; LLVM IR from holzschu/ios_system :: libinfo/gen.subproj (rthdr)

; 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 i64 @inet6_rthdr_space(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %6 = load i32, ptr %4, align 4, !tbaa !5
  switch i32 %6, label %23 [
    i32 0, label %7
  ]

7:                                                ; preds = %2
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = icmp slt i32 %8, 1
  br i1 %9, label %13, label %10

10:                                               ; preds = %7
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, 23
  br i1 %12, label %13, label %14

13:                                               ; preds = %10, %7
  store i64 0, ptr %3, align 8
  br label %24

14:                                               ; preds = %10
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = mul i64 16, %16
  %18 = add i64 %17, 8
  %19 = add i64 %18, 8
  %20 = sub i64 %19, 1
  %21 = and i64 %20, -8
  %22 = add i64 %21, 16
  store i64 %22, ptr %3, align 8
  br label %24

23:                                               ; preds = %2
  store i64 0, ptr %3, align 8
  br label %24

24:                                               ; preds = %23, %14, %13
  %25 = load i64, ptr %3, align 8
  ret i64 %25
}

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" }

!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"}


; 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(none) uwtable
define dso_local range(i64 0, 400) i64 @inet6_rthdr_space(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %cond = icmp ne i32 %0, 0
  %3 = add i32 %1, -24
  %or.cond = icmp ult i32 %3, -23
  %or.cond7 = or i1 %cond, %or.cond
  %4 = shl nuw nsw i32 %1, 4
  %narrow = add nuw nsw i32 %4, 24
  %5 = zext nneg i32 %narrow to i64
  %.0 = select i1 %or.cond7, i64 0, i64 %5
  ret i64 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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)"}


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