; 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 i32
  %11 = add nsw i32 %10, 2885
  %12 = trunc i32 %11 to i16
  %13 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  store i16 %12, ptr %13, align 2, !tbaa !9
  store i16 0, ptr %6, align 2, !tbaa !9
  br label %14

14:                                               ; preds = %56, %2
  %15 = load i16, ptr %6, align 2, !tbaa !9
  %16 = zext i16 %15 to i32
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds i16, ptr %17, i64 1
  %19 = load i16, ptr %18, align 2, !tbaa !9
  %20 = zext i16 %19 to i32
  %21 = icmp slt i32 %16, %20
  br i1 %21, label %22, label %61

22:                                               ; preds = %14
  %23 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %24 = load i16, ptr %23, align 2, !tbaa !9
  %25 = zext i16 %24 to i32
  %26 = load i16, ptr %6, align 2, !tbaa !9
  %27 = zext i16 %26 to i32
  %28 = icmp sgt i32 %25, %27
  br i1 %28, label %56, label %29

29:                                               ; preds = %22
  %30 = load i16, ptr %6, align 2, !tbaa !9
  %31 = zext i16 %30 to i64
  %32 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %31
  %33 = load i16, ptr %32, align 2, !tbaa !9
  %34 = zext i16 %33 to i32
  %35 = load i16, ptr %6, align 2, !tbaa !9
  %36 = zext i16 %35 to i64
  %37 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %36
  %38 = load i16, ptr %37, align 2, !tbaa !9
  %39 = zext i16 %38 to i32
  %40 = add nsw i32 %34, %39
  %41 = trunc i32 %40 to i16
  %42 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  store i16 %41, ptr %42, align 2, !tbaa !9
  %43 = load i16, ptr %6, align 2, !tbaa !9
  %44 = zext i16 %43 to i64
  %45 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %44
  %46 = load i16, ptr %45, align 2, !tbaa !9
  %47 = zext i16 %46 to i32
  %48 = load i16, ptr %6, align 2, !tbaa !9
  %49 = zext i16 %48 to i64
  %50 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 %49
  %51 = load i16, ptr %50, align 2, !tbaa !9
  %52 = zext i16 %51 to i32
  %53 = add nsw i32 %47, %52
  %54 = trunc i32 %53 to i16
  %55 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  store i16 %54, ptr %55, align 2, !tbaa !9
  br label %56

56:                                               ; preds = %29, %22
  %57 = load i16, ptr %6, align 2, !tbaa !9
  %58 = zext i16 %57 to i64
  %59 = add i64 %58, 2
  %60 = trunc i64 %59 to i16
  store i16 %60, ptr %6, align 2, !tbaa !9
  br label %14, !llvm.loop !11

61:                                               ; preds = %14
  %62 = getelementptr inbounds [1 x i16], ptr %5, i64 0, i64 0
  %63 = load i16, ptr %62, align 2, !tbaa !9
  %64 = zext i16 %63 to i64
  %65 = add i64 %64, 1039116836
  %66 = add i64 %65, 60659
  %67 = trunc i64 %66 to i16
  %68 = load ptr, ptr %4, align 8, !tbaa !5
  %69 = getelementptr inbounds i16, ptr %68, i64 0
  store i16 %67, ptr %69, 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, 2885
  %5 = getelementptr inbounds i8, ptr %0, i64 2
  %6 = load i16, ptr %5, align 2, !tbaa !5
  %.not = icmp eq i16 %6, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %7 = add i16 %6, -1
  %8 = lshr i16 %7, 1
  %9 = add nuw i16 %8, 1
  %xtraiter = and i16 %9, 3
  %10 = icmp ult i16 %6, 7
  br i1 %10, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i16 %9, -4
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.013 = phi i16 [ 0, %.lr.ph.preheader.new ], [ %22, %.lr.ph ]
  %.sroa.0.012 = phi i16 [ %4, %.lr.ph.preheader.new ], [ %spec.select.3, %.lr.ph ]
  %niter = phi i16 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %11 = icmp ugt i16 %.sroa.0.012, %.013
  %12 = shl i16 %.sroa.0.012, 2
  %spec.select = select i1 %11, i16 %.sroa.0.012, i16 %12
  %13 = or disjoint i16 %.013, 2
  %14 = icmp ugt i16 %spec.select, %13
  %15 = shl i16 %spec.select, 2
  %spec.select.1 = select i1 %14, i16 %spec.select, i16 %15
  %16 = or disjoint i16 %.013, 4
  %17 = icmp ugt i16 %spec.select.1, %16
  %18 = shl i16 %spec.select.1, 2
  %spec.select.2 = select i1 %17, i16 %spec.select.1, i16 %18
  %19 = or disjoint i16 %.013, 6
  %20 = icmp ugt i16 %spec.select.2, %19
  %21 = shl i16 %spec.select.2, 2
  %spec.select.3 = select i1 %20, i16 %spec.select.2, i16 %21
  %22 = add nuw i16 %.013, 8
  %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 %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %spec.select.lcssa.ph = phi i16 [ poison, %.lr.ph.preheader ], [ %spec.select.3, %.lr.ph ]
  %.013.unr = phi i16 [ 0, %.lr.ph.preheader ], [ %22, %.lr.ph ]
  %.sroa.0.012.unr = phi i16 [ %4, %.lr.ph.preheader ], [ %spec.select.3, %.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
  %.013.epil = phi i16 [ %25, %.lr.ph.epil ], [ %.013.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.sroa.0.012.epil = phi i16 [ %spec.select.epil, %.lr.ph.epil ], [ %.sroa.0.012.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i16 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %23 = icmp ugt i16 %.sroa.0.012.epil, %.013.epil
  %24 = shl i16 %.sroa.0.012.epil, 2
  %spec.select.epil = select i1 %23, i16 %.sroa.0.012.epil, i16 %24
  %25 = add nuw i16 %.013.epil, 2
  %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 [ %4, %2 ], [ %spec.select.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %spec.select.epil, %.lr.ph.epil ]
  %26 = add i16 %.sroa.0.0.lcssa, -26857
  store i16 %26, 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: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass