load i64, ptr %17, align 8, !tbaa !9
  %20 = load i64, ptr %11, align 8, !tbaa !9
  %21 = icmp ult i64 %19, %20
  br i1 %21, label %22, label %36

22:                                               ; preds = %18
  %23 = load ptr, ptr %9, align 8, !tbaa !5
  %24 = load i64, ptr %17, align 8, !tbaa !9
  %25 = getelementptr inbounds i8, ptr %23, i64 %24
  %26 = load ptr, ptr %10, align 8, !tbaa !5
  %27 = load i64, ptr %17, align 8, !tbaa !9
  %28 = getelementptr inbounds i8, ptr %26, i64 %27
  %29 = load ptr, ptr %12, align 8, !tbaa !5
  %30 = load ptr, ptr %13, align 8, !tbaa !5
  %31 = load i32, ptr %15, align 4, !tbaa !11
  %32 = load ptr, ptr %16, align 8, !tbaa !5
  call void @cfbr_encrypt_block(ptr noundef %25, ptr noundef %28, i32 noundef 8, ptr noundef %29, ptr noundef %30, i32 noundef %31, ptr noundef %32)
  br label %33

33:                                               ; preds = %22
  %34 = load i64, ptr %17, align 8, !tbaa !9
  %35 = add i64 %34, 1
  store i64 %35, ptr %17, align 8, !tbaa !9
  br label %18, !llvm.loop !13

36:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #2
  ret void
}

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", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 hidden void @cfbr_encrypt_block(ptr noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @CRYPTO_cfb128_8_encrypt(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4, ptr nocapture noundef readnone %5, i32 noundef %6, ptr noundef %7) local_unnamed_addr #0 {
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %8, %.lr.ph
  %.010 = phi i64 [ %11, %.lr.ph ], [ 0, %8 ]
  %9 = getelementptr inbounds i8, ptr %0, i64 %.010
  %10 = getelementptr inbounds i8, ptr %1, i64 %.010
  tail call void @cfbr_encrypt_block(ptr noundef %9, ptr noundef %10, i32 noundef 8, ptr noundef %3, ptr noundef %4, i32 noundef %6, ptr noundef %7)
  %11 = add nuw i64 %.010, 1
  %exitcond.not = icmp eq i64 %11, %2
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %8
  ret void
}

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" }

!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: CorrelatedValuePropagationPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass