; LLVM IR from yettabaa/cub3D :: Mandatory/parsing/get_next_line (get_next_line_utils)

; 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: nounwind uwtable
define dso_local i32 @ftt_strchr(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp ne ptr %6, null
  br i1 %7, label %9, label %8

8:                                                ; preds = %2
  store i32 1, ptr %3, align 4
  br label %27

9:                                                ; preds = %2
  br label %10

10:                                               ; preds = %23, %9
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = load i8, ptr %11, align 1, !tbaa !11
  %13 = icmp ne i8 %12, 0
  br i1 %13, label %14, label %26

14:                                               ; preds = %10
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load i8, ptr %15, align 1, !tbaa !11
  %17 = sext i8 %16 to i32
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = trunc i32 %18 to i8
  %20 = sext i8 %19 to i32
  %21 = icmp eq i32 %17, %20
  br i1 %21, label %22, label %23

22:                                               ; preds = %14
  store i32 0, ptr %3, align 4
  br label %27

23:                                               ; preds = %14
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %24, i32 1
  store ptr %25, ptr %4, align 8, !tbaa !5
  br label %10, !llvm.loop !12

26:                                               ; preds = %10
  store i32 1, ptr %3, align 4
  br label %27

27:                                               ; preds = %26, %22, %8
  %28 = load i32, ptr %3, align 4
  ret i32 %28
}

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 = !{!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 norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @ftt_strchr(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %3 = load i8, ptr %0, align 1, !tbaa !5
  %.not89 = icmp eq i8 %3, 0
  br i1 %.not89, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %sext = shl i32 %1, 24
  %4 = ashr exact i32 %sext, 24
  br label %8

5:                                                ; preds = %8
  %6 = getelementptr inbounds i8, ptr %.0510, i64 1
  %7 = load i8, ptr %6, align 1, !tbaa !5
  %.not8 = icmp eq i8 %7, 0
  br i1 %.not8, label %.loopexit, label %8, !llvm.loop !8

8:                                                ; preds = %.lr.ph, %5
  %9 = phi i8 [ %3, %.lr.ph ], [ %7, %5 ]
  %.0510 = phi ptr [ %0, %.lr.ph ], [ %6, %5 ]
  %10 = sext i8 %9 to i32
  %11 = icmp eq i32 %4, %10
  br i1 %11, label %.loopexit, label %5

.loopexit:                                        ; preds = %8, %5, %.preheader, %2
  %.0 = phi i32 [ 1, %2 ], [ 1, %.preheader ], [ 0, %8 ], [ 1, %5 ]
  ret i32 %.0
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, 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, !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,GlobalOptPass,IPSCCPPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass