; LLVM IR from dhuertas/AES :: aes (rot_word)

; 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 void @rot_word(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i8, align 1
  %4 = alloca i8, align 1
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #2
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i64 0
  %7 = load i8, ptr %6, align 1, !tbaa !9
  store i8 %7, ptr %3, align 1, !tbaa !9
  store i8 0, ptr %4, align 1, !tbaa !9
  br label %8

8:                                                ; preds = %24, %1
  %9 = load i8, ptr %4, align 1, !tbaa !9
  %10 = zext i8 %9 to i32
  %11 = icmp slt i32 %10, 3
  br i1 %11, label %12, label %27

12:                                               ; preds = %8
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = load i8, ptr %4, align 1, !tbaa !9
  %15 = zext i8 %14 to i32
  %16 = add nsw i32 %15, 1
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i8, ptr %13, i64 %17
  %19 = load i8, ptr %18, align 1, !tbaa !9
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = load i8, ptr %4, align 1, !tbaa !9
  %22 = zext i8 %21 to i64
  %23 = getelementptr inbounds i8, ptr %20, i64 %22
  store i8 %19, ptr %23, align 1, !tbaa !9
  br label %24

24:                                               ; preds = %12
  %25 = load i8, ptr %4, align 1, !tbaa !9
  %26 = add i8 %25, 1
  store i8 %26, ptr %4, align 1, !tbaa !9
  br label %8, !llvm.loop !10

27:                                               ; preds = %8
  %28 = load i8, ptr %3, align 1, !tbaa !9
  %29 = load ptr, ptr %2, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i64 3
  store i8 %28, ptr %30, align 1, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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 nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @rot_word(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %scevgep = getelementptr i8, ptr %0, i64 1
  tail call void @llvm.memmove.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(3) %0, ptr noundef nonnull align 1 dereferenceable(3) %scevgep, i64 3, i1 false), !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 3
  store i8 %2, ptr %3, align 1, !tbaa !5
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memmove.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1 immarg) #1

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

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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