; LLVM IR from ramsdell/lineqpp :: lua (lapi)

; 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.lua_State = type { ptr, i8, i8, i8, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i16, i16, i8, i8, i32, i32, ptr, %struct.lua_TValue, %struct.lua_TValue, ptr, ptr, ptr, i64 }
%struct.lua_TValue = type { %union.Value, i32 }
%union.Value = type { ptr }

; 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 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: 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 @lua_xmove(ptr noundef %0, ptr noundef %1, i32 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = icmp eq ptr %11, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  store i32 1, ptr %8, align 4
  br label %54

15:                                               ; preds = %3
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.lua_State, ptr %20, i32 0, i32 4
  %22 = load ptr, ptr %21, align 8, !tbaa !11
  %23 = sext i32 %19 to i64
  %24 = sub i64 0, %23
  %25 = getelementptr inbounds %struct.lua_TValue, ptr %22, i64 %24
  store ptr %25, ptr %21, align 8, !tbaa !11
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %26

26:                                               ; preds = %50, %15
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = icmp slt i32 %27, %28
  br i1 %29, label %30, label %53

30:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.lua_State, ptr %31, i32 0, i32 4
  %33 = load ptr, ptr %32, align 8, !tbaa !11
  %34 = load i32, ptr %7, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds %struct.lua_TValue, ptr %33, i64 %35
  store ptr %36, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.lua_State, ptr %37, i32 0, i32 4
  %39 = load ptr, ptr %38, align 8, !tbaa !11
  %40 = getelementptr inbounds %struct.lua_TValue, ptr %39, i32 1
  store ptr %40, ptr %38, align 8, !tbaa !11
  store ptr %39, ptr %10, align 8, !tbaa !5
  %41 = load ptr, ptr %10, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.lua_TValue, ptr %41, i32 0, i32 0
  %43 = load ptr, ptr %9, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.lua_TValue, ptr %43, i32 0, i32 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %42, ptr align 8 %44, i64 8, i1 false), !tbaa.struct !16
  %45 = load ptr, ptr %9, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.lua_TValue, ptr %45, i32 0, i32 1
  %47 = load i32, ptr %46, align 8, !tbaa !18
  %48 = load ptr, ptr %10, align 8, !tbaa !5
  %49 = getelementptr inbounds %struct.lua_TValue, ptr %48, i32 0, i32 1
  store i32 %47, ptr %49, align 8, !tbaa !18
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %50

50:                                               ; preds = %30
  %51 = load i32, ptr %7, align 4, !tbaa !9
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %7, align 4, !tbaa !9
  br label %26, !llvm.loop !19

53:                                               ; preds = %26
  store i32 0, ptr %8, align 4
  br label %54

54:                                               ; preds = %53, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  %55 = load i32, ptr %8, align 4
  switch i32 %55, label %57 [
    i32 0, label %56
    i32 1, label %56
  ]

56:                                               ; preds = %54, %54
  ret void

57:                                               ; preds = %54
  unreachable
}

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 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 16}
!12 = !{!"lua_State", !6, i64 0, !7, i64 8, !7, i64 9, !7, i64 10, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !10, i64 88, !10, i64 92, !13, i64 96, !13, i64 98, !7, i64 100, !7, i64 101, !10, i64 104, !10, i64 108, !6, i64 112, !14, i64 120, !14, i64 136, !6, i64 152, !6, i64 160, !6, i64 168, !15, i64 176}
!13 = !{!"short", !7, i64 0}
!14 = !{!"lua_TValue", !7, i64 0, !10, i64 8}
!15 = !{!"long", !7, i64 0}
!16 = !{i64 0, i64 8, !17}
!17 = !{!7, !7, i64 0}
!18 = !{!14, !10, i64 8}
!19 = distinct !{!19, !20}
!20 = !{!"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.lua_TValue = type { %union.Value, i32 }
%union.Value = type { ptr }

