; LLVM IR from libtcod/libtcod :: src/libtcod (lex_c)

; 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
declare dso_local i32 @TCOD_lex_parse(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @TCOD_lex_parse_until_token_type(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call i32 @TCOD_lex_parse(ptr noundef %8)
  store i32 %9, ptr %6, align 4, !tbaa !9
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = icmp eq i32 %10, -1
  br i1 %11, label %12, label %14

12:                                               ; preds = %2
  %13 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %13, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %34

14:                                               ; preds = %2
  br label %15

15:                                               ; preds = %31, %14
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = icmp ne i32 %16, 8
  br i1 %17, label %18, label %32

18:                                               ; preds = %15
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = icmp eq i32 %19, %20
  br i1 %21, label %22, label %24

22:                                               ; preds = %18
  %23 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %23, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %34

24:                                               ; preds = %18
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = call i32 @TCOD_lex_parse(ptr noundef %25)
  store i32 %26, ptr %6, align 4, !tbaa !9
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = icmp eq i32 %27, -1
  br i1 %28, label %29, label %31

29:                                               ; preds = %24
  %30 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %30, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %34

31:                                               ; preds = %24
  br label %15, !llvm.loop !11

32:                                               ; preds = %15
  %33 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %33, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %34

34:                                               ; preds = %32, %29, %22, %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %35 = load i32, ptr %3, align 4
  ret i32 %35
}

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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: nounwind uwtable
declare dso_local i32 @TCOD_lex_parse(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @TCOD_lex_parse_until_token_type(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @TCOD_lex_parse(ptr noundef %0)
  %4 = icmp eq i32 %3, -1
  br i1 %4, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2, %7
  %.0 = phi i32 [ %8, %7 ], [ %3, %2 ]
  %.not = icmp eq i32 %.0, 8
  br i1 %.not, label %.loopexit, label %5

5:                                                ; preds = %.preheader
  %6 = icmp eq i32 %.0, %1
  br i1 %6, label %.loopexit, label %7

7:                                                ; preds = %5
  %8 = tail call i32 @TCOD_lex_parse(ptr noundef %0)
  %9 = icmp eq i32 %8, -1
  br i1 %9, label %.loopexit, label %.preheader, !llvm.loop !5

.loopexit:                                        ; preds = %.preheader, %7, %5, %2
  %.011 = phi i32 [ -1, %2 ], [ 8, %.preheader ], [ -1, %7 ], [ %1, %5 ]
  ret i32 %.011
}

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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass