; LLVM IR from bnidia/push_swap :: libraries/libft (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)
  store i64 %9, ptr %6, align 8, !tbaa !11
  br label %10

10:                                               ; preds = %25, %2
  %11 = load i64, ptr %6, align 8, !tbaa !11
  %12 = icmp ne i64 %11, 0
  br i1 %12, label %13, label %23

13:                                               ; preds = %10
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i64, ptr %6, align 8, !tbaa !11
  %16 = getelementptr inbounds i8, ptr %14, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !13
  %18 = sext i8 %17 to i32
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = trunc i32 %19 to i8
  %21 = sext i8 %20 to i32
  %22 = icmp ne i32 %18, %21
  br label %23

23:                                               ; preds = %13, %10
  %24 = phi i1 [ false, %10 ], [ %22, %13 ]
  br i1 %24, label %25, label %28

25:                                               ; preds = %23
  %26 = load i64, ptr %6, align 8, !tbaa !11
  %27 = add i64 %26, -1
  store i64 %27, ptr %6, align 8, !tbaa !11
  br label %10, !llvm.loop !14

28:                                               ; preds = %23
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load i64, ptr %6, align 8, !tbaa !11
  %31 = getelementptr inbounds i8, ptr %29, i64 %30
  %32 = load i8, ptr %31, align 1, !tbaa !13
  %33 = sext i8 %32 to i32
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = trunc i32 %34 to i8
  %36 = sext i8 %35 to i32
  %37 = icmp eq i32 %33, %36
  br i1 %37, label %38, label %42

38:                                               ; preds = %28
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = load i64, ptr %6, align 8, !tbaa !11
  %41 = getelementptr inbounds i8, ptr %39, i64 %40
  store ptr %41, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %43

42:                                               ; preds = %28
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %43

43:                                               ; preds = %42, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %44 = load ptr, ptr %3, align 8
  ret ptr %44
}

; 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
  %.not14 = icmp eq i64 %3, 0
  %.pre = shl i32 %1, 24
  %.pre18 = ashr exact i32 %.pre, 24
  br i1 %.not14, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %7
  %.015 = phi i64 [ %8, %7 ], [ %3, %2 ]
  %4 = getelementptr inbounds i8, ptr %0, i64 %.015
  %5 = load i8, ptr %4, align 1, !tbaa !5
  %6 = sext i8 %5 to i32
  %.not12 = icmp eq i32 %.pre18, %6
  br i1 %.not12, label %.critedge, label %7

7:                                                ; preds = %.lr.ph
  %8 = add i64 %.015, -1
  %.not = icmp eq i64 %8, 0
  br i1 %.not, label %.critedge, label %.lr.ph, !llvm.loop !8

.critedge:                                        ; preds = %.lr.ph, %7, %2
  %.0.lcssa = phi i64 [ 0, %2 ], [ 0, %7 ], [ %.015, %.lr.ph ]
  %9 = getelementptr inbounds i8, ptr %0, i64 %.0.lcssa
  %10 = load i8, ptr %9, align 1, !tbaa !5
  %11 = sext i8 %10 to i32
  %12 = icmp eq i32 %.pre18, %11
  %. = select i1 %12, ptr %9, ptr null
  ret ptr %.
}

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: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass