; LLVM IR from specinfo-ua/UAPKI :: library/uapkic/src (byte-utils-internal)

; 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"

@.str = external hidden unnamed_addr constant [29 x i8], align 1

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

declare void @stacktrace_create(ptr noundef, i64 noundef, i32 noundef, ptr noundef) #1

; 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 ptr @uint8_swap_with_alloc(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  store ptr null, ptr %7, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %2
  %9 = load i64, ptr %4, align 8, !tbaa !9
  %10 = call noalias ptr @malloc(i64 noundef %9) #5
  store ptr %10, ptr %7, align 8, !tbaa !5
  %11 = icmp eq ptr null, %10
  br i1 %11, label %12, label %14

12:                                               ; preds = %8
  store i32 1, ptr %6, align 4, !tbaa !11
  %13 = load i32, ptr %6, align 4, !tbaa !11
  call void @stacktrace_create(ptr noundef @.str, i64 noundef 233, i32 noundef %13, ptr noundef null)
  br label %36

14:                                               ; preds = %8
  br label %15

15:                                               ; preds = %14
  br label %16

16:                                               ; preds = %15
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %32, %16
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = load i64, ptr %4, align 8, !tbaa !9
  %20 = icmp ult i64 %18, %19
  br i1 %20, label %21, label %35

21:                                               ; preds = %17
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = load i64, ptr %5, align 8, !tbaa !9
  %24 = getelementptr inbounds i8, ptr %22, i64 %23
  %25 = load i8, ptr %24, align 1, !tbaa !13
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = load i64, ptr %4, align 8, !tbaa !9
  %28 = sub i64 %27, 1
  %29 = load i64, ptr %5, align 8, !tbaa !9
  %30 = sub i64 %28, %29
  %31 = getelementptr inbounds i8, ptr %26, i64 %30
  store i8 %25, ptr %31, align 1, !tbaa !13
  br label %32

32:                                               ; preds = %21
  %33 = load i64, ptr %5, align 8, !tbaa !9
  %34 = add i64 %33, 1
  store i64 %34, ptr %5, align 8, !tbaa !9
  br label %17, !llvm.loop !14

35:                                               ; preds = %17
  br label %36

36:                                               ; preds = %35, %12
  %37 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret ptr %37
}

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 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 #4 = { nounwind }
attributes #5 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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"

@.str = external hidden unnamed_addr constant [29 x i8], align 1

declare void @stacktrace_create(ptr noundef, i64 noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @uint8_swap_with_alloc(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = tail call noalias ptr @malloc(i64 noundef %1) #3
  %4 = icmp eq ptr %3, null
  br i1 %4, label %15, label %.preheader

.preheader:                                       ; preds = %2
  %invariant.gep = getelementptr i8, ptr %3, i64 %1
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %.loopexit, label %iter.check

iter.check:                                       ; preds = %.preheader
  %min.iters.check = icmp ult i64 %1, 8
  br i1 %min.iters.check, label %.lr.ph.preheader, label %vector.main.loop.iter.check

vector.main.loop.iter.check:                      ; preds = %iter.check
  %min.iters.check13 = icmp ult i64 %1, 32
  br i1 %min.iters.check13, label %vec.epilog.ph, label %vector.ph

vector.ph:                                        ; preds = %vector.main.loop.iter.check
  %n.vec = and i64 %1, -32
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %5 = getelementptr inbounds i8, ptr %0, i64 %index
  %6 = getelementptr inbounds i8, ptr %5, i64 16
  %wide.load = load <16 x i8>, ptr %5, align 1, !tbaa !5
  %wide.load14 = load <16 x i8>, ptr %6, align 1, !tbaa !5
  %7 = xor i64 %index, -1
  %8 = getelementptr i8, ptr %invariant.gep, i64 %7
  %9 = getelementptr i8, ptr %8, i64 -15
  %10 = getelementptr i8, ptr %8, i64 -31
  %reverse = shufflevector <16 x i8> %wide.load, <16 x i8> poison, <16 x i32> <i32 15, i32 14, i32 13, i32 12, i32 11, i32 10, i32 9, i32 8, i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
  store <16 x i8> %reverse, ptr %9, align 1, !tbaa !5
  %reverse15 = shufflevector <16 x i8> %wide.load14, <16 x i8> poison, <16 x i32> <i32 15, i32 14, i32 13, i32 12, i32 11, i32 10, i32 9, i32 8, i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
  store <16 x i8> %reverse15, ptr %10, align 1, !tbaa !5
  %index.next = add nuw i64 %index, 32
  %11 = icmp eq i64 %index.next, %n.vec
  br i1 %11, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %1
  br i1 %cmp.n, label %.loopexit, label %vec.epilog.iter.check

