; LLVM IR from masyagin1998/GCI :: src/lexer (token)

; 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.POS = type { ptr, i64, i64, i64, i64 }
%struct.TOKEN = type { i32, i32, %struct.FRAG, %union.anon }
%struct.FRAG = type { %struct.POS, %struct.POS }
%union.anon = type { i64, [24 x i8] }

; Function Attrs: nounwind uwtable
declare dso_local ptr @create_token() #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @token_read_keyword(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3, i64 noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca %struct.POS, align 8
  %13 = alloca i64, align 8
  %14 = alloca %struct.POS, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  store i64 %4, ptr %10, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.start.p0(i64 40, ptr %12) #4
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %12, ptr align 8 %15, i64 40, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  %16 = load ptr, ptr %9, align 8, !tbaa !5
  %17 = call ptr @create_token()
  store ptr %17, ptr %11, align 8, !tbaa !5
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = load ptr, ptr %11, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.TOKEN, ptr %19, i32 0, i32 0
  store i32 %18, ptr %20, align 8, !tbaa !14
  %21 = load ptr, ptr %11, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.TOKEN, ptr %21, i32 0, i32 1
  store i32 0, ptr %22, align 4, !tbaa !18
  store i64 0, ptr %13, align 8, !tbaa !11
  br label %23

23:                                               ; preds = %27, %5
  %24 = load i64, ptr %13, align 8, !tbaa !11
  %25 = load i64, ptr %10, align 8, !tbaa !11
  %26 = icmp ne i64 %24, %25
  br i1 %26, label %27, label %30

27:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 40, ptr %14) #4
  call void @pos_next(ptr dead_on_unwind writable sret(%struct.POS) align 8 %14, ptr noundef %12)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %12, ptr align 8 %14, i64 40, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.end.p0(i64 40, ptr %14) #4
  %28 = load i64, ptr %13, align 8, !tbaa !11
  %29 = add i64 %28, 1
  store i64 %29, ptr %13, align 8, !tbaa !11
  br label %23, !llvm.loop !19

30:                                               ; preds = %23
  %31 = load ptr, ptr %11, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.TOKEN, ptr %31, i32 0, i32 2
  %33 = getelementptr inbounds %struct.FRAG, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %33, ptr align 8 %34, i64 40, i1 false), !tbaa.struct !13
  %35 = load ptr, ptr %11, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.TOKEN, ptr %35, i32 0, i32 2
  %37 = getelementptr inbounds %struct.FRAG, ptr %36, i32 0, i32 1
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %37, ptr align 8 %12, i64 40, i1 false), !tbaa.struct !13
  %38 = load ptr, ptr %11, align 8, !tbaa !5
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %38, ptr %39, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 40, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  ret void
}

; 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) #2

declare void @pos_next(ptr dead_on_unwind writable sret(%struct.POS) align 8, ptr noundef) #3

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 }

!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, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{i64 0, i64 8, !5, i64 8, i64 8, !11, i64 16, i64 8, !11, i64 24, i64 8, !11, i64 32, i64 8, !11}
!14 = !{!15, !10, i64 0}
!15 = !{!"TOKEN", !10, i64 0, !10, i64 4, !16, i64 8, !7, i64 88}
!16 = !{!"FRAG", !17, i64 0, !17, i64 40}
!17 = !{!"POS", !6, i64 0, !12, i64 8, !12, i64 16, !12, i64 24, !12, i64 32}
!18 = !{!15, !10, i64 4}
!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.POS = type { ptr, i64, i64, i64, i64 }

; Function Attrs: nounwind uwtable
declare dso_local ptr @create_token() local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @token_read_keyword(ptr nocapture noundef writeonly %0, ptr nocapture noundef readonly %1, i32 noundef %2, ptr nocapture noundef readnone %3, i64 noundef %4) local_unnamed_addr #0 {
  %6 = alloca %struct.POS, align 8
  %7 = alloca %struct.POS, align 8
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %6) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %6, ptr noundef nonnull align 8 dereferenceable(40) %1, i64 40, i1 false), !tbaa.struct !5
  %8 = tail call ptr @create_token()
  store i32 %2, ptr %8, align 8, !tbaa !12
  %9 = getelementptr inbounds i8, ptr %8, i64 4
  store i32 0, ptr %9, align 4, !tbaa !17
  %.not12 = icmp eq i64 %4, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5, %.lr.ph
  %.013 = phi i64 [ %10, %.lr.ph ], [ 0, %5 ]
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %7) #4
  call void @pos_next(ptr dead_on_unwind nonnull writable sret(%struct.POS) align 8 %7, ptr noundef nonnull %6) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %6, ptr noundef nonnull align 8 dereferenceable(40) %7, i64 40, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %7) #4
  %10 = add nuw i64 %.013, 1
  %.not = icmp eq i64 %10, %4
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !18

._crit_edge:                                      ; preds = %.lr.ph, %5
  %11 = getelementptr inbounds i8, ptr %8, i64 8
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %11, ptr noundef nonnull align 8 dereferenceable(40) %1, i64 40, i1 false), !tbaa.struct !5
  %12 = getelementptr inbounds i8, ptr %8, i64 48
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %12, ptr noundef nonnull align 8 dereferenceable(40) %6, i64 40, i1 false), !tbaa.struct !5
  store ptr %8, ptr %0, align 8, !tbaa !6
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %6) #4
  ret void
}

; Function Attrs: mustprogress 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) #2

declare void @pos_next(ptr dead_on_unwind writable sret(%struct.POS) align 8, ptr noundef) local_unnamed_addr #3

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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 }

!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 = !{i64 0, i64 8, !6, i64 8, i64 8, !10, i64 16, i64 8, !10, i64 24, i64 8, !10, i64 32, i64 8, !10}
!6 = !{!7, !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!13, !14, i64 0}
!13 = !{!"TOKEN", !14, i64 0, !14, i64 4, !15, i64 8, !8, i64 88}
!14 = !{!"int", !8, i64 0}
!15 = !{!"FRAG", !16, i64 0, !16, i64 40}
!16 = !{!"POS", !7, i64 0, !11, i64 8, !11, i64 16, !11, i64 24, !11, i64 32}
!17 = !{!13, !14, i64 4}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}


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