; LLVM IR from square/subzero :: core/external-crypto/aes (aesaux)

; 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 @block_copy(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 ptr, align 8
  %8 = alloca ptr, 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) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %9, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %10, ptr %8, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %17, %3
  %12 = load ptr, ptr %7, align 8, !tbaa !5
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = getelementptr inbounds i8, ptr %13, i64 %14
  %16 = icmp ult ptr %12, %15
  br i1 %16, label %17, label %23

17:                                               ; preds = %11
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %18, i32 1
  store ptr %19, ptr %8, align 8, !tbaa !5
  %20 = load i8, ptr %18, align 1, !tbaa !11
  %21 = load ptr, ptr %7, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %21, i32 1
  store ptr %22, ptr %7, align 8, !tbaa !5
  store i8 %20, ptr %21, align 1, !tbaa !11
  br label %11, !llvm.loop !12

23:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret void
}

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 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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(readwrite, inaccessiblemem: none) uwtable
define dso_local void @block_copy(ptr noundef writeonly %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 %2
  %5 = icmp sgt i64 %2, 0
  br i1 %5, label %iter.check, label %._crit_edge

iter.check:                                       ; preds = %3
  %6 = ptrtoint ptr %0 to i64
  %7 = ptrtoint ptr %1 to i64
  %8 = ptrtoint ptr %0 to i64
  %9 = add i64 %8, %2
  %10 = add i64 %8, 1
  %umax = tail call i64 @llvm.umax.i64(i64 %9, i64 %10)
  %11 = sub i64 %umax, %8
  %min.iters.check = icmp ult i64 %11, 8
  %12 = sub i64 %6, %7
  %diff.check = icmp ult i64 %12, 32
  %or.cond = or i1 %min.iters.check, %diff.check
  br i1 %or.cond, label %.lr.ph.preheader, label %vector.main.loop.iter.check

vector.main.loop.iter.check:                      ; preds = %iter.check
  %min.iters.check9 = icmp ult i64 %11, 32
  br i1 %min.iters.check9, label %vec.epilog.ph, label %vector.ph

vector.ph:                                        ; preds = %vector.main.loop.iter.check
  %n.vec = and i64 %11, -32
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %next.gep = getelementptr i8, ptr %1, i64 %index
  %next.gep11 = getelementptr i8, ptr %0, i64 %index
  %13 = getelementptr i8, ptr %next.gep, i64 16
  %wide.load = load <16 x i8>, ptr %next.gep, align 1, !tbaa !5
  %wide.load13 = load <16 x i8>, ptr %13, align 1, !tbaa !5
  %14 = getelementptr i8, ptr %next.gep11, i64 16
  store <16 x i8> %wide.load, ptr %next.gep11, align 1, !tbaa !5
  store <16 x i8> %wide.load13, ptr %14, align 1, !tbaa !5
  %index.next = add nuw i64 %index, 32
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %11, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %vec.epilog.iter.check

vec.epilog.iter.check:                            ; preds = %middle.block
  %ind.end18 = getelementptr i8, ptr %0, i64 %n.vec
  %ind.end16 = getelementptr i8, ptr %1, i64 %n.vec
  %n.vec.remaining = and i64 %11, 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

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.vec15 = and i64 %11, -8
  %ind.end = getelementptr i8, ptr %1, i64 %n.vec15
  %ind.end17 = getelementptr i8, ptr %0, i64 %n.vec15
  br label %vec.epilog.vector.body

vec.epilog.vector.body:                           ; preds = %vec.epilog.vector.body, %vec.epilog.ph
  %index20 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next24, %vec.epilog.vector.body ]
  %next.gep21 = getelementptr i8, ptr %1, i64 %index20
  %next.gep22 = getelementptr i8, ptr %0, i64 %index20
  %wide.load23 = load <8 x i8>, ptr %next.gep21, align 1, !tbaa !5
  store <8 x i8> %wide.load23, ptr %next.gep22, align 1, !tbaa !5
  %index.next24 = add nuw i64 %index20, 8
  %16 = icmp eq i64 %index.next24, %n.vec15
  br i1 %16, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !12

vec.epilog.middle.block:                          ; preds = %vec.epilog.vector.body
  %cmp.n25 = icmp eq i64 %11, %n.vec15
  br i1 %cmp.n25, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %vec.epilog.middle.block, %iter.check, %vec.epilog.iter.check
  %.08.ph = phi ptr [ %1, %iter.check ], [ %ind.end16, %vec.epilog.iter.check ], [ %ind.end, %vec.epilog.middle.block ]
  %.067.ph = phi ptr [ %0, %iter.check ], [ %ind.end18, %vec.epilog.iter.check ], [ %ind.end17, %vec.epilog.middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.08 = phi ptr [ %17, %.lr.ph ], [ %.08.ph, %.lr.ph.preheader ]
  %.067 = phi ptr [ %19, %.lr.ph ], [ %.067.ph, %.lr.ph.preheader ]
  %17 = getelementptr inbounds i8, ptr %.08, i64 1
  %18 = load i8, ptr %.08, align 1, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %.067, i64 1
  store i8 %18, ptr %.067, align 1, !tbaa !5
  %20 = icmp ult ptr %19, %4
  br i1 %20, label %.lr.ph, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %vec.epilog.middle.block, %3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #1

attributes #0 = { nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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, !10}


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