; LLVM IR from LlimaV10/doom-nukem_v2 :: libft (ft_strnew)

; 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_strnew(i64 noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store i64 %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %7 = load i64, ptr %3, align 8, !tbaa !5
  %8 = trunc i64 %7 to i32
  %9 = add nsw i32 %8, 1
  %10 = sext i32 %9 to i64
  %11 = mul i64 %10, 1
  %12 = call noalias ptr @malloc(i64 noundef %11) #4
  store ptr %12, ptr %4, align 8, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !9
  %14 = icmp eq ptr %13, null
  br i1 %14, label %15, label %16

15:                                               ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %28

16:                                               ; preds = %1
  %17 = load ptr, ptr %4, align 8, !tbaa !9
  store ptr %17, ptr %5, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %22, %16
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = add i64 %19, -1
  store i64 %20, ptr %3, align 8, !tbaa !5
  %21 = icmp ugt i64 %19, 0
  br i1 %21, label %22, label %25

22:                                               ; preds = %18
  %23 = load ptr, ptr %4, align 8, !tbaa !9
  %24 = getelementptr inbounds i8, ptr %23, i32 1
  store ptr %24, ptr %4, align 8, !tbaa !9
  store i8 0, ptr %23, align 1, !tbaa !11
  br label %18, !llvm.loop !12

25:                                               ; preds = %18
  %26 = load ptr, ptr %4, align 8, !tbaa !9
  store i8 0, ptr %26, align 1, !tbaa !11
  %27 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %27, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %28

28:                                               ; preds = %25, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %29 = load ptr, ptr %2, align 8
  ret ptr %29
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 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 = { nounwind allocsize(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 #3 = { nounwind }
attributes #4 = { nounwind allocsize(0) }

!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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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: mustprogress nofree nounwind willreturn memory(write, inaccessiblemem: readwrite) uwtable
define dso_local noalias noundef ptr @ft_strnew(i64 noundef %0) local_unnamed_addr #0 {
  %2 = shl i64 %0, 32
  %sext = add i64 %2, 4294967296
  %3 = ashr exact i64 %sext, 32
  %4 = tail call noalias ptr @malloc(i64 noundef %3) #3
  %5 = icmp eq ptr %4, null
  br i1 %5, label %6, label %.preheader

.preheader:                                       ; preds = %1
  %.not10 = icmp eq i64 %0, 0
  br i1 %.not10, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %.preheader
  tail call void @llvm.memset.p0.i64(ptr nonnull align 1 %4, i8 0, i64 %0, i1 false), !tbaa !5
  %scevgep = getelementptr i8, ptr %4, i64 %0
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.preheader, %.preheader
  %.07.lcssa = phi ptr [ %4, %.preheader ], [ %scevgep, %.lr.ph.preheader ]
  store i8 0, ptr %.07.lcssa, align 1, !tbaa !5
  br label %6

6:                                                ; preds = %1, %._crit_edge
  ret ptr %4
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { mustprogress nofree nounwind willreturn memory(write, inaccessiblemem: readwrite) 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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nounwind allocsize(0) }

!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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass