; LLVM IR from nde-jesu/Doom_Nukem :: libft/srcs/control (ft_charcount)

; 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 i32 @ft_charcount(ptr noundef %0, i8 noundef signext %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i8 %1, ptr %4, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !10
  br label %6

6:                                                ; preds = %27, %2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %14

9:                                                ; preds = %6
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load i8, ptr %10, align 1, !tbaa !9
  %12 = sext i8 %11 to i32
  %13 = icmp ne i32 %12, 0
  br label %14

14:                                               ; preds = %9, %6
  %15 = phi i1 [ false, %6 ], [ %13, %9 ]
  br i1 %15, label %16, label %28

16:                                               ; preds = %14
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i32 1
  store ptr %18, ptr %3, align 8, !tbaa !5
  %19 = load i8, ptr %17, align 1, !tbaa !9
  %20 = sext i8 %19 to i32
  %21 = load i8, ptr %4, align 1, !tbaa !9
  %22 = sext i8 %21 to i32
  %23 = icmp eq i32 %20, %22
  br i1 %23, label %24, label %27

24:                                               ; preds = %16
  %25 = load i32, ptr %5, align 4, !tbaa !10
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %5, align 4, !tbaa !10
  br label %27

27:                                               ; preds = %24, %16
  br label %6, !llvm.loop !12

28:                                               ; preds = %14
  %29 = load i32, ptr %5, align 4, !tbaa !10
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %29
}

; 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 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !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 i32 @ft_charcount(ptr noundef readonly %0, i8 noundef signext %1) local_unnamed_addr #0 {
  %.not8 = icmp eq ptr %0, null
  br i1 %.not8, label %.critedge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %3 = load i8, ptr %0, align 1, !tbaa !5
  %.not713 = icmp eq i8 %3, 0
  br i1 %.not713, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %4 = phi i8 [ %8, %.lr.ph ], [ %3, %.lr.ph.preheader ]
  %.05915 = phi ptr [ %5, %.lr.ph ], [ %0, %.lr.ph.preheader ]
  %.01014 = phi i32 [ %spec.select, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %5 = getelementptr inbounds i8, ptr %.05915, i64 1
  %6 = icmp eq i8 %4, %1
  %7 = zext i1 %6 to i32
  %spec.select = add nuw nsw i32 %.01014, %7
  %8 = load i8, ptr %5, align 1, !tbaa !5
  %.not7 = icmp eq i8 %8, 0
  br i1 %.not7, label %.critedge, label %.lr.ph

.critedge:                                        ; preds = %.lr.ph, %.lr.ph.preheader, %2
  %.0.lcssa = phi i32 [ 0, %2 ], [ 0, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  ret i32 %.0.lcssa
}

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"}


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