; LLVM IR from trustwallet/wallet-core :: trezor-crypto/crypto/aes (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"

; 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
define dso_local i32 @aes_ecb_decrypt(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %12 = load i32, ptr %8, align 4, !tbaa !9
  %13 = ashr i32 %12, 4
  store i32 %13, ptr %10, align 4, !tbaa !9
  %14 = load i32, ptr %8, align 4, !tbaa !9
  %15 = and i32 %14, 15
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %17, label %18

17:                                               ; preds = %4
  store i32 1, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %36

18:                                               ; preds = %4
  br label %19

19:                                               ; preds = %30, %18
  %20 = load i32, ptr %10, align 4, !tbaa !9
  %21 = add nsw i32 %20, -1
  store i32 %21, ptr %10, align 4, !tbaa !9
  %22 = icmp ne i32 %20, 0
  br i1 %22, label %23, label %35

23:                                               ; preds = %19
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %7, align 8, !tbaa !5
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = call i32 @aes_decrypt(ptr noundef %24, ptr noundef %25, ptr noundef %26)
  %28 = icmp ne i32 %27, 0
  br i1 %28, label %29, label %30

29:                                               ; preds = %23
  store i32 1, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %36

30:                                               ; preds = %23
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i64 16
  store ptr %32, ptr %6, align 8, !tbaa !5
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i64 16
  store ptr %34, ptr %7, align 8, !tbaa !5
  br label %19, !llvm.loop !11

35:                                               ; preds = %19
  store i32 0, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %36

36:                                               ; preds = %35, %29, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  %37 = load i32, ptr %5, align 4
  ret i32 %37
}

declare i32 @aes_decrypt(ptr noundef, ptr noundef, ptr noundef) #2

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 = { "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 = 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: nounwind uwtable
define dso_local range(i32 0, 2) i32 @aes_ecb_decrypt(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) local_unnamed_addr #0 {
  %5 = and i32 %2, 15
  %.not = icmp eq i32 %5, 0
  br i1 %.not, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %4
  %.not1113 = icmp ult i32 %2, 16
  br i1 %.not1113, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %.preheader
  %6 = ashr exact i32 %2, 4
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %8
  %.in = phi i32 [ %9, %8 ], [ %6, %.lr.ph.preheader ]
  %.0915 = phi ptr [ %10, %8 ], [ %0, %.lr.ph.preheader ]
  %.01014 = phi ptr [ %11, %8 ], [ %1, %.lr.ph.preheader ]
  %7 = tail call i32 @aes_decrypt(ptr noundef %.0915, ptr noundef %.01014, ptr noundef %3) #2
  %.not12 = icmp eq i32 %7, 0
  br i1 %.not12, label %8, label %.loopexit

8:                                                ; preds = %.lr.ph
  %9 = add nsw i32 %.in, -1
  %10 = getelementptr inbounds i8, ptr %.0915, i64 16
  %11 = getelementptr inbounds i8, ptr %.01014, i64 16
  %.not11 = icmp eq i32 %9, 0
  br i1 %.not11, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %8, %.preheader, %4
  %.08 = phi i32 [ 1, %4 ], [ 0, %.preheader ], [ 1, %.lr.ph ], [ 0, %8 ]
  ret i32 %.08
}

declare i32 @aes_decrypt(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #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 = { "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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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