; LLVM IR from CLASS-SZ/class_sz :: class-sz/tools (r8lib)

; 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
declare dso_local i32 @i4_uniform_ab(i32 noundef, i32 noundef, ptr noundef) #1

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @perm1_uniform_new(i32 noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = mul i64 %10, 4
  %12 = call noalias ptr @malloc(i64 noundef %11) #4
  store ptr %12, ptr %8, align 8, !tbaa !9
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %24, %2
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %17, label %27

17:                                               ; preds = %13
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  %20 = load ptr, ptr %8, align 8, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  store i32 %19, ptr %23, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %17
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %5, align 4, !tbaa !5
  br label %13, !llvm.loop !11

27:                                               ; preds = %13
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %57, %27
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = load i32, ptr %3, align 4, !tbaa !5
  %31 = icmp slt i32 %29, %30
  br i1 %31, label %32, label %60

32:                                               ; preds = %28
  %33 = load i32, ptr %5, align 4, !tbaa !5
  %34 = load i32, ptr %3, align 4, !tbaa !5
  %35 = sub nsw i32 %34, 1
  %36 = load ptr, ptr %4, align 8, !tbaa !9
  %37 = call i32 @i4_uniform_ab(i32 noundef %33, i32 noundef %35, ptr noundef %36)
  store i32 %37, ptr %6, align 4, !tbaa !5
  %38 = load ptr, ptr %8, align 8, !tbaa !9
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %38, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !5
  store i32 %42, ptr %7, align 4, !tbaa !5
  %43 = load ptr, ptr %8, align 8, !tbaa !9
  %44 = load i32, ptr %6, align 4, !tbaa !5
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds i32, ptr %43, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !5
  %48 = load ptr, ptr %8, align 8, !tbaa !9
  %49 = load i32, ptr %5, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %48, i64 %50
  store i32 %47, ptr %51, align 4, !tbaa !5
  %52 = load i32, ptr %7, align 4, !tbaa !5
  %53 = load ptr, ptr %8, align 8, !tbaa !9
  %54 = load i32, ptr %6, align 4, !tbaa !5
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds i32, ptr %53, i64 %55
  store i32 %52, ptr %56, align 4, !tbaa !5
  br label %57

57:                                               ; preds = %32
  %58 = load i32, ptr %5, align 4, !tbaa !5
  %59 = add nsw i32 %58, 1
  store i32 %59, ptr %5, align 4, !tbaa !5
  br label %28, !llvm.loop !13

60:                                               ; preds = %28
  %61 = load ptr, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret ptr %61
}

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 allocsize(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 }
attributes #4 = { nounwind allocsize(0) }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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: nounwind uwtable
declare dso_local i32 @i4_uniform_ab(i32 noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @perm1_uniform_new(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = sext i32 %0 to i64
  %4 = shl nsw i64 %3, 2
  %5 = tail call noalias ptr @malloc(i64 noundef %4) #2
  %6 = icmp sgt i32 %0, 0
  br i1 %6, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %0 to i64
  %min.iters.check = icmp ult i32 %0, 8
  br i1 %min.iters.check, label %.lr.ph.preheader33, label %vector.ph

.lr.ph.preheader33:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.ind = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
  %7 = getelementptr inbounds i32, ptr %5, i64 %index
  %8 = trunc <4 x i64> %vec.ind to <4 x i32>
  %9 = add <4 x i32> %8, <i32 1, i32 1, i32 1, i32 1>
  %10 = trunc <4 x i64> %vec.ind to <4 x i32>
  %11 = add <4 x i32> %10, <i32 5, i32 5, i32 5, i32 5>
  %12 = getelementptr inbounds i8, ptr %7, i64 16
  store <4 x i32> %9, ptr %7, align 4, !tbaa !5
  store <4 x i32> %11, ptr %12, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %vec.ind.next = add <4 x i64> %vec.ind, <i64 8, i64 8, i64 8, i64 8>
  %13 = icmp eq i64 %index.next, %n.vec
  br i1 %13, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %.preheader, label %.lr.ph.preheader33

.preheader:                                       ; preds = %.lr.ph, %middle.block
  br i1 %6, label %.lr.ph25, label %._crit_edge

.lr.ph25:                                         ; preds = %.preheader
  %14 = add nsw i32 %0, -1
  %wide.trip.count30 = zext nneg i32 %0 to i64
  br label %17

.lr.ph:                                           ; preds = %.lr.ph.preheader33, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader33 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv
  %16 = trunc nuw nsw i64 %indvars.iv.next to i32
  store i32 %16, ptr %15, align 4, !tbaa !5
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader, label %.lr.ph, !llvm.loop !13

17:                                               ; preds = %.lr.ph25, %17
  %indvars.iv27 = phi i64 [ 0, %.lr.ph25 ], [ %indvars.iv.next28, %17 ]
  %18 = trunc nuw nsw i64 %indvars.iv27 to i32
  %19 = tail call i32 @i4_uniform_ab(i32 noundef %18, i32 noundef %14, ptr noundef %1)
  %20 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv27
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = sext i32 %19 to i64
  %23 = getelementptr inbounds i32, ptr %5, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  store i32 %24, ptr %20, align 4, !tbaa !5
  store i32 %21, ptr %23, align 4, !tbaa !5
  %indvars.iv.next28 = add nuw nsw i64 %indvars.iv27, 1
  %exitcond31.not = icmp eq i64 %indvars.iv.next28, %wide.trip.count30
  br i1 %exitcond31.not, label %._crit_edge, label %17, !llvm.loop !14

._crit_edge:                                      ; preds = %17, %2, %.preheader
  ret ptr %5
}

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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 allocsize(0) }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}
!14 = distinct !{!14, !10}


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