; LLVM IR from bnidia/push_swap :: libraries/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 i8, align 1
  %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 1, ptr %6) #2
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = trunc i32 %8 to i8
  store i8 %9, ptr %6, align 1, !tbaa !11
  br label %10

10:                                               ; preds = %25, %2
  %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 = getelementptr inbounds i8, ptr %15, i32 1
  store ptr %16, ptr %4, align 8, !tbaa !5
  %17 = load i8, ptr %15, align 1, !tbaa !11
  %18 = sext i8 %17 to i32
  %19 = load i8, ptr %6, align 1, !tbaa !11
  %20 = sext i8 %19 to i32
  %21 = icmp eq i32 %18, %20
  br i1 %21, label %22, label %25

22:                                               ; preds = %14
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %23, i64 -1
  store ptr %24, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %32

25:                                               ; preds = %14
  br label %10, !llvm.loop !12

26:                                               ; preds = %10
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %29, label %31

29:                                               ; preds = %26
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %30, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %32

31:                                               ; preds = %26
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %32

32:                                               ; preds = %31, %29, %22
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  %33 = load ptr, ptr %3, align 8
  ret ptr %33
}

; 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(read, inaccessiblemem: none) uwtable
define dso_local noundef ptr @ft_strchr(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %sext = shl i32 %1, 24
  %3 = ashr exact i32 %sext, 24
  br label %4

4:                                                ; preds = %6, %2
  %.07 = phi ptr [ %0, %2 ], [ %7, %6 ]
  %5 = load i8, ptr %.07, align 1, !tbaa !5
  %.not = icmp eq i8 %5, 0
  br i1 %.not, label %10, label %6

6:                                                ; preds = %4
  %7 = getelementptr inbounds i8, ptr %.07, i64 1
  %8 = sext i8 %5 to i32
  %9 = icmp eq i32 %3, %8
  br i1 %9, label %.loopexit, label %4, !llvm.loop !8

10:                                               ; preds = %4
  %11 = icmp eq i32 %1, 0
  %.07. = select i1 %11, ptr %.07, ptr null
  br label %.loopexit

.loopexit:                                        ; preds = %6, %10
  %.0 = phi ptr [ %.07., %10 ], [ %.07, %6 ]
  ret ptr %.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,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass