; LLVM IR from quarkslab/crypto-condor :: crypto_condor/primitives/_aes (aes)

; 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.AES_ctx = type { [240 x i8], [16 x i8], i8, i8 }

; 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) #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
declare hidden void @InvCipher(ptr noundef, ptr noundef) #2

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

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

9:                                                ; preds = %28, %3
  %10 = load i64, ptr %7, align 8, !tbaa !9
  %11 = load i64, ptr %6, align 8, !tbaa !9
  %12 = icmp ult i64 %10, %11
  br i1 %12, label %13, label %31

13:                                               ; preds = %9
  %14 = getelementptr inbounds [16 x i8], ptr %8, i64 0, i64 0
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %14, ptr align 1 %15, i64 16, i1 false)
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  call void @InvCipher(ptr noundef %16, ptr noundef %17)
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.AES_ctx, ptr %19, i32 0, i32 1
  %21 = getelementptr inbounds [16 x i8], ptr %20, i64 0, i64 0
  call void @XorBlock(ptr noundef %18, ptr noundef %21)
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.AES_ctx, ptr %22, i32 0, i32 1
  %24 = getelementptr inbounds [16 x i8], ptr %23, i64 0, i64 0
  %25 = getelementptr inbounds [16 x i8], ptr %8, i64 0, i64 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %24, ptr align 16 %25, i64 16, i1 false)
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %26, i64 16
  store ptr %27, ptr %5, align 8, !tbaa !5
  br label %28

28:                                               ; preds = %13
  %29 = load i64, ptr %7, align 8, !tbaa !9
  %30 = add i64 %29, 16
  store i64 %30, ptr %7, align 8, !tbaa !9
  br label %9, !llvm.loop !11

31:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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"

; 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) #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
declare hidden void @InvCipher(ptr noundef, ptr noundef) local_unnamed_addr #2

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

; Function Attrs: nounwind uwtable
define dso_local void @AES_CBC_decrypt_buffer(ptr noundef %0, ptr noundef %1, i64 noundef %2) local_unnamed_addr #2 {
  %4 = alloca [16 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4)
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %5 = getelementptr inbounds i8, ptr %0, i64 240
  br label %6

6:                                                ; preds = %.lr.ph, %6
  %.011 = phi i64 [ 0, %.lr.ph ], [ %8, %6 ]
  %.0910 = phi ptr [ %1, %.lr.ph ], [ %7, %6 ]
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %4, ptr noundef nonnull align 1 dereferenceable(16) %.0910, i64 16, i1 false)
  tail call void @InvCipher(ptr noundef %.0910, ptr noundef %0)
  tail call void @XorBlock(ptr noundef %.0910, ptr noundef nonnull %5)
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(16) %5, ptr noundef nonnull align 16 dereferenceable(16) %4, i64 16, i1 false)
  %7 = getelementptr inbounds i8, ptr %.0910, i64 16
  %8 = add i64 %.011, 16
  %9 = icmp ult i64 %8, %2
  br i1 %9, label %6, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %6, %3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4)
  ret void
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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" }

!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,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass