; LLVM IR from AdrianWR/push_swap :: libft/src (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
  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
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = icmp ne i64 %8, 0
  br i1 %9, label %11, label %10

10:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  br label %29

11:                                               ; preds = %3
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load i8, ptr %12, align 1, !tbaa !13
  %14 = zext i8 %13 to i32
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = trunc i32 %15 to i8
  %17 = zext i8 %16 to i32
  %18 = icmp eq i32 %14, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %11
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %20, ptr %4, align 8
  br label %29

21:                                               ; preds = %11
  br label %22

22:                                               ; preds = %21
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %23, i32 1
  store ptr %24, ptr %5, align 8, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = load i64, ptr %7, align 8, !tbaa !11
  %27 = add i64 %26, -1
  store i64 %27, ptr %7, align 8, !tbaa !11
  %28 = call ptr @ft_memchr(ptr noundef %24, i32 noundef %25, i64 noundef %27)
  store ptr %28, ptr %4, align 8
  br label %29

29:                                               ; preds = %22, %19, %10
  %30 = load ptr, ptr %4, align 8
  ret ptr %30
}

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 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!7, !7, i64 0}


; 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(argmem: read) uwtable
define dso_local noundef ptr @ft_memchr(ptr noundef readonly %0, i32 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not10 = icmp eq i64 %2, 0
  br i1 %.not10, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = trunc i32 %1 to i8
  br label %5

5:                                                ; preds = %.lr.ph, %tailrecurse
  %.tr912 = phi i64 [ %2, %.lr.ph ], [ %9, %tailrecurse ]
  %.tr11 = phi ptr [ %0, %.lr.ph ], [ %8, %tailrecurse ]
  %6 = load i8, ptr %.tr11, align 1, !tbaa !5
  %7 = icmp eq i8 %6, %4
  br i1 %7, label %._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %5
  %8 = getelementptr inbounds i8, ptr %.tr11, i64 1
  %9 = add i64 %.tr912, -1
  %.not = icmp eq i64 %9, 0
  br i1 %.not, label %._crit_edge, label %5

._crit_edge:                                      ; preds = %tailrecurse, %5, %3
  %.0 = phi ptr [ null, %3 ], [ %.tr11, %5 ], [ null, %tailrecurse ]
  ret ptr %.0
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass