; LLVM IR from 0intro/wmii :: lib/libfmt/fmtlocale.ll_ (needsep)

; 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 @__needsep(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = load i32, ptr %8, align 4, !tbaa !9
  %10 = add nsw i32 %9, 1
  store i32 %10, ptr %8, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = load i8, ptr %12, align 1, !tbaa !11
  %14 = zext i8 %13 to i32
  store i32 %14, ptr %6, align 4, !tbaa !9
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = icmp eq i32 %15, 255
  br i1 %16, label %23, label %17

17:                                               ; preds = %2
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = icmp eq i32 %18, 127
  br i1 %19, label %23, label %20

20:                                               ; preds = %17
  %21 = load i32, ptr %6, align 4, !tbaa !9
  %22 = icmp eq i32 %21, 0
  br i1 %22, label %23, label %24

23:                                               ; preds = %20, %17, %2
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %43

24:                                               ; preds = %20
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i32, ptr %25, align 4, !tbaa !9
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = icmp sgt i32 %26, %27
  br i1 %28, label %29, label %42

29:                                               ; preds = %24
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i64 1
  %33 = load i8, ptr %32, align 1, !tbaa !11
  %34 = sext i8 %33 to i32
  %35 = icmp ne i32 %34, 0
  br i1 %35, label %36, label %40

36:                                               ; preds = %29
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load ptr, ptr %37, align 8, !tbaa !5
  %39 = getelementptr inbounds i8, ptr %38, i32 1
  store ptr %39, ptr %37, align 8, !tbaa !5
  br label %40

40:                                               ; preds = %36, %29
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  store i32 1, ptr %41, align 4, !tbaa !9
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %43

42:                                               ; preds = %24
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %43

43:                                               ; preds = %42, %40, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %44 = load i32, ptr %3, align 4
  ret i32 %44
}

; 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}


; 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 norecurse nosync nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @__needsep(ptr nocapture noundef %0, ptr nocapture noundef %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %0, align 4, !tbaa !5
  %4 = add nsw i32 %3, 1
  store i32 %4, ptr %0, align 4, !tbaa !5
  %5 = load ptr, ptr %1, align 8, !tbaa !9
  %6 = load i8, ptr %5, align 1, !tbaa !11
  switch i8 %6, label %7 [
    i8 -1, label %14
    i8 127, label %14
    i8 0, label %14
  ]

7:                                                ; preds = %2
  %8 = zext i8 %6 to i32
  %.not = icmp slt i32 %3, %8
  br i1 %.not, label %14, label %9

9:                                                ; preds = %7
  %10 = getelementptr inbounds i8, ptr %5, i64 1
  %11 = load i8, ptr %10, align 1, !tbaa !11
  %.not14 = icmp eq i8 %11, 0
  br i1 %.not14, label %13, label %12

12:                                               ; preds = %9
  store ptr %10, ptr %1, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %12, %9
  store i32 1, ptr %0, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %7, %2, %2, %2, %13
  %.0 = phi i32 [ 1, %13 ], [ 0, %2 ], [ 0, %2 ], [ 0, %2 ], [ 0, %7 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: readwrite, 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 = !{!"int", !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}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass