; LLVM IR from tum-i4/obfuscation-benchmarks :: tigress-generated-programs (RandomFunc)

; 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 @RandomFunc(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca [1 x i16], align 2
  %6 = alloca i16, align 2
  %7 = alloca i16, align 2
  %8 = alloca i8, align 1
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 2, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 2, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 2, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #2
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds i16, ptr %9, i64 0
  %11 = load i16, ptr %10, align 2, !tbaa !9
  %12 = zext i16 %11 to i32
  %13 = xor i32 %12, 7387
  %14 = trunc i32 %13 to i16
  %15 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  store i16 %14, ptr %15, align 2, !tbaa !9
  store i16 0, ptr %7, align 2, !tbaa !9
  br label %16

16:                                               ; preds = %41, %2
  %17 = load i16, ptr %7, align 2, !tbaa !9
  %18 = zext i16 %17 to i64
  %19 = icmp ult i64 %18, 1
  br i1 %19, label %20, label %46

20:                                               ; preds = %16
  store i16 0, ptr %6, align 2, !tbaa !9
  br label %21

21:                                               ; preds = %25, %20
  %22 = load i16, ptr %6, align 2, !tbaa !9
  %23 = zext i16 %22 to i64
  %24 = icmp ult i64 %23, 1
  br i1 %24, label %25, label %41

25:                                               ; preds = %21
  %26 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %27 = getelementptr inbounds i8, ptr %26, i64 1
  %28 = load i8, ptr %27, align 1, !tbaa !11
  store i8 %28, ptr %8, align 1, !tbaa !11
  %29 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %30 = getelementptr inbounds i8, ptr %29, i64 0
  %31 = load i8, ptr %30, align 1, !tbaa !11
  %32 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %33 = getelementptr inbounds i8, ptr %32, i64 1
  store i8 %31, ptr %33, align 1, !tbaa !11
  %34 = load i8, ptr %8, align 1, !tbaa !11
  %35 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %36 = getelementptr inbounds i8, ptr %35, i64 0
  store i8 %34, ptr %36, align 1, !tbaa !11
  %37 = load i16, ptr %6, align 2, !tbaa !9
  %38 = zext i16 %37 to i64
  %39 = add i64 %38, 2
  %40 = trunc i64 %39 to i16
  store i16 %40, ptr %6, align 2, !tbaa !9
  br label %21, !llvm.loop !12

41:                                               ; preds = %21
  %42 = load i16, ptr %7, align 2, !tbaa !9
  %43 = zext i16 %42 to i64
  %44 = add i64 %43, 2
  %45 = trunc i64 %44 to i16
  store i16 %45, ptr %7, align 2, !tbaa !9
  br label %16, !llvm.loop !14

46:                                               ; preds = %16
  %47 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %48 = load i16, ptr %47, align 2, !tbaa !9
  %49 = zext i16 %48 to i32
  %50 = ashr i32 %49, 1
  %51 = xor i32 %50, 26980
  %52 = trunc i32 %51 to i16
  %53 = load ptr, ptr %4, align 8, !tbaa !5
  %54 = getelementptr inbounds i16, ptr %53, i64 0
  store i16 %52, ptr %54, align 2, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 2, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 2, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 2, 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 = !{!"short", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}


; 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 @RandomFunc(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
.preheader:
  %2 = load i16, ptr %0, align 2, !tbaa !5
  %3 = xor i16 %2, 7387
  %.sroa.0.0.insert.insert = tail call i16 @llvm.bswap.i16(i16 %3)
  %4 = lshr i16 %.sroa.0.0.insert.insert, 1
  %5 = xor i16 %4, 26980
  store i16 %5, ptr %1, align 2, !tbaa !5
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i16 @llvm.bswap.i16(i16) #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 nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass