; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl (random)

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

; Function Attrs: nounwind uwtable
define dso_local void @vl_rand_permute_indexes(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %10 = load i64, ptr %6, align 8, !tbaa !9
  %11 = sub i64 %10, 1
  store i64 %11, ptr %7, align 8, !tbaa !9
  br label %12

12:                                               ; preds = %37, %3
  %13 = load i64, ptr %7, align 8, !tbaa !9
  %14 = icmp sgt i64 %13, 0
  br i1 %14, label %15, label %40

15:                                               ; preds = %12
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i64, ptr %7, align 8, !tbaa !9
  %18 = add nsw i64 %17, 1
  %19 = call i64 @vl_rand_uindex(ptr noundef %16, i64 noundef %18)
  %20 = trunc i64 %19 to i32
  %21 = sext i32 %20 to i64
  store i64 %21, ptr %8, align 8, !tbaa !9
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load i64, ptr %7, align 8, !tbaa !9
  %24 = getelementptr inbounds i64, ptr %22, i64 %23
  %25 = load i64, ptr %24, align 8, !tbaa !9
  store i64 %25, ptr %9, align 8, !tbaa !9
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load i64, ptr %8, align 8, !tbaa !9
  %28 = getelementptr inbounds i64, ptr %26, i64 %27
  %29 = load i64, ptr %28, align 8, !tbaa !9
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load i64, ptr %7, align 8, !tbaa !9
  %32 = getelementptr inbounds i64, ptr %30, i64 %31
  store i64 %29, ptr %32, align 8, !tbaa !9
  %33 = load i64, ptr %9, align 8, !tbaa !9
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = load i64, ptr %8, align 8, !tbaa !9
  %36 = getelementptr inbounds i64, ptr %34, i64 %35
  store i64 %33, ptr %36, align 8, !tbaa !9
  br label %37

37:                                               ; preds = %15
  %38 = load i64, ptr %7, align 8, !tbaa !9
  %39 = add nsw i64 %38, -1
  store i64 %39, ptr %7, align 8, !tbaa !9
  br label %12, !llvm.loop !11

40:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @vl_rand_uindex(ptr noundef, i64 noundef) #2

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 = { inlinehint 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 #3 = { 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 = !{!"long long", !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: nounwind uwtable
define dso_local void @vl_rand_permute_indexes(ptr noundef %0, ptr nocapture noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.013 = add i64 %2, -1
  %4 = icmp sgt i64 %.013, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.015 = phi i64 [ %.0, %.lr.ph ], [ %.013, %3 ]
  %.0.in14 = phi i64 [ %.015, %.lr.ph ], [ %2, %3 ]
  %5 = tail call i64 @vl_rand_uindex(ptr noundef %0, i64 noundef %.0.in14)
  %sext = shl i64 %5, 32
  %6 = getelementptr inbounds i64, ptr %1, i64 %.015
  %7 = load i64, ptr %6, align 8, !tbaa !5
  %8 = ashr exact i64 %sext, 29
  %9 = getelementptr inbounds i8, ptr %1, i64 %8
  %10 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %10, ptr %6, align 8, !tbaa !5
  store i64 %7, ptr %9, align 8, !tbaa !5
  %.0 = add nsw i64 %.015, -1
  %11 = icmp ugt i64 %.015, 1
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @vl_rand_uindex(ptr noundef, i64 noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { inlinehint 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" }

!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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass