; LLVM IR from CactiLab/Sherloc-Cortex-M-CFVD :: Sherloc_runtime/evaluation/src/wikisort (libwikisort)

; 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"

%struct.Test = type { i32, i32 }

; 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local void @BlockSwap(ptr noundef %0, i64 noundef %1, i64 noundef %2, i64 noundef %3) #2 {
  %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
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca %struct.Test, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store i64 %2, ptr %7, align 8, !tbaa !9
  store i64 %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  store i64 0, ptr %9, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %32, %4
  %14 = load i64, ptr %9, align 8, !tbaa !9
  %15 = load i64, ptr %8, align 8, !tbaa !9
  %16 = icmp slt i64 %14, %15
  br i1 %16, label %17, label %35

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load i64, ptr %6, align 8, !tbaa !9
  %20 = load i64, ptr %9, align 8, !tbaa !9
  %21 = add nsw i64 %19, %20
  %22 = getelementptr inbounds %struct.Test, ptr %18, i64 %21
  store ptr %22, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load i64, ptr %7, align 8, !tbaa !9
  %25 = load i64, ptr %9, align 8, !tbaa !9
  %26 = add nsw i64 %24, %25
  %27 = getelementptr inbounds %struct.Test, ptr %23, i64 %26
  store ptr %27, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %28 = load ptr, ptr %10, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %12, ptr align 4 %28, i64 8, i1 false), !tbaa.struct !11
  %29 = load ptr, ptr %10, align 8, !tbaa !5
  %30 = load ptr, ptr %11, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %29, ptr align 4 %30, i64 8, i1 false), !tbaa.struct !11
  %31 = load ptr, ptr %11, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %31, ptr align 4 %12, i64 8, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %32

32:                                               ; preds = %17
  %33 = load i64, ptr %9, align 8, !tbaa !9
  %34 = add nsw i64 %33, 1
  store i64 %34, ptr %9, align 8, !tbaa !9
  br label %13, !llvm.loop !14

35:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 }

!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 = !{i64 0, i64 4, !12, i64 4, i64 4, !12}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !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"

%struct.Test = type { i32, i32 }

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @BlockSwap(ptr nocapture noundef %0, i64 noundef %1, i64 noundef %2, i64 noundef %3) local_unnamed_addr #0 {
  %5 = icmp sgt i64 %3, 0
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %min.iters.check = icmp ult i64 %3, 14
  br i1 %min.iters.check, label %.lr.ph.preheader19, label %vector.memcheck

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %6 = shl i64 %1, 3
  %scevgep = getelementptr i8, ptr %0, i64 %6
  %7 = shl i64 %3, 3
  %8 = getelementptr i8, ptr %0, i64 %7
  %scevgep13 = getelementptr i8, ptr %8, i64 %6
  %9 = shl i64 %2, 3
  %scevgep14 = getelementptr i8, ptr %0, i64 %9
  %10 = getelementptr i8, ptr %0, i64 %7
  %scevgep15 = getelementptr i8, ptr %10, i64 %9
  %bound0 = icmp ult ptr %scevgep, %scevgep15
  %bound1 = icmp ult ptr %scevgep14, %scevgep13
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %.lr.ph.preheader19, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %3, 9223372036854775804
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %11 = getelementptr %struct.Test, ptr %0, i64 %index
  %12 = getelementptr %struct.Test, ptr %11, i64 %1
  %13 = getelementptr %struct.Test, ptr %11, i64 %2
  %14 = getelementptr i8, ptr %12, i64 16
  %wide.load = load <2 x i64>, ptr %12, align 4, !alias.scope !5, !noalias !8
  %wide.load16 = load <2 x i64>, ptr %14, align 4, !alias.scope !5, !noalias !8
  %15 = getelementptr i8, ptr %13, i64 16
  %wide.load17 = load <2 x i64>, ptr %13, align 4, !alias.scope !8
  %wide.load18 = load <2 x i64>, ptr %15, align 4, !alias.scope !8
  store <2 x i64> %wide.load17, ptr %12, align 4, !alias.scope !5, !noalias !8
  store <2 x i64> %wide.load18, ptr %14, align 4, !alias.scope !5, !noalias !8
  store <2 x i64> %wide.load, ptr %13, align 4, !alias.scope !8
  store <2 x i64> %wide.load16, ptr %15, align 4, !alias.scope !8
  %index.next = add nuw i64 %index, 4
  %16 = icmp eq i64 %index.next, %n.vec
  br i1 %16, label %middle.block, label %vector.body, !llvm.loop !10

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %3
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader19

.lr.ph.preheader19:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.012.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %3, 1
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader19
  %17 = getelementptr %struct.Test, ptr %0, i64 %.012.ph
  %18 = getelementptr %struct.Test, ptr %17, i64 %1
  %19 = getelementptr %struct.Test, ptr %17, i64 %2
  %20 = load i64, ptr %18, align 4
  %21 = load i64, ptr %19, align 4
  store i64 %21, ptr %18, align 4
  store i64 %20, ptr %19, align 4
  %22 = or disjoint i64 %.012.ph, 1
  br label %.lr.ph.prol.loopexit

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader19
  %.012.unr = phi i64 [ %.012.ph, %.lr.ph.preheader19 ], [ %22, %.lr.ph.prol ]
  %23 = add nsw i64 %3, -1
  %24 = icmp eq i64 %.012.ph, %23
  br i1 %24, label %._crit_edge, label %.lr.ph.preheader19.new

.lr.ph.preheader19.new:                           ; preds = %.lr.ph.prol.loopexit
  %invariant.gep = getelementptr i8, ptr %0, i64 8
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader19.new
  %.012 = phi i64 [ %.012.unr, %.lr.ph.preheader19.new ], [ %34, %.lr.ph ]
  %25 = getelementptr %struct.Test, ptr %0, i64 %.012
  %26 = getelementptr %struct.Test, ptr %25, i64 %1
  %27 = getelementptr %struct.Test, ptr %25, i64 %2
  %28 = load i64, ptr %26, align 4
  %29 = load i64, ptr %27, align 4
  store i64 %29, ptr %26, align 4
  store i64 %28, ptr %27, align 4
  %gep = getelementptr %struct.Test, ptr %invariant.gep, i64 %.012
  %30 = getelementptr %struct.Test, ptr %gep, i64 %1
  %31 = getelementptr %struct.Test, ptr %gep, i64 %2
  %32 = load i64, ptr %30, align 4
  %33 = load i64, ptr %31, align 4
  store i64 %33, ptr %30, align 4
  store i64 %32, ptr %31, align 4
  %34 = add nuw nsw i64 %.012, 2
  %exitcond.not.1 = icmp eq i64 %34, %3
  br i1 %exitcond.not.1, label %._crit_edge, label %.lr.ph, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %4
  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 = distinct !{!6, !7}
!7 = distinct !{!7, !"LVerDomain"}
!8 = !{!9}
!9 = distinct !{!9, !7}
!10 = distinct !{!10, !11, !12, !13}
!11 = !{!"llvm.loop.mustprogress"}
!12 = !{!"llvm.loop.isvectorized", i32 1}
!13 = !{!"llvm.loop.unroll.runtime.disable"}
!14 = distinct !{!14, !11, !12}


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