; LLVM IR from lionsoul2014/friso :: src (friso_lexicon)

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

8:                                                ; preds = %16, %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call i32 @fgetc(ptr noundef %9)
  store i32 %10, ptr %5, align 4, !tbaa !9
  %11 = icmp ne i32 %10, -1
  br i1 %11, label %12, label %21

12:                                               ; preds = %8
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = icmp eq i32 %13, 10
  br i1 %14, label %15, label %16

15:                                               ; preds = %12
  br label %21

16:                                               ; preds = %12
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = trunc i32 %17 to i8
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %19, i32 1
  store ptr %20, ptr %6, align 8, !tbaa !5
  store i8 %18, ptr %19, align 1, !tbaa !11
  br label %8, !llvm.loop !12

21:                                               ; preds = %15, %8
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  store i8 0, ptr %22, align 1, !tbaa !11
  %23 = load i32, ptr %5, align 4, !tbaa !9
  %24 = icmp eq i32 %23, -1
  br i1 %24, label %25, label %30

25:                                               ; preds = %21
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = icmp eq ptr %26, %27
  br i1 %28, label %29, label %30

29:                                               ; preds = %25
  br label %32

30:                                               ; preds = %25, %21
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %30, %29
  %33 = phi ptr [ null, %29 ], [ %31, %30 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret ptr %33
}

declare i32 @fgetc(ptr noundef) #2

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 = { "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 = !{!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 nounwind uwtable
define dso_local ptr @file_get_line(ptr noundef writeonly %0, ptr nocapture noundef %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %5, %2
  %.0 = phi ptr [ %0, %2 ], [ %7, %5 ]
  %4 = tail call i32 @fgetc(ptr noundef %1)
  switch i32 %4, label %5 [
    i32 -1, label %8
    i32 10, label %8
  ]

5:                                                ; preds = %3
  %6 = trunc i32 %4 to i8
  %7 = getelementptr inbounds i8, ptr %.0, i64 1
  store i8 %6, ptr %.0, align 1, !tbaa !5
  br label %3, !llvm.loop !8

8:                                                ; preds = %3, %3
  %9 = icmp eq i32 %4, -1
  store i8 0, ptr %.0, align 1, !tbaa !5
  %10 = icmp eq ptr %.0, %0
  %or.cond = select i1 %9, i1 %10, i1 false
  %11 = select i1 %or.cond, ptr null, ptr %0
  ret ptr %11
}

; Function Attrs: nofree nounwind
declare noundef i32 @fgetc(ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { nofree 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 = { nofree nounwind "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, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass