; 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
  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
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds i16, ptr %8, i64 0
  %10 = load i16, ptr %9, align 2, !tbaa !9
  %11 = zext i16 %10 to i64
  %12 = add i64 %11, 914778474
  %13 = xor i64 %12, 11
  %14 = trunc i64 %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 = %50, %2
  %17 = load i16, ptr %7, align 2, !tbaa !9
  %18 = zext i16 %17 to i32
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds i16, ptr %19, i64 1
  %21 = load i16, ptr %20, align 2, !tbaa !9
  %22 = zext i16 %21 to i32
  %23 = icmp slt i32 %18, %22
  br i1 %23, label %24, label %53

24:                                               ; preds = %16
  store i16 0, ptr %6, align 2, !tbaa !9
  br label %25

25:                                               ; preds = %33, %24
  %26 = load i16, ptr %6, align 2, !tbaa !9
  %27 = zext i16 %26 to i32
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds i16, ptr %28, i64 1
  %30 = load i16, ptr %29, align 2, !tbaa !9
  %31 = zext i16 %30 to i32
  %32 = icmp slt i32 %27, %31
  br i1 %32, label %33, label %50

33:                                               ; preds = %25
  %34 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %35 = load i16, ptr %34, align 2, !tbaa !9
  %36 = zext i16 %35 to i32
  %37 = and i32 %36, 63
  %38 = shl i32 %37, 4
  %39 = load i16, ptr %6, align 2, !tbaa !9
  %40 = zext i16 %39 to i64
  %41 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %40
  %42 = load i16, ptr %41, align 2, !tbaa !9
  %43 = zext i16 %42 to i32
  %44 = or i32 %43, %38
  %45 = trunc i32 %44 to i16
  store i16 %45, ptr %41, align 2, !tbaa !9
  %46 = load i16, ptr %6, align 2, !tbaa !9
  %47 = zext i16 %46 to i64
  %48 = add i64 %47, 2
  %49 = trunc i64 %48 to i16
  store i16 %49, ptr %6, align 2, !tbaa !9
  br label %25, !llvm.loop !11

50:                                               ; preds = %25
  %51 = load i16, ptr %7, align 2, !tbaa !9
  %52 = add i16 %51, 1
  store i16 %52, ptr %7, align 2, !tbaa !9
  br label %16, !llvm.loop !13

53:                                               ; preds = %16
  %54 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %55 = load i16, ptr %54, align 2, !tbaa !9
  %56 = zext i16 %55 to i32
  %57 = ashr i32 %56, 1
  %58 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %59 = load i16, ptr %58, align 2, !tbaa !9
  %60 = zext i16 %59 to i32
  %61 = shl i32 %60, 15
  %62 = or i32 %57, %61
  %63 = trunc i32 %62 to i16
  %64 = load ptr, ptr %4, align 8, !tbaa !5
  %65 = getelementptr inbounds i16, ptr %64, i64 0
  store i16 %63, ptr %65, align 2, !tbaa !9
  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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @RandomFunc(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load i16, ptr %0, align 2, !tbaa !5
  %4 = add i16 %3, 26986
  %5 = xor i16 %4, 11
  %6 = getelementptr inbounds i8, ptr %0, i64 2
  %7 = load i16, ptr %6, align 2, !tbaa !5
  %.not = icmp eq i16 %7, 0
  br i1 %.not, label %._crit_edge, label %.preheader.preheader

.preheader.preheader:                             ; preds = %2
  %8 = add i16 %7, -1
  %9 = lshr i16 %8, 1
  %10 = add nuw i16 %9, 1
  %xtraiter = and i16 %10, 3
  %11 = icmp ult i16 %7, 7
  %unroll_iter = and i16 %10, -4
  %lcmp.mod.not = icmp eq i16 %xtraiter, 0
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %.epilog-lcssa
  %.013 = phi i16 [ %27, %.epilog-lcssa ], [ 0, %.preheader.preheader ]
  %.sroa.0.012 = phi i16 [ %.lcssa, %.epilog-lcssa ], [ %5, %.preheader.preheader ]
  br i1 %11, label %.unr-lcssa, label %.preheader.new

.preheader.new:                                   ; preds = %.preheader, %.preheader.new
  %.sroa.0.110 = phi i16 [ %23, %.preheader.new ], [ %.sroa.0.012, %.preheader ]
  %niter = phi i16 [ %niter.next.3, %.preheader.new ], [ 0, %.preheader ]
  %12 = shl i16 %.sroa.0.110, 4
  %13 = and i16 %12, 1008
  %14 = or i16 %13, %.sroa.0.110
  %15 = shl i16 %14, 4
  %16 = and i16 %15, 1008
  %17 = or i16 %16, %14
  %18 = shl i16 %17, 4
  %19 = and i16 %18, 1008
  %20 = or i16 %19, %17
  %21 = shl i16 %20, 4
  %22 = and i16 %21, 1008
  %23 = or i16 %22, %20
  %niter.next.3 = add i16 %niter, 4
  %niter.ncmp.3.not = icmp eq i16 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3.not, label %.unr-lcssa, label %.preheader.new, !llvm.loop !9

.unr-lcssa:                                       ; preds = %.preheader.new, %.preheader
  %.lcssa.ph = phi i16 [ poison, %.preheader ], [ %23, %.preheader.new ]
  %.sroa.0.110.unr = phi i16 [ %.sroa.0.012, %.preheader ], [ %23, %.preheader.new ]
  br i1 %lcmp.mod.not, label %.epilog-lcssa, label %.epil.preheader

.epil.preheader:                                  ; preds = %.unr-lcssa, %.epil.preheader
  %.sroa.0.110.epil = phi i16 [ %26, %.epil.preheader ], [ %.sroa.0.110.unr, %.unr-lcssa ]
  %epil.iter = phi i16 [ %epil.iter.next, %.epil.preheader ], [ 0, %.unr-lcssa ]
  %24 = shl i16 %.sroa.0.110.epil, 4
  %25 = and i16 %24, 1008
  %26 = or i16 %25, %.sroa.0.110.epil
  %epil.iter.next = add i16 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i16 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %.epilog-lcssa, label %.epil.preheader, !llvm.loop !11

.epilog-lcssa:                                    ; preds = %.epil.preheader, %.unr-lcssa
  %.lcssa = phi i16 [ %.lcssa.ph, %.unr-lcssa ], [ %26, %.epil.preheader ]
  %27 = add nuw i16 %.013, 1
  %exitcond.not = icmp eq i16 %27, %7
  br i1 %exitcond.not, label %._crit_edge, label %.preheader, !llvm.loop !13

._crit_edge:                                      ; preds = %.epilog-lcssa, %2
  %.sroa.0.0.lcssa = phi i16 [ %5, %2 ], [ %.lcssa, %.epilog-lcssa ]
  %28 = tail call i16 @llvm.fshl.i16(i16 %.sroa.0.0.lcssa, i16 %.sroa.0.0.lcssa, i16 15)
  store i16 %28, ptr %1, align 2, !tbaa !5
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i16 @llvm.fshl.i16(i16, i16, i16) #1

attributes #0 = { nofree norecurse nosync nounwind 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.unroll.disable"}
!13 = distinct !{!13, !10}


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