vec.epilog.iter.check:                            ; preds = %middle.block
  %n.vec.remaining = and i64 %1, 24
  %min.epilog.iters.check = icmp eq i64 %n.vec.remaining, 0
  br i1 %min.epilog.iters.check, label %.lr.ph.preheader, label %vec.epilog.ph

.lr.ph.preheader:                                 ; preds = %vec.epilog.middle.block, %iter.check, %vec.epilog.iter.check
  %.012.ph = phi i64 [ 0, %iter.check ], [ %n.vec, %vec.epilog.iter.check ], [ %n.vec17, %vec.epilog.middle.block ]
  br label %.lr.ph

vec.epilog.ph:                                    ; preds = %vector.main.loop.iter.check, %vec.epilog.iter.check
  %vec.epilog.resume.val = phi i64 [ %n.vec, %vec.epilog.iter.check ], [ 0, %vector.main.loop.iter.check ]
  %n.vec17 = and i64 %1, -8
  %invariant.gep23 = getelementptr i8, ptr %invariant.gep, i64 -7
  br label %vec.epilog.vector.body

vec.epilog.vector.body:                           ; preds = %vec.epilog.vector.body, %vec.epilog.ph
  %index18 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next21, %vec.epilog.vector.body ]
  %12 = getelementptr inbounds i8, ptr %0, i64 %index18
  %wide.load19 = load <8 x i8>, ptr %12, align 1, !tbaa !5
  %13 = xor i64 %index18, -1
  %gep24 = getelementptr i8, ptr %invariant.gep23, i64 %13
  %reverse20 = shufflevector <8 x i8> %wide.load19, <8 x i8> poison, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
  store <8 x i8> %reverse20, ptr %gep24, align 1, !tbaa !5
  %index.next21 = add nuw i64 %index18, 8
  %14 = icmp eq i64 %index.next21, %n.vec17
  br i1 %14, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !12

vec.epilog.middle.block:                          ; preds = %vec.epilog.vector.body
  %cmp.n22 = icmp eq i64 %n.vec17, %1
  br i1 %cmp.n22, label %.loopexit, label %.lr.ph.preheader

15:                                               ; preds = %2
  tail call void @stacktrace_create(ptr noundef nonnull @.str, i64 noundef 233, i32 noundef 1, ptr noundef null) #4
  br label %.loopexit

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.012 = phi i64 [ %19, %.lr.ph ], [ %.012.ph, %.lr.ph.preheader ]
  %16 = getelementptr inbounds i8, ptr %0, i64 %.012
  %17 = load i8, ptr %16, align 1, !tbaa !5
  %18 = xor i64 %.012, -1
  %gep = getelementptr i8, ptr %invariant.gep, i64 %18
  store i8 %17, ptr %gep, align 1, !tbaa !5
  %19 = add nuw i64 %.012, 1
  %exitcond.not = icmp eq i64 %19, %1
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !13

.loopexit:                                        ; preds = %.lr.ph, %middle.block, %vec.epilog.middle.block, %.preheader, %15
  ret ptr %3
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #2

attributes #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 = { 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 = { 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 #3 = { nounwind allocsize(0) }
attributes #4 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9, !10, !11}
!9 = !{!"llvm.loop.mustprogress"}
!10 = !{!"llvm.loop.isvectorized", i32 1}
!11 = !{!"llvm.loop.unroll.runtime.disable"}
!12 = distinct !{!12, !9, !10, !11}
!13 = distinct !{!13, !9, !11, !10}


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