; LLVM IR from kkan2020/evacc :: firmware/main (tea)

; 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: nounwind uwtable
define dso_local void @encryptBlock(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %10, ptr %9, align 8, !tbaa !5
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load i32, ptr %11, align 4, !tbaa !9
  %13 = add i32 %12, 7
  %14 = udiv i32 %13, 8
  %15 = add i32 %14, 1
  store i32 %15, ptr %7, align 4, !tbaa !9
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = load ptr, ptr %9, align 8, !tbaa !5
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = mul i32 %19, 2
  %21 = sub i32 %20, 1
  %22 = zext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %18, i64 %22
  store i32 %17, ptr %23, align 4, !tbaa !9
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = mul i32 %24, 8
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  store i32 %25, ptr %26, align 4, !tbaa !9
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %27

27:                                               ; preds = %38, %3
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = icmp ult i32 %28, %29
  br i1 %30, label %31, label %41

31:                                               ; preds = %27
  %32 = load ptr, ptr %9, align 8, !tbaa !5
  %33 = load i32, ptr %8, align 4, !tbaa !9
  %34 = mul i32 %33, 2
  %35 = zext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %32, i64 %35
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  call void @encrypt(ptr noundef %36, ptr noundef %37)
  br label %38

38:                                               ; preds = %31
  %39 = load i32, ptr %8, align 4, !tbaa !9
  %40 = add i32 %39, 1
  store i32 %40, ptr %8, align 4, !tbaa !9
  br label %27, !llvm.loop !11

41:                                               ; preds = %27
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret void
}

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

; Function Attrs: nounwind uwtable
declare dso_local void @encrypt(ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"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 void @encryptBlock(ptr noundef %0, ptr nocapture noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = add i32 %4, 7
  %6 = lshr i32 %5, 3
  %7 = add nuw nsw i32 %6, 1
  %8 = shl nuw nsw i32 %7, 1
  %9 = zext nneg i32 %8 to i64
  %10 = getelementptr i32, ptr %0, i64 %9
  %11 = getelementptr i8, ptr %10, i64 -4
  store i32 %4, ptr %11, align 4, !tbaa !5
  %12 = shl i32 %7, 3
  store i32 %12, ptr %1, align 4, !tbaa !5
  %wide.trip.count = zext nneg i32 %7 to i64
  br label %13

13:                                               ; preds = %3, %13
  %indvars.iv = phi i64 [ 0, %3 ], [ %indvars.iv.next, %13 ]
  %.idx = shl nsw i64 %indvars.iv, 3
  %14 = getelementptr inbounds i8, ptr %0, i64 %.idx
  tail call void @encrypt(ptr noundef %14, ptr noundef %2)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %15, label %13, !llvm.loop !9

15:                                               ; preds = %13
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @encrypt(ptr noundef, ptr noundef) local_unnamed_addr #0

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 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass