; LLVM IR from simon-zerisenay/42_Push_Swap :: libft (ft_strchr)

; 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_strchr(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %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
  store i32 0, ptr %6, align 4, !tbaa !9
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = icmp sge i32 %8, 256
  br i1 %9, label %10, label %13

10:                                               ; preds = %2
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = srem i32 %11, 256
  store i32 %12, ptr %5, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %10, %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = icmp ne ptr %14, null
  br i1 %15, label %17, label %16

16:                                               ; preds = %13
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %58

17:                                               ; preds = %13
  br label %18

18:                                               ; preds = %40, %17
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i8, ptr %19, i64 %21
  %23 = load i8, ptr %22, align 1, !tbaa !11
  %24 = sext i8 %23 to i32
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %26, label %43

26:                                               ; preds = %18
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i8, ptr %27, i64 %29
  %31 = load i8, ptr %30, align 1, !tbaa !11
  %32 = sext i8 %31 to i32
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = icmp eq i32 %32, %33
  br i1 %34, label %35, label %40

35:                                               ; preds = %26
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i8, ptr %36, i64 %38
  store ptr %39, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %58

40:                                               ; preds = %26
  %41 = load i32, ptr %6, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %6, align 4, !tbaa !9
  br label %18, !llvm.loop !12

43:                                               ; preds = %18
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = load i32, ptr %6, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i8, ptr %44, i64 %46
  %48 = load i8, ptr %47, align 1, !tbaa !11
  %49 = sext i8 %48 to i32
  %50 = load i32, ptr %5, align 4, !tbaa !9
  %51 = icmp eq i32 %49, %50
  br i1 %51, label %52, label %57

52:                                               ; preds = %43
  %53 = load ptr, ptr %4, align 8, !tbaa !5
  %54 = load i32, ptr %6, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds i8, ptr %53, i64 %55
  store ptr %56, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %58

57:                                               ; preds = %43
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %58

58:                                               ; preds = %57, %52, %35, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %59 = load ptr, ptr %3, align 8
  ret ptr %59
}

; 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 = !{!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(argmem: read) uwtable
define dso_local ptr @ft_strchr(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 255
  %4 = and i32 %1, 255
  %spec.select = select i1 %3, i32 %4, i32 %1
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %15, label %.preheader

.preheader:                                       ; preds = %2
  %5 = load i8, ptr %0, align 1, !tbaa !5
  %.not2125 = icmp eq i8 %5, 0
  br i1 %.not2125, label %._crit_edge, label %.lr.ph

6:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %7 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %.not21 = icmp eq i8 %8, 0
  br i1 %.not21, label %._crit_edge, label %.lr.ph, !llvm.loop !8

.lr.ph:                                           ; preds = %.preheader, %6
  %indvars.iv = phi i64 [ %indvars.iv.next, %6 ], [ 0, %.preheader ]
  %9 = phi i8 [ %8, %6 ], [ %5, %.preheader ]
  %10 = sext i8 %9 to i32
  %11 = icmp eq i32 %spec.select, %10
  br i1 %11, label %.loopexit, label %6

._crit_edge:                                      ; preds = %6, %.preheader
  %.lcssa24 = phi i64 [ 0, %.preheader ], [ %indvars.iv.next, %6 ]
  %12 = getelementptr inbounds i8, ptr %0, i64 %.lcssa24
  %13 = icmp eq i32 %spec.select, 0
  %. = select i1 %13, ptr %12, ptr null
  br label %15

.loopexit:                                        ; preds = %.lr.ph
  %14 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv
  br label %15

15:                                               ; preds = %.loopexit, %._crit_edge, %2
  %.017 = phi ptr [ null, %2 ], [ %., %._crit_edge ], [ %14, %.loopexit ]
  ret ptr %.017
}

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"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass