; 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
  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
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds i16, ptr %7, i64 0
  %9 = load i16, ptr %8, align 2, !tbaa !9
  %10 = zext i16 %9 to i64
  %11 = add i64 %10, 914778474
  %12 = xor i64 %11, 11
  %13 = trunc i64 %12 to i16
  %14 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  store i16 %13, ptr %14, align 2, !tbaa !9
  store i16 0, ptr %6, align 2, !tbaa !9
  br label %15

15:                                               ; preds = %23, %2
  %16 = load i16, ptr %6, align 2, !tbaa !9
  %17 = zext i16 %16 to i32
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds i16, ptr %18, i64 1
  %20 = load i16, ptr %19, align 2, !tbaa !9
  %21 = zext i16 %20 to i32
  %22 = icmp slt i32 %17, %21
  br i1 %22, label %23, label %40

23:                                               ; preds = %15
  %24 = load i16, ptr %6, align 2, !tbaa !9
  %25 = zext i16 %24 to i64
  %26 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %25
  %27 = load i16, ptr %26, align 2, !tbaa !9
  %28 = zext i16 %27 to i32
  %29 = and i32 %28, 31
  %30 = shl i32 %29, 4
  %31 = load i16, ptr %6, align 2, !tbaa !9
  %32 = zext i16 %31 to i64
  %33 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %32
  %34 = load i16, ptr %33, align 2, !tbaa !9
  %35 = zext i16 %34 to i32
  %36 = or i32 %35, %30
  %37 = trunc i32 %36 to i16
  store i16 %37, ptr %33, align 2, !tbaa !9
  %38 = load i16, ptr %6, align 2, !tbaa !9
  %39 = add i16 %38, 1
  store i16 %39, ptr %6, align 2, !tbaa !9
  br label %15, !llvm.loop !11

40:                                               ; preds = %15
  %41 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %42 = load i16, ptr %41, align 2, !tbaa !9
  %43 = zext i16 %42 to i64
  %44 = add i64 %43, 1047729131
  %45 = shl i64 %44, 7
  %46 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %47 = load i16, ptr %46, align 2, !tbaa !9
  %48 = zext i16 %47 to i64
  %49 = add i64 %48, 1047729131
  %50 = lshr i64 %49, 9
  %51 = or i64 %45, %50
  %52 = trunc i64 %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 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"}


; 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 %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %xtraiter = and i16 %7, 3
  %8 = icmp ult i16 %7, 4
  br i1 %8, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i16 %7, -4
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.sroa.0.07 = phi i16 [ %5, %.lr.ph.preheader.new ], [ %20, %.lr.ph ]
  %niter = phi i16 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %9 = shl i16 %.sroa.0.07, 4
  %10 = and i16 %9, 496
  %11 = or i16 %10, %.sroa.0.07
  %12 = shl i16 %11, 4
  %13 = and i16 %12, 496
  %14 = or i16 %13, %11
  %15 = shl i16 %14, 4
  %16 = and i16 %15, 496
  %17 = or i16 %16, %14
  %18 = shl i16 %17, 4
  %19 = and i16 %18, 496
  %20 = or i16 %19, %17
  %niter.next.3 = add i16 %niter, 4
  %niter.ncmp.3 = icmp eq i16 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi i16 [ poison, %.lr.ph.preheader ], [ %20, %.lr.ph ]
  %.sroa.0.07.unr = phi i16 [ %5, %.lr.ph.preheader ], [ %20, %.lr.ph ]
  %lcmp.mod.not = icmp eq i16 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %.sroa.0.07.epil = phi i16 [ %23, %.lr.ph.epil ], [ %.sroa.0.07.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i16 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %21 = shl i16 %.sroa.0.07.epil, 4
  %22 = and i16 %21, 496
  %23 = or i16 %22, %.sroa.0.07.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 %._crit_edge, label %.lr.ph.epil, !llvm.loop !11

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %2
  %.sroa.0.0.lcssa = phi i16 [ %5, %2 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %23, %.lr.ph.epil ]
  %24 = zext i16 %.sroa.0.0.lcssa to i32
  %25 = add nuw nsw i32 %24, 1047729131
  %26 = shl i32 %25, 7
  %27 = lshr i32 %25, 9
  %28 = or i32 %26, %27
  %29 = trunc i32 %28 to i16
  store i16 %29, ptr %1, align 2, !tbaa !5
  ret void
}

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" }

!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"}


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