; Function Attrs: nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @lua_xmove(ptr noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq ptr %0, %1
  br i1 %4, label %.loopexit, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = sext i32 %2 to i64
  %9 = sub nsw i64 0, %8
  %10 = getelementptr inbounds %struct.lua_TValue, ptr %7, i64 %9
  store ptr %10, ptr %6, align 8, !tbaa !5
  %11 = icmp sgt i32 %2, 0
  br i1 %11, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %5
  %12 = getelementptr inbounds i8, ptr %1, i64 16
  %wide.trip.count = zext nneg i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %13 = icmp eq i32 %2, 1
  br i1 %13, label %.loopexit.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %14

14:                                               ; preds = %14, %.lr.ph.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.new ], [ %indvars.iv.next.1, %14 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.1, %14 ]
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.lua_TValue, ptr %15, i64 %indvars.iv
  %17 = load ptr, ptr %12, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i64 16
  store ptr %18, ptr %12, align 8, !tbaa !5
  %19 = load i64, ptr %16, align 8, !tbaa !14
  store i64 %19, ptr %17, align 8, !tbaa !14
  %20 = getelementptr inbounds i8, ptr %16, i64 8
  %21 = load i32, ptr %20, align 8, !tbaa !15
  %22 = getelementptr inbounds i8, ptr %17, i64 8
  store i32 %21, ptr %22, align 8, !tbaa !15
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.lua_TValue, ptr %23, i64 %indvars.iv.next
  %25 = load ptr, ptr %12, align 8, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %25, i64 16
  store ptr %26, ptr %12, align 8, !tbaa !5
  %27 = load i64, ptr %24, align 8, !tbaa !14
  store i64 %27, ptr %25, align 8, !tbaa !14
  %28 = getelementptr inbounds i8, ptr %24, i64 8
  %29 = load i32, ptr %28, align 8, !tbaa !15
  %30 = getelementptr inbounds i8, ptr %25, i64 8
  store i32 %29, ptr %30, align 8, !tbaa !15
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %.loopexit.loopexit.unr-lcssa, label %14, !llvm.loop !16

.loopexit.loopexit.unr-lcssa:                     ; preds = %14, %.lr.ph
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next.1, %14 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.loopexit, label %.loopexit.loopexit.epilog-lcssa

.loopexit.loopexit.epilog-lcssa:                  ; preds = %.loopexit.loopexit.unr-lcssa
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.lua_TValue, ptr %31, i64 %indvars.iv.unr
  %33 = load ptr, ptr %12, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i64 16
  store ptr %34, ptr %12, align 8, !tbaa !5
  %35 = load i64, ptr %32, align 8, !tbaa !14
  store i64 %35, ptr %33, align 8, !tbaa !14
  %36 = getelementptr inbounds i8, ptr %32, i64 8
  %37 = load i32, ptr %36, align 8, !tbaa !15
  %38 = getelementptr inbounds i8, ptr %33, i64 8
  store i32 %37, ptr %38, align 8, !tbaa !15
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit.epilog-lcssa, %.loopexit.loopexit.unr-lcssa, %5, %3
  ret void
}

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" }

!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, !7, i64 16}
!6 = !{!"lua_State", !7, i64 0, !8, i64 8, !8, i64 9, !8, i64 10, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !7, i64 48, !7, i64 56, !7, i64 64, !7, i64 72, !7, i64 80, !10, i64 88, !10, i64 92, !11, i64 96, !11, i64 98, !8, i64 100, !8, i64 101, !10, i64 104, !10, i64 108, !7, i64 112, !12, i64 120, !12, i64 136, !7, i64 152, !7, i64 160, !7, i64 168, !13, i64 176}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"short", !8, i64 0}
!12 = !{!"lua_TValue", !8, i64 0, !10, i64 8}
!13 = !{!"long", !8, i64 0}
!14 = !{!8, !8, i64 0}
!15 = !{!12, !10, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass