; LLVM IR from nde-jesu/Doom_Nukem :: libft/srcs/memory (ft_memchr)

; 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 ptr @ft_memchr(ptr noundef %0, i32 noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i64 %2, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %10, ptr %8, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %30, %3
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %18

14:                                               ; preds = %11
  %15 = load i64, ptr %7, align 8, !tbaa !11
  %16 = add i64 %15, -1
  store i64 %16, ptr %7, align 8, !tbaa !11
  %17 = icmp ugt i64 %16, 0
  br label %18

18:                                               ; preds = %14, %11
  %19 = phi i1 [ false, %11 ], [ %17, %14 ]
  br i1 %19, label %20, label %33

20:                                               ; preds = %18
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = load i8, ptr %21, align 1, !tbaa !13
  %23 = zext i8 %22 to i32
  %24 = load i32, ptr %6, align 4, !tbaa !9
  %25 = trunc i32 %24 to i8
  %26 = zext i8 %25 to i32
  %27 = icmp eq i32 %23, %26
  br i1 %27, label %28, label %30

28:                                               ; preds = %20
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %29, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %34

30:                                               ; preds = %20
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i32 1
  store ptr %32, ptr %8, align 8, !tbaa !5
  br label %11, !llvm.loop !14

33:                                               ; preds = %18
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %34

34:                                               ; preds = %33, %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %35 = load ptr, ptr %4, align 8
  ret ptr %35
}

; 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

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 = { 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 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 noundef ptr @ft_memchr(ptr noundef readonly %0, i32 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = trunc i32 %1 to i8
  %5 = add i64 %2, -1
  %.not1019 = icmp eq i64 %5, 0
  br i1 %.not1019, label %.critedge, label %.lr.ph21

.lr.ph21:                                         ; preds = %.lr.ph, %9
  %6 = phi i64 [ %11, %9 ], [ %5, %.lr.ph ]
  %.01220 = phi ptr [ %10, %9 ], [ %0, %.lr.ph ]
  %7 = load i8, ptr %.01220, align 1, !tbaa !5
  %8 = icmp eq i8 %7, %4
  br i1 %8, label %.critedge, label %9

9:                                                ; preds = %.lr.ph21
  %10 = getelementptr inbounds i8, ptr %.01220, i64 1
  %11 = add i64 %6, -1
  %.not10 = icmp eq i64 %11, 0
  br i1 %.not10, label %.critedge, label %.lr.ph21

.critedge:                                        ; preds = %.lr.ph21, %9, %.lr.ph, %3
  %.08 = phi ptr [ null, %3 ], [ null, %.lr.ph ], [ null, %9 ], [ %.01220, %.lr.ph21 ]
  ret ptr %.08
}

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"}


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