; LLVM IR from X-3306/Wireless-Signal-Modulation-with-Mechanical-Vibrations :: modulation (encryptSignal)

; 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: nounwind uwtable
define dso_local void @encryptSignal(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %7, ptr %6, align 8, !tbaa !5
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %29, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = sext i32 %9 to i64
  %11 = icmp ult i64 %10, 8
  br i1 %11, label %12, label %32

12:                                               ; preds = %8
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !11
  %18 = zext i8 %17 to i32
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = srem i32 %20, 8
  %22 = ashr i32 %19, %21
  %23 = xor i32 %18, %22
  %24 = trunc i32 %23 to i8
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i8, ptr %25, i64 %27
  store i8 %24, ptr %28, align 1, !tbaa !11
  br label %29

29:                                               ; preds = %12
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !12

32:                                               ; preds = %8
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = load double, ptr %33, align 8, !tbaa !14
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  store double %34, ptr %35, align 8, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

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 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{!15, !15, i64 0}
!15 = !{!"double", !7, i64 0}


; 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 @encryptSignal(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = lshr i32 %1, 1
  %4 = lshr i32 %1, 2
  %5 = lshr i32 %1, 3
  %6 = lshr i32 %1, 4
  %7 = lshr i32 %1, 5
  %8 = lshr i32 %1, 6
  %9 = lshr i32 %1, 7
  %10 = load <8 x i8>, ptr %0, align 1, !tbaa !5
  %11 = insertelement <4 x i32> poison, i32 %1, i64 0
  %12 = insertelement <4 x i32> %11, i32 %3, i64 1
  %13 = insertelement <4 x i32> %12, i32 %4, i64 2
  %14 = insertelement <4 x i32> %13, i32 %5, i64 3
  %15 = trunc <4 x i32> %14 to <4 x i8>
  %16 = shufflevector <4 x i8> %15, <4 x i8> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
  %17 = trunc i32 %6 to i8
  %18 = insertelement <8 x i8> %16, i8 %17, i64 4
  %19 = trunc i32 %7 to i8
  %20 = insertelement <8 x i8> %18, i8 %19, i64 5
  %21 = trunc i32 %8 to i8
  %22 = insertelement <8 x i8> %20, i8 %21, i64 6
  %23 = trunc i32 %9 to i8
  %24 = insertelement <8 x i8> %22, i8 %23, i64 7
  %25 = xor <8 x i8> %10, %24
  store <8 x i8> %25, ptr %0, align 1, !tbaa !5
  ret void
}

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" }

!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,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass