; LLVM IR from AdrianWR/push_swap :: libft/src (ft_strrchr)

; 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_strrchr(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %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 8, ptr %6) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call i64 @ft_strlen(ptr noundef %8)
  %10 = add i64 %9, 1
  store i64 %10, ptr %6, align 8, !tbaa !11
  br label %11

11:                                               ; preds = %27, %2
  %12 = load i64, ptr %6, align 8, !tbaa !11
  %13 = add i64 %12, -1
  store i64 %13, ptr %6, align 8, !tbaa !11
  %14 = icmp ne i64 %12, 0
  br i1 %14, label %15, label %28

15:                                               ; preds = %11
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i64, ptr %6, align 8, !tbaa !11
  %18 = getelementptr inbounds i8, ptr %16, i64 %17
  %19 = load i8, ptr %18, align 1, !tbaa !13
  %20 = sext i8 %19 to i32
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = icmp eq i32 %20, %21
  br i1 %22, label %23, label %27

23:                                               ; preds = %15
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = load i64, ptr %6, align 8, !tbaa !11
  %26 = getelementptr inbounds i8, ptr %24, i64 %25
  store ptr %26, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %29

27:                                               ; preds = %15
  br label %11, !llvm.loop !14

28:                                               ; preds = %11
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %30 = load ptr, ptr %3, align 8
  ret ptr %30
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i64 @ft_strlen(ptr noundef) #2

; 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 = { "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 #3 = { 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: nounwind uwtable
define dso_local ptr @ft_strrchr(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call i64 @ft_strlen(ptr noundef %0) #2
  %4 = add i64 %3, 1
  br label %5

5:                                                ; preds = %6, %2
  %.0 = phi i64 [ %4, %2 ], [ %7, %6 ]
  %.not = icmp eq i64 %.0, 0
  br i1 %.not, label %.split.loop.exit, label %6

6:                                                ; preds = %5
  %7 = add i64 %.0, -1
  %8 = getelementptr inbounds i8, ptr %0, i64 %7
  %9 = load i8, ptr %8, align 1, !tbaa !5
  %10 = sext i8 %9 to i32
  %11 = icmp eq i32 %10, %1
  br i1 %11, label %.split.loop.exit.split.loop.exit10, label %5, !llvm.loop !8

.split.loop.exit.split.loop.exit10:               ; preds = %6
  %12 = getelementptr inbounds i8, ptr %0, i64 %7
  br label %.split.loop.exit

.split.loop.exit:                                 ; preds = %5, %.split.loop.exit.split.loop.exit10
  %.07 = phi ptr [ %12, %.split.loop.exit.split.loop.exit10 ], [ null, %5 ]
  ret ptr %.07
}

declare i64 @ft_strlen(ptr noundef) local_unnamed_addr #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 = { "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 #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 = !{!"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,SROAPass,SimplifyCFGPass,TailCallElimPass